Inhibition of angiogenesis and HCT-116 xenograft tumor growth in mice by kallistatin

作     者：Yong Diao Jian Ma Wei-Dong Xiao Jia Luo Xin-Yan Li Kin-Wah Chu Peter WC Fung Nagy Habib Farzin Farzaneh Rui-An Xu 

作者机构：Molecular Medicine Engineering Research Center of the Ministry of EducationInstitute of Molecular Medicine Huaqiao University Quanzhou362021 Fujian Province China Department of Medicine Hong Kong University Hong Kong China Department of Pharmacy Chicago UniversityUnited States Department of Transplantation Imperial College London United Kingdom Department of Haematological & Molecular Medicine King's College London London SE5 9NUUnited Kingdom 

出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)

年 卷 期：2007年第13卷第34期

页      面：4615-4619页

核心收录：

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

基　　金：Hong Kong University Foundation (special donation from Madame Cho So Man) Huaqiao University Foundation B105 

主　　题：Kallistatin Adeno-associated virus Angiogenesis inhibitors Colon Neoplasm 

摘      要：AIM： TO investigate the inhibitory effect of kallistatin （KAL） on angiogenesis and HCT-116 xenograft tumor growth. METHODS： Heterotopic subcutaneous injection of 2 Seven days later, 2 x 1011 injected intratumorally （n tumors were induced by x 106 HCT-11 cells in mice. rAAV-GFP or rAAV-KAL was = 5 for each group）. The mice were sacrificed at d 28, by which time the tumors in the rAAV-GFP group had grown to beyond 5% of the total body weight. Tumor growth was measured by calipers in two dimensions. Tumor angiogenesis was determined with tumor microvessel density （MVD） by immunohistology. Tumor cell proliferation was assessed by Ki-67 staining. RESULTS： Intratumor injection of rAAV-KAL inhibited tumor growth in the treatment group by 78% （171 ＋ 52 mm^3） at d 21 after virus infection compared to the control group （776 ＋ 241 mm^3）. Microvessel density was significantly inhibited in tumor tissues treated with rAAV-KAL, rAAV-KAL also decreased the proportion of proliferating cells （Ki-67 positive cells） in tumors compared with the control group. CONCLUSION： rAAV-mediated expression of KAL inhibits the growth of colon cancer by reducing angiogenesis and proliferation of tumor cells, and may provide a promising anti-angiogenesis-based approach to the treatment of metastatic colorectal cancer.