Journal
BLOOD
Volume 103, Issue 5, Pages 1647-1652Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2003-06-1967
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Funding
- NIAMS NIH HHS [AR 47796, AR 48323] Funding Source: Medline
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Recently there has been interest in developing cell and gene therapies with adult stem cells from human bone marrow referred to as mesenchymal stem cells or marrow stromal cells (hMSCs). We incubated early-passage hMSCs in serum-free medium without cytokines or other supplements for 2 to 4 weeks. Surprisingly, a subpopulation of the cells survived serum deprivation and then began to proliferate in serum-containing medium. The cells selected by serum deprivation had longer telomeres than control cells. Also, the patterns of gene expression revealed by reverse transcriptase-polymerase chain reaction (RT-PCR) assays and microarray data indicated that the cells selected by serum deprivation were a subpopulation of very early progenitor cells with enhanced expression of octomer-binding transcription factor 4 (OCT-4) and several other genes characteristically expressed in embryonic cells. (C) 2004 by The American Society of Hematology.
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