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Vasoactive intestinal peptide synergistically stimulates DNA synthesis in mouse 3T3 cells: Role of cAMP, Ca sup 2+ , and protein kinase C

Journal Article · · Experimental Cell Research; (United States)
; ; ;  [1]
  1. Imperial Cancer Research Fund, London (England)
Vasoactive intestinal peptide synergistically stimulated initiation of DNA synthesis in Swiss 3T3 cells. The peptide stimulated ({sup 3}H)thymidine incorporation in the presence of insulin and either forskolin or an inhibitor of cAMP phosphodiesterase in a concentration-dependent manner. Half-maximal effect was obtained at 1 nM. At mitogenic concentrations, VIP stimulated a marked accumulation (eightfold) of cAMP. In contrast to other growth-promoting neuropeptides, VIP did not induce an increase in cytosolic free Ca{sup 2+} or the activation of protein kinase C. The authors conclude that neuropeptides can modulate long-term cell proliferation through multiple signaling pathways.
OSTI ID:
5321120
Journal Information:
Experimental Cell Research; (United States), Journal Name: Experimental Cell Research; (United States) Vol. 175:2; ISSN ECREA; ISSN 0014-4827
Country of Publication:
United States
Language:
English

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