Abstract: Disclosed herein are cell cultures comprising PDX1-positive endoderm cells and methods of producing the same. Also disclosed herein are cell populations comprising substantially purified PDX1-positive endoderm cells as well as methods for enriching, isolating and purifying PDX1-positive endoderm cells from other cell types. Methods of identifying differentiation factors capable of promoting the differentiation of endoderm cells, such as PDX1-positive foregut endoderm cells and PDX1-negative definitive endoderm cells, are also disclosed.
Type:
Grant
Filed:
October 31, 2018
Date of Patent:
November 5, 2019
Assignee:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Susan Eliazer, Emmanuel E. Baetge
Abstract: Disclosed are devices and methods for transplanting cells, such as pancreatic endoderm cells, into a host. The devices include a non-woven fabric external to a cell-excluding membrane, and the non-woven fabric and/or cell-excluding membrane can be perforated. Treatment of the host with immunosuppressive reagents, required to inhibit allograft rejection due to perforations in the cell delivery device, does not compromise maturation or function of transplanted pancreatic endoderm cells.
Type:
Application
Filed:
November 10, 2016
Publication date:
October 31, 2019
Applicant:
Viacyte, Inc.
Inventors:
Kevin Allen D'Amour, Evert Kroon, Michael Scott, Laura Martinson, Craig McGreevy
Abstract: A human immature endocrine cell population and methods for making an immature endocrine cell population are provided. Specifically, immature beta cells and methods for production of immature beta cells are described. Immature beta cells co-express INS and NKX6.1 and are uni-potent and thereby develop into mature beta cells when implanted in vivo. The mature beta cells in vivo are capable of producing insulin in response to glucose stimulation.
Abstract: Disclosed herein are cell cultures comprising definitive endoderm cells and methods of producing the same. Also disclosed herein are cell populations comprising substantially purified definitive endoderm cells as well as methods for enriching, isolating and purifying definitive endoderm cells from other cell types.
Type:
Grant
Filed:
February 13, 2017
Date of Patent:
September 24, 2019
Assignee:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Emmanuel E. Baetge
Abstract: Disclosed herein are universal donor stem cells and cells derived therefrom and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming allogeneic immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor cells disclosed herein are pancreatic endoderm cells that do not express one or more MHC-Class I cell-surface proteins and whose expression of at least one NK activating ligand is disrupted or inhibited.
Type:
Grant
Filed:
July 12, 2017
Date of Patent:
August 27, 2019
Assignee:
ViaCyte, Inc.
Inventors:
Anindita Bhoumik, Alan D. Agulnick, Kevin Allen D'Amour
Abstract: Disclosed herein are universal donor stem cells and cells derived therefrom and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming allogeneic immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor cells disclosed herein are pancreatic endoderm cells that do not express one or more MHC-Class I cell-surface proteins and whose expression of at least one NK activating ligand is disrupted or inhibited.
Type:
Application
Filed:
May 3, 2019
Publication date:
August 22, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Anindita Bhoumik, Alan D. Agulnick, Kevin Allen D'Amour
Abstract: A human immature endocrine cell population and methods for making an immature endocrine cell population are provided. Specifically, immature beta cells and methods for production of immature beta cells are described. Immature beta cells co-express INS and NKX6.1 and are uni-potent and thereby develop into mature beta cells when implanted in vivo. The mature beta cells in vivo are capable of producing insulin in response to glucose stimulation.
Abstract: The present invention relates to methods for encapsulating pancreatic progenitors in a biocompatible semi-permeable encapsulating device. The present invention also relates to production of human insulin in a mammal in response to glucose stimulation.
Type:
Application
Filed:
March 11, 2019
Publication date:
July 4, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Laura Martinson, Chad Green, Evert Kroon, Emmanuel Edward Baetge
Abstract: Disclosed herein are cell cultures comprising dorsal and/or ventral PDX1-positive foregut endoderm cells and methods of producing the same. Also disclosed herein are cell populations comprising substantially purified dorsal and/or ventral PDX1-positive foregut endoderm cells as well as methods for enriching, isolating and purifying dorsal and/or ventral PDX1-positive foregut endoderm cells from other cell types. Methods of identifying differentiation factors capable of promoting the differentiation of dorsal and/or ventral PDX1-positive foregut endoderm cells, are also disclosed.
Type:
Application
Filed:
November 26, 2018
Publication date:
May 16, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Susan Eliazer, Emmanuel E. Baetge
Abstract: The present invention relates to a perforated semi-permeable device comprising, human pancreatic endocrine cells or human PDX1-positive pancreatic endoderm cells contained within a semi-permeable membrane comprising a synthetic material, wherein the synthetic material is polysulfone (PSF), nano-fiber mats, polyimide, tetrafluoroethylene/polytetrafluoroethylene (PTFE), expanded polytetrafluoroethylene (ePTFE), polyacrylonitrile, polyethersulfone, acrylic resin, cellulose acetate, cellulose nitrate, polyamide, or hydroxylpropyl methyl cellulose (HPMC), a cell encapsulation chamber, and at least one seal that is within the cell encapsulation chamber.
Type:
Grant
Filed:
August 16, 2017
Date of Patent:
April 30, 2019
Assignee:
ViaCyte, Inc.
Inventors:
Laura Martinson, Chad Green, Evert Kroon, Emmanuel Edward Baetge
Abstract: The present disclosure relates to compositions and methods comprising cell surface markers for hES-derived cells, in particular, endoderm lineage cells including pancreatic endoderm-type cells, derived from hES cells.
Abstract: The present invention provides compositions and methods for the culture and maintenance of pluripotent stem cells. More particularly, the present invention provides for compositions and methods for culturing, maintaining, growing and stabilizing primate pluripotent stem cells in a feeder-free defined media further comprising human serum, or a soluble attachment component of the human serum, for promoting cell attachment.
Abstract: Disclosed herein are cell cultures comprising PDX1-positive endoderm cells and methods of producing the same. Also disclosed herein are cell populations comprising substantially purified PDX1-positive endoderm cells as well as methods for enriching, isolating and purifying PDX1-positive endoderm cells from other cell types. Methods of identifying differentiation factors capable of promoting the differentiation of endoderm cells, such as PDX1-positive foregut endoderm cells and PDX1-negative definitive endoderm cells, are also disclosed.
Type:
Application
Filed:
October 31, 2018
Publication date:
February 21, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Susan Eliazer, Emmanuel E. Baetge
Abstract: This disclosure relates to compositions comprising human preprimitive streak cells and/or human mesendoderm cells as well as methods for their production. Additionally, disclosed herein are methods of identifying factors useful in the further differentiation of preprimitive streak and mesendoderm cell types.
Type:
Application
Filed:
October 2, 2018
Publication date:
January 31, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Susan Eliazer, Evert Kroon, Emmanuel E. Baetge
Abstract: Disclosed herein are universal donor stem cells and cells derived therefrom and related methods of their use and production. The universal donor stem cells disclosed herein are useful for overcoming allogeneic immune rejection in cell-based transplantation therapies. In certain embodiments, the universal donor cells disclosed herein are pancreatic endoderm cells that do not express one or more MHC-Class I cell-surface proteins and whose expression of at least one NK activating ligand is disrupted or inhibited.
Type:
Application
Filed:
July 12, 2017
Publication date:
January 17, 2019
Applicant:
ViaCyte, Inc.
Inventors:
Anindita Bhoumik, Alan D. Agulnick, Kevin Allen D'Amour
Abstract: This disclosure relates to compositions comprising human preprimitive streak cells and/or human mesendoderm cells as well as methods for their production. Additionally, disclosed herein are methods of identifying factors useful in the further differentiation of preprimitive streak and mesendoderm cell types.
Type:
Grant
Filed:
July 19, 2017
Date of Patent:
January 15, 2019
Assignee:
ViaCyte, Inc.
Inventors:
Kevin Allen D'Amour, Alan D. Agulnick, Susan Eliazer, Evert Kroon, Emmanuel E. Baetge
Abstract: The present invention relates to methods for production of undifferentiated or differentiated embryonic stem cell aggregate suspension cultures from undifferentiated or differentiated embryonic stem cell single cell suspensions and methods of differentiation thereof.
Abstract: Disclosed herein are cell culture compositions, for example, pancreatic cell culture compositions, derived from dedifferentiated human reprogrammed pluripotent stem cells, such as induced pluripotent stem (iPS) cells, and methods for producing and using such cell culture compositions.
Type:
Application
Filed:
April 30, 2018
Publication date:
November 8, 2018
Applicant:
ViaCyte, Inc.
Inventors:
Alan D. Agulnick, Olivia Kelly, Yuki Ohi, Allan Robins, Thomas Schulz
Abstract: Disclosed herein are methods of producing pancreatic hormone-expressing cells by first differentiating pluripotent cells in cell culture so as to produce endodermal cells, the endodermal cells being competent to further differentiate into hormone-expressing cells capable of secreting at least one pancreatic hormone in response to a physiological signal, and then, transplanting the cultured endodermal cells into an organism, such as an organism in need of an endocrine cell therapy.
Type:
Application
Filed:
April 24, 2018
Publication date:
August 23, 2018
Applicant:
ViaCyte, Inc.
Inventors:
Laura Martinson, Evert Kroon, Kevin D'Amour, Emmanuel Edward Baetge