CA3070855A1 - Braf-specific tcrs and uses thereof - Google Patents

Braf-specific tcrs and uses thereof Download PDF

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Publication number
CA3070855A1
CA3070855A1 CA3070855A CA3070855A CA3070855A1 CA 3070855 A1 CA3070855 A1 CA 3070855A1 CA 3070855 A CA3070855 A CA 3070855A CA 3070855 A CA3070855 A CA 3070855A CA 3070855 A1 CA3070855 A1 CA 3070855A1
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Prior art keywords
cell
seq
amino acid
acid sequence
host cell
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Pending
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CA3070855A
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English (en)
French (fr)
Inventor
Joshua VEATCH
Stanley R. Riddell
Sylvia Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Washington
Fred Hutchinson Cancer Center
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University of Washington
Fred Hutchinson Cancer Center
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Publication of CA3070855A1 publication Critical patent/CA3070855A1/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/705—Receptors; Cell surface antigens; Cell surface determinants
    • C07K14/70503—Immunoglobulin superfamily
    • C07K14/7051—T-cell receptor (TcR)-CD3 complex
    • 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
    • A61K35/14—Blood; Artificial blood
    • A61K35/17—Lymphocytes; B-cells; T-cells; Natural killer cells; Interferon-activated or cytokine-activated lymphocytes
    • 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
    • A61K35/28—Bone marrow; Haematopoietic stem cells; Mesenchymal stem cells of any origin, e.g. adipose-derived stem cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/10—Cellular immunotherapy characterised by the cell type used
    • A61K40/11—T-cells, e.g. tumour infiltrating lymphocytes [TIL] or regulatory T [Treg] cells; Lymphokine-activated killer [LAK] cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/10—Cellular immunotherapy characterised by the cell type used
    • A61K40/15—Natural-killer [NK] cells; Natural-killer T [NKT] cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/10—Cellular immunotherapy characterised by the cell type used
    • A61K40/19—Dendritic cells
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/30—Cellular immunotherapy characterised by the recombinant expression of specific molecules in the cells of the immune system
    • A61K40/31—Chimeric antigen receptors [CAR]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/30—Cellular immunotherapy characterised by the recombinant expression of specific molecules in the cells of the immune system
    • A61K40/32—T-cell receptors [TCR]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K40/00—Cellular immunotherapy
    • A61K40/40—Cellular immunotherapy characterised by antigens that are targeted or presented by cells of the immune system
    • A61K40/41—Vertebrate antigens
    • A61K40/42—Cancer antigens
    • A61K40/4244—Enzymes
    • A61K40/4251—Kinases, e.g. Raf or Src
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
    • C07K16/18—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans
    • C07K16/32—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies against material from animals or humans against translation products of oncogenes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
    • C12N15/85—Vectors or expression systems specially adapted for eukaryotic hosts for animal cells
    • C12N15/86—Viral vectors
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/87—Introduction of foreign genetic material using processes not otherwise provided for, e.g. co-transformation
    • C12N15/90—Stable introduction of foreign DNA into chromosome
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • 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
    • C12N5/0634—Cells from the blood or the immune system
    • C12N5/0636—T lymphocytes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N7/00—Viruses; Bacteriophages; Compositions thereof; Preparation or purification thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2121/00—Preparations for use in therapy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2239/00—Indexing codes associated with cellular immunotherapy of group A61K40/00
    • A61K2239/46—Indexing codes associated with cellular immunotherapy of group A61K40/00 characterised by the cancer treated
    • A61K2239/57—Skin; melanoma
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2300/00—Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00—Medicinal preparations containing peptides
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N2740/00—Reverse transcribing RNA viruses
    • C12N2740/00011—Details
    • C12N2740/10011—Retroviridae
    • C12N2740/10041—Use of virus, viral particle or viral elements as a vector
    • C12N2740/10043—Use of virus, viral particle or viral elements as a vector viral genome or elements thereof as genetic vector

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Organic Chemistry (AREA)
  • Immunology (AREA)
  • Engineering & Computer Science (AREA)
  • Zoology (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Biotechnology (AREA)
  • Epidemiology (AREA)
  • Cell Biology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biophysics (AREA)
  • Virology (AREA)
  • Microbiology (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Hematology (AREA)
  • Developmental Biology & Embryology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Toxicology (AREA)
  • Plant Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Mycology (AREA)
  • Oncology (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
CA3070855A 2017-08-11 2018-08-10 Braf-specific tcrs and uses thereof Pending CA3070855A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201762544695P 2017-08-11 2017-08-11
US62/544,695 2017-08-11
PCT/US2018/046350 WO2019033057A1 (en) 2017-08-11 2018-08-10 SPECIFIC BRAF TCR AND USES THEREOF

Publications (1)

Publication Number Publication Date
CA3070855A1 true CA3070855A1 (en) 2019-02-14

Family

ID=65272504

Family Applications (1)

Application Number Title Priority Date Filing Date
CA3070855A Pending CA3070855A1 (en) 2017-08-11 2018-08-10 Braf-specific tcrs and uses thereof

Country Status (9)

Country Link
US (1) US12398191B2 (https=)
EP (1) EP3665191A4 (https=)
JP (2) JP2020533962A (https=)
KR (1) KR20200035104A (https=)
CN (1) CN111212848A (https=)
AU (1) AU2018314242A1 (https=)
CA (1) CA3070855A1 (https=)
MX (1) MX2020001287A (https=)
WO (1) WO2019033057A1 (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109679917B (zh) * 2018-09-30 2020-09-25 北京鼎成肽源生物技术有限公司 一种lrfft2细胞
GB201819540D0 (en) * 2018-11-30 2019-01-16 Adaptimmune Ltd T cell modification
CN111057690A (zh) * 2019-12-23 2020-04-24 维塔恩(广州)医药有限公司 肿瘤相关基因braf突变相关抗原短肽及其应用
EP4161653A1 (en) * 2020-06-03 2023-04-12 Bionecure Therapeutics, Inc. Trophoblast cell-surface antigen-2 (trop-2) antibodies
WO2021243695A1 (en) * 2020-06-05 2021-12-09 Guangdong Tcrcure Biopharma Technology Co., Ltd. Tcr-t cell therapy targeting epstein-barr virus
WO2024097637A1 (en) * 2022-10-31 2024-05-10 The United States Of America, As Represented By The Secretary, Department Of Health And Human Services Hla-a3-restricted t cell receptors against braf with v600e mutation
KR20250093237A (ko) * 2023-12-14 2025-06-24 (주)지아이이노베이션 Cd80 단백질과 il-2 단백질을 포함하는 융합단백질 및 키메라 항원 수용체를 발현하는 t 세포를 포함하는 암의 예방 또는 치료용 조성물
WO2025245169A1 (en) 2024-05-21 2025-11-27 Fred Hutchinson Cancer Center Immunotherapy cells equipped with a collagen-targeting payload

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA15704A (en) 1882-10-26 Jordan, Robert G. Improvements on furniture castors
US5283173A (en) 1990-01-24 1994-02-01 The Research Foundation Of State University Of New York System to detect protein-protein interactions
US5420032A (en) 1991-12-23 1995-05-30 Universitge Laval Homing endonuclease which originates from chlamydomonas eugametos and recognizes and cleaves a 15, 17 or 19 degenerate double stranded nucleotide sequence
US5792632A (en) 1992-05-05 1998-08-11 Institut Pasteur Nucleotide sequence encoding the enzyme I-SceI and the uses thereof
US7067318B2 (en) 1995-06-07 2006-06-27 The Regents Of The University Of Michigan Methods for transfecting T cells
GB9518220D0 (en) 1995-09-06 1995-11-08 Medical Res Council Checkpoint gene
US6410319B1 (en) 1998-10-20 2002-06-25 City Of Hope CD20-specific redirected T cells and their use in cellular immunotherapy of CD20+ malignancies
US7070995B2 (en) 2001-04-11 2006-07-04 City Of Hope CE7-specific redirected immune cells
US7514537B2 (en) 2001-04-30 2009-04-07 City Of Hope Chimeric immunoreceptor useful in treating human gliomas
AU2003215869B2 (en) 2002-03-15 2008-04-24 Cellectis Hybrid and single chain meganucleases and use thereof
EP3202899B1 (en) 2003-01-28 2020-10-21 Cellectis Custom-made meganuclease and use thereof
JP2008527001A (ja) 2005-01-13 2008-07-24 ザ ジョンズ ホプキンス ユニバーシティー 前立腺幹細胞抗原ワクチンおよびその使用
US7811993B2 (en) * 2005-06-29 2010-10-12 The Wistar Institute Of Anatomy And Biology Methods and compositions for treating melanoma
ES2582091T3 (es) 2005-10-18 2016-09-09 Precision Biosciences Meganucleasas diseñadas racionalmente con especificidad de secuencia y afinidad de unión a ADN alteradas
KR101319499B1 (ko) 2008-02-22 2013-10-17 엘지디스플레이 주식회사 화학적 자기조립 방법을 이용한 나노선 혹은탄소나노튜브의 적층 및 패턴형성 방법과, 이를 적용한액정표시장치의 제조방법
EP2331566B1 (en) 2008-08-26 2015-10-07 City of Hope Method and compositions for enhanced anti-tumor effector functioning of t cells
EP2210903A1 (en) 2009-01-21 2010-07-28 Monoclonal Antibodies Therapeutics Anti-CD160 monoclonal antibodies and uses thereof
EP2258719A1 (en) 2009-05-19 2010-12-08 Max-Delbrück-Centrum für Molekulare Medizin (MDC) Multiple target T cell receptor
US8586526B2 (en) 2010-05-17 2013-11-19 Sangamo Biosciences, Inc. DNA-binding proteins and uses thereof
US9676854B2 (en) 2011-08-15 2017-06-13 Medimmune, Llc Anti-B7-H4 antibodies and their uses
US20150071918A1 (en) * 2012-05-09 2015-03-12 H. Lee Moffitt Cancer Center And Research Institute, Inc. Peptides for the treatment of cancer
AU2013266968B2 (en) 2012-05-25 2017-06-29 Emmanuelle CHARPENTIER Methods and compositions for RNA-directed target DNA modification and for RNA-directed modulation of transcription
BR122020002986A8 (pt) 2012-08-20 2023-04-18 Seattle Childrens Hospital Dba Seattle Childrens Res Inst Método e composições para imunoterapia celular
US8697359B1 (en) 2012-12-12 2014-04-15 The Broad Institute, Inc. CRISPR-Cas systems and methods for altering expression of gene products
US20140186843A1 (en) 2012-12-12 2014-07-03 Massachusetts Institute Of Technology Methods, systems, and apparatus for identifying target sequences for cas enzymes or crispr-cas systems for target sequences and conveying results thereof
CA2894879A1 (en) 2012-12-19 2014-06-26 Amplimmune, Inc. B7-h4 specific antibodies, and compositions and methods of use thereof
CA2930877A1 (en) 2013-11-18 2015-05-21 Crispr Therapeutics Ag Crispr-cas system materials and methods
NZ759969A (en) * 2013-12-20 2022-12-23 Fred Hutchinson Cancer Center Tagged chimeric effector molecules and receptors thereof
US10202640B2 (en) * 2014-05-07 2019-02-12 The Board Of Trustees Of The Leland Stanford Junior University Single cell analysis of T cells using high-throughput multiplex amplification and deep sequencing
WO2016040724A1 (en) 2014-09-12 2016-03-17 Genentech, Inc. Anti-b7-h4 antibodies and immunoconjugates
RU2017115315A (ru) 2014-10-03 2018-11-08 Дана-Фарбер Кэнсер Инститьют, Инк. Антитела к рецептору глюкокортикоид-индуцированного фактора некроза опухоли (gitr) и способы их применения
HK1243631A1 (zh) * 2014-10-27 2018-07-20 Fred Hutchinson Cancer Research Center 用於提高过继细胞免疫疗法效力的组合物和方法
DK3653221T5 (da) 2015-02-19 2024-08-26 Compugen Ltd Anti-pvrig-antistoffer og anvendelsesfremgangsmåder
EP3277294B1 (en) * 2015-04-01 2024-05-15 Adaptive Biotechnologies Corp. Method of identifying human compatible t cell receptors specific for an antigenic target
JO3620B1 (ar) 2015-08-05 2020-08-27 Amgen Res Munich Gmbh مثبطات نقطة فحص مناعية للاستخدام في علاج سرطانات محمولة عبر الدم
US11815514B2 (en) 2015-12-04 2023-11-14 Juno Therapeutics, Inc. Methods and compositions related to toxicity associated with cell therapy
WO2017112944A1 (en) * 2015-12-23 2017-06-29 Fred Hutchinson Cancer Research Center High affinity t cell receptors and uses thereof

Also Published As

Publication number Publication date
AU2018314242A1 (en) 2020-02-13
EP3665191A1 (en) 2020-06-17
US12398191B2 (en) 2025-08-26
US20200223899A1 (en) 2020-07-16
WO2019033057A1 (en) 2019-02-14
JP2020533962A (ja) 2020-11-26
JP2023105045A (ja) 2023-07-28
US20210238250A9 (en) 2021-08-05
CN111212848A (zh) 2020-05-29
KR20200035104A (ko) 2020-04-01
EP3665191A4 (en) 2021-05-05
MX2020001287A (es) 2020-08-20

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