大胡蜂肥大细胞脱粒肽对血管生成的抑制作用

摘要

Aim To investigate the anti-angiogenic effect of 12a, the mastoparan-like peptide from wasp ( Vespa magnifica ) venom. Methods The tube for-mation and proliferation of human umbilical vein endo-thelial cells ( HUVEC ) and chicken chorioallantoic membrane ( CAM) model were used to observe the an-ti-angiogenic effect of 12a in vitro and in vivo, respec-tively. Results In the CAM model, 0. 1 μg or 1 μg of 12 a could markedly inhibit angiogenesis induced by 0. 2 μg rh-bFGF with heavy loss of color, decreasing density and obscure frame of the vessels. The inhibi-tion rates of angiogenesis were 60 . 2 % for 0 . 1 μg and 90. 3 % for 1 μg, respectively. Accordingly, in HU-VEC culture experiment, the proliferation and angio-genesis of HUVEC treated by 1 mg·L-1 and 10 mg· L-1 of 12 a were decreased by 55. 4 %, 39. 3 % and 51. 6 %, 26. 7 %, respectively. Conclusion 12a has a significant anti-angiogenic effect in a concentra-tion-dependent manner.%目的研究大胡蜂肥大细胞脱粒肽12a对血管生成的影响。方法利用鸡胚绒毛尿囊膜( CAM)实验体内观察不同浓度的12a对血管形成的影响；采用MTT法和小管形成实验体外观察不同浓度的12a 对人脐静脉内皮细胞( HU-VEC)增殖和血管形成的影响。结果0．1和1μg 12a能明显抑制0.2μg重组人碱性成纤维细胞生长因子( rh-bFGF)诱导的10 d龄鸡胚的绒毛尿囊膜血管生成，导致不同程度的CAM血管大范围明显褪色，密度减少，结构模糊，分支多处断开，生长抑制率分别为60．2%和90．3%；1 mg · L-1和10 mg · L-112a 对 HUVEC 的增殖和血管形成分别有55．4%、39．3%和51．6%、26．7%的抑制率；结论大胡蜂肥大细胞脱粒肽12a能明显抑制新生血管的生成。