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  • Title: Expression of platelet-derived growth factor and its receptors by two pre-B acute lymphocytic leukemia cell lines.
    Author: Tsai LH, White L, Raines E, Ross R, Smith RG, Cushley W, Ozanne B.
    Journal: Blood; 1994 Jan 01; 83(1):51-5. PubMed ID: 8274753.
    Abstract:
    Platelet-derived growth factors (PDGF) are potent regulators of cell proliferation. The three isoforms of PDGF AA, AB, and BB are encoded by two genes: PDGF A and PDGF B. The v-sis oncogene is homologous to the PDGF-B gene. v-sis can transform cells that express the appropriate PDGF receptors. Two different types of receptors, PDGF-alpha and PDGF-beta, also encoded by two genes, have been identified. We show that two cell lines. SMS-SB and NALM-6, both derived from pre-B-cell acute lymphocytic leukemias, express the PDGF-A chain gene, and one of them, SMS-SB, releases PDGF-A chains into the media. The SMS-SB cells also express the PDGF-beta receptor, whereas NALM-6 cells express the PDGF-alpha receptor and bind PDGF. This extends the possible targets for PDGF to the B-cell lineage lymphocytes.
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