Stem cell-derived hepatocytes in co-culture and uses thereof
First Claim
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1. A composition comprising:
- a population of human hepatocytes derived from induced human pluripotent stem cells and a population of 3T3-J2 fibroblasts in co-culture (population of hepatocytes in co-culture) in vitro;
a culture substrate, wherein the cell populations are disposed in a micropattern on the 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; and
a layer of material comprising gelatinous protein mixture secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells disposed on the co-culture,wherein the population of hepatocytes in co-culture exhibits a higher level of cytochrome P450 3A4 (CYP3A4) enzyme activity by at least day 22 of culture as compared to a population of human hepatocytes derived from induced pluripotent stem cells and not co-cultured with a population of 3T3-J2 fibroblasts (population of hepatocytes not in co-culture).
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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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Citations
30 Claims
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1. A composition comprising:
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a population of human hepatocytes derived from induced human pluripotent stem cells and a population of 3T3-J2 fibroblasts in co-culture (population of hepatocytes in co-culture) in vitro; a culture substrate, wherein the cell populations are disposed in a micropattern on the 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; anda layer of material comprising gelatinous protein mixture secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells disposed on the co-culture, wherein the population of hepatocytes in co-culture exhibits a higher level of cytochrome P450 3A4 (CYP3A4) enzyme activity by at least day 22 of culture as compared to a population of human hepatocytes derived from induced pluripotent stem cells and not co-cultured with a population of 3T3-J2 fibroblasts (population of hepatocytes not in co-culture). - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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5. A method of culturing a population of hepatocytes derived from induced pluripotent human stem cells in vitro comprising:
- co-culturing the population of hepatocytes derived from induced pluripotent stem cells with a population of 3T3-J2 fibroblasts and maintaining the co-culture for at least about 8 days, 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 cell population, wherein a layer of material comprising gelatinous protein mixture secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells is disposed on the co-culture, and wherein the population of hepatocytes in co-culture exhibits a higher level of cytochrome P450 3A4 (CYP3A4) enzyme activity by at least day 22 of culture as compared to a population of human hepatocytes derived from induced pluripotent stem cells and not co-cultured with a population of 3T3-J2 fibroblasts. - View Dependent Claims (6)
- co-culturing the population of hepatocytes derived from induced pluripotent stem cells with a population of 3T3-J2 fibroblasts and maintaining the co-culture for at least about 8 days, 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
Specification