肖晓 周雅思 彭楚茵 邓金清 王来友 朱文博






中圖分类号 R965 文献标志码 A 文章编号 1001-0408(2021)23-2827-05
DOI 10.6039/j.issn.1001-0408.2021.23.03
摘 要 目的:研究溶瘤病毒M1(简称“M1病毒”)诱导宫颈癌细胞C-33A凋亡的作用及机制。方法:采用MTT法检测不同滴度(0、0.001、0.01、0.1、1、10 PFU/cell)M1病毒处理后C-33A细胞的存活率;将C-33A细胞分为对照组(0 PFU/cell)和M1病毒低、中、高剂量组(0.001、0.01、0.1 PFU/cell),加入相应滴度病毒,培养48 h 后,采用流式细胞仪检测细胞的凋亡率和感染率,采用Western blot法检测细胞中C/EBP 同源蛋白(CHOP)、胱天蛋白酶12(caspase-12)、caspase-3、活化的caspase-3(cleaved-caspase-3)的表达水平。结果:经不同滴度M1病毒处理后,C-33A细胞存活率均显著降低(P<0.01),且呈剂量依赖趋势。与对照组比较,M1病毒各剂量组细胞的凋亡率和感染率以及中、高剂量组细胞中CHOP、caspase-12、cleaved- caspase-3(中剂量组除外)蛋白的表达水平均显著升高(P<0.01)。结论:M1病毒可诱导宫颈癌细胞C-33A的凋亡,其作用机制可能与激活内质网应激通路有关。
关键词 溶瘤病毒M1;宫颈癌;C-33A细胞;内质网应激;细胞凋亡
Effects and Mechanism of Oncolytic Virus M1 Inducing the Apoptosis of Cervical Cancer C-33A Cells
XIAO Xiao1,ZHOU Yasi2,PENG Chuyin1,DENG Jinqing2,WANG Laiyou1,ZHU Wenbo3(1. Dept. of Pharmacy, Guangdong Provincial People’s Hospital/Guangdong Academy of Medical Sciences, Guangzhou 510080, China; 2. School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; 3. Dept. of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China)
ABSTRACT OBJECTIVE: To study the effects and mechanism of oncolytic virus M1 (called M1 virus for short) inducing the apoptosis of cervical cancer C-33A cells. METHODS: MTT assay was used to detect survival rate of C-33A cells that were treated with different titers (0, 0.001, 0.01, 0.1, 1, 10 PFU/cell) of M1 virus. C-33A cells were divided into control group (0 PFU/cell), low-dose, medium-dose and high-dose groups of M1 virus (0.001, 0.01, 0.1 PFU/cell). After treated with corresponding titers of M1 virus for 48 h, flow cytometry was used to detect the apoptotic rate and infection rate of cells; Western blot was performed to detect the protein expression of C/EBP homologous proteins (CHOP), caspase-12, caspase-3 and cleaved-caspase-3. RESULTS: After treated with different titers of M1 virus, the survival rate of C-33A cells decreased significantly (P<0.01), and showed a dose-dependent trend. Compared with control group, the apoptotic rate and infection rate of cells in M1 virus groups as well as the protein expression of CHOP, caspase-12 and cleaved-caspase-3 (except for medium-dose group) in M1 virus medium-dose and high-dose groups were increased significantly (P<0.01). CONCLUSIONS: M1 virus can induce the apoptosis of cervical cancer C-33A cells, and its mechanism may be related to the activation of endoplasmic reticulum stress pathway.
KEYWORDS Oncolytic virus M1; Cervical cancer; C-33A cells; Endoplasmic reticulum stress; Cell apoptosis
宫颈癌是常见的女性恶性肿瘤,也是威胁人类生命安全的主要疾病。《2020年全球癌症报告》显示:宫颈癌发病率在女性癌症中排名第2位,发病年龄呈年轻化趋势;2020年全球宫颈癌新发病例超过60万例,死亡病例超过34万[1]。目前,早期宫颈癌的治疗效果较好,但晚期宫颈癌患者生存质量低、病死率居高不下[2-3]。因此,晚期宫颈癌的治疗已经成为临床工作的难点和重点,亟须新的安全有效的临床方案、策略或者药物来治疗。
溶瘤病毒是一类天然的或经过基因修饰的病毒,可特异性地在肿瘤细胞中复制,然后通过直接裂解细胞或者激活免疫来杀伤肿瘤细胞,而不损伤正常细胞[4-5]。……