Patents by Inventor Sravanti KUSUMA

Sravanti KUSUMA 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: 20220298473
    Abstract: Low oxygen tension is a critical regulator of the developing or regenerating vasculature. The present invention is based on the determination that low oxygen tension during early stages of early vascular cell (EVC) derivation induces endothelial commitment and maturation of pluripotent stem cells. Inhibition of reactive oxygen species generation during the early stages of differentiation abrogates the endothelial inductive effects of the low oxygen environments. Methods of generating various types of cells from pluripotent stem cells (PSCs) are described, as well as compositions and methods of use thereof. In particular, generation of EVCs, bicellular vascular populations, early endothelial cells (ECs) and pericytes via culture in a low oxygen environment is described.
    Type: Application
    Filed: June 3, 2022
    Publication date: September 22, 2022
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Patent number: 11352606
    Abstract: Low oxygen tension is a critical regulator of the developing or regenerating vasculature. The present invention is based on the determination that low oxygen tension during early stages of early vascular cell (EVC) derivation induces endothelial commitment and maturation of pluripotent stem cells. Inhibition of reactive oxygen species generation during the early stages of differentiation abrogates the endothelial inductive effects of the low oxygen environments. Methods of generating various types of cells from pluripotent stem cells (PSCs) are described, as well as compositions and methods of use thereof. In particular, generation of EVCs, bicellular vascular populations, early endothelial cells (ECs) and pericytes via culture in a low oxygen environment is described.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: June 7, 2022
    Assignee: The Johns Hopkins University
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Patent number: 11060064
    Abstract: The present invention relates to the area of in vitro cell populations useful for generating vascular networks in vitro and are suitable for use in vivo for regeneration of vascular tissue. In some embodiments, the bipotent cell population of the present invention comprise endothelial cells and pericytes that express vascular endothelial cadherin and are 95% or more positive for CD105 and CD146, and which work syergistically to recreate vascular tissues in vitro.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: July 13, 2021
    Assignee: The Johns Hopkins University
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20180298329
    Abstract: The present invention is in the area of pluripotent stem cells and more particularly deals with a method to differentiate a vascular network from stem cells.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 18, 2018
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20180171291
    Abstract: This invention relates, e.g., to a method for differentiating mammalian (e.g., human) pluripotent stem cells (PSCs) into endothelial cells (ECs) in vitro, by plating a single-cell suspension of PSCs onto a suitable surface such as type IV collagen and culturing the cells with VEGF after which ECs can be harvested. A preferred embodiment of the method first cultures the cells without VEGF and then sequentially cultures the cells with VEGF. Differentiation can be enhanced by adding an inhibitor of transforming growth factor ? to the culturing with VEGF.
    Type: Application
    Filed: February 12, 2018
    Publication date: June 21, 2018
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Patent number: 9994825
    Abstract: Described are methods for differentiating mammalian pluripotent stem cells towards a population of cells that can self-organize into vascular networks in vitro when harvested cells of the present invention are embedded into a hydrophilic matrix such as a hydrogel.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: June 12, 2018
    Assignee: The Johns Hopkins University
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20170029772
    Abstract: The present invention is in the area of pluripotent stem cells and more particularly deals with a method to differentiate a vascular network from stem cells.
    Type: Application
    Filed: March 17, 2014
    Publication date: February 2, 2017
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20170009204
    Abstract: Low oxygen tension is a critical regulator of the developing or regenerating vasculature. The present invention is based on the determination that low oxygen tension during early stages of early vascular cell (EVC) derivation induces endothelial commitment and maturation of pluripotent stem cells. Inhibition of reactive oxygen species generation during the early stages of differentiation abrogates the endothelial inductive effects of the low oxygen environments. Methods of generating various types of cells from pluripotent stem cells (PSCs) are described, as well as compositions and methods of use thereof. In particular, generation of EVCs, bicellular vascular populations, early endothelial cells (ECs) and pericytes via culture in a low oxygen environment is described.
    Type: Application
    Filed: March 17, 2014
    Publication date: January 12, 2017
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Patent number: 9506037
    Abstract: A bicellular vascular population derived from human pluripotent stem cells (hPSCs) undergoes morphogenesis and assembly in a synthetic hydrogel. It is shown that hPSCs can be induced to co-differentiate into early vascular cells (EVCs) in a clinically-relevant strategy dependent upon Notch activation. These EVCs mature into ECs and pericytes, and self-organize to form vascular networks in an engineered matrix. Upon in vivo implantation, multicellular human vascular networks are functionally perfused. Thus, a derived bicellular population is exploited for its intrinsic self-assembly capability to create functional microvasculature in a deliverable matrix.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 29, 2016
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20150017724
    Abstract: This invention relates, e.g., to a method for differentiating mammalian (e.g., human) pluripotent stem cells (PSCs) into endothelial cells (ECs) in vitro, by plating a single-cell suspension of PSCs onto a suitable surface such as type IV collagen and culturing the cells with VEGF after which ECs can be harvested. A preferred embodiment of the method first cultures the cells without VEGF and then sequentially cultures the cells with VEGF. Differentiation can be enhanced by adding an inhibitor of transforming growth factor ? to the culturing with VEGF.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Inventors: Sharon Gerecht, Sravanti Kusuma
  • Publication number: 20140273220
    Abstract: A bicellular vascular population derived from human pluripotent stem cells (hPSCs) undergoes morphogenesis and assembly in a synthetic hydrogel. It is shown that hPSCs can be induced to co-differentiate into early vascular cells (EVCs) in a clinically-relevant strategy dependent upon Notch activation. These EVCs mature into ECs and pericytes, and self-organize to form vascular networks in an engineered matrix. Upon in vivo implantation, multicellular human vascular networks are functionally perfused. Thus, a derived bicellular population is exploited for its intrinsic self-assembly capability to create functional microvasculature in a deliverable matrix.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Sharon GERECHT, Sravanti KUSUMA