Abstract:
:[D-Arg1,D-Trp5,7,9,Leu11]Substance P (SP) was identified out of a panel of novel SP analogues as the most potent inhibitor of small cell lung cancer (SCLC) cell growth. This analogue inhibited proliferation of H-510 and H-69 SCLC cells in liquid culture and in semisolid media (IC50, 5 microM). Colony formation stimulated by multiple neuropeptides, including vasopressin and bradykinin, was also blocked by [D-Arg1,D-Trp5,7,9,Leu11]SP. This new SP analogue inhibited vasopressin- or bradykinin-induced Ca2+ mobilization and mitogen-activated protein kinase activation. Administration of [D-Arg1,D-Trp5,7,9,Leu11]SP inhibited the growth of an H-69 xenograft in nude mice. Our results support the hypothesis that SP analogue broad-spectrum neuropeptide antagonists could be of therapeutic value in SCLC.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Seckl MJ,Higgins T,Widmer F,Rozengurt Esubject
Has Abstractpub_date
1997-01-01 00:00:00pages
51-4issue
1eissn
0008-5472issn
1538-7445journal_volume
57pub_type
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