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Long term bone marrow cells were transformed with the amphotropic retrovirus vector LXSN16E6E7 in the presence of polybrene.
Twenty-seven immortalized clones designed HS-1 to HS-27 were isolated.
HS-27A is a subclone of HS-27.
One of these cell lines HS-27A (CRL-2496) has been deposited in the ATCC's general collection. One cell line (HS-5) has been deposited in the Patent Depository (CRL-11882).
HS-27A forms large flattened polygonal shaped cells that exemplify "blanket" cells and maintain numerous intercellular contacts with neighboring cells.
HS-27A expresses relatively high levels of vascular cell adhesion molecule 1 (VCAM-1).
Roecklein BA, Torok-Storb B. Functionally distinct human marrow stromal cell lines immortalized by transduction with the human papilloma virus E6/E7 genes. Blood 85: 997-1005, 1995. PubMed: 7849321
Torok-Storb B, et al. Human marrow stromal cell lines which sustain hematopoieses. US Patent 5,879,940 dated Mar 9 1999
