Method for efficient transfer of human blastocyst-derived stem cells (hBS cells) from a feeder-supported to a feeder-free culture system, long-term propagation of hBS cells under feeder-free conditions and use of cultured hBS cells for applications in myocardial regeneration
US7638328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2004 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Feb 27, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/54
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for the transfer of human blastocyst-derived stem cells (hBS cells) to feeder-free culture system and propagation of the cells in such a feeder-free culture system, the method comprising the following steps of (a) transferring the balstocyst-derived stem cells from feeder to feeder free culture by mechanical treatment, (b) optionally, culturing the blastocyst-derived stem cells under feeder cell free growth conditions in a suitable growth medium and/or on a suitable support substrate, and (c) optionally passaging the blastocyst derived stem cell line every 3-10 days by enzymatic and/or mechanical treatment. The invention also relates to the application of hBS cells cultured under feeder free condition in medicine (e.g., myocardial regeneration) and screening and toxicity tests.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.