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- _5 wasQuotedFrom 11751905 provenance.
- _5 value "We have shown recently that Flt-1 VEGFR is expressed in the human MM cell line and patient MM cells and is tyrosine-phosphorylated upon VEGF stimulation (12). Because Flt-1 and the p85 subunit of PI 3-kinase were associated when overexpressed in yeast cells (54), we next determined whether this interaction is biologically significant in MM cells. Flt-1 was immunoprecipitated from VEGF treated and non-treated MM.1S cells followed by immunoblotting with anti-p85 Ab. As illustrated in Fig.5a, p85 is constitutively associated with Flt-1, suggesting that PI 3-kinase participates in Flt-1-mediated VEGF signal transduction." provenance.