Patents by Inventor Kenji Osafune

Kenji Osafune has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11821007
    Abstract: A method of producing renal progenitor cells from pluripotent stem cells involves culturing pluripotent stem cells in a medium containing FGF2, BMP4, a GSK-3? inhibitor, and retinoic acid or a derivative thereof, culturing the resulting cells in a medium containing FGF2, a GSK-3? inhibitor, and BMP7, culturing the resulting cells in a medium containing FGF2, a GSK-3? inhibitor, BMP7, and a TGF? inhibitor, culturing the resulting cells in a medium containing FGF2, a GSK-3? inhibitor, BMP7, activin, and a ROCK (Rho-kinase) inhibitor, culturing the resulting cells in a medium containing retinoic acid or a derivative thereof, and FGF9, and culturing the resulting cells in a medium containing a GSK-3? inhibitor and FGF9, to induce renal progenitor cells from intermediate mesodermal cells.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: November 21, 2023
    Assignee: KYOTO UNIVERSITY
    Inventors: Shinichi Sueta, Tomoko Kasahara, Kenji Osafune
  • Patent number: 11746332
    Abstract: A method for acquiring and producing high-purity renal progenitor cells from a renal progenitor cell population into which pluripotent stem cells are induced to differentiate, by identifying a cell surface antigen marker specific to renal progenitor cells. The high-purity renal progenitor cells can be used in regenerative medicine for renal diseases, such as renal failure.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: September 5, 2023
    Assignees: Astellas Pharma Inc., Kyoto University
    Inventors: Tatsuya Kawamoto, Yukiko Yamagishi, Kenji Osafune
  • Patent number: 11225642
    Abstract: The present invention provides: a method for producing renal progenitor cells from intermediate mesoderm cells, which comprises a step of culturing intermediate mesoderm cells in a medium containing a TGF? signaling activator(s) and a BMP inhibitor(s); the renal progenitor cells produced by the method; a pharmaceutical composition comprising the renal progenitor cells; and a therapeutic drug for kidney diseases comprising the renal progenitor cells.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: January 18, 2022
    Assignees: Kyoto University, Astellas Pharma Inc.
    Inventors: Kenji Osafune, Takafumi Toyohara, Yukiko Yamagishi
  • Patent number: 10961508
    Abstract: This invention provides a method for stably producing alveolar epithelial progenitor cells from pluripotent stem cells, including steps of culturing pluripotent stem cells in (1) a medium containing activin A and a GSK3? inhibitor, (2) a medium containing a BMP inhibitor and a TGF? inhibitor, and (3) a medium containing BMP4, retinoic acid, and a GSK3? inhibitor.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: March 30, 2021
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Shimpei Gotoh, Isao Ito, Michiaki Mishima
  • Patent number: 10731133
    Abstract: A method for acquiring and producing high-purity renal progenitor cells from a renal progenitor cell population into which pluripotent stem cells are induced to differentiate, by identifying a cell surface antigen marker specific to renal progenitor cells. The disclosed method may include, for example, the steps of: (i) culturing the pluripotent stem cells under conditions that induce differentiation into renal progenitor cells; and (ii) sorting a cell population from the cells obtained at step (i), by using at least one cell surface marker selected from the group consisting of CD9(?), CD55(?), CD106(+), CD140a(+), CD140b(+), CD165(+), CD271(+) and CD326(?).
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: August 4, 2020
    Assignees: Astellas Pharma Inc., Kyoto University
    Inventors: Tatsuya Kawamoto, Yukiko Yamagishi, Kenji Osafune
  • Patent number: 10711249
    Abstract: A method for producing hepatocytes from hepatoblasts is provided. The method includes the step of culturing the hepatoblasts in a medium containing a compound selected from the group consisting of pregnenolone and an adrenergic agonist. The hepatoblasts can be obtained by culturing endodermal cells in a medium containing DMSO, and the endodermal cells can be obtained by culturing pluripotent stem cells in a medium containing Activin A and a GSK-3? inhibitor. Accordingly, a method for producing hepatocytes from pluripotent stem cells is also provided by employing the method of the present invention.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: July 14, 2020
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Maki Kotaka
  • Patent number: 10472610
    Abstract: Provided is a method for generating pancreatic bud cells, having the step of culturing PDX1+/NKX6.1? cells in a medium containing KGF, EGF and a BMP inhibitor. The culturing step may be performed in suspension cultures or in adherent cultures. When the cells are cultured in adherent cultures, the cells may be cultured in a medium further containing a ROCK inhibitor or a nonmuscle myosin II inhibitor.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: November 12, 2019
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Taro Toyoda
  • Patent number: 9902938
    Abstract: An object of the present invention is to provide a method for inducing the differentiation of pancreatic precursor cells into exocrine pancreatic cells. The above object is achieved by providing a method for inducing the differentiation of pancreatic precursor cells into exocrine pancreatic cells using a culture solution containing a histone deacetylase inhibitor and/or a ligand protein for a Notch signal, and a protein kinase C activator.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: February 27, 2018
    Assignee: Kyoto University
    Inventors: Kenji Osafune, Michinori Funato, Norikazu Nishino
  • Patent number: 9890357
    Abstract: The present invention provides a method for inducing differentiation of a human pluripotent stem cell into an intermediate mesoderm cell without the use of a growth factor. Such method comprises performing culture in a medium containing a specific compound, so as to induce differentiation of a human pluripotent stem cell into an intermediate mesoderm cell.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: February 13, 2018
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Toshikazu Araoka
  • Patent number: 9796962
    Abstract: Provided is a method for inducing pancreatic hormone-producing cells from pancreatic progenitor cells efficiently. The method comprises a step of culturing the cells in a culture medium comprising sodium cromoglicate.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: October 24, 2017
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Nobuya Inagaki, Taro Toyoda, Yasushi Kondo
  • Publication number: 20170016069
    Abstract: This invention provides a method of comparing disease markers obtained from subject samples to test for, detect, or diagnose autosomal dominant polycystic kidney disease and a disease marker for such disease. The method for detecting autosomal dominant polycystic kidney disease and the method for screening for an agent for treatment or prevention of such disease comprise detecting a gene that is expressed specifically in cases of autosomal dominant polycystic kidney disease, including IGFBP7.
    Type: Application
    Filed: July 15, 2016
    Publication date: January 19, 2017
    Applicant: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Tomonaga Ameku, Akira Watanabe
  • Publication number: 20160289642
    Abstract: Provided is a method for inducing pancreatic hormone-producing cells from pancreatic progenitor cells efficiently. The method comprises a step of culturing the cells in a culture medium comprising sodium cromoglicate.
    Type: Application
    Filed: August 6, 2014
    Publication date: October 6, 2016
    Inventors: Kenji Osafune, Nobuya Inagaki, Taro Toyoda, Yasushi Kondo
  • Publication number: 20160137985
    Abstract: The present invention provides: a method for producing renal progenitor cells from intermediate mesoderm cells, which comprises a step of culturing intermediate mesoderm cells in a medium containing a TGF? signaling activator(s) and a BMP inhibitor(s); the renal progenitor cells produced by the method; a pharmaceutical composition comprising the renal progenitor cells; and a therapeutic drug for kidney diseases comprising the renal progenitor cells.
    Type: Application
    Filed: June 11, 2014
    Publication date: May 19, 2016
    Applicants: KYOTO UNIVERSITY, ASTELLAS PHARMA INC.
    Inventors: Kenji Osafune, Takafumi TOYOHARA, Yukiko YAMAGISHI
  • Patent number: 9334475
    Abstract: An object of the present invention is to provide a method for inducing the differentiation of erythropoietin-producing cells from human pluripotent stem cells. The above object is achieved by providing a method for inducing the differentiation of erythropoietin-producing cells from human pluripotent stem cells using a medium containing a specific growth factor and a specific compound.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: May 10, 2016
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Hirofumi Hitomi
  • Publication number: 20160108366
    Abstract: An object of the present invention is to provide a method for inducing the differentiation of pancreatic precursor cells into exocrine pancreatic cells. The above object is achieved by providing a method for inducing the differentiation of pancreatic precursor cells into exocrine pancreatic cells using a culture solution containing a histone deacetylase inhibitor and/or a ligand protein for a Notch signal, and a protein kinase C activator.
    Type: Application
    Filed: December 26, 2013
    Publication date: April 21, 2016
    Applicant: Kyoto University
    Inventors: Kenji Osafune, Michinori Funato, Norikazu Nishino
  • Patent number: 9121011
    Abstract: The present invention relates to: a method for producing an intermediate mesoderm cell from a human pluripotent stem cell, comprising a step of culturing the human pluripotent stem cell in a medium containing Activin A and Wnt or a functional equivalent of Wnt and a step of culturing cells in a medium containing BMP and Wnt or a functional equivalent of Wnt; to a method for producing a metanephric cell from the intermediate mesoderm cell produced by the first method; to a human pluripotent stem cell having a foreign reporter gene in the chromosome wherein the gene is expressed interlocked with the expression of endogenous OSR1; to a method for screening for an inducer for differentiation into intermediate mesoderm using the human pluripotent stem cell; and to a kit for inducing the differentiation into an intermediate mesoderm cell.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 1, 2015
    Assignee: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Shin-ichi Mae, Masatoshi Kajiwara
  • Publication number: 20150087060
    Abstract: An object of the present invention is to provide a method for inducing the differentiation of erythropoietin-producing cells from human pluripotent stem cells. The above object is achieved by providing a method for inducing the differentiation of erythropoietin-producing cells from human pluripotent stem cells using a medium containing a specific growth factor and a specific compound.
    Type: Application
    Filed: April 4, 2013
    Publication date: March 26, 2015
    Applicant: Kyoto University
    Inventors: Kenji Osafune, Hirofumi Hitomi
  • Publication number: 20140363888
    Abstract: The present invention provides a method for inducing differentiation of a human pluripotent stem cell into an intermediate mesoderm cell without the use of a growth factor. Such method comprises performing culture in a medium containing a specific compound, so as to induce differentiation of a human pluripotent stem cell into an intermediate mesoderm cell.
    Type: Application
    Filed: December 19, 2012
    Publication date: December 11, 2014
    Applicant: Kyoto University
    Inventors: Kenji Osafune, Toshikazu Araoka
  • Publication number: 20140213482
    Abstract: The present invention relates to a method for producing pluripotent stem cells, which comprises the steps of introducing an artificial chromosome having a genetically modified chromosome fragment as a targeting vector, and determining the number of some or all copies of the introduced artificial chromosome using an SNP array, so as to select pluripotent stem cells modified by homologous recombination, and, a method for detecting pluripotent stem cells genetically modified by homologous recombination.
    Type: Application
    Filed: September 20, 2012
    Publication date: July 31, 2014
    Inventors: Shinya Yamanaka, Kenji Osafune
  • Publication number: 20130225443
    Abstract: The present invention provides a method of examining polycystic kidney disease or a complication of polycystic kidney disease using a gene(s) selected from the group consisting of NTNG1, POSTN, TNC, KAL1, BST1, ACAT2, INSIG1, SCD, HSD3B1, KRT7, USP40, SULT1E1, BMP6, CD274, CTGF, E2F7, EDN1, FAM43A, FRMD3, MMP10, MYEOV, NR2F1, NRCAM, PDCK1, PLXNA2, SLC30A3, SNAI1, SPOCD1, MMP1, TFPI2, HMGA2, KRTAP4-7, KRTAP4-8, KRTAP4-9, MYPN, RPPH1, and SIAE, and a method of screening for a therapeutic agent or a preventive agent therefore, and further vascular endothelial cells or vascular mural cells obtained via differentiation induction from iPS cells formed from a somatic cell of a subject suffered from polycystic kidney disease and having cerebral aneurysm as a complication.
    Type: Application
    Filed: November 7, 2011
    Publication date: August 29, 2013
    Applicant: KYOTO UNIVERSITY
    Inventors: Kenji Osafune, Taro Toyoda, Fumihiko Shiota, Kazuwa Nakao, Masakatsu Sone, Daisuke Taura