Neural Cell Populations from Primate Pluripotent Stem Cells

• US 20090291495A1
• Filed: 06/03/2009
• Published: 11/26/2009
• Est. Priority Date: 01/11/2000
• Status: Active Grant

• Current Assignee: Asterias Biotherapeutics Incorporated (Lineage Cell Therapeutics, Inc.)
• Original Assignee: Geron Corporation
• Inventors: Carpenter, Melissa K., Thies, R. Scott
• Granted Patent: US 8,252,586 B2
• Time in Patent Office: Days
• US Class Current: 435/366
• CPC Class Codes: A61K 35/12 Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells vaccines or medicinal preparations containing antigens or antibodies A61K39/00
• CPC Class Codes: C12N 15/1034 Isolating an individual clone by screening libraries
• CPC Class Codes: C12N 15/1072 Differential gene expression library synthesis, e.g. subtracted libraries, differential screening
• CPC Class Codes: C12N 15/1096 cDNA Synthesis; Subtracted cDNA library construction, e.g. RT, RT-PCR
• CPC Class Codes: C12N 2500/14 Calcium; Ca chelators; Calcitonin
• CPC Class Codes: C12N 2500/30 Organic components metal chelators C12N2500/10; calcitonin C12N2500/14; transferrin C12N2500/24
• CPC Class Codes: C12N 2500/38 Vitamins
• CPC Class Codes: C12N 2500/44 Thiols, e.g. mercaptoethanol
• CPC Class Codes: C12N 2500/62 DMSO
• CPC Class Codes: C12N 2501/105 Insulin-like growth factors [IGF]
• CPC Class Codes: C12N 2501/13 Nerve growth factor [NGF]; Brain-derived neurotrophic factor [BDNF]; Cilliary neurotrophic factor [CNTF]; Glial-derived neurotrophic factor [GDNF]; Neurotrophins [NT]; Neuregulins
• CPC Class Codes: C12N 2501/155 Bone morphogenic proteins [BMP]; Osteogenins; Osteogenic factor; Bone inducing factor
• CPC Class Codes: C12N 2501/385 of the family of the retinoic acid recptor, e.g. RAR, RXR; Peroxisome proliferator-activated receptor [PPAR]
• CPC Class Codes: C12N 2501/39 Steroid hormones
• CPC Class Codes: C12N 2501/999 Small molecules not provided for elsewhere
• CPC Class Codes: C12N 2502/13 connective tissue cells; generic mesenchyme cells, e.g. so-called "embryonic fibroblasts"
• CPC Class Codes: C12N 2502/99 genetically modified cells
• CPC Class Codes: C12N 2503/02 Drug screening
• CPC Class Codes: C12N 2510/00 Genetically modified cells
• CPC Class Codes: C12N 2510/04 Immortalised cells
• CPC Class Codes: C12N 2533/90 : Substrates of biological origin, e.g. extracellular matrix, decellularised tissue
• CPC Class Codes: C12N 5/0606 : Pluripotent embryonic cells, e.g. embryonic stem cells [ES] embryonic germ cells C12N5/0611, induced pluripotent stem cells C12N5/0696

Abstract

This invention provides a system for efficiently producing differentiated cells from pluripotent cells, such as human embryonic stem cells. Rather than permitting the cells to form embryoid bodies according to established techniques, differentiation is effected directly in monolayer culture on a suitable solid surface. The cells are either plated directly onto a differentiation-promoting surface, or grown initially on the solid surface in the absence of feeder cells and then exchanged into a medium that assists in the differentiation process. The solid surface and the culture medium can be chosen to direct differentiation down a particular pathway, generating a cell population that is remarkably uniform. The methodology is well adapted to bulk production of committed precursor and terminally differentiated cells for use in drug screening or regenerative medicine.

Claims

1-14. -14. (canceled)

15. An embryoid body free system for generating neural cells comprising a) a first in vitro population of cells comprising primate pluripotent stem cells;

and b) a second in vitro cell population comprising progeny of a portion of the first population of cells, wherein the progeny express β

-tubulin and GABA.

16. The system of claim 15, wherein primate pluripotent stem cells are human embryonic stem cells.

17. The system of claim 15, wherein the system comprises a neurotrophic factor.

18. An embryoid body free system for generating astrocytes comprising a) a first in vitro population of cells comprising primate pluripotent stem cells;

and b) a second in vitro cell population comprising progeny of a portion of the first population of cells, wherein the progeny express glial fibrillary acidic protein.

19. The system of claim 18, wherein primate pluripotent stem cells are human embryonic stem cells.

20. The system of claim 18, wherein the system comprises a neurotrophic factor.

21. An embryoid body free system for generating oligodendrocytes comprising a) a first in vitro population of cells comprising primate pluripotent stem cells;

and b) a second in vitro cell population comprising progeny of a portion of the first population of cells, wherein the progeny express GalC.

22. The system of claim 21, wherein primate pluripotent stem cells are human embryonic stem cells.

23. The system of claim 21, wherein the system comprises a neurotrophic factor.