HK1248270A1 - 製備和使用竇房結樣起搏器心肌細胞和心室樣心肌細胞的方法 - Google Patents

製備和使用竇房結樣起搏器心肌細胞和心室樣心肌細胞的方法

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Publication number
HK1248270A1
HK1248270A1 HK18107486.6A HK18107486A HK1248270A1 HK 1248270 A1 HK1248270 A1 HK 1248270A1 HK 18107486 A HK18107486 A HK 18107486A HK 1248270 A1 HK1248270 A1 HK 1248270A1
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Hong Kong
Prior art keywords
cardiomyocytes
ventricular
making
methods
pacemaker
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HK18107486.6A
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English (en)
Inventor
Gordon Keller
Stephanie Protze
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大學健康網路
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=56692001&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=HK1248270(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 大學健康網路 filed Critical 大學健康網路
Publication of HK1248270A1 publication Critical patent/HK1248270A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K35/00Medicinal preparations containing materials or reaction products thereof with undetermined constitution
    • A61K35/12Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
    • A61K35/34Muscles; Smooth muscle cells; Heart; Cardiac stem cells; Myoblasts; Myocytes; Cardiomyocytes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system
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    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/06Animal cells or tissues; Human cells or tissues
    • C12N5/0602Vertebrate cells
    • C12N5/0652Cells of skeletal and connective tissues; Mesenchyme
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    • C12N5/00Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
    • C12N5/10Cells modified by introduction of foreign genetic material
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
    • C12N2501/10Growth factors
    • C12N2501/115Basic fibroblast growth factor (bFGF, FGF-2)
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
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    • C12N2501/15Transforming growth factor beta (TGF-β)
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
    • C12N2501/30Hormones
    • C12N2501/38Hormones with nuclear receptors
    • C12N2501/385Hormones with nuclear receptors of the family of the retinoic acid recptor, e.g. RAR, RXR; Peroxisome proliferator-activated receptor [PPAR]
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    • C12N2501/00Active agents used in cell culture processes, e.g. differentation
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    • C12N2506/00Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells
    • C12N2506/45Differentiation of animal cells from one lineage to another; Differentiation of pluripotent cells from artificially induced pluripotent stem cells

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  • Health & Medical Sciences (AREA)
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  • Cell Biology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • Developmental Biology & Embryology (AREA)
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  • Pharmacology & Pharmacy (AREA)
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  • Virology (AREA)
  • Vascular Medicine (AREA)
  • Rheumatology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
  • Peptides Or Proteins (AREA)
  • Materials For Medical Uses (AREA)
HK18107486.6A 2015-02-17 2018-06-08 製備和使用竇房結樣起搏器心肌細胞和心室樣心肌細胞的方法 HK1248270A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562117107P 2015-02-17 2015-02-17
PCT/CA2016/050142 WO2016131137A1 (en) 2015-02-17 2016-02-17 Methods for making and using sinoatrial node-like pacemaker cardiomyocytes and ventricular-like cardiomyocytes

Publications (1)

Publication Number Publication Date
HK1248270A1 true HK1248270A1 (zh) 2018-10-12

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ID=56692001

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HK18107486.6A HK1248270A1 (zh) 2015-02-17 2018-06-08 製備和使用竇房結樣起搏器心肌細胞和心室樣心肌細胞的方法

Country Status (6)

Country Link
US (2) US10561687B2 (zh)
EP (1) EP3259348A4 (zh)
JP (2) JP2018510649A (zh)
CA (1) CA2976283C (zh)
HK (1) HK1248270A1 (zh)
WO (1) WO2016131137A1 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10596200B2 (en) 2014-08-22 2020-03-24 Procella Therapeutics Ab Use of LIFR or FGFR3 as a cell surface marker for isolating human cardiac ventricular progenitor cells
EP3524673A1 (en) 2014-08-22 2019-08-14 Procella Therapeutics AB Use of jagged 1/frizzled 4 as a cell surface marker for isolating human cardiac ventricular progenitor cells
US10561687B2 (en) 2015-02-17 2020-02-18 University Health Network Methods for making and using sinoatrial node-like pacemaker cardiomyocytes and ventricular-like cardiomyocytes
JP7097814B2 (ja) 2016-02-19 2022-07-08 プロセラ セラピューティクス アーベー ヒト心室前駆細胞の生着のための遺伝子マーカー
US10508263B2 (en) 2016-11-29 2019-12-17 Procella Therapeutics Ab Methods for isolating human cardiac ventricular progenitor cells
KR20230167143A (ko) * 2016-12-04 2023-12-07 유니버시티 헬스 네트워크 인간 다능성 줄기 세포로부터 심방 및 심실 심근세포 계통의 생성
JP7275109B2 (ja) * 2017-08-23 2023-05-17 プロセラ セラピューティクス アーベー ニューロピリン-1(nrp1)のヒト心室前駆細胞を単離するための細胞表面マーカーとしての使用
SG11202100006QA (en) * 2018-07-16 2021-01-28 Agency Science Tech & Res Method for isolating a cardiomyocyte population
CA3139072A1 (en) 2019-05-03 2020-11-12 University Health Network Cardiomyocyte compositions and use thereof
MX2022004107A (es) 2019-10-09 2022-08-10 Bluerock Therapeutics Lp Celulas con expresion transgenica sostenida.
KR102224273B1 (ko) * 2019-10-10 2021-03-08 고려대학교 산학협력단 줄기세포 유래 성숙 심근세포 및 이를 이용한 심혈관 질환 모델
US20230000924A1 (en) * 2019-12-02 2023-01-05 Cornell University Compositions and methods for generation of sinoatrial node-like cells and their use in drug discovery
KR20220149592A (ko) * 2020-03-19 2022-11-08 오리즈루 세라퓨틱스 가부시키가이샤 심근세포 정제 방법
JP2023524502A (ja) * 2020-05-01 2023-06-12 ユニバーシティー ヘルス ネットワーク 洞房結節様ペースメーカー細胞のためのマーカーとしてのcd34の使用
CA3214490A1 (en) 2021-03-25 2022-09-29 Bluerock Therapeutics Lp Methods for obtaining induced pluripotent stem cells
WO2024011320A1 (en) * 2022-07-12 2024-01-18 University Health Network Atrioventricular node-like pacemaker cells
EP4353816A1 (en) * 2022-10-11 2024-04-17 Stichting Amsterdam UMC Methods for producing sinoatrial node subpopulations

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5843780A (en) 1995-01-20 1998-12-01 Wisconsin Alumni Research Foundation Primate embryonic stem cells
US5994619A (en) 1996-04-01 1999-11-30 University Of Massachusetts, A Public Institution Of Higher Education Of The Commonwealth Of Massachusetts, As Represented By Its Amherst Campus Production of chimeric bovine or porcine animals using cultured inner cell mass cells
US5945577A (en) 1997-01-10 1999-08-31 University Of Massachusetts As Represented By Its Amherst Campus Cloning using donor nuclei from proliferating somatic cells
EP1412479A4 (en) 2001-07-12 2004-07-28 Geron Corp CELLS WITH CARDIOMYOCYTE GENERATION PRODUCED FROM HUMAN PLURIPOTENT STEM CELLS
US7732199B2 (en) 2001-07-12 2010-06-08 Geron Corporation Process for making transplantable cardiomyocytes from human embryonic stem cells
CN103113463B (zh) 2005-12-13 2015-02-18 国立大学法人京都大学 核重新编程因子
US20090227032A1 (en) 2005-12-13 2009-09-10 Kyoto University Nuclear reprogramming factor and induced pluripotent stem cells
US8278104B2 (en) 2005-12-13 2012-10-02 Kyoto University Induced pluripotent stem cells produced with Oct3/4, Klf4 and Sox2
US8153427B2 (en) * 2007-03-15 2012-04-10 California Stem Cell, Inc. Cardiomyocytes and methods of producing and purifying cardiomyocytes
JP2008307007A (ja) 2007-06-15 2008-12-25 Bayer Schering Pharma Ag 出生後のヒト組織由来未分化幹細胞から誘導したヒト多能性幹細胞
MX2010002242A (es) 2007-08-31 2010-06-01 Whitehead Biomedical Inst Estimulación de ruta wnt en reprogramacion de celulas somaticas.
US9683232B2 (en) 2007-12-10 2017-06-20 Kyoto University Efficient method for nuclear reprogramming
RU2010139426A (ru) 2008-03-17 2012-04-27 Зе Скрипс Ресеч Инститьют (Us) Комбинация химического и генетического подходов к получению индуцированных плюрипотентных стволовых клеток
CA2717962C (en) 2008-03-27 2019-05-14 Mount Sinai School Of Medicine Of New York University Human cardiovascular progenitor cells
US20110305672A1 (en) 2008-07-25 2011-12-15 University Of Georgia Research Foundation, Inc. COMPOSITIONS FOR MESODERM DERIVED ISL1+ MULTIPOTENT CELLS (IMPs), EPICARDIAL PROGENITOR CELLS (EPCs) AND MULTIPOTENT CD56C CELLS (C56Cs) AND METHODS OF PRODUCING AND USING SAME
ES2685171T3 (es) 2010-06-14 2018-10-05 The Scripps Research Institute Reprogramación de células a un nuevo destino
JP6199740B2 (ja) 2010-08-27 2017-09-20 ユニバーシティー ヘルス ネットワーク Sirpa発現に基づく多能性幹細胞に由来する心筋細胞前駆細胞および心筋細胞を濃縮するための方法
EP2756075B1 (en) 2011-08-29 2019-10-02 INSERM (Institut National de la Santé et de la Recherche Médicale) Method for preparing induced paraxial mesoderm progenitor (ipam) cells and their use
WO2013056072A1 (en) 2011-10-13 2013-04-18 Wisconsin Alumni Research Foundation Generation of cardiomyocytes from human pluripotent stem cells
WO2013111875A1 (ja) 2012-01-27 2013-08-01 国立大学法人京都大学 多能性幹細胞の心筋分化誘導法
WO2014078414A1 (en) * 2012-11-13 2014-05-22 Joseph Wu Chemically defined production of cardiomyocytes from pluripotent stem cells
US20160051514A1 (en) 2013-05-03 2016-02-25 The Brigham And Women's Hospital, Inc. Methods for treatment of cardiomyopathy
JP6429280B2 (ja) 2013-05-14 2018-11-28 国立大学法人京都大学 効率的な心筋細胞の誘導方法
KR20160052726A (ko) 2013-09-13 2016-05-12 유니버시티 헬스 네트워크 심장외막 세포 생성을 위한 방법 및 조성물
ES2689804T3 (es) 2013-11-20 2018-11-15 Miltenyi Biotec Gmbh Composiciones de subpoblaciones de cardiomiocitos
US9765299B2 (en) 2014-09-10 2017-09-19 Wisconsin Alumni Research Foundation Chemically defined albumin-free conditions for cardiomyocyte differentiation of human pluripotent stem cells
CN104293730B (zh) 2014-09-23 2017-07-28 云南中科灵长类生物医学重点实验室 多能干细胞体外定向分化为心肌细胞的方法
US10561687B2 (en) 2015-02-17 2020-02-18 University Health Network Methods for making and using sinoatrial node-like pacemaker cardiomyocytes and ventricular-like cardiomyocytes
US10131878B2 (en) 2015-04-06 2018-11-20 Wisconsin Alumni Research Foundation Methods for epicardial differentiation of human pluripotent stem cells
WO2017002888A1 (ja) 2015-06-29 2017-01-05 国立大学法人京都大学 多能性幹細胞から生殖細胞への分化誘導方法
WO2017039445A1 (en) 2015-09-01 2017-03-09 Pluriomics B.V. An in vitro method of differentiating a human pluripotent stem cell population into a cardiomyocyte cell population
KR20230167143A (ko) 2016-12-04 2023-12-07 유니버시티 헬스 네트워크 인간 다능성 줄기 세포로부터 심방 및 심실 심근세포 계통의 생성
CN113249310B (zh) 2021-05-17 2022-10-11 湖北大学 一种拓展性多能干细胞诱导分化为心肌细胞的方法及应用

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JP2020182465A (ja) 2020-11-12
EP3259348A4 (en) 2018-07-18
JP6781355B1 (ja) 2020-11-04
JP2018510649A (ja) 2018-04-19
WO2016131137A1 (en) 2016-08-25
US20200353011A1 (en) 2020-11-12
US11730770B2 (en) 2023-08-22
CA2976283C (en) 2022-04-26
US10561687B2 (en) 2020-02-18
US20180028572A1 (en) 2018-02-01
EP3259348A1 (en) 2017-12-27
CA2976283A1 (en) 2016-08-25

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