Methods and systems for converting precursor cells into gastric tissues through directed differentiation
First Claim
Patent Images
1. A method of inducing formation of a gastric tissue, comprising the steps of:
- a) contacting a culture containing a mammalian definitive endoderm cell with an FGF signaling pathway activator, a Wnt signaling pathway activator, and a BMP inhibitor for at least two days or for a period of time sufficient to form SOX2+foregut cells;
b) contacting said SOX2+foregut cells of step (a) with retinoic acid for a period of time sufficient to form three-dimensional foregut spheroids, wherein said spheroids express SOX2, PDX1, HNF1β
, and HNF6;
c) contacting said three-dimensional foregut spheroids of step (b) with retinoic acid, EGF, and a BMP inhibitor for a period of time sufficient for formation of a gastric organoid, wherein said gastric organoid is characterized by expression of MUC5AC, gastrin, ghrelin, 5-HT, and ChrA and the presence of cell types selected from one or more of antral mucous cells and endocrine cells.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed are methods of inducing formation of a gastric cells and/or a gastric tissue, such as in the form of a gastric organoid. The formation of gastric cells and/or tissue may be carried out by the activating and/or inhibiting of one or more signaling pathways within a precursor cell. Also disclosed are methods for using the disclosed gastric cells, gastric tissues, and/or gastric organoids derived from precursor cells.
169 Citations
14 Claims
-
1. A method of inducing formation of a gastric tissue, comprising the steps of:
-
a) contacting a culture containing a mammalian definitive endoderm cell with an FGF signaling pathway activator, a Wnt signaling pathway activator, and a BMP inhibitor for at least two days or for a period of time sufficient to form SOX2+foregut cells; b) contacting said SOX2+foregut cells of step (a) with retinoic acid for a period of time sufficient to form three-dimensional foregut spheroids, wherein said spheroids express SOX2, PDX1, HNF1β
, and HNF6;c) contacting said three-dimensional foregut spheroids of step (b) with retinoic acid, EGF, and a BMP inhibitor for a period of time sufficient for formation of a gastric organoid, wherein said gastric organoid is characterized by expression of MUC5AC, gastrin, ghrelin, 5-HT, and ChrA and the presence of cell types selected from one or more of antral mucous cells and endocrine cells. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification