槲皮素对人宫颈鳞癌顺铂耐药细胞 SiHa/DDP的逆转作用研究

2021-12-16 16:24:18冯磊杨建敏杨然孙丽董莉丽张清伟
中国药房 2021年23期
关键词:耐药信号

冯磊 杨建敏 杨然 孙丽 董莉丽 张清伟

中图分类号 R965 文献标志码 A 文章编号 1001-0408(2021)23-2875-05

DOI 10.6039/j.issn.1001-0408.2021.23.10

摘 要 目的:研究槲皮素对人宫颈鳞癌顺铂耐药细胞SiHa/DDP的逆转作用。方法:测定顺铂对SiHa/DDP细胞的耐药指数以及槲皮素对SiHa/DDP细胞的逆转耐药倍数;考察槲皮素(0.005 μg/mL)、顺铂(2.5 μg/mL)、顺铂联合槲皮素(2.5 μg/mL顺铂+0.005    μg/mL槲皮素)、槲皮素联合通路抑制剂(0.005 μg/mL槲皮素+20 nmol/L雷帕霉素)对SiHa/DDP细胞凋亡率及磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)信号通路相关蛋白[PI3K、Akt、mTOR、肿瘤多药耐药蛋白(P-gp)、p70核糖体S6激酶(p70S6K)]表达的影响。结果:顺铂对SiHa/DDP细胞的耐药指数为5.19,槲皮素对SiHa/DDP细胞的逆转耐药倍数为4.00。与单用顺铂和单用槲皮素比较,顺铂联合槲皮素、槲皮素联合雷帕霉素均可显著升高SiHa/DDP细胞的凋亡率(P<0.05),显著降低Akt、mTOR、p70S6K蛋白的磷酸化水平和P-gp蛋白的表達水平(P<0.05)。结论:槲皮素可逆转SiHa/DDP细胞对顺铂的耐药性,其作用机制可能与抑制PI3K/Akt/mTOR信号通路相关蛋白的表达有关。

关键词 槲皮素;宫颈鳞癌;SiHa/DDP细胞;PI3K/Akt/mTOR信号通路;耐药性;逆转

Study on Reversal Effect of Quercetin on Human Cervical Squamous Carcinoma Cisplatin-resistant Cell Line SiHa/DDP

FENG Lei1,YANG Jianmin1,YANG Ran1,SUN Li1,DONG Lili1,ZHANG Qingwei2(1. Dept. of Gynaecology, Nanyang Municipal Central Hospital, Henan Nanyang 473000, China; 2. Dept. of Gynaecology, the First Affiliated Hospital of Luohe Medical College, Henan Luohe 462000, China)

ABSTRACT   OBJECTIVE: To study the reversal effect of quercetin on human cervical squamous carcinoma cisplatin-resistant cell line SiHa/DDP. METHODS: The drug resistance index of cisplatin to SiHa/DDP cells, and the reversal resistance multiple of quercetin to SiHa/DDP cells were determined. The effects of quercetin (0.005 μg/mL), cisplatin (2.5 μg/mL), cisplatin combined with quercetin (2.5 μg/mL cisplatin+0.005 μg/mL quercetin), quercetin combined with pathway inhibitor (0.005 μg/mL quercetin+20 nmol/L rapamycin) on the apoptotic rate of SiHa/DDP cells were investigated, as well as its effects on the expression of phosphatidylinositol 3-kinase (PI3K)/protein kinase B(Akt)/mammalian rapamycin target protein (mTOR) signaling pathway related proteins (PI3K, Akt, mTOR, P-gp, p70S6K). RESULTS: The resistance index of cisplatin to SiHa/DDP cells was 5.19, and reversal resistance multiple of quercetin to SiHa/DDP cells was 4.00. Compared with cisplatin alone and quercetin alone, cisplatin combined with quercetin, quercetin combined with rapamycin could significantly increase the apoptotic rate of SiHa/DDP cells (P<0.05), while decreased the phosphorylation of Akt, mTOR and p70S6K protein as well as the expression of P-gp protein (P<0.05). CONCLUSIONS: Quercetin can effectively reverse drug resistance of SiHa/DDP cells to cisplatin, which may be associated with inhibiting the expression of the protein related to PI3K/Akt/mTOR signaling pathway.

KEYWORDS   Quercetin; Cervical squamous carcinoma; SiHa/DDP cells; PI3K/Akt/mTOR signaling pathway; Drug resistance; Reversal

宫颈癌是较常见的恶性腫瘤之一,其发生、发展与人乳头瘤病毒(HPV)密切相关;在宫颈癌的病理分类中,宫颈鳞癌是最主要的类型,约占80%[1]。有研究提示,以顺铂为基础的辅助化疗对宫颈鳞癌的副作用小、疗效确切,可改善患者局部病灶,提高患者生存率;但顺铂易产生耐药性,降低肿瘤化疗的效果[2]。相关研究发现,在多数耐药肿瘤细胞中磷脂酰肌醇3-激酶(PI3K)/蛋白激酶B(Akt)/哺乳动物雷帕霉素靶蛋白(mTOR)信号通路常处于异常激活的状态[3]。PI3K/Akt/mTOR信 号通路相关蛋白是调控细胞增殖及分裂的关键信号分子,可影响肿瘤多药耐药蛋白(P-gp)、p70核糖体S6激酶(p70S6K)等蛋白的表达,从而激活肿瘤细胞的耐药作用[4-5]。……

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