IL-27下調(diào)IL-8分泌抑制宮頸癌細胞誘導的血管內(nèi)皮細胞血管生成
[Abstract]:Aim: to investigate whether interleukin-27 (IL-27), derived from cervical cancer cells, regulates the biological behavior of vascular endothelial cells and participates in angiogenesis. Methods: the expression of IL-27 in cervical carcinoma tissues and cervical cell lines (HeLa and CaSki cells) was analyzed by immunohistochemistry Elisa and flow cytometry respectively. To study the effect of IL-27 overexpression on the proliferation and apoptosis of human umbilical vein endothelial cells (HUVECs) and the angiogenesis of HUVECs in vitro. Finally, in vivo experiments were carried out for further confirmation. Results: compared with cervicitis tissues, cervical cancer tissue highly expressed IL-27. HeLa and CaSki cells secreted IL-27 and HUVECs with low expression level of IL-27 receptor (IL-27 R: WSX-1 and gp130). However the percentage of IL-27R and IL-27 HeLa cells in HUVECs was significantly increased but the percentage of IL-27 CasKi cells was decreased. Overexpression of IL-27 in HeLa cells down-regulated the expression of Ki-67 and Bcl-2 and up-regulated FAS expression in HUVECs. In addition, the overexpression of IL-27 in HeLa cells and CasKi cells decreased the secretion of IL-8, and further inhibited the angiogenesis of vascular endothelial cells by reducing the level of IL-8. In the subcutaneous tumor model of C57 / BL6 mice, the vascular density and tumor volume in the tumor were decreased when the TC-1 cells transfected with lentivirus IL-27 were inoculated. Conclusion: IL-27 secreted by cervical cancer cells inhibits angiogenesis and inhibits the growth of cervical cancer in a paracrine manner.
【學位授予單位】:江南大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:R737.33
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