机构:[1]State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China四川大学华西医院[2]Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu, Sichuan, China四川省肿瘤医院
Metastasis is the most lethal attribute of human malignancy. High-level expression of survivin is involved in both carcinogenesis and angiogenesis in cancer. Previous studies indicate that a mutation of the threonine residue at position 34 (Thr34Ala) of survivin generates a dominant-negative mutant that induces apoptosis, inhibits angiogenesis, and suppresses highly metastatic breast carcinoma in mouse models. We investigated the efficacy of gene therapy with a survivin dominant-negative mutant and possible factors related to lymph node metastasis. The metastasis rate was compared between each group in order to find a survivin-targeted therapy against lymphangiogenesis in its earliest stages. We established lymph node metastasis models and treated animals with H22 tumors with Lip-mSurvivinT34A (Lip-mS), Lip-plasmid (Lip-P), or normal saline (NS). Eight days after the last dose, five randomly chosen mice from each group were sacrificed. We detected the apoptotic index, microvessel density (MVD), lymphatic microvessel density (LMVD), and the expression of VEGF-D with immunohistochemistry. After the remaining animals were sacrificed, we compared the tumor-infiltrated lymph nodes in each group. Administration of mSurvivinT34A plasmid complexed with cationic liposome (DOTAP/chol) resulted in the efficacious inhibition of tumor growth and lymph node metastasis within the mouse H22 tumor model. These responses were associated with tumor cell apoptosis, and angiogenesis and lymphangiogenesis inhibition. Our results suggested that Lip-mSurvivinT34A induced apoptosis and inhibited tumor angiogenesis and lymphangiogenesis, thus suppressing tumor growth and lymphatic metastasis. The mSurvivinT34A survivin mutant is a promising strategy of gene therapy to inhibit lymphatic metastasis.
基金:
National ST Major project [2012ZX09501001-003]; National Key Basic Research Program of ChinaNational Basic Research Program of China [2010CB529900]
第一作者机构:[1]State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China
共同第一作者:
通讯作者:
通讯机构:[1]State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, China[*1]State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Gaopeng Street, Keyuan Road 4, Chengdu 610041, China
推荐引用方式(GB/T 7714):
Xu Guang-Chao,Zhang Peng,Leng Fei,et al.Inhibition of Lymphatic Metastases by a Survivin Dominant-Negative Mutant[J].ONCOLOGY RESEARCH.2012,20(12):579-587.doi:10.3727/096504013X13775486749416.
APA:
Xu, Guang-Chao,Zhang, Peng,Leng, Fei,Pan, Li,Li, Zhi-Yong...&Wang, Chun-Ting.(2012).Inhibition of Lymphatic Metastases by a Survivin Dominant-Negative Mutant.ONCOLOGY RESEARCH,20,(12)
MLA:
Xu, Guang-Chao,et al."Inhibition of Lymphatic Metastases by a Survivin Dominant-Negative Mutant".ONCOLOGY RESEARCH 20..12(2012):579-587