pubmed-article:8676076 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0086418 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0040052 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C1522457 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C2323499 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0079189 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C1704632 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C1280500 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0871261 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C1332710 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0249989 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C2911692 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C1706817 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0443199 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0679622 | lld:lifeskim |
pubmed-article:8676076 | lifeskim:mentions | umls-concept:C0205314 | lld:lifeskim |
pubmed-article:8676076 | pubmed:issue | 6 | lld:pubmed |
pubmed-article:8676076 | pubmed:dateCreated | 1996-8-15 | lld:pubmed |
pubmed-article:8676076 | pubmed:abstractText | A high proportion of the CD34+CD38- cells in normal human marrow are defined as long-term culture-initiating cells (LTC-IC) because they can proliferate and differentiate when co-cultured with cytokine-producing stromal feeder layers. In contrast, very few CD34+CD38- cells will divide in cytokine-containing methylcellulose and thus are not classifiable as direct colony-forming cells (CFC), although most can proliferate in serum-free liquid cultures containing certain soluble cytokines. Analysis of the effects of 16 cytokines on CD34+CD38- cells in the latter type of culture showed that Flt3-ligand (FL), Steel factor (SF), and interleukin (IL)-3 were both necessary and sufficient to obtain an approximately 30-fold amplification of the input LTC-IC population within 10 d. As single factors, only FL and thrombopoietin (TPO) stimulated a net increase in LTC-IC within 10 d. Interestingly, a significantly increased proportion of the CFC produced from the TPO-amplified LTC-IC were erythroid. Increases in the number of directly detectable CFC of > 500-fold were also obtainable within 10 d in serum-free cultures of CD34+CD38- cells. However, this required the presence of IL-6 and/or granulocyte/colony-stimulating factor and/or nerve growth factor beta in addition to FL, SF, and IL-3. Also, for this response, the most potent single-acting factor tested was IL-3, not FL. Identification of cytokine combinations that differentially stimulate primitive human hematopoietic cell self-renewal and lineage determination should facilitate analysis of the intracellular pathways that regulate these decisions as well as the development of improved ex vivo expansion and gene transfer protocols. | lld:pubmed |
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pubmed-article:8676076 | pubmed:language | eng | lld:pubmed |
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pubmed-article:8676076 | pubmed:citationSubset | IM | lld:pubmed |
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pubmed-article:8676076 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:8676076 | pubmed:month | Jun | lld:pubmed |
pubmed-article:8676076 | pubmed:issn | 0022-1007 | lld:pubmed |
pubmed-article:8676076 | pubmed:author | pubmed-author:EavesC JCJ | lld:pubmed |
pubmed-article:8676076 | pubmed:author | pubmed-author:PiretJ MJM | lld:pubmed |
pubmed-article:8676076 | pubmed:author | pubmed-author:PetzerA LAL | lld:pubmed |
pubmed-article:8676076 | pubmed:author | pubmed-author:ZandstraP WPW | lld:pubmed |
pubmed-article:8676076 | pubmed:issnType | Print | lld:pubmed |
pubmed-article:8676076 | pubmed:day | 1 | lld:pubmed |
pubmed-article:8676076 | pubmed:volume | 183 | lld:pubmed |
pubmed-article:8676076 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:8676076 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:8676076 | pubmed:pagination | 2551-8 | lld:pubmed |
pubmed-article:8676076 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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