Stem cell-derived hepatocytes in co-culture and uses thereof
First Claim
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1. A method of determining the hepatotoxicity of a test compound, the method comprising:
- obtaining a co-culture of a population of human hepatocytes derived from induced human pluripotent stem cells and a population of 3T3-J2 fibroblasts in vitro with a layer of material comprising a gelatinous protein mixture secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells disposed on the coculture;
contacting the co-culture with the test compound;
maintaining the co-culture for a time and under conditions sufficient to allow an effect of the test compound on the human hepatocytes;
measuring at least one indicator of hepatic function in the co-culture to obtain a test measurement, wherein the at least one indicator of hepatic function is albumin production, urea production, or any combination thereof; and
comparing the test measurement to a control measurement from the co-culture before contact with the test compound, wherein the test compound is hepatotoxic if (a) albumin production is significantly decreased in test measurements as compared to the control measurement and/or (b) urea production is significantly decreased in test measurements as compared to the control measurement,wherein the cell populations are disposed in a micropattern on a culture substrate and the micropattern comprises a predetermined two-dimensional pattern of multiple microdots, the micropattern defined by a microdot diameter and a center-to-center spacing between each of any two neighboring microdots, wherein each microdot has a diameter of about 500 μ
m and the center-to-center spacing between each of any two neighboring microdots is about 1200 μ
m, and the microdots comprise the human hepatocytes derived from induced human pluripotent stem cells and the space between the microdots comprises the 3T3-J2 fibroblast population.
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Abstract
The present disclosure provides co-cultures of human pluripotent stem cell derived hepatocytes and at least one non-parenchymal cell population in vitro, methods of preparing the co-cultures and methods of using the co-cultures for high throughput screening and evaluation of drug candidates. The stem cell derived hepatocyte co-culture system provides an in vitro model in which cell viability and relatively mature hepatocyte phenotype of stem cell derived hepatocytes are maintained for extended periods relative to conventional monoculture.
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3 Claims
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1. A method of determining the hepatotoxicity of a test compound, the method comprising:
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obtaining a co-culture of a population of human hepatocytes derived from induced human pluripotent stem cells and a population of 3T3-J2 fibroblasts in vitro with a layer of material comprising a gelatinous protein mixture secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells disposed on the coculture; contacting the co-culture with the test compound; maintaining the co-culture for a time and under conditions sufficient to allow an effect of the test compound on the human hepatocytes; measuring at least one indicator of hepatic function in the co-culture to obtain a test measurement, wherein the at least one indicator of hepatic function is albumin production, urea production, or any combination thereof; and comparing the test measurement to a control measurement from the co-culture before contact with the test compound, wherein the test compound is hepatotoxic if (a) albumin production is significantly decreased in test measurements as compared to the control measurement and/or (b) urea production is significantly decreased in test measurements as compared to the control measurement, wherein the cell populations are disposed in a micropattern on a culture substrate and the micropattern comprises a predetermined two-dimensional pattern of multiple microdots, the micropattern defined by a microdot diameter and a center-to-center spacing between each of any two neighboring microdots, wherein each microdot has a diameter of about 500 μ
m and the center-to-center spacing between each of any two neighboring microdots is about 1200 μ
m, and the microdots comprise the human hepatocytes derived from induced human pluripotent stem cells and the space between the microdots comprises the 3T3-J2 fibroblast population.- View Dependent Claims (2, 3)
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Specification