Drug screening using islet cells and islet cell progenitors from human embryonic stem cells
First Claim
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1. An in vitro method of screening a differentiation factor for its effect on differentiating endoderm cells that are the in vitro progeny of isolated primate pluripotent stem (pPS) cells into pancreatic islet cells, comprisinga) contacting a cell culture comprising gut endoderm cells expressing Sox17, HNF3β
- and HNF4α
that are the in vitro progeny of isolated primate pluripotent stem (pPS) cells with a differentiation factor;
b) observing a change in the gut endoderm cells from step a) associated with the differentiation of an endoderm cell expressing Sox17, HNF3β and
HNF4α
into an islet cell; and
c) correlating the change in the gut endoderm cell with the factor.
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Abstract
This disclosure provides a system for producing pancreatic islet cells from embryonic stem cells. Differentiation is initiated towards endoderm cells, and focused using reagents that promote emergence of islet precursors and mature insulin-secreting cells. High quality populations of islet cells can be produced in commercial quantities for use in research, drug screening, or regenerative medicine.
38 Citations
17 Claims
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1. An in vitro method of screening a differentiation factor for its effect on differentiating endoderm cells that are the in vitro progeny of isolated primate pluripotent stem (pPS) cells into pancreatic islet cells, comprising
a) contacting a cell culture comprising gut endoderm cells expressing Sox17, HNF3β - and HNF4α
that are the in vitro progeny of isolated primate pluripotent stem (pPS) cells with a differentiation factor;b) observing a change in the gut endoderm cells from step a) associated with the differentiation of an endoderm cell expressing Sox17, HNF3β and
HNF4α
into an islet cell; andc) correlating the change in the gut endoderm cell with the factor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- and HNF4α
-
8. An in vitro method of screening a factor chosen from a drug, a solvent, a peptide and a polynucleotide for its effect on primate pancreatic islet cells comprising
a) culturing primate pluripotent stem (pPS) cells in a first medium comprising Activin A to produce cells expressing Sox17, HNF3β - and HNF4α
;b) maturing the cells from a) in a second medium comprising at least one differentiation factor selected from Activin A, cyclopamine, betacellulin, exendin-4, glucagon-like peptide 1 (GLP-1), hepatocyte growth factor (HGF), nicotinamide, insulin-like growth factor 1 (IGF-1), n-butyrate, retinoic acid, growth hormone, placental lactogen, vascular endothelial growth factor (VEGF), insulin-like growth factor II (IGF-II), 3-isobutyl-1-methylxanthine (IBMX), wortmannin, gastrin, cholecystokinin, nerve growth factor (NGF), epidermal growth factor (EGF), keratinocyte growth factor (KGF), platelet-derived growth factor (PDGF), regenerating gene (Reg), and islet neogenesis-associated protein (INGAP), to thereby to obtain primate pancreatic islet cells; c) contacting the primate pancreatic islet cells with a test factor; d) observing a change in the primate pancreatic islet cells after step c); and e) correlating the change in the primate pancreatic islet cells with the factor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
- and HNF4α
Specification