Title : VEGF secretion by neuroendocrine tumor cells is inhibited by octreotide and by inhibitors of the PI3K/AKT/mTOR pathway.

Pub. Date : 2010

PMID : 20389030






4 Functional Relationships(s)
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1 Octreotide and rapamycin induced a significant decrease in VEGF production by all three cell lines; LY294002 significantly inhibited VEGF production by STC-1 and INS-r3 only. Sirolimus vascular endothelial growth factor A Rattus norvegicus
2 By Western blotting analysis, we observed decreased intracellular levels of VEGF and HIF-1alpha under octreotide, rapamycin and LY294002. Sirolimus vascular endothelial growth factor A Rattus norvegicus
3 For rapamycin and LY294002, this effect was likely mediated by the inhibition of the mTOR/HIF-1/VEGF pathway. Sirolimus vascular endothelial growth factor A Rattus norvegicus
4 In conclusion, our study points out to the complex regulation of VEGF synthesis and secretion in neoplastic GEP endocrine cells and suggests that the inhibition of VEGF production by octreotide and rapamycin may contribute to their therapeutic effects. Sirolimus vascular endothelial growth factor A Rattus norvegicus