INNERVATED INTESTINE ON CHIP
The present invention relates to a combination of cell culture systems and microfluidic fluidic systems for use in providing a human innervated Intestine On-Chip. More specifically, in some embodiments, a microfluidic chip containing intestinal epithelial cells co-cultured with intestinal endothelial cells or intestinal muscle cells, or both, in the presence of induced neural crest cells may find use in providing an innervated Intestine-On-Chip. In some embodiments, an innervated Intestine On-Chip may be used for identifying (testing) therapeutic compounds for use in treating gastrointestinal disorders or diseases.
1 - 11 . (canceled)
12 . A method of culturing cells, comprising: a) providing a microfluidic device comprising a membrane, said membrane comprising a first side and a second side; b) seeding a population of induced pluripotent stem cells (iPSC)-derived cortical neurons on said first side and brain endothelial cells on said second side so as to create seeded cells, wherein said cortical neurons comprise a mixture of glutamatergic neurons and GABAergic neurons; c) exposing at least some of said seeded cells to a flow of culture fluid for a period of time; and d) culturing said seeded cells under conditions such that said endothelial cells foam a cell barrier.
13 . The method of claim 12 , further comprising a step of seeding said first side of said membrane with additional cells, said additional cell comprising astrocyte cells and pericyte cells.
14 . The method of claim 12 , wherein said a mixture of glutamatergic neurons and GABAergic neurons comprises approximately 0.8 million cells per milliliter of seeding solution.
15 . The method of claim 12 , wherein said glutamatergic neurons range from 60-90% of said cortical neurons.
16 . The method of claim 12 , wherein said cortical neurons comprises approximately 80% vesicular glutamate transporter 1 (VGLUT1)+ cells.
17 . The method of claim 12 , wherein said GABAergic neurons range from 30-40% of said cortical neurons.
18 . The method of claim 12 , wherein said cortical neurons comprise approximately 30-40% vesicular GABA transporter (VGAT)+cells.
19 . The method of claim 12 , wherein said cortical neurons comprises neurons having terminal bulbs in contact with endothelial cells.
20 . The method of claim 13 , wherein said human iPS-derived cortical neurons are in direct contact with astrocytes and pericytes.
21 . The method of claim 20 , further comprising seeding said first side of said membrane with microglial cells.
22 . The method of claim 12 , wherein said endothelial cells are human iPSC-derived brain microvascular endothelial cells.
23 . The method of claim 12 , wherein said cell barrier exhibits a level of leakage of small molecules from the second side to the first side of said membrane.
24 . The method of claim 23 , wherein said leakage level is less than the level of leakage of a cell barrier in a microfluidic device seeded with brain endothelial cells on said second side and either glutamatergic neurons or GABAergic neurons alone on said first side.
25 . The method of claim 13 , further comprising the step of inducing an inflammatory condition in at least one cell type.
26 . The method of claim 25 , wherein said inflamed cell type comprises astrocytes.
27 . The method of claim 25 , wherein said inflammatory condition is induced by flowing a solution comprising TNF-α into said bottom channel.
28 . The method of claim 25 , wherein said inflammatory condition increases cell barrier permeability.
29 . A method of culturing cells, comprising: a) providing a microfluidic device comprising a membrane, said membrane comprising a first side and a second side; b) seeding a population of neural crest cells derived from induced pluripotent stem cells (iPSC) on said first side and brain endothelial cells on said second side so as to create seeded cells; c) exposing at least some of said seeded cells to a flow of culture fluid for a period of time; and d) culturing said seeded cells under conditions such that at least a portion of said neural crest cells differentiate into a population of cortical neurons.
30 . The method of claim 29 , wherein said population of neural crest cells comprise HNK1+/p75+ double positive cells.
31 . The method of claim 29 , wherein said cortical neurons comprise a mixture of glutamatergic neurons and GABAergic neurons.