WO2020111249A1 - 末梢血流障害の治療剤 - Google Patents
末梢血流障害の治療剤 Download PDFInfo
- Publication number
- WO2020111249A1 WO2020111249A1 PCT/JP2019/046847 JP2019046847W WO2020111249A1 WO 2020111249 A1 WO2020111249 A1 WO 2020111249A1 JP 2019046847 W JP2019046847 W JP 2019046847W WO 2020111249 A1 WO2020111249 A1 WO 2020111249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cells
- cell preparation
- muse
- cell
- blood flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/48—Reproductive organs
- A61K35/54—Ovaries; Ova; Ovules; Embryos; Foetal cells; Germ cells
- A61K35/545—Embryonic stem cells; Pluripotent stem cells; Induced pluripotent stem cells; Uncharacterised stem cells
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/08—Vasodilators for multiple indications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
Definitions
- the present invention relates to a cell preparation for regenerative medicine. More specifically, it relates to a cell preparation containing pluripotent stem cells effective for revascularization therapy of peripheral blood flow disorders such as peripheral arterial disease.
- PAD mainly refers to chronic arterial occlusion of the extremities, including arteriosclerosis obliterans (ASO), thromboangiitis obliterans (TAO), and popliteal artery capture syndrome. Etc. are included. PAD appears as a symptom of the foot called ischemic limb. However, it is not just a foot disease, but it appears as an ischemic limb due to obstruction of peripheral blood vessels due to arteriosclerosis against the background of aging and diabetes. Therefore, PAD often accompanies the same arteriosclerotic disease, ischemic heart disease and brain disease. The prognosis is very poor and the mortality rate is said to be higher than that of malignant tumors. It is important to provide appropriate treatment by early detection.
- the current treatment plan for PAD is to deal with circulatory disorders in the lower limbs, to the major organs of the whole body (brain, heart, kidney), risk factors for arteriosclerosis (smoking, diabetes, hyperlipidemia, hypertension, obesity, Insufficient exercise, stress, etc.), and the treatment methods are broadly classified into medical treatment and surgical treatment.
- Medical treatment of PAD includes physical therapy such as exercise therapy and hyperthermia, cilostazol, sodium peraprost, sarpogrelate hydrochloride, ticlopidine hydrochloride, ethyl icosapentate, alprostadil, alprostadil alfadex, argatroban, patroxobin, pen.
- Drug therapy including antiplatelet drugs such as toxifylline, antithrombotic drugs, and vasodilators is performed.
- antiplatelet drugs such as toxifylline, antithrombotic drugs, and vasodilators
- vasodilators As surgical treatment for PAD, endovascular treatment such as balloon dilatation, stent placement, and atherectomy, and surgical operations such as thrombectomy, bypass, and sympathectomy are performed.
- PAD arteriosclerosis obliterans
- ASO arteriosclerosis obliterans
- TAO thromboangiitis obliterans
- Burger disease popliteal artery capture syndrome
- Non-patent document 1 the treatment by bone marrow mononuclear cell transplantation requires a large amount of bone marrow fluid collection, is highly invasive, and the amount of stem cells and progenitor cells in the bone marrow cells is different due to freshly isolated cells, so there is a large difference in clinical effect. It is clear that it will come out.
- Non-patent document 2 non-patent document 3
- the long-term engraftment of transplanted cells in blood vessels and the differentiation into vascular constituent cells are not observed, and the effect of regenerative medicine cannot be said to be sufficient.
- Patent No. 5185443 International Publication No. WO2011/007900 Pamphlet
- the present invention aims to provide a cell preparation for the treatment of peripheral blood flow disorders including peripheral arterial disease.
- the inventors of the present invention administered human Muse cells from a blood vessel or the like or directly administered to a peripheral arterial site of a target and its surroundings to accumulate Muse cells in a damaged peripheral arterial site. It was found that the blood vessels in the peripheral artery site engrafted by engraftment are regenerated, and the improvement or recovery of the vascular disorder in the peripheral arterial site is brought about. They have found that they can be suitably used for treatment, and have completed the present invention.
- a cell preparation for treating peripheral blood flow disorders comprising SSEA-3-positive pluripotent stem cells derived from living mesenchymal tissues or cultured mesenchymal cells.
- the cell preparation according to [1], wherein the peripheral blood flow disorder is peripheral arterial disease.
- the cell preparation according to [2], wherein the peripheral artery disease is chronic arterial occlusion of the extremities.
- the cell preparation according to [2] or [3], wherein the peripheral arterial disease is arteriosclerosis obliterans.
- the pluripotent stem cells are pluripotent stem cells having all of the following properties: (I) low or no telomerase activity; (Ii) having the ability to differentiate into cells of any of the three germ layers; (Iii) show no neoplastic growth; and (iv) have self-renewal ability.
- pluripotent stem cells are pluripotent stem cells having all of the following properties: (I) SSEA-3 positive; (Ii) CD105 positive; (Iii) low or no telomerase activity; (Iv) having the ability to differentiate into any of the three germ layers; (V) show no neoplastic growth; and (vi) have self-renewal ability.
- SSEA-3-positive pluripotent stem cells derived from living mesenchymal tissue or cultured mesenchymal cells for producing a cell preparation for treating peripheral blood flow disorders.
- a method for treating peripheral blood flow disorders which comprises the step of administering an effective amount of the cell preparation according to any one of [1] to [7] above to a patient in need of treatment.
- Muse cells are damaged by administering Muse cells from a blood vessel or the like to a subject suffering from a peripheral blood flow disorder such as peripheral arterial disease or directly administering to the peripheral blood vessel site of the subject or its periphery. It is possible to regenerate a blood vessel in a peripheral blood vessel site that has accumulated and engrafted in the peripheral blood vessel site and has been damaged to improve or recover the blood flow disorder in the peripheral blood vessel site.
- a peripheral blood flow disorder such as peripheral arterial disease or directly administering to the peripheral blood vessel site of the subject or its periphery.
- Muse cells can efficiently migrate to and engraft a damaged peripheral blood vessel site, form blood vessels at the engrafted site, and do not require differentiation induction into cells to be treated prior to transplantation. .. It is also non-tumorigenic and has excellent safety. Furthermore, since Muse cells do not undergo immune rejection, they can be treated with allogeneic products manufactured from donors. Therefore, Muse cells having the above-mentioned excellent performance can provide a means that can be easily implemented for the treatment of patients suffering from peripheral blood flow disorders such as peripheral arterial disease. In the case of mesenchymal stem cells and autologous bone marrow cells, it is difficult for cells to reach the lesion site by intravenous administration, or even if they reach the lesion site, their efficiency is very low.
- Injection has a problem that continuous treatment is difficult.
- Muse cells and the like can selectively reach and accumulate at the lesion site only by intravenous administration, and can be administered multiple times because of intravenous administration.
- FIG. 1 is a graph showing the results of blood flow laser Doppler measurement when each cell was administered to a lower limb ischemia model mouse (nude mouse).
- the vertical axis represents the blood flow ratio of the ischemic limb/non-ischemic limb.
- Ve Vehicle BM: bone marrow n Muse: non Muse cell Muse: Muse cell are shown.
- FIG. 2 is a graph showing the results of measuring the expression level of angiogenesis-related genes, which are angiogenic factors, 6 days after the administration of each cell.
- FIG. 3 is a photograph showing the results of measuring the blood vessel density in ischemic skeletal muscle on day 28 after the administration of each cell. Left shows Muse cell administration and right shows Vehicle.
- FIG. 1 is a graph showing the results of blood flow laser Doppler measurement when each cell was administered to a lower limb ischemia model mouse (nude mouse).
- the vertical axis represents the blood flow ratio of the ischemic limb/non-ischemic limb
- FIG. 4 shows the results of laser Doppler analysis of blood flow in the ischemic hindlimb of BALBc mice in which Muse cells, non-Muse cells, BMMNC (bone marrow mononuclear cells) or PBS were injected into muscle or vein.
- A shows the change in blood flow ratio between ischemic limb/non-ischemic limb over time (**P ⁇ 0.01 PBS vs. Muse iv, ##P ⁇ 0.01 non Muse iv v. Muse iv), and B indicates postoperative 7 Day and C indicate blood flow ratio 14 days after surgery (** significant difference between groups (P0.01)).
- FIG. 5 is a diagram (micrograph) showing the results of staining tissue sections of ischemic adductor muscle 14 days after administration of PBS or Muse cells with anti-CD31 antibody and DAPI. Scale bar 50 ⁇ m.
- the present invention relates to a cell preparation containing SSEA-3-positive pluripotent stem cells (Muse cells) for treating peripheral blood flow disorders.
- SSEA-3-positive pluripotent stem cells Muse cells
- the present invention is described in detail below.
- the cell preparation containing SSEA-3-positive pluripotent stem cells (Muse cells) of the present invention is used for the treatment of peripheral arterial disease.
- peripheral blood flow disorder means a disorder caused by a decrease in peripheral blood flow due to a peripheral blood vessel disorder, sympathetic nerve disorder, or the like.
- Peripheral blood vessel disorders include peripheral arterial disease (PAD) and peripheral vein disease.
- Peripheral artery disease includes organic peripheral arterial disease and functional peripheral arterial disease.
- Organic peripheral arterial disease includes arteriosclerosis obliterans (ASO) and thromboangiitis obliterans (TAO). : thromboangiitis obliterans, so-called Burger's disease), acute arterial occlusion (including acute arterial embolism, acute arterial thrombosis), aortitis syndrome, Behcet's disease, popliteal artery capture syndrome, popliteal artery adventitial cyst, residual ischial bone Examples thereof include arteries, and examples of functional peripheral arterial disease include Raynaud's disease.
- the “peripheral artery disease” is preferably a disease corresponding to chronic arterial occlusion of limbs, and of the above diseases, arteriosclerosis obliterans, thromboangiitis obliterans and popliteal artery capture syndrome are preferred.
- Raynaud's disease includes primary Raynaud's syndrome and secondary Raynaud's syndrome, the cause of which is not particularly limited, and is caused by collagen disease, trauma, vibration, chest outlet syndrome, chronic obstructive arterial disease. And the like, due to blood diseases, due to nerve diseases, and the like.
- Peripheral vein disease includes venous thrombosis (deep vein thrombosis, etc.), chronic venous insufficiency, varicose veins of the lower extremities, varicose eczema, and varicose ulcers.
- Sympathetic disorders include abnormal sympathetic reflexes, including sympathetic disorders that can cause peripheral blood flow disorders such as reflex sympathetic atrophy, causalgia, phantom limb pain, and central pain.
- Pluripotent stem cells The pluripotent stem cells used in the cell preparation of the present invention are cells named by "Muse (Multilineage-differentiating Stress Enduring) cells" by Desawa, one of the present inventors, who found their existence in the human body. Is. Muse cells can be obtained from bone marrow fluid, adipose tissue (Ogura, F., et al., Stem Cells Dev., Nov 20, 2013 (Epub) (published on Jan 17, 2014)) or dermal connective tissue of skin. Besides, it is widely known to exist in connective tissues of tissues and organs.
- this cell is a cell having the properties of both pluripotent stem cells and mesenchymal stem cells, and for example, it is a cell surface marker "SSEA-3 (Stage-specific embryonic antigen-3)" positive cell, preferably Are identified as SSEA-3 positive and CD105 positive double positive cells. Therefore, Muse cells or a cell population containing Muse cells can be separated from living tissues using, for example, SSEA-3 alone or the expression of SSEA-3 and CD105 as an index. Details such as a method for separating Muse cells, an identification method, and characteristics are disclosed in Patent Document 2 (International Publication No. WO2011/007900).
- Muse cells are highly resistant to various external stresses, and are used for proteolytic enzyme treatment, hypoxic conditions, low phosphate conditions, low serum concentrations, low nutrient conditions, exposure to heat shock, and harmful effects. Muse cells can be selectively concentrated by culturing under various external stress conditions such as the presence of a substance, the presence of active oxygen, mechanical stimulation, and pressure treatment.
- pluripotent stem cells prepared from living mesenchymal tissues or cultured mesenchymal tissues using SSEA-3 as an index as a cell preparation for treating peripheral arterial disease ( Muse cells) or a cell population containing Muse cells may be simply referred to as “SSEA-3 positive cells”.
- non-Muse cell may be a cell contained in a living mesenchymal tissue or a cultured mesenchymal cell, and refers to a cell other than the “SSEA-3-positive cell”. is there.
- Muse cells or a cell population containing Muse cells can be prepared from living tissues (for example, mesenchymal tissues) using SSEA-3 or SSEA-3 and CD105, which are cell surface markers, as an index.
- the "living body” refers to a living body of a mammal. In the present invention, the living body does not include a fertilized egg or an embryo whose developmental stage is earlier than the blastula stage, but includes embryos in the developmental stage after the blastula stage, including a fetus or a blastula.
- Mammals include, but are not limited to, humans, primates such as monkeys, mice, rats, rodents such as guinea pigs, rabbits, cats, dogs, sheep, pigs, cows, horses, donkeys, goats, ferrets and the like. Be done. Muse cells used in the cell preparation of the present invention are clearly distinguished from embryonic stem cells (ES cells) and iPS cells in that they are directly separated from tissues of a living body with a marker.
- ES cells embryonic stem cells
- iPS cells embryonic stem cells
- meenchymal tissue refers to tissues such as bone, synovium, fat, blood, bone marrow, skeletal muscle, dermis, ligament, tendon, dental pulp, umbilical cord, cord blood, and amnion, and tissues present in various organs.
- Muse cells can be obtained from bone marrow, skin, adipose tissue, blood, dental pulp, umbilical cord, cord blood, amniotic membrane and the like. For example, it is preferable to collect mesenchymal tissue from a living body, prepare Muse cells from this tissue, and use it. In addition, Muse cells may be prepared from cultured mesenchymal cells such as fibroblasts and bone marrow mesenchymal stem cells using the above-mentioned preparation means.
- the cell population containing Muse cells used in the cell preparation of the present invention gives external stress stimulation to living mesenchymal tissues or cultured mesenchymal cells to give cells resistant to the external stress. It can also be prepared by a method that includes collecting cells that have been selectively expanded to increase their abundance.
- the external stress includes protease treatment, culture under low oxygen concentration, culture under low phosphate conditions, culture under low serum concentration, culture under low nutrient conditions, culture under exposure to heat shock, low temperature. Culture, freeze treatment, culture in the presence of harmful substances, culture in the presence of active oxygen, culture under mechanical stimulation, culture under shaking treatment, culture under pressure treatment or physical shock Any or a combination of a plurality of them may be used.
- the treatment time with the protease is preferably 0.5 to 36 hours in total in order to apply external stress to the cells.
- the protease concentration may be a concentration used when peeling cells adhered to the culture vessel, breaking the cell mass into single cells, or collecting single cells from the tissue.
- the protease is preferably serine protease, aspartic protease, cysteine protease, metalloprotease, glutamate protease or N-terminal threonine protease. Furthermore, it is preferable that the protease is trypsin, collagenase or dispase.
- the Muse cells used may be autologous or foreign to the recipient of the cell transplant.
- Muse cells or a cell population containing Muse cells can be prepared from living tissue using, for example, SSEA-3 positivity or double positivity of SSEA-3 and CD105 as an index.
- stem cells and progenitor cells include skin-derived progenitor cells (SKP), neural crest stem cells (NCSC), melanoblasts (MB), perivascular cells (PC), endothelial progenitor cells (EP), adipose-derived stem cells (ADSC).
- SSEA-3 positivity or double positivity of SSEA-3 and CD105 are known to contain various types of stem cells and progenitor cells. However, Muse cells are not the same as these cells.
- Such stem cells and progenitor cells include skin-derived progenitor cells (SKP), neural crest stem cells (NCSC), melanoblasts (MB), perivascular cells (PC), endothelial progenitor cells (EP), adipose-derived stem cells (ADSC). ) Is mentioned.
- Muse cells can be prepared
- Muse cells have CD34 (marker for EP and ADSC), CD117 (c-kit) (marker for MB), CD146 (marker for PC and ADSC), CD271 (NGFR) (marker for NCSC), NG2 (PC marker), vWF factor (von Willebrand factor) (EP marker), Sox10 (NCSC marker), Snai1 (SKP marker), Slug (SKP marker), Tyrp1 (MB marker), and At least one of the 11 markers selected from the group consisting of Dct (MB marker), for example, 2, 3, 4, 5, 6, 7, 8, 9, 10 The non-expression of 1 or 11 markers can be separated as an index.
- it can be prepared by using non-expression of CD117 and CD146 as an index, and can be prepared by using non-expression of CD117, CD146, NG2, CD34, vWF and CD271 as an index. It can be prepared by using non-expression of 11 markers as an index.
- Muse cells having the above characteristics used in the cell preparation of the present invention are as follows: (I) low or no telomerase activity; (Ii) having the ability to differentiate into cells of any of the three germ layers; It may have at least one property selected from the group consisting of (iii) not showing neoplastic growth; and (iv) having self-renewal ability.
- the Muse cells used in the cell preparation of the present invention have all of the above properties.
- the telomerase activity is low or absent means, for example, that the telomerase activity is low or undetectable when the telomerase activity is detected using TRAPEZE XL telomerase detection kit (Millipore).
- Low telomerase activity means, for example, that the telomerase has the same telomerase activity as human fibroblasts which are somatic cells, or 1/5 or less, preferably 1/10 or less as compared with Hela cells. It has activity.
- Muse cells have the ability to differentiate into three germ layers (endoderm lineage, mesoderm lineage, and ectoderm lineage) in vitro and in vivo, for example, inducing culture in vitro.
- it can be differentiated into hepatocytes (including hepatoblasts or cells expressing a hepatocyte marker), nerve cells, skeletal muscle cells, smooth muscle cells, osteocytes, adipocytes and the like.
- the ability to differentiate into three germ layers may also be exhibited when transplanted into the testis in vivo.
- it has the ability to migrate and engraft in injured organs (heart, skin, spinal cord, liver, muscle, etc.) when transplanted to a living body by intravenous injection, and differentiate into cells according to the tissue.
- Muse cells proliferate at a proliferation rate of about 1.3 days, but in suspension culture they proliferate from one cell to form embryoid body-like cell clusters and grow in a certain size for about 14 days.
- cell proliferation is restarted and the cells grown from the cell clusters spread at a proliferation rate of about 1.3 days. ..
- transplanted to the testis it has the property of not becoming cancerous for at least half a year.
- Muse cells have self-renewal (self-renewal) ability.
- self-renewal means that differentiation of cells contained in an embryoid body-like cell mass obtained by culturing from one Muse cell in suspension culture into cells of three germ layers can be confirmed at the same time, By bringing the cells of the embryoid body-like cell cluster into suspension culture with one cell again, the embryoid body-like cell cluster of the next generation is formed, from which again embryos in three germ layer differentiation and suspension culture It means that a body-like cell mass can be confirmed.
- the self-renewal may repeat one or more cycles.
- the cell preparation of the present invention is not limited, but the Muse cells or the cell population containing Muse cells obtained in (1) above may be mixed with physiological saline or an appropriate buffer solution (for example, phosphorus). Acid-buffered saline).
- physiological saline or an appropriate buffer solution for example, phosphorus. Acid-buffered saline.
- the cells may be cultured before cell transplantation and grown until a predetermined cell number is obtained.
- Muse cells do not turn into tumors, and therefore there is a concern that they may become cancerous even if cells recovered from living tissues are contained in an undifferentiated state. Low and safe.
- culture of the recovered Muse cells is not particularly limited, but can be performed in a normal growth medium (eg, ⁇ -minimum essential medium ( ⁇ -MEM) containing 10% fetal calf serum). More specifically, referring to the pamphlet of International Publication No. WO2011/007900, in culturing and expanding Muse cells, a medium, additives (eg, antibiotics, serum) and the like are appropriately selected, and Muse cells having a predetermined concentration are selected. A solution containing can be prepared.
- a normal growth medium eg, ⁇ -minimum essential medium ( ⁇ -MEM) containing 10% fetal calf serum.
- bone marrow fluid is collected from human iliac bone and, for example, bone marrow mesenchymal stem cells are cultured as adherent cells from the bone marrow fluid to produce an effective therapeutic amount of Muse.
- Muse cells can be separated using the SSEA-3 antigen marker as an index, and autologous or allogenic Muse cells can be prepared as a cell preparation.
- bone marrow mesenchymal stem cells obtained from bone marrow fluid are cultured under external stress conditions to grow and concentrate Muse cells until an effective therapeutic amount is reached, and then autologous or allogeneic Muse cells are used as cells. It can be prepared as a formulation.
- Muse cells in a cell preparation, dimethyl sulfoxide (DMSO), serum albumin, etc. are contained in the cell preparation in order to protect the cells, and an antibiotic or the like is contained in the cell preparation in order to prevent bacterial contamination and growth. May be.
- DMSO dimethyl sulfoxide
- serum albumin etc.
- an antibiotic or the like is contained in the cell preparation in order to prevent bacterial contamination and growth. May be.
- other pharmaceutically acceptable ingredients eg, carrier, excipient, disintegrant, buffer, emulsifier, suspension, soothing agent, stabilizer, preservative, preservative, physiological saline, etc.
- Muse cells can also be used as a pharmaceutical composition containing various additives.
- the number of Muse cells contained in the above-prepared cell preparation depends on the sex of the subject, age, weight, condition of affected area, condition of cells to be used, etc. so that desired effects can be obtained in the treatment of peripheral blood flow disorder. It can be adjusted as appropriate in consideration of the above.
- the target individual includes mammals such as humans, but is not limited thereto.
- the cell preparation of the present invention may be administered a plurality of times (eg, 2 to 10 times) at appropriate intervals (eg, twice a day, once a day, once a week until the desired therapeutic effect is obtained. Twice, once a week, once every two weeks, once a month, once every two months, once every three months, once every six months).
- a therapeutically effective dose is, for example, preferably 1 ⁇ 10 3 cells to 1 ⁇ 10 10 cells per individual, and a dose of 1 to 10 times.
- the total dose for one individual is not limited, but is 1 ⁇ 10 3 cells to 1 ⁇ 10 11 cells, preferably 1 ⁇ 10 4 cells to 1 ⁇ 10 10 cells, and more preferably 1 ⁇ 10 5 cells to 1 ⁇ 10. 9 cells and the like.
- the Muse cells used in the cell preparation of the present invention have the property of migrating to the damaged peripheral blood vessel site and engrafting. Therefore, the administration site and administration form of the cell preparation are not particularly limited, and may be locally administered to the peripheral blood flow disorder site or its vicinity by a method such as injection, or may be administered intravascularly by a method such as injection. Good.
- the type of blood vessel to be administered (vein and artery) is not particularly limited and may be appropriately selected depending on the disease, but intravenous injection is preferable, and multiple intravenous injections can maintain the therapeutic effect for a long period of time. Therefore, it is more preferable.
- the cell preparation of the present invention is capable of regenerating blood vessels in a damaged peripheral blood vessel site of a patient suffering from peripheral blood flow disorder.
- Example 1 Preparation of lower limb ischemia model mouse
- the experimental protocol using mice in this example complies with "Rules for Kyoto Prefectural Medical University Animal Experiments", and the experimental animals are under the supervision of Kyoto Prefectural Medical University Animal Experiment Center. In accordance with the above regulations. More specifically, it was manufactured by the following procedure. Female BALB/C nude mice aged 8-10 weeks were anesthetized by inhalation of isoflurane (induction: 4%, maintenance: 2%). The lower limb was incised and the left common femoral artery and vein and the peripheral portion of the left superficial femoral artery and vein were ligated with 5-0 silk under a stereoscopic microscope (KONAN OPERATION MICROSCOPE KOM). The mouse thus produced was used as a lower limb ischemia model mouse in the following experiments.
- Muse cells were obtained according to the method described in International Publication No. WO2011/007900 regarding separation and identification of human Muse cells.
- Commercially available mesenchymal stem cells (MSC, Lonza) were used as sources of Muse cells.
- the Muse cells used for transplantation express green fluorescent protein (GFP) in order to confirm that they have engrafted in the damaged peripheral arterial site, and the lentivirus is previously labeled so that the cells are labeled with the green fluorescent protein (GFP).
- GFP green fluorescent protein
- the GFP gene was introduced into Muse cells. Muse cells labeled with GFP were separated by FACS as double positive cells of GFP and SSEA-3. The remaining cells obtained by separating Muse cells from MSCs were used as non-Muse cells.
- GFP-positive MSCs were also isolated by FACS and used as MSCs.
- Example 3 Administration of each cell to lower extremity ischemia model mouse
- the lower extremity ischemia model mouse prepared in Example 1 was divided into 4 groups, and on the first day after the model preparation, Muse cells (3 x 10 4 cells, 100 ⁇ L) (Muse), non-Muse cells (3 ⁇ 10 4 cells, 100 ⁇ L) (nMuse), MSC (2 ⁇ 10 5 cells, 100 ⁇ L) (BM) or Vehicle (phosphate buffer) (Ve) was separately administered to two places on the left thigh. The number of animals in one group was 5.
- Example 4 Continuous lower limb blood flow evaluation by laser Doppler Two-dimensional laser blood flow imager [laser doppler perfusion image (LDPI) analyzer] on days 0, 3, 7, 10 and 14 after the production of lower limb ischemia model mice. Blood flow was measured using (OMEGAZONE OZ-1, OMEGAWAVE, Inc. Tokyo, Japan). The blood flow of the lower limbs of each individual was measured, and the ratio of left side (affected side)/right side (healthy side) was calculated, and this was used as the LDPI index. As shown in FIG. 1, in the Muse cell group, the blood flow continued to be improved after 14 days, and the blood flow in the left ischemic lower leg was improved to the same extent as in the healthy right leg. On the other hand, the non-Muse cell group (nMuse), the MSC group (BM) and the Vehicle group (Ve) showed a certain improvement in blood flow up to 10 days, but no improvement was observed after 14 days.
- nMuse non-Muse cell group
- BM M
- Example 5 Measurement of expression level of angiogenesis-related gene, which is an angiogenesis factor, mRNA of lower limb skeletal muscle on the left side (affected side) on day 6 after cell administration was extracted, and VEGF and a typical angiogenesis-related gene were extracted.
- the expression level of bFGF (particularly FGF-2) was measured by an absolute quantitative method of real-time RT-PCR. The measurement method was performed based on Non-Patent Document 8. The result is shown in FIG. In the Muse cell group, the expression levels of angiogenesis-related genes (mRNA), which are these angiogenic factors, were significantly higher than in the Vehicle group.
- Example 6 Measurement of blood vessel density in ischemic skeletal muscle 28 days after cell administration, the tissue of the lower limb skeletal muscle of the left side (affected side) was fixed with 4% paraformaldehyde (Paraformaldehude: PFA), and paraffin sections were prepared.
- Anti-Isolectin GS-IB4 antibody, Alexa Fluor 568 Conjugate (Thermo Fisher Scientific Co., Ltd., used at 300-fold dilution) was used to perform immunohistochemical staining of vascular endothelial cells in skeletal muscle of ischemic lower limbs, and blood vessels per skeletal muscle fiber The percentage of endothelial cells was measured as the blood vessel density. The result is shown in FIG. It can be seen that in the Muse cell group (FIG. 3 left), the blood vessel density in these ischemic skeletal muscles is higher than in the Vehicle group (FIG. 3 right).
- Example 7 Evaluation in lower limb ischemia model using wild type mouse
- a lower limb ischemia model mouse was prepared using a wild type BALBc mouse (male 12 weeks old).
- the prepared lower limb ischemia model mice were divided into groups, and on the first day after the model preparation, the mice in each group had Muse cells (3 ⁇ 10 4 cells, 200 ⁇ L) (Muse) and non-Muse cells (3 ⁇ 10 4 cells).
- Muse cells 3 ⁇ 10 4 cells, 200 ⁇ L) (Muse) and non-Muse cells (3 ⁇ 10 4 cells).
- 200 ⁇ L) (non Muse) or bone marrow mononuclear cells (2 ⁇ 10 5 cells, 200 ⁇ L) (BMMNC) were injected into the tail vein (iv) or intramuscularly (im).
- PBS was injected into the tail vein.
- the number of animals in one group was 5.
- Blood flow in each group was evaluated by a laser Doppler blood flow analyzer in the same manner as in Example 4 before, immediately after, and on the 1st, 3rd, 7th, and 14th days after the surgery. Blood flow was measured in the blood hindlimb and the non-ischemic hindlimb, and the ratio was calculated. The results are shown in A of FIG. The results on the 7th and 14th days are shown in B and C of FIG.
- mice in the control group or intravenous injection of Muse cells were collected 14 days after the operation, and histological analysis was performed.
- the harvested ischemic adductor muscles were fixed in 4% PFA for 1 hour and incubated in 30% sucrose solution overnight.
- Tissues were then embedded in optimal cutting temperature (OCT) compound (Sakura Finetek), snap frozen in liquid nitrogen and cut on a cryostat.
- OCT optimal cutting temperature
- Tissue sections were incubated overnight with rabbit anti-CD31 (ab182981; Abcam) at a 1:5,000 dilution.
- Goat anti-rabbit Alexa 594 (Abcam) was used as the secondary antibody.
- the cell preparation of the present invention when administered to a patient suffering from a peripheral blood flow disorder such as peripheral arterial disease, accumulates/engrafts on the damaged peripheral blood vessel site, and the blood vessel of the peripheral blood vessel site having the disorder occurs. Can be regenerated to improve or recover the blood flow disorder in the peripheral blood vessel site.
- a peripheral blood flow disorder such as peripheral arterial disease
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Medicinal Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Pharmacology & Pharmacy (AREA)
- Chemical & Material Sciences (AREA)
- Developmental Biology & Embryology (AREA)
- Cell Biology (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Organic Chemistry (AREA)
- Reproductive Health (AREA)
- Biomedical Technology (AREA)
- Urology & Nephrology (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Zoology (AREA)
- Virology (AREA)
- Immunology (AREA)
- Biotechnology (AREA)
- Gynecology & Obstetrics (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Abstract
Description
その一方で、食生活の欧米化や車社会を中心とした生活様式の変化により、メタボリックシンドロームなどの新しい生活習慣病の概念が生まれ、社会の疾病構造が大きく変化している。特に動脈硬化性疾患が増え、虚血性心疾患の増加とともに末梢動脈疾患(PAD:peripheral arterial disease)が増加している。
PADは虚血肢という足の症状として現れる。しかし単なる足の病気ではなく、加齢や糖尿病を背景とした動脈硬化により末梢の血管の閉塞が起こり、虚血肢として現れたものである。このためPADは同じ動脈硬化性疾患である虚血性心疾患や脳疾患を伴うことが多い。予後は非常に悪く、死亡率は悪性腫瘍よりも高いといわれている。早期発見により適切な治療を行うことが重要である。
PADの内科的治療としては、運動療法、温熱療法などの理学療法や、シロスタゾール、ペラプロストナトリウム、塩酸サルポグレラート、塩酸チクロピジン、イコサペント酸エチル、アルプロスタジル、アルプロスタジルアルファデクス、アルガトロバン、パトロキソビン、ペントキシフィリンなどの抗血小板薬、抗血栓薬および血管拡張薬などをはじめとする薬物療法が行なわれている。
また、PADの外科的治療としては、バルーン拡張術、ステント留置術、アテレクトミーなどの血管内治療や、血栓内膜摘除術、バイパス術、交感神経切除術などの外科的手術が行われている。
その一つとして、成人の骨髄及び末梢血単核球中に血管内皮細胞に分化しうる血管内皮前駆細胞が存在することが報告され、骨髄由来単核細胞移植は下肢虚血動物モデルにおいて、血管新生や側副血行路の発達により下肢血流量増加作用を発揮することが確認された。(非特許文献1)
しかしながら、骨髄単核球移植による治療は多量の骨髄液採取を必要とし、侵襲が大きく、また、新鮮分離細胞のため骨髄細胞中の幹細胞及び前駆細胞量に個人差があり臨床効果に大きな差が出ることが明らかとなっている。
しかしながら、移植細胞の血管への長期生着や血管構成細胞への分化が見られないなど、再生医療の効果として十分なものとは言えない。
[1]生体の間葉系組織又は培養間葉系細胞に由来するSSEA-3陽性の多能性幹細胞を含む、末梢血流障害を治療するための細胞製剤。
[2]末梢血流障害が末梢動脈疾患である、[1]に記載の細胞製剤。
[3]末梢動脈疾患が、四肢の慢性動脈閉塞症である、[2]に記載の細胞製剤。
[4]末梢動脈疾患が、閉塞性動脈硬化症である、[2]または[3]に記載の細胞製剤。
[5]末梢動脈疾患が、閉塞性血栓血管炎(バージャー病)である、[2]または[3]に記載の細胞製剤。
[6]末梢動脈疾患が、膝窩動脈捕捉症候群である、[2]または[3]に記載の細胞製剤。
[7]前記多能性幹細胞が、以下の性質の全てを有する多能性幹細胞である、上記[1]~[6]のいずれかに記載の細胞製剤:
(i)テロメラーゼ活性が低いか又は無い;
(ii)三胚葉のいずれの胚葉の細胞に分化する能力を持つ;
(iii)腫瘍性増殖を示さない;及び
(iv)セルフリニューアル能を持つ。
[8]前記多能性幹細胞が、以下の性質の全てを有する多能性幹細胞である、上記[1]~[6]のいずれかに記載の細胞製剤:
(i)SSEA-3陽性;
(ii)CD105陽性;
(iii)テロメラーゼ活性が低いか又は無い;
(iv)三胚葉のいずれかの胚葉に分化する能力を持つ;
(v)腫瘍性増殖を示さない;及び
(vi)セルフリニューアル能を持つ。
[8]生体の間葉系組織又は培養間葉系細胞に由来するSSEA-3陽性の多能性幹細胞の、末梢血流障害を治療するための細胞製剤の製造のための使用。
[9]前記[1]~[7]のいずれかに記載の細胞製剤の有効量を、治療を必要とする患者に投与する工程を含む、末梢血流障害の治療方法。
[10]前記細胞製剤は静脈内に投与される、[9]の末梢血流障害の治療方法。
[11]前記細胞製剤は複数回投与される、[9]または[10]の末梢血流障害の治療方法。
間葉系幹細胞や自家骨髄細胞では静脈投与で細胞が障害部位に到達することが難しい、あるいは到達するとしてもその効率が非常に低いため筋肉注射で投与されることが一般的であるが、筋肉注射は連続治療が困難であるという問題がある。これに対し、Muse細胞等は静脈投与だけで障害部位に選択的に到達・集積することが可能であり、また静脈投与であるために複数回投与も可能である。これらのことから複数回の治療を行うことで、間葉系幹細胞や自家骨髄細胞よりも優れた治療効果が得られる可能性が示唆される。
本発明のSSEA-3陽性の多能性幹細胞(Muse細胞)を含む細胞製剤は、末梢動脈疾患の治療に使用される。
「末梢動脈疾患」としては、四肢の慢性動脈閉塞症に該当する疾患が好ましく、上記の疾患のうち、閉塞性動脈硬化症、閉塞性血栓血管炎および膝窩動脈捕捉症候群が好ましい。
レイノー病としては、一次性レイノー症候群および二次性レイノー症候群を含み、その原因は特に限定されず、膠原病によるもの、外傷によるもの、振動によるもの、胸郭出口症候群によるもの、慢性閉塞性動脈疾患によるもの、血液疾患によるもの、神経疾患によるもの、などが例示される。
(1)多能性幹細胞(Muse細胞)
本発明の細胞製剤に使用される多能性幹細胞は、本発明者らの一人である出澤が、ヒト生体内にその存在を見出し、「Muse(Multilineage-differentiating Stress Enduring)細胞」と命名した細胞である。Muse細胞は、骨髄液、脂肪組織(Ogura,F.,et al.,Stem Cells Dev.,Nov 20,2013(Epub)(published on Jan 17,2014))や皮膚の真皮結合組織等から得ることができるほか、広く組織や臓器の結合組織に存在することが知られている。また、この細胞は、多能性幹細胞と間葉系幹細胞の両方の性質を有する細胞であり、例えば、細胞表面マーカーである「SSEA-3(Stage-specific embryonic antigen-3)」陽性細胞、好ましくはSSEA-3陽性かつCD105陽性の二重陽性細胞として同定される。したがって、Muse細胞又はMuse細胞を含む細胞集団は、例えば、SSEA-3単独又はSSEA-3及びCD105の発現を指標として生体組織から分離することができる。Muse細胞の分離法、同定法、及び特徴などの詳細は、特許文献2(国際公開第WO2011/007900号)に開示されている。また、Muse細胞が様々な外的ストレスに対する耐性が高いことを利用して、蛋白質分解酵素処理や、低酸素条件、低リン酸条件、低血清濃度、低栄養条件、熱ショックへの暴露、有害物質存在下、活性酸素存在下、機械的刺激下、圧力処理下など各種外的ストレス条件下での培養によりMuse細胞を選択的に濃縮することができる。なお、本明細書においては、末梢動脈疾患を治療するための細胞製剤として、SSEA-3を指標として用いて、生体の間葉系組織又は培養間葉系組織から調製された多能性幹細胞(Muse細胞)又はMuse細胞を含む細胞集団を単に「SSEA-3陽性細胞」と記載することがある。また、本明細書においては、「非Muse細胞」とは、生体の間葉系組織又は培養間葉系細胞に含まれる細胞であって、「SSEA-3陽性細胞」以外の細胞を指すことがある。
前記外的ストレスは、プロテアーゼ処理、低酸素濃度での培養、低リン酸条件下での培養、低血清濃度での培養、低栄養条件での培養、熱ショックへの暴露下での培養、低温での培養、凍結処理、有害物質存在下での培養、活性酸素存在下での培養、機械的刺激下での培養、振とう処理下での培養、圧力処理下での培養又は物理的衝撃のいずれか又は複数の組み合わせであってもよい。
前記プロテアーゼによる処理時間は、細胞に外的ストレスを与えるために合計0.5~36時間行うことが好ましい。また、プロテアーゼ濃度は、培養容器に接着した細胞を剥がすとき、細胞塊を単一細胞にばらばらにするとき、又は組織から単一細胞を回収するときに用いられる濃度であればよい。
前記プロテアーゼは、セリンプロテアーゼ、アスパラギン酸プロテアーゼ、システインプロテアーゼ、金属プロテアーゼ、グルタミン酸プロテアーゼ又はN末端スレオニンプロテアーゼであることが好ましい。更に、前記プロテアーゼがトリプシン、コラゲナーゼ又はジスパーゼであることが好ましい。
(i)テロメラーゼ活性が低いか又は無い;
(ii)三胚葉のいずれの胚葉の細胞に分化する能力を持つ;
(iii)腫瘍性増殖を示さない;及び
(iv)セルフリニューアル能を持つ
からなる群から選択される少なくとも1つの性質を有してもよい。好ましくは、本発明の細胞製剤に使用されるMuse細胞は、上記性質を全て有する。
本発明の細胞製剤は、限定されないが、上記(1)で得られたMuse細胞又はMuse細胞を含む細胞集団を生理食塩水や適切な緩衝液(例えば、リン酸緩衝生理食塩水)に懸濁させることによって得られる。この場合、自家又は他家の組織から分離したMuse細胞数が少ない場合には、細胞移植前に細胞を培養して、所定の細胞数が得られるまで増殖させてもよい。なお、すでに報告されているように(国際公開第WO2011/007900号パンフレット)、Muse細胞は、腫瘍化しないため、生体組織から回収した細胞が未分化のまま含まれていても癌化の懸念が低く安全である。また、回収したMuse細胞の培養は、特に限定されないが、通常の増殖培地(例えば、10%仔牛血清を含むα-最少必須培地(α-MEM)など)において行うことができる。より詳しくは、上記国際公開第WO2011/007900号パンフレットを参照して、Muse細胞の培養及び増殖において、適宜、培地、添加物(例えば、抗生物質、血清)等を選択し、所定濃度のMuse細胞を含む溶液を調製することができる。ヒト対象に本発明の細胞製剤を投与する場合には、ヒトの腸骨から骨髄液を採取し、例えば、骨髄液からの接着細胞として骨髄間葉系幹細胞を培養して有効な治療量のMuse細胞が得られる細胞量に達するまで増やした後、Muse細胞をSSEA-3の抗原マーカーを指標として分離し、自家又は他家のMuse細胞を細胞製剤として調製することができる。あるいは、例えば、骨髄液から得られた骨髄間葉系幹細胞を外的ストレス条件下で培養して有効な治療量に達するまでMuse細胞を増殖、濃縮した後、自家又は他家のMuse細胞を細胞製剤として調製することができる。
本実施例におけるマウスを用いた実験プロトコールは、「京都府立医大動物実験等に関する規定」を遵守し、実験動物は、京都府立医大動物実験センターの監督下において該規定に沿って作製された。より具体的には、以下の手順により作製した。
8-10週齢の雌性BALB/Cヌードマウスをイソフルランの吸入により麻酔(誘導時:4%、維持時: 2%)した。下肢を切開し、実体顕微鏡(KONAN OPERATION MICROSCOPE KOM)下で、左総大腿動静脈、および左浅大腿動静脈末梢を5-0絹糸で結紮した。このようにして作製されたマウスを下肢虚血モデルマウスとして以下の実験に使用した。
ヒトMuse細胞の分離及び同定に関する国際公開第WO2011/007900号に記載された方法に準じて、Muse細胞を得た。Muse細胞のソースとしては市販の間葉系幹細胞(MSC、Lonza社)を用いた。移植に使用されるMuse細胞は、障害を受けた末梢動脈部位に生着したことを確認するために、緑色蛍光タンパク質(GFP)を発現し、細胞がこれにより標識されるように、予めレンチウイルス-GFP遺伝子をMuse細胞に導入した。GFPで標識されたMuse細胞をGFPとSSEA-3の二重の陽性細胞としてFACSにて分離した。またMSCからMuse細胞を分離した残りの細胞を非Muse細胞として使用した。また、GFP陽性MSCもFACSにて単離し、MSC群として使用した。
実施例1で作製した下肢虚血モデルマウスを4群に分け、モデル作製後、1日目に、各群のマウスにMuse細胞(3×104個、100μL)(Muse)、非Muse細胞(3×104個、100μL)(nMuse)、MSC(2×105個、100μL)(BM)あるいはVehicle(リン酸緩衝液)(Ve)を左大腿部2箇所に分けて投与した。一群の動物数は 5匹とした。
下肢虚血モデルマウス作製後、0、3、7、10及び14日に、二次元レーザー血流画像装置[laser doppler perfusion image (LDPI) analyzer (OMEGAZONE OZ-1, OMEGAWAVE, Inc. Tokyo, Japan)を用いて血流を測定した。各個体の左右両方の下肢血流を測定し、左側(患側)/右側(健側)の比を算出し、これをLDPIインデックスとした。
図1に示す通り、Muse細胞群では14日以降も血流改善が継続し、虚血した左下肢は健康な右下肢と同程度まで血流が改善した。一方、非Muse細胞群(nMuse)、MSC群(BM)及びVehicle群(Ve)では10日までは一定の血流改善を示すが14日以降は改善が見られなかった。
細胞投与後6日目の左側(患側)の下肢骨格筋のmRNAを抽出して、血管新生関連遺伝子として代表的なVEGF及びbFGF(特に、FGF-2)の発現量をreal-time RT-PCRの絶対定量法で測定した。測定方法は非特許文献8に基づいて行った。その結果を図2に示す。Muse細胞群は、Vehicle群と比較してこれら血管新生因子である血管新生関連遺伝子(mRNA)発現量が有意に高かった。
細胞投与後28日の左側(患側)の下肢骨格筋の組織を4%パラホルムアルデヒド(Paraformaldehude:PFA)によって固定し、パラフィン切片を作成した後、抗Isolectin GS-IB4抗体, Alexa Fluor 568 Conjugate(Thermo Fisher Scientific社整、300倍希釈で使用)を用いて虚血下肢骨格筋における血管内皮細胞の免疫組織化学染色を行い、骨格筋線維あたりの血管内皮細胞の割合を血管密度として測定した。その結果を図3に示す。Muse細胞群(図3左)では、Vehicle群(図3右)と比較してこれら虚血骨格筋内の血管密度が高いことがわかる。
野生型BALBcマウス(オス12週齢)を用いて、実施例1と同様にして、下肢虚血モデルマウスを作製した。作製した下肢虚血モデルマウスを群に分け、モデル作製後1日目に、各群のマウスに、Muse細胞(3×104個、200μL)(Muse)、非Muse細胞(3×104個、200μL)(non Muse)、あるいは骨髄単核細胞(2×105個、200μL)(BMMNC)を尾静脈内(i.v.)または筋肉内(i.m.)に注射した。対照として、PBSを尾静脈に注射した。一群の動物数は5匹とした。
Claims (8)
- 生体の間葉系組織又は培養間葉系細胞に由来するSSEA-3陽性の多能性幹細胞を含む、末梢血流障害を治療するための細胞製剤。
- 末梢血流障害が、末梢動脈疾患である、請求項1に記載の細胞製剤。
- 末梢動脈疾患が、四肢の慢性動脈閉塞症である、請求項2に記載の細胞製剤。
- 末梢動脈疾患が、閉塞性動脈硬化症である、請求項2または3に記載の細胞製剤。
- 末梢動脈疾患が、閉塞性血栓血管炎(バージャー病)である、請求項2または3に記載の細胞製剤。
- 末梢動脈疾患が、膝窩動脈捕捉症候群である、請求項2または3に記載の細胞製剤。
- 前記多能性幹細胞が、以下の性質の全てを有する多能性幹細胞である、上記請求項1~6のいずれかに記載の細胞製剤:
(i)テロメラーゼ活性が低いか又は無い;
(ii)三胚葉のいずれの胚葉の細胞に分化する能力を持つ;
(iii)腫瘍性増殖を示さない;及び
(iv)セルフリニューアル能を持つ。 - 前記多能性幹細胞が、以下の性質の全てを有する多能性幹細胞である、上記請求項1~6のいずれかに記載の細胞製剤:
(i)SSEA-3陽性;
(ii)CD105陽性;
(iii)テロメラーゼ活性が低いか又は無い;
(iv)三胚葉のいずれかの胚葉に分化する能力を持つ;
(v)腫瘍性増殖を示さない;及び
(vi)セルフリニューアル能を持つ。
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SG11202105686UA SG11202105686UA (en) | 2018-11-30 | 2019-11-29 | Therapeutic agent of peripheral blood flow disorder |
| JP2020557865A JP7473207B2 (ja) | 2018-11-30 | 2019-11-29 | 末梢血流障害の治療剤 |
| US17/298,367 US20220000936A1 (en) | 2018-11-30 | 2019-11-29 | Therapeutic agent of peripheral blood flow disorder |
| AU2019388016A AU2019388016B2 (en) | 2018-11-30 | 2019-11-29 | Therapeutic agent of peripheral blood flow disorder |
| EP19891644.7A EP3888751B1 (en) | 2018-11-30 | 2019-11-29 | Cell product for use in treating a peripheral blood flow disorder |
| CN201980078419.XA CN113195054A (zh) | 2018-11-30 | 2019-11-29 | 外周血流紊乱的治疗剂 |
| KR1020217018397A KR102901451B1 (ko) | 2018-11-30 | 2019-11-29 | 말초 혈류 장애의 치료제 |
| CA3121444A CA3121444A1 (en) | 2018-11-30 | 2019-11-29 | Therapeutic agent of peripheral blood flow disorder |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-225295 | 2018-11-30 | ||
| JP2018225295 | 2018-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020111249A1 true WO2020111249A1 (ja) | 2020-06-04 |
Family
ID=70853028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/046847 Ceased WO2020111249A1 (ja) | 2018-11-30 | 2019-11-29 | 末梢血流障害の治療剤 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20220000936A1 (ja) |
| EP (1) | EP3888751B1 (ja) |
| JP (1) | JP7473207B2 (ja) |
| KR (1) | KR102901451B1 (ja) |
| CN (1) | CN113195054A (ja) |
| AU (1) | AU2019388016B2 (ja) |
| CA (1) | CA3121444A1 (ja) |
| SG (1) | SG11202105686UA (ja) |
| WO (1) | WO2020111249A1 (ja) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011007900A1 (ja) | 2009-07-15 | 2011-01-20 | Dezawa Mari | 生体組織から単離できる多能性幹細胞 |
| WO2018021515A1 (ja) * | 2016-07-29 | 2018-02-01 | 国立大学法人東北大学 | 血管障害の予防又は治療剤 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012024296A1 (en) * | 2010-08-20 | 2012-02-23 | University Of Miami | Arterial repair with cultured bone marrow cells and whole bone marrow |
| CN102641297B (zh) * | 2011-02-21 | 2016-02-24 | 杨子江 | 治疗外周动脉粥样硬化引起的缺血性疾病的制剂及其制备方法 |
-
2019
- 2019-11-29 SG SG11202105686UA patent/SG11202105686UA/en unknown
- 2019-11-29 AU AU2019388016A patent/AU2019388016B2/en active Active
- 2019-11-29 KR KR1020217018397A patent/KR102901451B1/ko active Active
- 2019-11-29 EP EP19891644.7A patent/EP3888751B1/en active Active
- 2019-11-29 CN CN201980078419.XA patent/CN113195054A/zh active Pending
- 2019-11-29 CA CA3121444A patent/CA3121444A1/en active Pending
- 2019-11-29 WO PCT/JP2019/046847 patent/WO2020111249A1/ja not_active Ceased
- 2019-11-29 US US17/298,367 patent/US20220000936A1/en active Pending
- 2019-11-29 JP JP2020557865A patent/JP7473207B2/ja active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011007900A1 (ja) | 2009-07-15 | 2011-01-20 | Dezawa Mari | 生体組織から単離できる多能性幹細胞 |
| JP5185443B2 (ja) | 2009-07-15 | 2013-04-17 | 真理 出澤 | 生体組織から分離できる多能性幹細胞画分 |
| WO2018021515A1 (ja) * | 2016-07-29 | 2018-02-01 | 国立大学法人東北大学 | 血管障害の予防又は治療剤 |
Non-Patent Citations (11)
| Title |
|---|
| CUNPING YINYUAN LIANGJIAN ZHANGGUANGPING RUANZIAN LIRONGQING PANGXINGHUA PAN: "Umbilical Cord-Derived Mesenchymal Stem Cells Relieve Hindlimb Ischemia through Enhancing Angiogenesis in Tree Shrews", STEM CELLS INTERNATIONAL, vol. 2016, no. 2016, pages 9 |
| HOU X ET AL., MOL BIOL REP, vol. 37, 2010, pages 1467 - 1475 |
| KONDO K ET AL., ARTERIOSCLER. THROMB. VASE. BIOL., vol. 29, 2009, pages 61 - 66 |
| KURODA Y ET AL., NAT PROTC, vol. 8, 2013, pages 1391 - 1415 |
| KURODA Y ET AL., PROC NATL ACAD SCI USA, vol. 107, 2010, pages 8639 - 8643 |
| LIU J.HAO H.XIA L. ET AL.: "Hypoxia pretreatment of bone marrow mesenchymal stem cells facilitates angiogenesis by improving the function of endothelial cells in diabetic rats with lower ischemia", PLOS ONE, vol. 10, no. 5, 2015 |
| MATOBA, SATOAKI: "Therapeutic Angiogenesis for Peripheral Artery Disease", KYŌTO FURITSU IKA DAIGAKU ZASSHI - JOURNAL OF KYŌTO PREFECTURAL UNIVERSITY OF MEDICINE, KYOTO-FU IGAKU SHINKOKAI, KYOTO, JP, vol. 125, no. 11, 30 November 2015 (2015-11-30), JP, pages 759 - 767, XP009528338, ISSN: 0023-6012 * |
| OGURA, F. ET AL., STEM CELLS DEV., 20 November 2013 (2013-11-20) |
| See also references of EP3888751A4 |
| WAKAO S ET AL., PROC NATL ACAD SCI USA, vol. 108, 2011, pages 9875 - 9880 |
| XIE N.LI Z.ADESANYA T. M. ET AL.: "Transplantation of placenta-derived mesenchymal stem cells enhances angiogenesis after ischemic limb injury in mice", JOURNAL OF CELLULAR AND MOLECULAR MEDICINE, vol. 20, no. 1, 2016, pages 29 - 37, XP055466357, DOI: 10.1111/jcmm.12489 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20210099014A (ko) | 2021-08-11 |
| SG11202105686UA (en) | 2021-06-29 |
| KR102901451B1 (ko) | 2025-12-16 |
| EP3888751C0 (en) | 2024-04-17 |
| US20220000936A1 (en) | 2022-01-06 |
| JP7473207B2 (ja) | 2024-04-23 |
| CN113195054A (zh) | 2021-07-30 |
| JPWO2020111249A1 (ja) | 2020-06-04 |
| AU2019388016A1 (en) | 2021-07-08 |
| EP3888751B1 (en) | 2024-04-17 |
| AU2019388016B2 (en) | 2024-12-19 |
| CA3121444A1 (en) | 2020-06-04 |
| EP3888751A1 (en) | 2021-10-06 |
| EP3888751A4 (en) | 2022-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5968442B2 (ja) | 心筋梗塞の修復再生を誘導する多能性幹細胞 | |
| JPWO2008018450A1 (ja) | 脂肪組織由来多分化能幹細胞を含有する細胞製剤 | |
| JP7712643B2 (ja) | 表皮水疱症の治療剤 | |
| JP6452107B2 (ja) | 糖尿病性皮膚潰瘍治療のための多能性幹細胞 | |
| JP5845089B2 (ja) | 肢虚血の治療 | |
| JP7029729B2 (ja) | 血管障害の予防又は治療剤 | |
| AU2017305067A1 (en) | Alleviation and treatment of ischemia reperfusion-induced lung injury using pluripotent stem cells | |
| JP7618191B2 (ja) | 臓器線維症の予防または治療剤 | |
| JP7473207B2 (ja) | 末梢血流障害の治療剤 | |
| Fukuta et al. | Synergistic effect of ex-vivo quality and quantity cultured mononuclear cells and mesenchymal stem cell therapy in ischemic hind limb model mice | |
| JP2025123077A (ja) | 脊髄梗塞治療のための多能性幹細胞 | |
| WO2022138955A1 (ja) | 動脈解離の治療剤 | |
| WO2021029346A1 (ja) | 脳血管性認知症の治療または予防剤 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19891644 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020557865 Country of ref document: JP Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 3121444 Country of ref document: CA |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 20217018397 Country of ref document: KR Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 2019891644 Country of ref document: EP Effective date: 20210630 |
|
| ENP | Entry into the national phase |
Ref document number: 2019388016 Country of ref document: AU Date of ref document: 20191129 Kind code of ref document: A |