Patents by Inventor Megumu Saito

Megumu Saito 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: 11959103
    Abstract: Provided is a method for inducing pluripotent stem cells to differentiate into somatic cells in a culture medium containing a heparin binding growth factor, the method comprising bringing cells into contact with a conjugate of a laminin E8 fragment and a growth factor binding domain-containing fragment of a heparan sulfate proteoglycan. According to the present invention, pluripotent stem cells can be induced to differentiate into any desired somatic cells in a highly efficient manner.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: April 16, 2024
    Assignees: OSAKA UNIVERSITY, KYOTO UNIVERSITY
    Inventors: Kiyotoshi Sekiguchi, Fumi Ebisu, Hidetoshi Sakurai, Mingming Zhao, Megumu Saito
  • Publication number: 20210363496
    Abstract: A method for easily and efficiently preparing a functional and matured neuromuscular junction (NMJ) in vitro includes producing an artificial neuromuscular junction by transiently expressing MyoD in pluripotent stem cells to induce myogenic differentiation, and culturing the cells obtained by transiently expressing MyoD in pluripotent stem cells to induce myogenic differentiation in a medium containing a neurotrophic factor to induce neuronal differentiation.
    Type: Application
    Filed: October 17, 2018
    Publication date: November 25, 2021
    Inventors: Megumu SAITO, Michiko YOSHIDA, Chuang-Yu LIN
  • Patent number: 10890750
    Abstract: An observation system includes a microscope optical system, an image pickup unit, an image pickup control unit, a detection unit, and an observation control unit. The image pickup unit is configured to take an image of a field-of-view range of the microscope optical system. The image pickup control unit is configured to cause the image pickup unit to take images of an observation sample in the field-of-view range at a plurality of focal positions and generate detection images. The detection unit is configured to detect a three-dimensional position of an observation target object in the observation sample from the detection images. The observation control unit is configured to fit the field-of-view range of the microscope optical system to the three-dimensional position.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: January 12, 2021
    Assignees: Sony Corporation, Kyoto University
    Inventors: Suguru Dowaki, Shiori Oshima, Eriko Matsui, Tatsutoshi Nakahata, Megumu Saito, Akira Niwa
  • Patent number: 10669529
    Abstract: Provided is a method for producing vascular endothelial cells from pluripotent stem cells, the method comprising the following steps (i) to (iii): (i) a step of culturing pluripotent stem cells in a culture medium comprising a BMP, on a culture vessel coated with a first matrix, to produce mesodermal progenitor cells; (ii) a step of dissociating the resulting cells into single cells; and (iii) a step of culturing the resulting cells in a culture medium comprising VEGF, on a culture vessel coated with a second matrix selected from the group consisting of laminin-411 or a fragment thereof, laminin-511 or a fragment thereof, Matrigel, type IV collagen and fibronectin.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: June 2, 2020
    Assignees: Kyoto University, Osaka University
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Akira Niwa, Ryo Ota, Kiyotoshi Sekiguchi
  • Publication number: 20190276804
    Abstract: Provided is a method for inducing pluripotent stem cells to differentiate into somatic cells in a culture medium containing a heparin binding growth factor, the method comprising bringing cells into contact with a conjugate of a laminin E8 fragment and a growth factor binding domain-containing fragment of a heparan sulfate proteoglycan. According to the present invention, pluripotent stem cells can be induced to differentiate into any desired somatic cells in a highly efficient manner.
    Type: Application
    Filed: November 9, 2017
    Publication date: September 12, 2019
    Applicants: OSAKA UNIVERSITY, KYOTO UNIVERSITY
    Inventors: Kiyotoshi SEKIGUCHI, Fumi EBISU, Hidetoshi SAKURAI, Mingming ZHAO, Megumu SAITO
  • Publication number: 20180208893
    Abstract: Provided is a method for producing vascular endothelial cells from pluripotent stem cells, the method comprising the following steps (i) to (iii): (i) a step of culturing pluripotent stem cells in a culture medium comprising a BMP, on a culture vessel coated with a first matrix, to produce mesodermal progenitor cells; (ii) a step of dissociating the resulting cells into single cells; and (iii) a step of culturing the resulting cells in a culture medium comprising VEGF, on a culture vessel coated with a second matrix selected from the group consisting of laminin-411 or a fragment thereof, laminin-511 or a fragment thereof, Matrigel, type IV collagen and fibronectin.
    Type: Application
    Filed: July 14, 2016
    Publication date: July 26, 2018
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Akira Niwa, Ryo Ota, Kiyotoshi Sekiguchi
  • Publication number: 20170351081
    Abstract: An observation system includes a microscope optical system, an image pickup unit, an image pickup control unit, a detection unit, and an observation control unit. The image pickup unit is configured to take an image of a field-of-view range of the microscope optical system. The image pickup control unit is configured to cause the image pickup unit to take images of an observation sample in the field-of-view range at a plurality of focal positions and generate detection images. The detection unit is configured to detect a three-dimensional position of an observation target object in the observation sample from the detection images. The observation control unit is configured to fit the field-of-view range of the microscope optical system to the three-dimensional position.
    Type: Application
    Filed: August 23, 2017
    Publication date: December 7, 2017
    Inventors: Suguru DOWAKI, Shiori OSHIMA, Eriko MATSUI, Tatsutoshi NAKAHATA, Megumu SAITO, Akira NIWA
  • Patent number: 9753267
    Abstract: An observation system includes a microscope optical system, an image pickup unit, an image pickup control unit, a detection unit, and an observation control unit. The image pickup unit is configured to take an image of a field-of-view range of the microscope optical system. The image pickup control unit is configured to cause the image pickup unit to take images of an observation sample in the field-of-view range at a plurality of focal positions and generate detection images. The detection unit is configured to detect a three-dimensional position of an observation target object in the observation sample from the detection images. The observation control unit is configured to fit the field-of-view range of the microscope optical system to the three-dimensional position.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: September 5, 2017
    Assignees: Sony Corporation, Kyoto University
    Inventors: Suguru Dowaki, Shiori Oshima, Eriko Matsui, Tatsutoshi Nakahata, Megumu Saito, Akira Niwa
  • Publication number: 20170130202
    Abstract: The present invention aims to provide a novel method for producing mesodermal cells, and a graft material containing mesodermal cells obtained by this method. The present invention also aims to provide a novel method for producing hematopoietic cells, and a therapeutic agent for blood diseases containing a hematopoietic cell obtained by the method. These objects can be achieved by providing a novel method for producing mesodermal cells and/or hematopoietic cells, which method includes culturing pluripotent stem cells in contact with a three-dimensional support.
    Type: Application
    Filed: June 24, 2015
    Publication date: May 11, 2017
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Akira Niwa, Yoshinori Sugimine
  • Patent number: 9557321
    Abstract: The present invention provides a method for screening drugs for suppressing inflammasome activity, using macrophages derived from induced pluripotent stem cells (iPS cells) having mutant NLRP3 gene.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: January 31, 2017
    Assignee: KYOTO UNIVERSITY
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Takayuki Tanaka, Shinya Yamanaka
  • Patent number: 9499789
    Abstract: A dendritic cell is produced from pluripotent stem cells by culturing pluripotent stem cells by the following steps: (1) performing adherent culture in a medium which comprises a BMP family protein but does not comprise serum; (2) performing adherent culture in a medium which comprises VEGF but does not comprise serum; (3) performing adherent culture in a medium which comprises a hematopoietic factor but does not comprise serum; and (4) performing suspension culture in a medium which does not comprise serum.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: November 22, 2016
    Assignee: KYOTO UNIVERSITY
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Akira Niwa, Masakatsu Yanagimachi
  • Publication number: 20140333723
    Abstract: An observation system includes a microscope optical system, an image pickup unit, an image pickup control unit, a detection unit, and an observation control unit. The image pickup unit is configured to take an image of a field-of-view range of the microscope optical system. The image pickup control unit is configured to cause the image pickup unit to take images of an observation sample in the field-of-view range at a plurality of focal positions and generate detection images. The detection unit is configured to detect a three-dimensional position of an observation target object in the observation sample from the detection images. The observation control unit is configured to fit the field-of-view range of the microscope optical system to the three-dimensional position.
    Type: Application
    Filed: April 30, 2014
    Publication date: November 13, 2014
    Applicants: Sony Corporation, Kyoto University
    Inventors: Suguru DOWAKI, Shiori OSHIMA, Eriko MATSUI, Tatsutoshi NAKAHATA, Megumu SAITO, Akira NIWA
  • Patent number: 8736824
    Abstract: A blood analysis apparatus includes an analysis section. The analysis section is configured to compare a measurement spectrum obtained regarding red blood cells with a standard spectrum of heme, biliverdin, and bilirubin, and cause the measurement spectrum to belong to any one of the standard spectra.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: May 27, 2014
    Assignees: Sony Corporation, Kyoto University
    Inventors: Eriko Matsui, Suguru Dowaki, Hirokazu Tatsuta, Takeshi Kunihiro, Akira Niwa, Megumu Saito, Tatsutoshi Nakahata
  • Publication number: 20130330822
    Abstract: A dendritic cell is produced from pluripotent stem cells by culturing pluripotent stem cells by the following steps: (1) performing adherent culture in a medium which comprises a BMP family protein but does not comprise serum; (2) performing adherent culture in a medium which comprises VEGF but does not comprise serum; (3) performing adherent culture in a medium which comprises a hematopoietic factor but does not comprise serum; and (4) performing suspension culture in a medium which does not comprise serum.
    Type: Application
    Filed: February 23, 2012
    Publication date: December 12, 2013
    Applicant: KYOTO UNIVERSITY
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Akira Niwa, Masakatsu Yanagimachi
  • Publication number: 20130273588
    Abstract: The present invention provides a method for screening drugs for suppressing inflammasome activity, using macrophages derived from induced pluripotent stem cells (iPS cells) having mutant NLRP3 gene.
    Type: Application
    Filed: November 17, 2011
    Publication date: October 17, 2013
    Applicant: KYOTO UNIVERSITY
    Inventors: Tatsutoshi Nakahata, Megumu Saito, Takayuki Tanaka, Shinya Yamanaka
  • Publication number: 20130038860
    Abstract: A blood analysis apparatus includes an analysis section. The analysis section is configured to compare a measurement spectrum obtained regarding red blood cells with a standard spectrum of heme, biliverdin, and bilirubin, and cause the measurement spectrum to belong to any one of the standard spectra.
    Type: Application
    Filed: July 30, 2012
    Publication date: February 14, 2013
    Applicants: KYOTO UNIVERSITY, SONY CORPORATION
    Inventors: Eriko Matsui, Suguru Dowaki, Hirokazu Tatsuta, Takeshi Kunihiro, Akira Niwa, Megumu Saito, Tatsutoshi Nakahata