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Bombesin stimulation of p125 focal adhesion kinase tyrosine phosphorylation. Role of protein kinase C, Ca2+ mobilization, and the actin cytoskeleton.
TLDR
It is demonstrated that neither the PKC nor Ca2+ pathways are responsible for the rapid stimulation of p125FAK tyrosine phosphorylation by neuropeptide growth factors, and the integrity of the actin cytoskeleton is essential for the effects of both PDB and bombesin. Expand
Bombesin, vasopressin, and endothelin rapidly stimulate tyrosine phosphorylation of the focal adhesion-associated protein paxillin in Swiss 3T3 cells.
Treatment of Swiss 3T3 cells with bombesin caused a striking increase (21-fold) in the tyrosine phosphorylation of the cytoskeleton-associated protein paxillin, as judged by anti-phosphotyrosineExpand
High-affinity receptors for peptides of the bombesin family in Swiss 3T3 cells.
TLDR
The results demonstrate that the mitogenic response of Swiss 3T3 cells to peptides of the bombesin family is mediated by a class of receptors distinct from those of other mitogens for these cells. Expand
Bombesin, vasopressin, and endothelin stimulation of tyrosine phosphorylation in Swiss 3T3 cells. Identification of a novel tyrosine kinase as a major substrate.
TLDR
The finding that one of these substrates is a tyrosine kinase suggests the existence of a novel signal transduction pathway in the action of mitogenic neuropeptides. Expand
Protein kinase C activation enhances cAMP accumulation in Swiss 3T3 cells: inhibition by pertussis toxin.
TLDR
The results presented here suggest an unusual function for a pertussis toxin substrate--namely, coupling protein kinase C activation to cAMP production. Expand
A role for neuropeptides in the control of cell proliferation.
Early events elicited by bombesin and structurally related peptides in quiescent Swiss 3T3 cells. I. Activation of protein kinase C and inhibition of epidermal growth factor binding
TLDR
The activation of protein kinase C in intact Swiss 3T3 cells by peptides of the bombesin family may lead to rapid inhibition of the binding of 125I-EGF to its cellular receptor. Expand
Increased mitogenic responsiveness of Swiss 3T3 cells expressing constitutively active Gs alpha.
Mutational replacement of glutamine-227 with a leucine residue in the GTP-binding domain of the alpha subunit of GS (Q227L alpha S) reduces its ability to hydrolyse GTP and causes constitutiveExpand
A substance P antagonist also inhibits specific binding and mitogenic effects of vasopressin and bombesin-related peptides in Swiss 3T3 cells.
TLDR
Results indicate that [D-Arg1,D-Pro2, D-Trp7,9,Leu11] substance P has the ability to interact with the receptors for three structurally unrelated peptide hormones. Expand
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