WO2019177138A1 - 異常tdp-43を分解除去する抗体断片 - Google Patents
異常tdp-43を分解除去する抗体断片 Download PDFInfo
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Definitions
- the present invention relates to a modified antibody fragment that decomposes and removes TDP-43 that has caused structural abnormality. Furthermore, the present invention relates to a nucleic acid encoding the modified antibody fragment, an expression vector containing the nucleic acid, a gene therapeutic agent containing the nucleic acid, and a method for treating a disease in which aggregates of TDP-43 accumulate using the nucleic acid. .
- TDP-43 a nuclear protein, is the causative protein of amyotrophic lateral sclerosis (ALS), the most refractory neurological disease, and frontotemporal dementia (FTD), which has the second prevalence in dementia TAR DNA-binding protein of 43kDa) has been identified.
- ALS amyotrophic lateral sclerosis
- FTD frontotemporal dementia
- TDP-43 escapes from the nucleus in FTD and ALS and forms pathological aggregates in the cytoplasm, but the mechanism is unknown.
- TDP-43 has been found to be found at a very high rate in ubiquitinated inclusion bodies in FTD and ALS.
- diseases that exhibit abnormal pathological findings of TDP-43 are positioned as a group of diseases called TDP-43 proteinopathy, and various reports have raised the possibility that TDP-43 dysfunction is the essence of ALS pathology.
- TDP-43 may lead to overcoming ALS, and energetic research is underway all over the world.
- the clearest and most important pathological findings of the TDP-43 proteinopathy are reduced nuclear staining of TDP-43 and inclusion body formation in the cytoplasm. Elucidation of the function of this ectopic localization is indispensable for understanding the pathology of ALS.
- TDP-43 has two RNA binding regions (RRM), a C-terminal glycine-rich region, a nuclear translocation signal (NLS), and a nuclear export signal (NES).
- RRM RNA binding regions
- NLS nuclear translocation signal
- NES nuclear export signal
- TDP-43 is constitutively expressed in all somatic cells and is mainly localized in the nucleus.
- FTD and ALS since normal tissues are localized in the nucleus without exception, the influence of ectopic localization of TDP-43 on the pathological state has attracted attention.
- TDP-43 positive cell inclusion bodies contain highly fragmented and phosphorylated TDP-43.
- TDP-43 has ectopic localization as Perry syndrome, low-grade glioma, Alzheimer's disease, Huntington's disease, Pick's disease, Parkinson's disease, Lewy body disease, cerebral cortex basal Nuclear degeneration, inclusion body myositis, B cell lymphoma (stage M), etc. have been reported.
- the present inventors proceeded with research from the viewpoint of (1) how TDP-43 converts from a normal structure unrelated to disease to a pathogenic structure having toxicity, and (2) how to capture abnormal structures.
- the cysteine residue of RRM1 of TDP-43 is important for normal structure maintenance, and that abnormal agglutination observed in the brain of ALS and FTD can be reproduced in vitro by the abnormal modification (patent) Reference 1).
- TDP-43 aggregates accumulate by identifying sequences that are exposed to the outside in TDP-43 molecules that have abnormal aggregation and abnormal localization in the cytoplasm. It has been reported that the risk of disease onset can be predicted (Patent Document 2).
- Patent Documents 3 and 4 antibodies that detect TDP-43 have been reported. However, aggregates recognized by these antibodies are in an advanced stage, and as a therapeutic target, an early structural change occurs. Is required.
- An object of the present invention is to provide a modified antibody fragment capable of decomposing and removing misfolded TDP-43. Furthermore, the present invention provides a nucleic acid encoding the modified antibody fragment, an expression vector containing the nucleic acid, a gene therapeutic agent containing the nucleic acid, and a method for treating a disease in which aggregates of TDP-43 accumulate using the nucleic acid. The purpose is to provide.
- the present inventor added a chaperone-mediated autophagy (CMA) translocation signal to scFv having binding properties to misfolded TDP-43, and obtained scFv. It was found that by using it as an intracellular antibody, cell death can be suppressed in vitro, and misfolded TDP-43 can be decomposed and removed even in vivo.
- CMA chaperone-mediated autophagy
- the present invention has been completed based on these findings, and has been completed.
- the following modified antibody fragments, nucleic acids, expression vectors, gene therapeutic agents, and aggregates of TDP-43 using the nucleic acids accumulate.
- the present invention provides a method for treating a disease.
- a modified antibody fragment composed of an antibody fragment having a binding property to misfolded TDP-43 and a chaperone-mediated autophagy transition signal peptide,
- the antibody fragment may have 3 or less amino acid substitutions, heavy chain CDR1 consisting of the amino acid sequence of GFNIKDYY (SEQ ID NO: 1), heavy chain CDR2 consisting of the amino acid sequence of IDPEDGET (SEQ ID NO: 2), and TIIYYYGSRYVDY (sequence)
- a heavy chain variable region comprising the heavy chain CDR3 consisting of the amino acid sequence of No. 3) and / or a light chain CDR1 consisting of the amino acid sequence of SSISSSY (SEQ ID No.
- the antibody fragment is scFv, VH or VL; Modified antibody fragment.
- Item 2. The modified antibody fragment according to Item 1, wherein the antibody fragment is scFv.
- Item 3. The modified antibody fragment according to Item 1 or 2, wherein the antibody fragment is a humanized antibody fragment.
- Item 4. A nucleic acid encoding the modified antibody fragment according to any one of Items 1 to 3. Item 5. An expression vector comprising the nucleic acid according to Item 4.
- Item 6. Item 5. A gene therapy agent comprising the nucleic acid according to Item 4.
- Item 7. The therapeutic agent according to Item 6, which is used for treating a disease in which an aggregate of TDP-43 accumulates.
- Item 8. The therapeutic agent according to Item 7, wherein the disease in which the aggregate of TDP-43 accumulates is amyotrophic lateral sclerosis, frontotemporal dementia, or Perry syndrome.
- Item 9. Item 7. The therapeutic agent according to Item 6, which is used for inducing a heat shock protein.
- Item 10. Item 10. The therapeutic agent according to Item 9, wherein the heat shock protein is Hsp70.
- a method for treating a disease in which an aggregate of TDP-43 accumulates comprising a step of administering an effective amount of the nucleic acid according to Item 4 to a mammal.
- Item 12. The method according to Item 11, wherein the disease in which the aggregate of TDP-43 accumulates is amyotrophic lateral sclerosis, frontotemporal dementia, or Perry syndrome.
- the modified antibody fragment of the present invention can be used as an intracellular antibody to decompose and remove misfolded TDP-43 and suppress neuronal cell death. Therefore, the therapeutic effect of the disease which the aggregate of TDP-43 accumulates can be expected.
- the modified antibody fragment of the present invention can induce heat shock protein, and as a result, an effect of loosening aggregates of TDP-43 can be obtained, and degradation by autophagy can be further promoted. .
- FIG. 4 shows that scFv-CMA induces heat shock chaperone Hsp70 in the presence of misfolded TDP-43.
- mRNA amount of Hsp70 n 3 Data is mean ⁇ SD *** p ⁇ 0.005, **** p ⁇ 0.001, compared to vector control group.
- the test is based on Dunnett's two-way analysis of variance. N.S. indicates no significant difference.
- Right Protein content of Hsp70. Data are average ⁇ SD from three independent experiments. Each data was normalized with actin. ** p ⁇ 0.01, compared to the vector control group. The test is based on Dunnett's two-way analysis of variance. N.S. indicates no significant difference.
- FIG. 4 shows that Hsp70 solubilizes misfolded aggregates of TDP-43. Average ⁇ SD From three independent experiments. Each data was normalized with actin. * P ⁇ 0.05, compared to the vector control group. The test is based on Dunnett's two-way analysis of variance. N.S. indicates no significant difference.
- the test is based on an unpaired t test. It is a figure which shows that the wild type TDP-43 of the fetal brain introduce
- gene includes double-stranded DNA, single-stranded DNA (sense strand or antisense strand), and fragments thereof unless otherwise specified.
- gene refers to a regulatory region, a coding region, an exon, and an intron without distinction unless otherwise specified.
- nucleic acid “nucleotide” and “polynucleotide” are synonymous and include both DNA and RNA, and may be double-stranded or single-stranded.
- the RefSeq ID shown below is registered on the NCBI website.
- the modified antibody fragment of the present invention is a modified antibody fragment composed of an antibody fragment having binding ability to misfolded TDP-43 and a chaperone-mediated autophagy transition signal peptide
- the antibody fragment may have 3 or less amino acid substitutions, heavy chain CDR1 consisting of the amino acid sequence of GFNIKDYY (SEQ ID NO: 1), heavy chain CDR2 consisting of the amino acid sequence of IDPEDGET (SEQ ID NO: 2), and TIIYYYGSRYVDY (sequence)
- a heavy chain variable region comprising the heavy chain CDR3 consisting of the amino acid sequence of No. 3) and / or a light chain CDR1 consisting of the amino acid sequence of SSISSSY (SEQ ID No.
- an amino acid of RTS A light chain variable region comprising a light chain CDR2 comprising the sequence and a light chain CDR3 comprising the amino acid sequence of QQGSSIPLT (SEQ ID NO: 5), wherein the antibody fragment is scFv, VH or VL.
- TDP-43 in the present invention is usually derived from animals, preferably derived from mammals, and particularly preferably derived from humans.
- Human-derived TDP-43 is a protein consisting of 414 amino acids, and its primary structure has high homology with the heteroribonucleoprotein (hnRNA) family.
- TDP-43 has two highly conserved RNA recognition motifs (RRM1, RRM2) and contains a glycine-rich region on the C-terminal side, which binds to members of the hnRNP family.
- the amino acid sequence of human-derived TDP-43 protein is registered as RefSeq Accession No. NP_031401, and is shown in SEQ ID NO: 6. Further, a gene encoding TDP-43 protein derived from human is registered as RefSeq Accession No.NM_007375, and its base sequence is shown in SEQ ID NO: 7.
- TDP-43 in the present invention is a protein having the amino acid sequence represented by SEQ ID NO: 6 as long as it has a biological activity equivalent to that of the protein comprising the amino acid sequence represented by SEQ ID NO: 6. It may be a body.
- TDP-43 is TDP-43 folded into a structure different from the natural structure, particularly TDP-43 having a pathogenic structure associated with TDP-43 proteinopathy.
- the CDR (complementarity determining region) contained in the antibody fragment of the present invention is characterized by having binding properties to misfolded TDP-43. It is desirable that the antibody fragment of the present invention specifically binds to misfolded TDP-43 and does not bind to TDP-43 having a normal structure.
- the antibody fragment of the present invention is preferably a heavy chain CDR1 consisting of the amino acid sequence of GFNIKDYY (SEQ ID NO: 1) and a heavy chain CDR2 consisting of the amino acid sequence of IDPEDGET (SEQ ID NO: 2), which may have 3 or less amino acid substitutions.
- a heavy chain variable region comprising the heavy chain CDR3 consisting of the amino acid sequence of TIIYYYGSRYVDYV (SEQ ID NO: 3), and a light chain CDR1 consisting of the amino acid sequence of SSISSSY (SEQ ID NO: 4), which may be substituted with 3 or less amino acids, It includes a light chain variable region comprising a light chain CDR2 comprising the amino acid sequence of RTS and a light chain CDR3 comprising the amino acid sequence of QQGSSIPLTIP (SEQ ID NO: 5).
- the heavy chain CDR2 used in the present invention contains a PEST sequence, the heavy chain CDR2 has the property of being rapidly degraded in the absence of misfolded TDP-43.
- the amino acid substitution is performed so that the binding of the antibody fragment to misfolded TDP-43 is maintained.
- the phrase “may be substituted with 3 or less amino acids” means that a total of 3 or less amino acids may be substituted in the heavy chain variable region or the light chain variable region. It is desirable to be done.
- the number of amino acid substitutions is preferably 2 or less, more preferably 1 or less, and even more preferably 0.
- the number of amino acid substitutions is preferably 2 or less, more preferably 1 or less, and even more preferably 0.
- ScFv is an antibody fragment in which an Fv composed of a heavy chain variable region and a light chain variable region is connected by an appropriate peptide linker.
- VH and VL mean an antibody fragment consisting only of the heavy chain variable region and an antibody fragment consisting only of the light chain variable region, respectively.
- the antibody fragment of the present invention is preferably scFv.
- scFv those in which VH and VL are combined in any order can be used.
- the sequence of the framework region (FR region) in the variable region of the antibody fragment of the present invention is not particularly limited as long as the antibody fragment has a binding property to misfolded TDP-43, and any sequence can be used.
- the antibody fragment of the present invention is preferably a humanized antibody fragment whose framework region is derived from human. Such a humanized antibody can be prepared by a known method.
- Chaperone-mediated autophagy (CMA) translocation signal peptide is a signal peptide that induces translocation to CMA, and CMA is a protein recognized by chaperone and the complex is considered to be a receptor on lysosome and LAMP2A It is a pathway that is transferred to the inside of lysosomes through the binding of and is degraded.
- CMA Chaperone-mediated autophagy
- the chaperone-mediated autophagy (CMA) transfer signal peptide can be used without particular limitation as long as it is a signal peptide that can induce transfer to CMA, and examples include a peptide containing the amino acid sequence KFREQ (SEQ ID NO: 8).
- the antibody fragment and the chaperone-mediated autophagy transition signal peptide may be bound in any order as long as the effect of the present invention is obtained. These may be directly bonded, or any amino acid sequence may be present between them. In addition to these antibody fragments and peptides, other proteins and peptides may be bound to the modified antibody fragments of the present invention.
- the nucleic acid of the present invention encodes the modified antibody fragment.
- the nucleic acid can be prepared by a conventional method such as biochemical cleavage / recombination using each antibody fragment constituting the modified antibody fragment and the nucleic acid encoding the peptide.
- Nucleic acids encoding antibody fragments and chaperone-mediated autophagy transition signal peptides can be prepared by conventional methods such as PCR, chemical synthesis, biochemical cleavage / recombination.
- the expression vector of the present invention is characterized by containing the above-mentioned nucleic acid.
- the expression vector is not particularly limited, and known expression vectors can be widely used.
- An appropriate expression vector may be appropriately selected in consideration of the type of cell into which the nucleic acid is introduced.
- the expression vector can contain a promoter, an enhancer, a terminator, a polyadenylation signal, a selection marker, an origin of replication, and the like.
- any of a vector that replicates autonomously and a vector that is integrated into the genome of the host cell when introduced into the host cell and replicated together with the integrated chromosome can be used.
- the nucleic acid can be inserted into an expression vector by a known method.
- the gene therapy agent of the present invention is characterized by containing the above nucleic acid.
- the modified antibody fragment of the present invention can be used as an intracellular antibody (intrabody).
- Non-viral vectors include liposomes, polymeric micelles, cationic carriers and the like.
- examples of viral vectors include retroviruses, adenoviruses, adeno-associated viruses, Sendai viruses, Bornaviruses, and the like.
- Vectors containing the above nucleic acids are introduced into detoxified viruses, and cells or tissues are infected with these viruses.
- a nucleic acid can be introduced into a cell or tissue.
- the gene therapy agent of the present invention can optionally contain biologically acceptable carriers, excipients and the like depending on the form of use.
- the gene therapy agent of the present invention can be produced according to conventional methods. For example, orally as tablets, capsules, elixirs, microcapsules, etc. with sugar coating or enteric coating as necessary, or as external agents such as ointments and plasters, transdermally as sprays, inhalants, etc. It can be used nasally or tracheally, parenterally in the form of injections such as sterile solutions and suspensions with water or other pharmaceutically acceptable fluids.
- the amount of nucleic acid as an active ingredient in the gene therapy agent of the present invention is appropriately selected depending on the dosage form, administration route, etc., and is usually about 0.0001 to 90% by mass, preferably about 0.001 to 70% by mass, based on the total amount of the preparation. It is.
- the gene therapy agent of the present invention is administered to mammals including humans.
- the administration method of the gene therapy agent of the present invention is not particularly limited, and can be performed by methods known to those skilled in the art, such as intraarterial injection, intravenous injection, and subcutaneous injection.
- the dosage of the gene therapy agent of the present invention can be appropriately determined finally based on the judgment of a doctor in consideration of the type of dosage form, administration method, patient age and weight, patient symptoms, and the like.
- the gene therapy agent of the present invention can be used for the treatment of diseases in which aggregates of TDP-43 accumulate, because the modified antibody fragment can be expressed in cells to decompose and remove misfolded TDP-43.
- the disease in which aggregates of TDP-43 accumulate is not particularly limited.
- amyotrophic lateral sclerosis, frontotemporal dementia, Perry syndrome low-grade glioma, Alzheimer's disease, Huntington's disease, pick Disease, Parkinson's disease, Lewy body disease, basal ganglia degeneration, inclusion body myositis, B cell lymphoma (M stage) and the like.
- the gene therapy agent of the present invention can be suitably used for amyotrophic lateral sclerosis, frontotemporal dementia, and Perry syndrome.
- the gene therapy agent of the present invention can also be used to induce heat shock proteins.
- the heat shock protein acts to loosen TDP-43 aggregates and promote degradation.
- the heat shock protein one induced in the presence of a misfolded protein is preferable, and examples thereof include Hsp70, Hsp25, Hsp104, Hsp110, and the like. Of these, Hsp70 is preferred.
- the modified antibody fragment of the present invention is used as an intracellular antibody, it has no effect on wild-type TDP-43, and can degrade and remove misfolded TDP-43 and suppress neuronal cell death. It has a therapeutic effect on diseases in which aggregates of TDP-43 accumulate.
- the modified antibody fragment of the present invention can also induce heat shock proteins, and as a result, an effect of loosening the aggregate of TDP-43 can be obtained, which can further promote autophagy degradation. .
- cDNA is prepared from messenger RNA and oligo dT primer using messenger RNA and template using commercially available mRNA extraction kit (Invitrogen, Carlsbad, CA, USA) and cDNA synthesis kit (SuperScript III Reverse Transcriptase (Invitrogen)), respectively. did.
- 5′-GAC TCG AGT CGA CAT CGA TTT TTT TTT TTT TTT TT-3 ′ SEQ ID NO: 11
- 5′-CTC ATT CCT GTT GAA GCT CTT GAC AAT GGG-3 ′ SEQ ID NO: 12
- VH and VL are linked by a linker sequence (5'-tgaaccgcctccaccTATTTCCAACTTTGTCCCC-3 '(SEQ ID NO: 14), 5'-ggcggtggcggatctGAGGTTCAGCTGCAGCAGT-3' (SEQ ID NO: 15)) in which three GGGGS (SEQ ID NO: 13) are connected in tandem.
- chaperone-mediated autophagy signal amino acid sequence KFREQ (5'-CGAGCATGCATCTAGAAAATTCAGAGAACAATGATCTAGAGGGCCCTATT-3 '(SEQ ID NO: 16), 5'-AATAGGGCCCTCTAGATCATTGTTCTCTGAATTTTCTAGATGCATGCTCG-3' (SEQ ID NO: 17) (SEQ ID NO: 17) 5′-GCCCAGGCCCGAATTCGCCATGgAAATTGTGCTCACCCAGT-3 ′ (SEQ ID NO: 18), 5′-TAGATGCATGCTCGAGTTATTGTTCTCTGAATTTCAGGTCCTCCTCTGAGATC-3 ′ (SEQ ID NO: 19)).
- VH-VL and VL-VH were subcloned into pcDNA3 vector (Invitrogen).
- VH and VL encoded by the cloned DNA are shown below. Underlined portions are CDR1, CDR2, and CDR3 in this order.
- VH includes a PEST sequence (RIDPEDGETK (SEQ ID NO: 20)) in the CDR2 portion.
- the base sequences corresponding to the following amino acid sequences of VH and VL are also shown below.
- VH (amino acid sequence) EVQLQQSGAELVKPGASVKLSCTAS GFNIKDYY MHWVKQRTEQGLEWIGR IDPEDGET KYAPKFQGKATITADTSSNTAYLQLSSLTSEDTAVYYC TIIYYYGSRYVDY WGQGTTLTVS (SEQ ID NO: 21) VL (amino acid sequence) EIVLTQSPTTMAASPGEKITITCSAS SSISSSY LHWYQQKPGFSPKLLIY RTS NLASGVPARFSGSGSGTSYSLTIGTMEAEDVATYYC QQGSSIPLT FGSGTKLEI (SEQ ID NO: 22) VH (base sequence) GAGGTTCAGCTGCAGCAGTCTGGGGCAGAGCTTGTGAAGCCAGGGGCCTCAGTCAAGTTGTCCTGCACAGCTTCTGGCTTCAACATTAAAGACTACTATATGCACTGGGTGAAGCAGAGGACTGAACAGGGCCTGGAGTGGATTGG
- HEK293A cells and Neuro2a cells were obtained by using Dulbecco's modified Eagle medium (DMEM; Nacalai Tesque, Inc.) containing 10% fetal bovine serum (FBS) and penicillin / streptomycin (100-fold dilution) at 37 ° C., 5% CO 2 incubator. Incubated inside. Plasmid transfection was performed using FuGene HD (Roche) according to the package insert.
- DMEM Dulbecco's modified Eagle medium
- FBS fetal bovine serum
- streptomycin 100-fold dilution
- the lysate was adjusted to 2% SDS and 100 mM dithiothreitol (DTT).
- Western blotting involves adding a sample to a commercially available polyacrylamide gel (Wako), electrophoresis, transferring to a PVDF membrane, and then reacting with a primary antibody followed by a secondary antibody labeled with peroxidase (Jackson immunolaboratory). Color was developed using a luminescence kit (ECL; Thermo-Fisher Scientific or Nacalai Tesque).
- TDP-43 labeled with FLAG tag TDP-43-FLAG
- scFv-Myc scFv labeled with Myc tag
- ScFv protein half-life and degradation inhibition assay ScFv (scFv-Myc, scFv-Myc-CL1, scFv-Myc-CMA) with Myc tag were transfected into cultured cells (HEK293A), and 48 hours later, cycloheximide (CHX) was administered at a concentration of 100 ⁇ g / ml. Ceased new protein synthesis. Immediately thereafter, proteasome inhibitor (lactacystine) and lysosome inhibitor (bafilomycin) were administered at concentrations of 10 ⁇ M and 0.1 ⁇ M, respectively, and the cells were collected after 10 and 24 hours, including no-drug control, and 2 mercaptoethanol. It was denatured by dissolving in 2% SDS sample buffer containing Thereafter, according to the Western blotting method described above, detection was performed using an anti-Myc antibody, and the band was quantified by densitometry.
- TDP-43-Halo TDP-43 labeled with a Halo tag (Promega) and MyF-labeled scFv (scFv-Myc) were co-expressed by the method described above. After labeling TDP-43-Halo expressed 48 hours later with 1 ⁇ M diAcFAM ligand (Promega) for 15 minutes, the culture medium was washed and the culture was continued in the normal medium.
- TDP-43-GFP time-lapse video microscope analysis
- scFv-CMA time-lapse fluorescence microscope
- CDNA was prepared from HEK293A cells transfected by the above method using a commercially available RNA extraction kit (Invitrogen) and cDNA preparation kit (Invitrogen). PCR was performed with a real-time PCR detection system (Bio-Rad) using the SYBER Green quantification kit (Toyobo) according to the protocol of the instruction manual, and quantitative analysis was performed using the attached software.
- the primer sequences used are as follows.
- HSP70 5'-CAA GAT CAC CAT CAC CAA CG-3 '(SEQ ID NO: 25) and 5'-TCG TCC TCC GCT TTG TAC TT-3' (SEQ ID NO: 26); GAPDH, 5'-GCA CCG TCA AGG CTG AGA AC-3 '(SEQ ID NO: 27) and 5'-TGG TGG TGA AGA CGC CAG TGG A-3' (SEQ ID NO: 28)
- TDP-43-GFP or GFP Intrauterine electroporation
- scFV-Myc TDP-43-GFP or GFP
- mCherry TDP-43-GFP or scFV-Myc
- mCherry dissolved in clean PBS in the fetal side ventricle while holding the uterus
- expression plasmids pCAG-TDP-43-GFP, pCAG-scFv-Myc, pCAG-mCherry
- the outside of the brain was lightly sandwiched with a dish electrode (CUY650P5; Nepagene), the cathode was aligned with the plasmid injection side, and electrical stimulation was intermittently applied 5 times (31 V, 50 ms, at 950-millisecond interval). Thereafter, the uterus was returned to the mother's abdominal cavity and sutured, and then pregnancy was continued.
- a dish electrode (CUY650P5; Nepagene)
- electrical stimulation was intermittently applied 5 times (31 V, 50 ms, at 950-millisecond interval).
- the OCT compound was removed by washing with 0.1 M PBS-T buffer containing 1% Triton-X100, and then PBS-T buffer containing 3% bovine serum albumin (Nacalai Tesque) was added for blocking. Thereafter, the mixture was reacted with the primary antibody at 4 ° C. for 16 hours, washed, and then reacted with a fluorescently labeled secondary antibody (Fluo antibody, Invitrogen) at 22 ° C. for 1 hour. After washing, 4′-6 diamidino-2-phenylindole ( Cover glass treatment was performed using a mounting agent (Vector) containing DAPI). The sections were observed and photographed using a confocal laser microscope (FV1000-D IX81, Olympus Corporation).
- Test Example 1 In vitro test scFv-Myc and TDP-43 (wild type, nuclear translocation signal mutant type (mNLS), nuclear aggregate formation type (C173S / C175S), cytoplasmic aggregate formation type (mNLS-C173S / C175S) ) Were expressed in cultured cells (HEK293A), and lysates were analyzed by sandwich ELISA, and the binding properties of TDP-43 and scFv were quantified. The result is shown in FIG.
- the cultured cells are expressed with scFv1 (untagged, CLI1 tag, CMA tag), cycloheximide (100 ⁇ g / ml) is administered to stop protein synthesis, cells are recovered 24 hours later, and the remaining scFv-Myc is analyzed by Western blotting. Quantified. The results are shown on the right side of FIG.
- TDP-43 wild type and cytoplasmic aggregate-forming type (mNLS-C173S / C175S)
- Halo tag is expressed in cultured cells, and after 24 hours, fluorescent Halo ligand is administered, and cells after 0, 12, 24 hours Were collected, developed on SDS-PAGE, analyzed with a fluorescence imager, and quantified. The result is shown in FIG.
- TDP-43-EGFPT cytoplasmic aggregate formation type
- scFv cytoplasmic aggregate formation type
- scFv cytoplasmic aggregate formation type
- Test Example 2 Induced cultured cells of Hsp70 (HEK293A) and TDP-43-FLAG (wild type and cytoplasmic aggregate forming type (mNLS-C173S / C175S)) or vector, plus scFv-Myc (no signal, CL1, CMA Signal) or vector was co-expressed, and cells were collected 48 hours later.
- the left side of FIG. 5 shows the results of cDNA recovery from the cells and analysis of Hsp70 mRNA by real-time PCR assay.
- FIG. 5 shows the results of detecting Hsp70 in the cell lysate by Western blotting and quantifying the amount of protein by densitometry.
- HEK293A Cultured cells (HEK293A) were overexpressed with TDP-43-FLAG and a vector, Hsp90 or Hsp70, solubilized in a surfactant (1% TritonX100), and separated into a supernatant and a precipitate. Each was analyzed by Western blotting using Hsp70 antibody, and the detected bands were quantified by densitometry. Data obtained by dividing insolubilized TDP-43 by solubilized TDP-43 is shown in FIG.
- Test Example 3 In vivo test TDP-43-GFP and scFv-CMA were introduced into the ventricular ventricle of 13.5 days of gestation (E13.5), and the pregnancy was continued. Brain sections were prepared and immunostained with anti-GFP antibody, anti-ubiquitin antibody, and anti-phosphorylated TDP-43 antibody. Misfolded TDP-43 is mNLS-TDP-43 C173S / C175S. The results are shown in FIG.
- TDP-43-EGFP and scFv-Myc-CMA were introduced into the E13.5 fetal brain to continue pregnancy, and the fetal brain was fixed at E16 to prepare a brain section, anti-GFP antibody, Immunostaining was performed with anti-Myc antibody. The results are shown in FIG.
- TDP-43-EGFP, scFv-Myc-CMA, and mCherry were introduced into the E13.5 fetal brain to continue pregnancy, and the fetal brain was fixed at E16 to prepare a brain section, anti-GFP Immunostaining was performed with antibodies, anti-Myc antibodies, and anti-mCherry antibodies, and aggregates were quantified by fluorescence intensity and size.
- the result of misfolded TDP-43 is shown in FIG. 9, and the result of wild type TDP-43 is shown in FIG. In mouse brain expressing wild type TDP-43, scFv-Myc-CMA did not affect the expression level of TDP-43.
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Abstract
Description
該抗体断片が、3以下のアミノ酸置換をしてもよい、GFNIKDYY (配列番号1)のアミノ酸配列からなる重鎖CDR1、IDPEDGET (配列番号2)のアミノ酸配列からなる重鎖CDR2、及びTIIYYYGSRYVDY (配列番号3)のアミノ酸配列からなる重鎖CDR3を含む重鎖可変領域、並びに/又は
3以下のアミノ酸置換をしてもよい、SSISSSY (配列番号4)のアミノ酸配列からなる軽鎖CDR1、RTSのアミノ酸配列からなる軽鎖CDR2、及びQQGSSIPLT (配列番号5)のアミノ酸配列からなる軽鎖CDR3を含む軽鎖可変領域を含み、
該抗体断片が、scFv、VH又はVLである、
修飾抗体断片。
項2.前記抗体断片がscFvである、項1に記載の修飾抗体断片。
項3.前記抗体断片がヒト化抗体断片である、項1又は2に記載の修飾抗体断片。
項4.項1~3のいずれか一項に記載の修飾抗体断片をコードする核酸。
項5.項4に記載の核酸を含む発現ベクター。
項6.項4に記載の核酸を含む遺伝子治療剤。
項7.TDP-43の凝集体が蓄積する疾患の治療用である、項6に記載の治療剤。
項8.前記TDP-43の凝集体が蓄積する疾患が筋萎縮性側索硬化症、前頭側頭型認知症、又はPerry症候群である、項7に記載の治療剤。
項9.熱ショックタンパク質を誘導させるために用いられる、項6に記載の治療剤。
項10.前記熱ショックタンパク質がHsp70である、項9に記載の治療剤。
項11.項4に記載の核酸の有効量を哺乳動物に投与する工程を含む、TDP-43の凝集体が蓄積する疾患の治療方法。
項12.前記TDP-43の凝集体が蓄積する疾患が筋萎縮性側索硬化症、前頭側頭型認知症、又はPerry症候群である、項11に記載の方法。
該抗体断片が、3以下のアミノ酸置換をしてもよい、GFNIKDYY (配列番号1)のアミノ酸配列からなる重鎖CDR1、IDPEDGET (配列番号2)のアミノ酸配列からなる重鎖CDR2、及びTIIYYYGSRYVDY (配列番号3)のアミノ酸配列からなる重鎖CDR3を含む重鎖可変領域、並びに/又は
3以下のアミノ酸置換をしてもよい、SSISSSY (配列番号4)のアミノ酸配列からなる軽鎖CDR1、RTSのアミノ酸配列からなる軽鎖CDR2、及びQQGSSIPLT (配列番号5)のアミノ酸配列からなる軽鎖CDR3を含む軽鎖可変領域を含み、該抗体断片が、scFv、VH又はVLであることを特徴とする。
以下の試験例における材料、試薬及び実験方法は特に記載しない限り次の通りとした。
マウスハイブリドーマより、市販のmRNA抽出キット(Invitrogen, Carlsbad, CA, USA)及びcDNA合成キット(SuperScript III Reverse Transcriptase (Invitrogen))を用いて、各々メッセンジャーRNA及びそれを鋳型としてオリゴdTプライマーによりcDNAを作製した。プライマーペア、5'-GAC TCG AGT CGA CAT CGA TTT TTT TTT TTT TTT TT-3' (配列番号9)と5'-CTC AAT TTT CTT GTC CAC CTT GGT GC-3' (配列番号10)とをVH cDNA用に、5'-GAC TCG AGT CGA CAT CGA TTT TTT TTT TTT TTT TT-3' (配列番号11)と5'-CTC ATT CCT GTT GAA GCT CTT GAC AAT GGG-3' (配列番号12)とをVL cDNA用に、常法のPCR増幅を経てクローニングした。
VH (アミノ酸配列)
EVQLQQSGAELVKPGASVKLSCTASGFNIKDYYMHWVKQRTEQGLEWIGRIDPEDGETKYAPKFQGKATITADTSSNTAYLQLSSLTSEDTAVYYCTIIYYYGSRYVDYWGQGTTLTVS (配列番号21)
VL (アミノ酸配列)
EIVLTQSPTTMAASPGEKITITCSASSSISSSYLHWYQQKPGFSPKLLIYRTSNLASGVPARFSGSGSGTSYSLTIGTMEAEDVATYYCQQGSSIPLTFGSGTKLEI (配列番号22)
VH (塩基配列)
GAGGTTCAGCTGCAGCAGTCTGGGGCAGAGCTTGTGAAGCCAGGGGCCTCAGTCAAGTTGTCCTGCACAGCTTCTGGCTTCAACATTAAAGACTACTATATGCACTGGGTGAAGCAGAGGACTGAACAGGGCCTGGAGTGGATTGGAAGGATTGATCCTGAGGATGGTGAAACTAAATATGCCCCGAAATTCCAGGGCAAGGCCACTATTACAGCAGACACATCCTCCAACACAGCCTACCTGCAGCTCAGCAGCCTGACATCTGAGGACACTGCCGTCTATTACTGTACTATCATTTATTACTACGGTAGTCGCTACGTTGACTACTGGGGCCAAGGCACCACTCTCACAGTCTCC (配列番号23)
VL (塩基配列)
GAAATTGTGCTCACCCAGTCTCCAACCACCATGGCTGCATCTCCCGGGGAGAAGATCACTATCACCTGCAGTGCCAGCTCAAGTATAAGTTCCAGTTACTTGCATTGGTATCAGCAGAAGCCAGGATTCTCCCCTAAACTCTTGATTTATAGGACATCCAATCTGGCTTCTGGAGTCCCAGCTCGCTTCAGTGGCAGTGGGTCTGGGACCTCTTACTCTCTCACAATTGGCACCATGGAGGCTGAAGATGTTGCCACTTACTACTGCCAGCAGGGTAGTAGTATACCACTCACGTTCGGCTCGGGGACAAAGTTGGAAATA (配列番号24)
HEK293A細胞及びNeuro2a細胞は10%ウシ胎児血清(FBS)及びペニシリン・ストレプトマイシン(100倍希釈)を含むDulbecco変法Eagle培地(DMEM;ナカライテスク株式会社)を用いて、37℃、5%CO2インキュベーター内で培養した。プラスミドトランスフェクションはFuGene HD (Roche)を用い、添付文書に従って行った。
HEK293A細胞をプロテアーゼ阻害剤(Roche)を含むRIPAバッファー(20 mM HEPES-KOH [pH 7.4], 125 mM NaCl, 2 mM EDTA, 1% Nonidet-P40, 1% sodium-deoxycholate)で溶解したライセートを作製した。
scFvと抗原の細胞内での結合性を定量するためにサンドイッチELISAを行った。FLAGタグ標識をしたTDP-43 (TDP-43-FLAG)とMycタグ標識をしたscFv (scFv-Myc)とをHEK293A細胞に上記の方法を用いてトランスフェクションさせ、48時間後に細胞をRIPAバッファーに溶解させてライセートを作製した。別途1000分の1に希釈した抗FLAG抗体(M2 Sigma)をコートしたELISAプレート(Nunc)にライセートを加え22℃で1時間反応させた後、500分の1に希釈したウサギ由来の抗Myc抗体(Cell signaling社)と4℃、16時間反応させた。
MycタグをつけたscFv (scFv-Myc、scFv-Myc-CL1、scFv-Myc-CMA)を培養細胞(HEK293A)にトランスフェクションし、48時間後にシクロヘキシミド(CHX)を100μg/mlの濃度で投与し、新たなタンパク質合成を止めた。その直後、プロテアソーム阻害薬(ラクタシスチン)、ライソゾーム阻害薬(バフィロマイシン)を各々10μM、0.1μMの濃度で投与し、無投薬のコントロールを含め10、24時間後に細胞を回収し、2メルカプトエタノールを含む2% SDSサンプルバッファーに溶解して変性させた。その後は上記のウェスタンブロット法に従って、抗Myc抗体を用いて検出し、バンドをデンシトメトリー法によって定量化した。
Haloタグ(Promega)で標識させたTDP-43 (TDP-43-Halo)とMyc標識させたscFv (scFv-Myc)とを上記の方法で共発現させた。48時間後に発現したTDP-43-Haloを1μMのdiAcFAMリガンド(Promega)を15分間投与してラベルした後、培養培地を洗浄して、通常の培地で培養を続けた。diAcFAMリガンド投与直後、12時間後、24時間後に細胞を2% SDSサンプルバッファーにて回収し、5-20%ポリアクリルアミドゲル電気泳動を行った後、ゲルを蛍光撮影機(LAS-3000; FUJIFILM)にて撮像した。その後、ゲルをウェスタンブロッティングのためPVDFメンブレンに転写し、解析を行った。
GFP標識をしたTDP-43 (TDP-43-GFP)とscFv-CMAとをHEK293A細胞に上記の方法を用いて共発現させた。24時間後に培養培地内に細胞の核を染色するHoechst 33342 (ナカライテスク株式会社)を投与し、タイムラプス蛍光顕微鏡(BZX-710; Keyence, Osaka)にて30分おきに付属のソフトウェアを用いて48時間連続撮影を行った。撮像場所は初回の撮影前にランダムに4箇所決め、その後は同じ場所を撮影した。
96マルチウェル上のNeuro2a細胞にFLAGタグ標識をしたTDP-43とMycタグ標識をしたscFvとを上記の方法で共発現させた。48時間後に市販の生細胞・死細胞定量キット(MultiTox-Fluor multiplex cytotoxicity assay; Promega)のglycyl-phenylalanylamino fluorocoumarin (GF-AFC)及びbisalanyl-alanyl-phenylalanyl-rhodamine 110 (bis-AAF-R110)を同時に投与して2時間インキュベーター内で反応させた。その後、蛍光マルチプレートリーダー(Perkin Elmer)を用いて生細胞を蛍光度400/505 nm、死細胞を485/520 nmで測定した。
上記の方法でトランスフェクションをしたHEK293A細胞から市販のRNA抽出キット(Invitrogen)及びcDNA作製キット(Invitrogen)を用いてcDNAを作製した。SYBER Green定量キット(Toyobo)を取扱説明書のプロトコールに従い、リアルテイムPCR検出システム(Bio-Rad)にてPCRを行い、付属のソフトウェアを用いて定量解析を行った。用いたプライマー配列は以下のとおりである。HSP70, 5'-CAA GAT CAC CAT CAC CAA CG-3' (配列番号25)及び5'-TCG TCC TCC GCT TTG TAC TT-3' (配列番号26); GAPDH, 5'-GCA CCG TCA AGG CTG AGA AC-3' (配列番号27)及び5'-TGG TGG TGA AGA CGC CAG TGG A-3' (配列番号28)
妊娠13.5日のSJR妊娠マウスよりイソフルレン吸入麻酔下で子宮を取り出し、子宮を保持しながら目視下に胎児側脳室に清潔なPBSに溶解したTDP-43-GFPあるいはGFP、scFV-Myc、mCherry (タカラバイオ株式会社)の発現プラスミド(pCAG-TDP-43-GFP、pCAG-scFv-Myc, pCAG-mCherry)を1~2μL注入した。そして、皿電極(CUY650P5; Nepagene)で脳外側を軽くはさみ、プラスミドの注入側に陰極を合わせ、5回間欠的に電気刺激を与えた(31 V, 50 ms, at 950-ミリ秒間隔)。その後、子宮を母体の腹腔に戻し、縫合した後妊娠を継続させた。
上記の方法で妊娠継続させた後、胎仔を取り出しペントバルビタールをフック内投与した後、経心臓的に4% PFAを投与し灌流固定を行った。脳を取り出した後、さらに4℃、16時間4% PFA溶液内で後固定し、その後、OCTコンパウンド(サクラファインテックジャパン株式会社)に包埋し液体窒素で固定した。クリオスタットで12μmの切片を作製しMASコートスライドグラスに貼付した。
scFv-MycとTDP-43 (野生型、核移行シグナル変異型(mNLS)、核内凝集体形成型(C173S/C175S)、細胞質凝集体形成型(mNLS-C173S/C175S))とを培養細胞(HEK293A)に発現させ、ライセートをサンドイッチELISA法によって解析し、TDP-43とscFvの結合性を数値化した。その結果を図1に示す。
培養細胞(HEK293A)にTDP-43-FLAG (野生型及び細胞質凝集体形成型(mNLS-C173S/C175S))あるいはベクター、加えてscFv-Myc (シグナルなし、CL1、CMAシグナル)あるいはベクターを共発現させ、48時間後に細胞を回収した。細胞からcDNAを回収し、Hsp70のmRNAをリアルタイムPCRアッセイにて解析した結果を図5左に示す。細胞ライセートをウェスタンブロッティング法にてHsp70を検出し、デンシトメトリーにてタンパク量を定量化した結果を図5右に示す。
妊娠13.5日齢(E13.5)のマウス胎仔脳側脳室内にTDP-43-GFP、scFv-CMAを導入して妊娠継続させ妊娠16日目に胎仔能を固定して脳切片を作製し、抗GFP抗体、抗ユビキチン抗体、抗リン酸化TDP-43抗体にて免疫染色を行った。ミスフォールドTDP-43とはmNLS-TDP-43 C173S/C175Sのことである。結果を図7に示す。
Claims (11)
- ミスフォールドしたTDP-43に結合性を有する抗体断片と、シャペロン介在性オートファジー移行シグナルペプチドとから構成される修飾抗体断片であって、
該抗体断片が、3以下のアミノ酸置換をしてもよい、GFNIKDYY (配列番号1)のアミノ酸配列からなる重鎖CDR1、IDPEDGET (配列番号2)のアミノ酸配列からなる重鎖CDR2、及びTIIYYYGSRYVDY (配列番号3)のアミノ酸配列からなる重鎖CDR3を含む重鎖可変領域、並びに/又は
3以下のアミノ酸置換をしてもよい、SSISSSY (配列番号4)のアミノ酸配列からなる軽鎖CDR1、RTSのアミノ酸配列からなる軽鎖CDR2、及びQQGSSIPLT (配列番号5)のアミノ酸配列からなる軽鎖CDR3を含む軽鎖可変領域を含み、
該抗体断片が、scFv、VH又はVLである、
修飾抗体断片。 - 前記抗体断片がscFvである、請求項1に記載の修飾抗体断片。
- 前記抗体断片がヒト化抗体断片である、請求項1又は2に記載の修飾抗体断片。
- 請求項1~3のいずれか一項に記載の修飾抗体断片をコードする核酸。
- 請求項4に記載の核酸を含む発現ベクター。
- 請求項4に記載の核酸を含む遺伝子治療剤。
- TDP-43の凝集体が蓄積する疾患の治療用である、請求項6に記載の治療剤。
- 前記TDP-43の凝集体が蓄積する疾患が筋萎縮性側索硬化症、前頭側頭型認知症、又はPerry症候群である、請求項7に記載の治療剤。
- 熱ショックタンパク質を誘導させるために用いられる、請求項6に記載の治療剤。
- 前記熱ショックタンパク質がHsp70である、請求項9に記載の治療剤。
- 請求項4に記載の核酸の有効量を哺乳動物に投与する工程を含む、TDP-43の凝集体が蓄積する疾患の治療方法。
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| EP19768492.1A EP3770262B1 (en) | 2018-03-16 | 2019-03-15 | Antibody fragment degrading and removing abnormal tdp-43 |
| CN201980027565.XA CN112236523A (zh) | 2018-03-16 | 2019-03-15 | 降解和去除异常tdp-43的抗体片段 |
| US16/980,667 US12215142B2 (en) | 2018-03-16 | 2019-03-15 | Antibody fragment degrading and removing abnormal TDP-43 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021222168A2 (en) | 2020-04-28 | 2021-11-04 | Sola Biosciences Llc | Compositions and methods for the treatment of tdp-43 proteinopathies |
| WO2022163438A1 (ja) * | 2021-01-26 | 2022-08-04 | 株式会社ニコン | 神経細胞の解析方法、神経細胞の解析装置およびコンピュータプログラム |
| WO2023008415A1 (ja) | 2021-07-27 | 2023-02-02 | STAND Therapeutics株式会社 | ペプチドタグおよび当該ペプチドタグをコードする核酸 |
| CN116410311A (zh) * | 2023-03-22 | 2023-07-11 | 暨南大学 | 胞内抗体及其制备方法和用途 |
| WO2023204313A1 (ja) | 2022-04-22 | 2023-10-26 | 国立大学法人新潟大学 | Tdp-43の凝集抑制剤及び医薬組成物 |
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| CN115894690B (zh) * | 2022-11-30 | 2025-06-13 | 浙江大学 | 一种抗体降解子及其应用 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008529A1 (ja) | 2007-07-06 | 2009-01-15 | Tokyo Metropolitan Organization For Medical Research | Tdp-43凝集物に特異的に結合する抗体 |
| WO2013061163A2 (en) | 2011-10-28 | 2013-05-02 | Biogen Idec International Neuroscience Gmbh | Tdp-43 specific binding molecules |
| JP2013162772A (ja) | 2012-02-13 | 2013-08-22 | Shiga Univ Of Medical Science | Tdp−43の凝集体が蓄積する疾患の発症リスクを予測する方法、診断薬及び治療薬 |
| JP2014171425A (ja) | 2013-03-08 | 2014-09-22 | Shiga Univ Of Medical Science | Tdp−43の凝集体が蓄積する疾患を治療及び/又は予防するための化合物のスクリーニング方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HRP20180421T1 (hr) * | 2010-11-17 | 2018-04-20 | Chugai Seiyaku Kabushiki Kaisha | Višestruko specifične molekule za vezanje na antigen koje imaju alternativnu funkciju u odnosu na funkciju faktora viii zgrušavanja krvi |
| US8790651B2 (en) * | 2011-07-21 | 2014-07-29 | Zoetis Llc | Interleukin-31 monoclonal antibody |
| WO2016053610A1 (en) * | 2014-10-03 | 2016-04-07 | Academia Sinica | Antibodies against pathological forms of tdp-43 and uses thereof |
| KR102068600B1 (ko) | 2016-03-04 | 2020-01-21 | 쓰촨 케룬-바이오테크 바이오파마수티컬 컴퍼니 리미티드 | Pdl-1 항체, 그 약학적 조성물 및 그 용도 |
-
2019
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- 2019-03-15 EP EP19768492.1A patent/EP3770262B1/en active Active
- 2019-03-15 US US16/980,667 patent/US12215142B2/en active Active
- 2019-03-15 CN CN201980027565.XA patent/CN112236523A/zh active Pending
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009008529A1 (ja) | 2007-07-06 | 2009-01-15 | Tokyo Metropolitan Organization For Medical Research | Tdp-43凝集物に特異的に結合する抗体 |
| WO2013061163A2 (en) | 2011-10-28 | 2013-05-02 | Biogen Idec International Neuroscience Gmbh | Tdp-43 specific binding molecules |
| JP2013162772A (ja) | 2012-02-13 | 2013-08-22 | Shiga Univ Of Medical Science | Tdp−43の凝集体が蓄積する疾患の発症リスクを予測する方法、診断薬及び治療薬 |
| JP2014171425A (ja) | 2013-03-08 | 2014-09-22 | Shiga Univ Of Medical Science | Tdp−43の凝集体が蓄積する疾患を治療及び/又は予防するための化合物のスクリーニング方法 |
Non-Patent Citations (4)
| Title |
|---|
| SAMBROOKRUSSELL: "Molecular Cloning, A Laboratory Manual", 2001, COLD SPRING HARBOR LABORATORY PRESS |
| See also references of EP3770262A4 |
| TAMAKI, Y. ET AL.: "Degradative intrabody for selective elimination of pathogenic TDP-43 aggregates in vitro and in murine embryos' cerebrum", JOURNAL OF THE NEUROLOGICAL SCIENCES, vol. 381, no. 1984, 2017, pages 715, XP085295317, ISSN: 0022-510X, doi:10.1016/j.jns.2017.08.2014 * |
| TAMAKI, YOSHITAKA ET AL.: "Elimination of TDP-43 inclusions linked to amyotrophic lateral sclerosis by a misfolding-specific intrabody with dual proteolytic signals", SCIENTIFIC REPORTS, vol. 8, no. 6030, 16 April 2018 (2018-04-16), XP055638518, ISSN: 2045-2322 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021222168A2 (en) | 2020-04-28 | 2021-11-04 | Sola Biosciences Llc | Compositions and methods for the treatment of tdp-43 proteinopathies |
| WO2022163438A1 (ja) * | 2021-01-26 | 2022-08-04 | 株式会社ニコン | 神経細胞の解析方法、神経細胞の解析装置およびコンピュータプログラム |
| JPWO2022163438A1 (ja) * | 2021-01-26 | 2022-08-04 | ||
| JP7647773B2 (ja) | 2021-01-26 | 2025-03-18 | 株式会社ニコン | 神経細胞の解析方法、神経細胞の解析装置およびコンピュータプログラム |
| WO2023008415A1 (ja) | 2021-07-27 | 2023-02-02 | STAND Therapeutics株式会社 | ペプチドタグおよび当該ペプチドタグをコードする核酸 |
| WO2023204313A1 (ja) | 2022-04-22 | 2023-10-26 | 国立大学法人新潟大学 | Tdp-43の凝集抑制剤及び医薬組成物 |
| CN116410311A (zh) * | 2023-03-22 | 2023-07-11 | 暨南大学 | 胞内抗体及其制备方法和用途 |
| CN116410311B (zh) * | 2023-03-22 | 2023-12-12 | 暨南大学 | 胞内抗体及其制备方法和用途 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3770262B1 (en) | 2026-01-14 |
| EP3770262A4 (en) | 2021-12-15 |
| CN112236523A (zh) | 2021-01-15 |
| JPWO2019177138A1 (ja) | 2021-05-13 |
| EP3770262A1 (en) | 2021-01-27 |
| US12215142B2 (en) | 2025-02-04 |
| US20210024621A1 (en) | 2021-01-28 |
| JP7320282B2 (ja) | 2023-08-03 |
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