Patents by Inventor Youhei Yamagata

Youhei Yamagata 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).

  • Publication number: 20210079354
    Abstract: Provided is a method for efficiently and stably separating cells having a high biological activity from a biological tissue, by using a degrading-enzyme composition, which is prepared by adding an enzyme for degrading a major protein of the biological tissue in an amount determined depending on the composition of the major protein to a predetermined amount of a neutral protease and/or a protease derived from Clostridium sp. According to this method, the type and amount of protein-degrading enzyme to be used for isolating cells can be determined from the composition of a major protein of the biological tissue. Thus, cells having a high biological activity can be efficiently separated while reducing the amount of protein-degrading enzyme to be used.
    Type: Application
    Filed: November 16, 2020
    Publication date: March 18, 2021
    Inventors: Masafumi Goto, Kazutaka Murayama, Youhei Yamagata, Kimiko Watanabe
  • Patent number: 10870833
    Abstract: Provided is a method for efficiently and stably separating cells having a high biological activity from a biological tissue, by using a degrading-enzyme composition, which is prepared by adding an enzyme for degrading a major protein of the biological tissue in an amount determined depending on the composition of the major protein to a predetermined amount of a neutral protease and/or a protease derived from Clostridium sp. According to this method, the type and amount of protein-degrading enzyme to be used for isolating cells can be determined from the composition of a major protein of the biological tissue. Thus, cells having a high biological activity can be efficiently separated while reducing the amount of protein-degrading enzyme to be used.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: December 22, 2020
    Assignees: TOHOKU UNIVERSITY, MEUI SEIKA PHARMA CO., LTD., NATIONAL UNIVERSITY CORPORATION TOKYO UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
    Inventors: Masafumi Goto, Kazutaka Murayama, Youhei Yamagata, Kimiko Watanabe
  • Publication number: 20180362934
    Abstract: Provided is a method for efficiently and stably separating cells having a high biological activity from a biological tissue, by using a degrading-enzyme composition, which is prepared by adding an enzyme for degrading a major protein of the biological tissue in an amount determined depending on the composition of the major protein to a predetermined amount of a neutral protease and/or a protease derived from Clostridium sp. According to this method, the type and amount of protein-degrading enzyme to be used for isolating cells can be determined from the composition of a major protein of the biological tissue. Thus, cells having a high biological activity can be efficiently separated while reducing the amount of protein-degrading enzyme to be used.
    Type: Application
    Filed: August 22, 2018
    Publication date: December 20, 2018
    Inventors: Masafumi Goto, Kazutaka Murayama, Youhei Yamagata, Kimiko Watanabe
  • Patent number: 9354240
    Abstract: The present invention relates to a method for obtaining cells or cell populations having a high biological activity from a biological tissue by enzymatic isolation, and probes for use in the method; more specifically to a method for analyzing a biological tissue, comprising applying two or more probes respectively containing biological-component binding domains through which two or more proteins bind to a predetermined biological component, to an isolated biological tissue, and analyzing binding amounts of the probes to the biological tissue.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: May 31, 2016
    Assignees: TOHOKU UNIVERSITY, MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Youhei Yamagata, Masafumi Goto, Kimiko Watanabe
  • Publication number: 20150368615
    Abstract: Provided is a method for efficiently and stably separating cells having a high biological activity from a biological tissue, by using a degrading-enzyme composition, which is prepared by adding an enzyme for degrading a major protein of the biological tissue in an amount determined depending on the composition of the major protein to a predetermined amount of a neutral protease and/or a protease derived from Clostridium sp. According to this method, the type and amount of protein-degrading enzyme to be used for isolating cells can be determined from the composition of a major protein of the biological tissue. Thus, cells having a high biological activity can be efficiently separated while reducing the amount of protein-degrading enzyme to be used.
    Type: Application
    Filed: January 31, 2014
    Publication date: December 24, 2015
    Inventors: Masafumi Goto, Kazutaka Murayama, Youhei Yamagata, Kimiko Watanabe
  • Publication number: 20130345087
    Abstract: The present invention relates to a method for obtaining cells or cell populations having a high biological activity from a biological tissue by enzymatic isolation, and probes for use in the method; more specifically to a method for analyzing a biological tissue, comprising applying two or more probes respectively containing biological-component binding domains through which two or more proteins bind to a predetermined biological component, to an isolated biological tissue, and analyzing binding amounts of the probes to the biological tissue.
    Type: Application
    Filed: March 15, 2012
    Publication date: December 26, 2013
    Applicants: MEIJI SEIKA PHARMA CO., LTD., TOHOKU UNIVERISTY
    Inventors: Youhei Yamagata, Masafumi Goto, Kimiko Watanabe
  • Publication number: 20110294192
    Abstract: A fusion collagenase in which an affinity tag is added to the carboxyl terminal of a collagenase was expressed as a recombinant protein. It was found that a collagenase having a collagen-binding domain can be selectively collected by purifying the obtained fusion collagenase by affinity chromatography.
    Type: Application
    Filed: November 6, 2009
    Publication date: December 1, 2011
    Applicants: TOHOKU UNIVERSITY, MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Takayoshi Fukushima, Kengo Yokoyama, Koichiro Murashima, Masafumi Goto, Youhei Yamagata