WO2015068253A1 - 肝組織培養用デバイス、肝組織培養用システム、肝組織培の培養方法及び肝機能の評価方法 - Google Patents
肝組織培養用デバイス、肝組織培養用システム、肝組織培の培養方法及び肝機能の評価方法 Download PDFInfo
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- C12M23/00—Constructional details, e.g. recesses, hinges
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- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/067—Hepatocytes
- C12N5/0671—Three-dimensional culture, tissue culture or organ culture; Encapsulated cells
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/573—Immunoassay; Biospecific binding assay; Materials therefor for enzymes or isoenzymes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6863—Cytokines, i.e. immune system proteins modifying a biological response such as cell growth proliferation or differentiation, e.g. TNF, CNF, GM-CSF, lymphotoxin, MIF or their receptors
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- C12N2502/00—Coculture with; Conditioned medium produced by
- C12N2502/13—Coculture with; Conditioned medium produced by connective tissue cells; generic mesenchyme cells, e.g. so-called "embryonic fibroblasts"
- C12N2502/1352—Mesenchymal stem cells
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- C12N2502/00—Coculture with; Conditioned medium produced by
- C12N2502/14—Coculture with; Conditioned medium produced by hepatocytes
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- C12N2502/00—Coculture with; Conditioned medium produced by
- C12N2502/28—Vascular endothelial cells
Definitions
- the present invention relates to a liver tissue culture device, a liver tissue culture system, a liver tissue culture method, and a liver function evaluation method.
- the present inventors have reported that high liver function is expressed in a co-culture system of endothelial cells and liver parenchymal cells that form a network structure by selecting a scaffold (see Non-Patent Documents 1 and 2). ).
- Non-Patent Document 2 The inventors of the present application have already reported that a co-culture system of networked endothelial cells and hepatocytes has high liver function (see Non-Patent Document 2). However, this structure begins to collapse about 3 days after construction. Therefore, there is a problem that long-term testing is difficult.
- the object of the present invention is to maintain the structure of a co-culture system of networked skin cell and hepatocyte cells for a longer period of time.
- the device for culturing liver tissue includes a culture chamber to which at least two flow paths for introducing and discharging a medium are connected, and a gel serving as a cell scaffold is contained in the culture chamber.
- a co-culture system containing endothelial cells, hepatocyte cells, and mesenchymal cells is co-cultured on the gel so as to have a tubular structure. It is.
- the system for culturing hepatocytes according to the present invention has a function of continuously feeding the medium into the culture chamber or a continuous suction of the medium from the culture chamber by connecting a pump to the device for culturing hepatocytes of the present invention. It is characterized by having a function.
- the endothelium is obtained by seeding and co-culturing at least endothelial cells, hepatocyte cells and mesenchymal cells on a gel serving as a cell scaffold.
- a co-culture system comprising at least a cell line cell, the hepatocyte cell line and the mesenchymal cell line and having a tubular structure is cultured.
- the method for evaluating liver function according to the present invention is characterized in that liver function is evaluated using a co-culture system cultured by the method for culturing hepatocytes of the present invention.
- the device for culturing liver tissue, the system for culturing hepatocytes, the method for culturing hepatocytes, and the method for evaluating liver function according to the present invention include a structure of a co-culture system of networked skin cell cells and hepatocyte cells. It can be maintained for a longer period.
- FIG. 2 is a schematic perspective view and a schematic cross-sectional view showing a partial cross-sectional view of a structure of a co-culture system including a network-formed endothelial cell line cell, hepatocyte cell line, and mesenchymal cell line.
- FIG. 2 is a photograph showing the results of co-culturing endothelial cells and hepatocytes using the device for culturing liver tissue shown in FIG. 1, and the results when stellate cells are added thereto.
- the gel preferably contains at least laminin, collagen and entactin.
- the gel preferably contains at least EHS (Engelbreth-Holm-Swarm) -gel.
- the mesenchymal cells include at least stellate cells or fibroblasts.
- the culture chamber portion and the lid portion of the culture chamber can be opened and closed, and a filter is disposed in the outlet side flow channel which is one of the two flow channels.
- a filter is disposed in the outlet side flow channel which is one of the two flow channels.
- liver tissue culture device of the present invention examples in which PDMS or silicone rubber is used in at least a part of the culture chamber can be given.
- the structure of the device for culturing liver tissue of the present invention is not limited to this.
- the gel preferably contains at least laminin, collagen and entactin.
- the gel preferably contains at least EHS-gel.
- the mesenchymal cells preferably contain at least stellate cells or fibroblasts.
- the method for culturing hepatocytes of the present invention it is preferable to continuously supply a medium to the co-culture system.
- the method for culturing hepatocytes of the present invention includes a configuration in which the medium is intermittently supplied to the co-culture system instead of continuous supply.
- examples in which the device for culturing hepatocytes of the present invention or the system for culturing hepatocytes of the present invention can be used in the method for culturing hepatocytes of the present invention.
- the method for culturing hepatocytes of the present invention is not limited to this.
- endothelial cells when endothelial cells are cultured using a special scaffold such as EHS-gel, the endothelial cells form a tubular network structure.
- the liver parenchymal cells migrate to the network of endothelial cells, take a structure close to the liver tissue in the living body, and express high liver function.
- this structure could only be maintained for about 3 days.
- the present inventors have found that by adding mesenchymal cells such as stellate cells to this tubular structure, a tubular structure close to liver tissue in the living body can be maintained for a long time.
- the device for culturing liver tissue or the system for culturing liver tissue of the present invention is used, a good culture environment is maintained by continuous supply or intermittent supply of the medium from the flow path to the culture chamber.
- the liver tissue culturing device and the liver tissue culturing system of the present invention can realize an environment very close to the living body, which is impossible on a petri dish. Therefore, the liver tissue culture device and the liver tissue culture system of the present invention can be a device and system that can maintain a tubular structure having a high liver function for a long period of time.
- the culture method for culturing liver tissue of the present invention can maintain a tubular structure of a co-culture system including network-formed endothelial cell line cells, hepatocyte line cells and mesenchymal cells for a longer period of time.
- the method for culturing liver tissue culture according to the present invention using the device for culturing liver tissue or the system for culturing liver tissue according to the present invention includes an endothelial cell system cell, hepatocyte system cell and A co-culture system containing mesenchymal cells can be cultured.
- the liver function evaluation method of the present invention uses a co-culture system including endothelial cell line cells, hepatocyte line cells and mesenchymal cells cultured by the liver tissue culture method of the present invention. Can be evaluated.
- the liver function evaluation method of the present invention using the co-culture system cultured by the liver cell culture method of the present invention using the liver tissue culture device or the liver tissue culture system of the present invention is very useful in vivo.
- the liver function can be evaluated in an environment close to.
- the present invention is a technique for cell culture, and particularly useful for an artificial organ such as an artificial liver or a drug metabolism test.
- FIG. 1 is a schematic cross-sectional view for explaining one embodiment of a device for culturing liver tissue.
- FIG. 2 is a plan view of the embodiment.
- the cross section in FIG. 1 corresponds to the position AA in FIG.
- the liver tissue culture device 1 is roughly composed of a culture chamber portion 3 and a lid portion 5.
- the culture chamber portion 3 includes a base plate 7 and a PDMS structure 9.
- the lid portion 5 includes a filter holding layer 11 and a PDMS structure 13.
- the base plate 7 is made of synthetic quartz, for example.
- the PDMS structure 9 and the PDMS structure 13 are made of, for example, SILPOT184 (manufactured by Toray Dow Corning).
- the filter holding layer 11 has a structure in which, for example, a filter 11a made of a porous film is sandwiched between silicone rubber sheets 11b.
- the filter 11a is, for example, a commercially available polycarbonate filter (manufactured by Whatman, CYCLOPORE 7062-2513).
- These members all have a flat plate shape with a width of 20 mm (millimeters) and a length of 20 mm.
- the thickness of the base plate 7 is 1 mm, for example.
- the thickness of the PDMS structure 9 is 3 mm, for example.
- the thickness of the porous film constituting the filter 11a is, for example, 0.25 mm.
- the thickness of the silicone rubber sheet 11b is, for example, 0.2 mm.
- the thickness of the PDMS structure 13 is 3 mm, for example.
- a culture chamber 15 composed of a through hole is formed in the center of the PDMS structure 9.
- the diameter of the culture chamber 15 is, for example, 10 mm.
- a groove 9a provided on the side wall of the culture chamber 15 and a groove 9b connected to the groove 9a are also formed.
- the depth of the groove 9a and the groove 9b is, for example, 0.1 mm.
- the width of the groove 9b is, for example, 1 mm.
- the length of the groove 9b is, for example, about 5 mm.
- the PDMS structure 9 has, for example, a two-layer structure.
- the grooves 9 a and 9 b are formed by recesses formed by molding on the surface of one of the two layers of PDMS constituting the PDMS structure 9.
- the grooves 9a and 9b are disposed on the bonding surface of the two layers of PDMS.
- the filter 11 a is arranged in the center of the filter holding layer 11.
- the diameter of the filter 11a is 11 mm, for example.
- the filter 11a is disposed at a position covering the top of the culture chamber 15.
- a through hole is formed in the center of the silicone rubber sheet 11b.
- a filter 11a is disposed in the through hole.
- the silicone rubber sheet 11 b holds the filter 11 a so as to be in close contact with the PDMS structure 13.
- a circular recess 13 a is formed in the center of the PDMS structure 13.
- the diameter of the recess 13a is, for example, 8 mm.
- the depth of the recess 13a is, for example, 0.1 mm.
- the PDMS structure 13 is also formed with a groove 13b connected to the recess 13a.
- the groove 13b is formed by PDMS molding.
- the depth of the groove 13b is, for example, 0.1 mm.
- the width of the groove 13b is, for example, 1 mm.
- the length of the groove 13b is, for example, about 5 mm.
- a through hole 17 connected to the groove 9b is formed in the PDMS structure 9, the silicone rubber sheet of the filter holding layer 11, and the PDMS structure 13, a through hole 17 connected to the groove 9b is formed.
- the PDMS structure 13 is formed with a through hole 19 connected to the groove 13b.
- the diameters of the through hole 17 and the through hole 19 are, for example, 1.5 mm.
- the through hole 17 and the through hole 19 are formed by, for example, through hole processing.
- the inlet side channel 21 of the culture medium is formed by the groove 9a, the groove 9b, and the through hole 17.
- a culture medium outlet-side flow path 23 is formed by the recess 13 a, the groove 13 b, and the through hole 19.
- the culture chamber portion 3 is formed by bonding the base plate 7 and the PDMS structure 9 together. Further, the filter holding layer 11 and the PDMS structure 13 are bonded together to form the lid portion 5. When bonding the members, it is preferable to activate and bond the bonding surfaces of the members with oxygen plasma or ultraviolet rays in order to obtain strong adhesion.
- the liver tissue culture device 1 By overlapping the lid portion 5 on the upper part of the culture chamber portion 3, the liver tissue culture device 1 according to the present embodiment is formed. Since the silicone rubber constituting a part of the filter holding layer 11 has self-adsorption property, the lid portion 5 can be easily attached to and detached from the culture chamber portion 3. Such a structure of the liver tissue culture device 1 is disclosed in Patent Document 1, for example.
- a gel 25 serving as a cell scaffold is accommodated.
- the gel 25 is, for example, EHS-gel.
- EHS-gel is a basement membrane preparation isolated from EHS mouse sarcoma cells and is rich in laminin, type IV collagen and proteoglycans. This EHS-gel liquefies at a low temperature and becomes solid at a normal temperature. Accordingly, the EHS-gel is poured into the culture chamber 15 in a state where the liver tissue culture device 1 is cooled, and the EHS-gel is fixed to the bottom surface of the culture chamber 15 by, for example, standing in a 37 ° C. incubator or at room temperature. Can do.
- Such coating with a scaffold may be performed at the stage of manufacturing the liver tissue culture device 1 or may be performed by a user who has purchased the liver tissue culture device 1.
- a co-culture system 27 containing endothelial cells, hepatocyte cells, and mesenchymal cells is co-cultured on the gel 25 so as to have a tubular structure.
- Endothelial cells are, for example, hippocampal endothelial cells, human umbilical vein (arterial) endothelial cells, TD2, GH7, and the like.
- hepatocyte cells include hepatocytes, HepaRG, Huh-7, Hep G2, TLR2, Hepa1-6, and hepatic progenitor cells.
- mesenchymal cells include stellate cells, fibroblasts, HFO, NIH-3T3, mouse fetal fibroblasts, and the like.
- stellate cells include stellate cells, TWNT-4, LX-2, LI90, and RI-T.
- FIG. 3 is a schematic diagram for explaining an embodiment of a hepatocyte culture system using the liver tissue culture device 1 according to the present embodiment.
- the hepatocyte culture system 31 is a combination of the liver tissue culture device 1 and a liquid feeding mechanism for continuously feeding a medium to the liver tissue culture device 1.
- the liquid feeding mechanism includes a culture medium storage part 33, a culture medium supply pipe 35, a culture medium discharge pipe 37, a waste liquid storage part 39, a liquid supply pump 41, and a control part 43.
- the medium supply pipe 35 is inserted into the medium containing part 33.
- the other end of the medium supply pipe 35 is connected to the inlet-side channel 21 of the liver tissue culture device 1.
- One end of the medium discharge pipe 37 is connected to the outlet-side flow path 23 of the liver tissue culture device 1.
- the other end of the medium discharge pipe 37 is inserted into the waste liquid storage unit 39.
- the liquid feed pump 41 is connected to the culture medium supply pipe 35.
- the controller 43 controls the operation of the liquid feed pump 41.
- the medium accommodated in the medium accommodating part 33 is sucked by the liquid feeding pump 41 and sent to the liver tissue culture device 1 through the medium supply pipe 35.
- the medium supplied to the liver tissue culture device 1 is introduced into the culture chamber 15 from the peripheral surface of the culture chamber 15 through the inlet-side flow path 21 as indicated by an arrow in FIG.
- the culture medium in the culture chamber 15 With the introduction of the culture medium into the culture chamber 15, a part of the culture medium in the culture chamber 15 passes from the culture chamber 15 to the filter portion of the filter holding layer 11 and the outlet-side flow path 23 as indicated by the arrows in FIG. 1. It is discharged to the outside through.
- the medium discharged to the outside of the liver tissue culture device 1 is discharged to the waste liquid storage unit 39 through the medium discharge pipe 37.
- the liver tissue culturing device 1 passes the filter portion of the filter holding layer 11 when the medium in the culture chamber 15 is discharged from the outlet side channel 23, so that the outlet side channel 23 is clogged by the peeled gel 25. The probability that it will end up can be reduced.
- the recess 13a constituting the channel end of the outlet channel 23 has a larger area than the end of the groove 13b. , Local strong liquid flow is less likely to occur. Thereby, the effect 1 which suppresses peeling of the gel 25 is also acquired for the device 1 for liver tissue culture.
- the liver tissue culture device 1 is advantageous for long-term culture of cells.
- the hepatocyte culture system 31 shown in FIG. 3 includes a liquid feed pump 41 in the medium supply pipe 35 and a function of continuously feeding the medium into the culture chamber 15, but the hepatocyte culture of the present invention.
- the system for use is not limited to this.
- the hepatocyte culture system 45 includes a liquid feed pump 41 in the medium discharge pipe 37 and a function of continuously sucking the medium from the culture chamber 15. You may be allowed to.
- the hepatocyte culture system of the present invention is not limited to the configuration shown in FIG. 3 or FIG.
- the culture chamber portion 3 and the lid portion 5 are sterilized with an autoclave, alcohol, or the like.
- the sterilized culture chamber part 3 and the lid part 5 are bonded together.
- the cooled EHS-gel is poured into the culture chamber 15, and the EHS-gel is spread over the bottom surface of the culture chamber 15.
- EHS-gel is gelled at 37 ° C., for example, and gel 25 made of EHS-gel is fixed in culture chamber 15.
- Sinusoidal endothelial cells are seeded on the gel 25 to form an endothelial cell network.
- a stellate cell is seed
- stellate cells are incorporated into the endothelial cell network, and hepatocytes migrate around them to form a co-culture system 27 having a structure close to the actual liver structure.
- endothelial cell line cells may be seeded simultaneously.
- the cells may be seeded in the order of endothelial cell line, hepatocyte line, and mesenchymal line.
- FIG. 5 is a photograph showing the state of the epithelial endothelial cells and liver parenchymal cells formed on the EHS-gel network using the liver tissue culture device 1 according to the present example.
- mesenchymal cells are not co-cultured.
- FIG. 6 is a schematic perspective view and a schematic cross-sectional view partially showing a cross-sectional view of a structure of a co-culture system including networked endothelial cell cells, hepatocyte cells, and mesenchymal cells. It is.
- Endothelial endothelial cells were seeded in a culture chamber 15 coated with EHS-gel to form an endothelial cell network, and then hepatocytes were seeded on the endothelial cells to perform cell culture.
- hepatocytes were seeded on the endothelial cells to perform cell culture.
- liver parenchymal cells 49 migrate in the network of endothelial cells 47 and have a structure close to liver tissue in the living body.
- the results of the liver function evaluation test using the above hepatocytes are shown in FIG.
- the liver tissue culture device 1 of this example (“device” in the figure) and a common cell culture petri dish (“petriette” in the figure) were used as comparative examples. (GH7)) and hepatic parenchymal cells (“hepatocytes" in the figure) were cultivated individually or in a co-culture system of both, and the urea synthesis ability of each cultured cell was evaluated.
- the medium was supplied continuously at a flow rate of 40 ⁇ L / h (microliter / hour) for 24 hours. In the culture, the medium was changed at regular intervals.
- the co-culture system shows higher liver function than that in the case of culturing with hepatocytes alone.
- the cells cultured with the device for culturing liver tissue of the present invention show higher liver function than those cultured with a petri dish. This is presumably because in the culture using the device for culturing liver tissue, since the medium was continuously supplied, the tissue was subjected to shear stress (shear stress), and the culture was performed in an environment closer to the living body.
- the liver tissue culture device 1 can prevent clogging of the flow path due to the peeling of the scaffold material as described above. Therefore, the liver tissue culturing device 1 can stably cultivate hepatocytes in an environment close to the living body for a long period of time. For this reason, the device 1 for culturing liver tissue can be used for research in various systems such as a drug metabolism test and can be expected to be applied to an artificial liver.
- FIG. 8 is a photograph showing the results of co-culturing endothelial cells and liver parenchymal cells using the device 1 for culturing liver tissue according to the present example, and the results when stellate cells were added thereto.
- the liver function can be examined using the liver tissue culture device of the present invention or the liver tissue culture system of the present invention. Specifically, an analysis system capable of searching for a physiologically active substance, such as a pharmacokinetic test, can be considered.
- stellate cells are added as mesenchymal cells, but long-term network structure maintenance can be realized even when stellate cells other than TWNT-4 are added. . Even when mesenchymal cells other than stellate cells are added, long-term network structure can be maintained.
- EHS-gel is used as a gel as a scaffold for cells, but the gel used in the present invention is not limited to this.
- the gel used in the present invention may be a gel in which a co-culture system containing endothelial cell lines, hepatocyte cells and mesenchymal cells forms a tubular structure, preferably a network structure.
- the gel used in the present invention is not limited to EHS-gel, and may be, for example, a gel containing at least laminin, collagen and entactin, or may be a gel in which other components are mixed with EHS-gel. Good.
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- Gastroenterology & Hepatology (AREA)
- Clinical Laboratory Science (AREA)
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Abstract
Description
肝臓以外の臓器の細胞は1細胞につき1機能であることが多い。これに対し、肝臓中の肝細胞は1つで100以上の特異的機能を有している。
このような肝組織培養用デバイス1の構造は、例えば特許文献1に開示されている。
このように、肝組織培養用デバイス1は細胞の長期培養に有利である。
まず、培養室部分3及び蓋部分5をオートクレーブやアルコール等によって滅菌処理する。滅菌処理された培養室部分3と蓋部分5を貼り合わせる。冷却したEHS-gelを培養室15に流し込み、培養室15の底面にEHS-gelを行き渡らせる。EHS-gelを例えば37℃でゲル化させてEHS-gelからなるゲル25を培養室15内に固定する。
図5は、本実施例に係る肝組織培養用デバイス1を用いてEHS-gel上にネットワーク形成された類胴内皮細胞及び肝実質細胞の状態を示す写真である。なお、図5では間葉系の細胞は共培養されていない。図6は、ネットワーク形成された内皮細胞系の細胞、肝細胞系の細胞及び間葉系の細胞を含む共培養系の構造を一部断面で示した模式的な斜視図及び模式的な断面図である。
細胞播種の条件は次のとおりである。
GH7: 5×105セル/φ3.5cm(10%FBS-DMEM(Invitrogen社の製品))
Hepatocyte:5×105セル/φ3.5cm(10%FBS-DMEM(Invitrogen社の製品))
HUVEC: 4×105セル/φ3.5cm(EGM-2:内皮細胞培地キット-2(Lonza社の製品))
TWNT-4: 1×105セル/φ3.5cm(10%FBS-DMEM(Invitrogen社の製品))
3 培養室部分
5 蓋部分
15 培養室
21 入口側流路
23 出口側流路
25 ゲル
27 内皮細胞系の細胞、肝細胞系の細胞及び間葉系の細胞を含む共培養系
31,45 肝組織培養用システム
Claims (15)
- 少なくとも培地を導入及び排出するための少なくとも2本の流路が接続されている培養室を備え、
前記培養室の中に細胞の足場材となるゲルが収容されており、
前記ゲル上で内皮細胞系の細胞、肝細胞系の細胞及び間葉系の細胞を含む共培養系が管状の構造をもつように共培養されていることを特徴とする肝組織培養用デバイス。 - 前記ゲルはラミニン、コラーゲン及びエンタクチンを少なくとも含んでいることを特徴とする請求項1に記載の肝細胞培養用デバイス。
- 前記ゲルはEHS-gelを少なくとも含んでいることを特徴とする請求項1又は2に記載の肝細胞培養用デバイス。
- 前記間葉系の細胞は少なくとも星細胞系の細胞又は線維芽細胞を含んでいることを特徴とする請求項1から3のいずれか一項に記載の肝細胞培養用デバイス。
- 前記培養室の培養室部分と蓋部分が開閉可能であり、かつ前記2本の流路のうちの1つである出口側流路にフィルターが配置されていることを特徴とする請求項1から4のいずれか一項に記載の肝細胞培養用デバイス。
- 前記培養室の少なくとも一部にPDMS又はシリコーン系ゴムが用いられていることを特徴とする請求項1から5のいずれか一項に記載の肝細胞培養用デバイス。
- 請求項1から6のいずれか一項に記載の肝細胞培養用デバイスにポンプを接続することにより、前記培養室内に前記培地を連続送液する機能を備えたことを特徴とする肝細胞培養用システム。
- 請求項1から6のいずれか一項に記載の肝細胞培養用デバイスにポンプを接続することにより、前記培養室内から前記培地を連続吸引する機能を備えたことを特徴とする肝細胞培養用システム。
- 細胞の足場材となるゲル上に少なくとも内皮細胞系の細胞、肝細胞系の細胞及び間葉系の細胞を播種して共培養することにより、前記内皮細胞系の細胞、前記肝細胞系の細胞及び前記間葉系の細胞を少なくとも含み、かつ管状の構造をもつ共培養系を培養することを特徴とする肝細胞の培養方法。
- 前記ゲルはラミニン、コラーゲン及びエンタクチンを少なくとも含んでいることを特徴とする請求項9に記載の肝細胞の培養方法。
- 前記ゲルはEHS-gelを少なくとも含んでいることを特徴とする請求項9又は10に記載の肝細胞の培養方法。
- 前記間葉系の細胞は少なくとも星細胞系の細胞又は線維芽細胞を含んでいることを特徴とする請求項9から11のいずれか一項に記載の肝細胞の培養方法。
- 前記共培養系に培地を連続供給することを特徴とする請求項9から12のいずれか一項に記載の肝細胞の培養方法。
- 請求項1から6のいずれか一項の肝細胞培養用デバイス、又は請求項7もしくは8に記載の肝細胞培養用システムが用いられることを特徴とする請求項9から13のいずれか一項に記載の肝細胞の培養方法。
- 請求項9から14のいずれか一項に記載の肝細胞の培養方法によって培養された前記共培養系を用いて肝機能を評価することを特徴とする肝機能の評価方法。
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| US15/034,031 US10336987B2 (en) | 2013-11-08 | 2013-11-08 | Liver tissue culturing device, liver tissue culturing system, liver tissue culturing method, and liver function evaluation method |
| JP2015546218A JP6148738B2 (ja) | 2013-11-08 | 2013-11-08 | 肝組織培養用デバイス、肝組織培養用システム、肝組織培の培養方法及び肝機能の評価方法 |
| PCT/JP2013/080207 WO2015068253A1 (ja) | 2013-11-08 | 2013-11-08 | 肝組織培養用デバイス、肝組織培養用システム、肝組織培の培養方法及び肝機能の評価方法 |
| CN201380080662.8A CN105705627A (zh) | 2013-11-08 | 2013-11-08 | 肝组织培养用装置、肝组织培养用系统、肝组织的培养方法和肝功能的评价方法 |
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| CN112410220A (zh) * | 2020-12-07 | 2021-02-26 | 桂林医学院 | 仿肝板结构肝细胞三维培养装置 |
| JPWO2021100709A1 (ja) * | 2019-11-19 | 2021-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011244713A (ja) * | 2010-05-25 | 2011-12-08 | Shimadzu Corp | 細胞培養デバイス、細胞培養システム、及び細胞培養方法 |
| WO2013047639A1 (ja) * | 2011-09-27 | 2013-04-04 | 公立大学法人横浜市立大学 | 組織及び臓器の作製方法 |
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| JP2011244713A (ja) * | 2010-05-25 | 2011-12-08 | Shimadzu Corp | 細胞培養デバイス、細胞培養システム、及び細胞培養方法 |
| WO2013047639A1 (ja) * | 2011-09-27 | 2013-04-04 | 公立大学法人横浜市立大学 | 組織及び臓器の作製方法 |
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| JPWO2021100709A1 (ja) * | 2019-11-19 | 2021-05-27 | ||
| WO2021100709A1 (ja) * | 2019-11-19 | 2021-05-27 | 凸版印刷株式会社 | 細胞構造体及びその製造方法並びに被験物質の肝毒性の評価方法 |
| CN112410220A (zh) * | 2020-12-07 | 2021-02-26 | 桂林医学院 | 仿肝板结构肝细胞三维培养装置 |
| CN112410220B (zh) * | 2020-12-07 | 2022-10-18 | 桂林医学院 | 仿肝板结构肝细胞三维培养装置 |
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| US10336987B2 (en) | 2019-07-02 |
| JPWO2015068253A1 (ja) | 2017-03-09 |
| CN105705627A (zh) | 2016-06-22 |
| JP6148738B2 (ja) | 2017-06-14 |
| US20160281064A1 (en) | 2016-09-29 |
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