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Methods for producing hepatocytes

  • US 10,683,486 B2
  • Filed: 10/29/2016
  • Issued: 06/16/2020
  • Est. Priority Date: 10/30/2015
  • Status: Active Grant
First Claim
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1. A method for producing hepatocytes, comprising:

  • plating pluripotent human stem cells on a cell culture substrate comprising (i) a first laminin which is laminin-521 and (ii) a second laminin selected from the group consisting of laminin-111 and laminin-221, wherein the laminin-521 and the second laminin are each an intact protein; and

    culturing the pluripotent human stem cells to obtain the hepatocytes;

    wherein the culturing of the pluripotent human stem cells is performed by;

    culturing the cells on the cell culture substrate in an endoderm differentiation medium containing activin A and Wnt3a;

    culturing the cells on the cell culture substrate in a hepatoblast differentiation medium;

    culturing the cells on the cell culture substrate in a hepatocyte maturation medium containing hydrocortisone (HC), hepatocyte growth factor (HGF), and endostatin m (OSM); and

    wherein the resulting hepatocytes exhibit CYP1A2 activity of at least 600,000 RLU/mg/mL or CYP3A activity of at least 800,000 RLU/mg/mL.

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