A Potential Role of Bradykinin in Angiogenesis and Growth of S-180 Mouse Tumors

The Japanese Journal of Pharmacology

Izumi Hayashi¹  Keiko Ishihara¹  Masataka Majima¹  Shohei Yamashina² 

[1] Department of Molecular Pharmacology, Kitasato University Graduate School of Medical Sciences;Department of Anatomy, Kitasato University School of Medicine

关键词: Angiogenesis;    Kallikrein-kinin system;    Bradykinin B2 receptor;    Kallikrein;    Sarcoma 180;   

DOI  :  10.1254/jjp.87.318

学科分类：药理学

来源: Nihon Yakuri Gakkai Henshuubu / Japanese Pharmacological Society

【 摘 要 】

References(51)Cited-By(15)Angiogenesis is an important event in tumor growth. We evaluated the contribution of endogenous bradykinin to tumor-associated angiogenesis and tumor growth using pharmacological approaches in mice bearing sarcoma 180 cells. The weight of implanted tumors increased in parallel with increased hemoglobin contents (a parameter to evaluate angiogenesis) over a 20-day experimental period. Daily administration of bradykinin B2-receptor antagonists, Hoe140 (0.1 and 1 mg/kg per day, local injection) or FR173657 (30 mg/kg per day, p.o.), significantly suppressed the increment in angiogenesis and tumor weight, but a B1-receptor antagonist, desArg10-Hoe140 (1 mg/kg per day), did not. Administration of a plasma kallikrein inhibitor, soybean trypsin inhibitor (3 mg/site per day), significantly suppressed angiogenesis and tumor growth. In contrast, bradykinin-degrading enzyme inhibitors, captopril and phosphoramidon (500 μg/site per day), enhanced angiogenesis and increased tumor weight. Our results suggest that bradykinin, produced by plasma kallikrein or plasma kallikrein-like enzymes, promote tumor-associated angiogenesis and tumor growth in vivo.

【 授权许可】

Unknown