circSKA3/miR-3163/ADAM9基因轴调控卵巢癌SKOV3细胞增殖、迁移、侵袭及免疫因子表达的机制研究

Mechanism of circSKA 3/miR-3163/ADAM 9 gene axis regulating proliferation,migration,invasion and expressions of immune factors in ovarian cancer SKOV 3 cells

目的:探讨circSKA3/miR-3163/去整合素-金属蛋白酶9(ADAM9)基因轴调控卵巢癌SKOV3细胞增殖、迁移、侵袭及免疫因子表达的机制。方法:qRT-PCR检测卵巢癌组织、癌旁组织circSKA3、miR-3163表达;Western blot检测组织ADAM9蛋白水平。选用SKOV3细胞进行体外实验,分为sh-NC组、sh-circSKA3组、miR-NC组、miR-3163组、sh-circSKA3+antimiR-3163组、sh-circSKA3+pcDNA-ADAM9组。qRT-PCR检测SKOV3细胞circSKA3、miR-3163表达;CCK-8、划痕实验、Transwell检测细胞增殖活性、迁移及侵袭能力;ELISA检测细胞上清中TNF-α、IL-6、IL-10表达;双荧光素酶报告实验验证circSKA3与miR-3163、miR-3163与ADAM9的靶向关系;Western blot检测SKOV3细胞ADAM9、基质金属蛋白酶-2(MMP-2)、MMP-9蛋白水平。结果:与癌旁组织比较,卵巢癌组织circSKA3、ADAM9表达升高,miR-3163表达降低(P<0.05);与sh-NC组/miR-NC组比较,sh-circSKA3组/miR-3163组细胞增殖活性、划痕愈合率降低,侵袭细胞数减少,MMP-2、MMP-9蛋白及TNF-α、IL-6表达降低,IL-10表达升高(P<0.05);circSKA3可靶向调控miR-3163表达,miR-3163可靶向结合ADAM9(P<0.05);与sh-circSKA3组比较,sh-circSKA3+anti-miR-3163组、sh-circSKA3+pcDNA-ADAM9组细胞增殖活性、划痕愈合率升高,侵袭细胞数增多,MMP-2、MMP-9蛋白及TNF-α、IL-6表达升高,IL-10表达降低(P<0.05)。结论:沉默circSKA3表达可通过上调miR-3163表达而降低ADAM9表达,抑制卵巢癌细胞增殖、迁移、侵袭,调控免疫因子表达。

Objective:To explore mechanism of regulation of proliferation,migration,invasion and expressions of immune factors of ovarian cancer SKOV3 cells by circSKA3/miR-3163/disintegrin-metalloproteinase 9(ADAM9)gene axis.Methods:qRT-PCR was used to detect circSKA3 and miR-3163 expressions in ovarian cancer tissues and paracancerous tissues.Western blot was used to detect ADAM9 protein level in tissues.SKOV3 cells were selected for cell experiment in vitro,and divided into sh-NC group,sh-circSKA3 group,miR-NC group,miR-3163 group,sh-circSKA3+anti-miR-3163 group,sh-circSKA3+pcDNA-ADAM9 group.circSKA3 and miR-3163 expressions in SKOV3 cells were detected by qRT-PCR.CCK-8,scratch test and Transwell were used to detect cell proliferation activity,migration and invasion ability.ELISA was used to detect expressions of TNF-α,IL-6 and IL-10.Double luciferase report experiment verified targeting relationship between circSKA3 with miR-3163,miR-3163 and ADAM9.Western blot was used to detect levels of ADAM9,matrix metalloproteinase-2(MMP-2)and MMP-9 in SKOV3 cells.Results:Com-pared with paracancerous tissues,circ-SKA3 and ADAM9 expressions were increased,and miR-3163 expression was decreased in ovarian cancer tissues(P<0.05).Compared with sh-NC group/miR-NC group,sh-circSKA3 group/miR-3163 group showed decreased cell proliferative activity and healing rate,decreased number of invasive cells,MMP-2,MMP-9 proteins and TNF-αand IL-6 expres-sions were decreased,expression of IL-10 was increased(P<0.05).circSKA3 could targeting regulate expression of miR-3163,and miR-3163 could targeting bind to ADAM9(P<0.05).Compared with sh-circSKA3 group,cell proliferation activity and scratch healing rate in sh-circSKA3+anti-miR-3163 and sh-circSKA3+pcDNA-ADAM9 groups were increased,number of invasive cells was in-creased,MMP-2,MMP-9 protein and TNF-α,IL-6 expressions were increased,while expression of IL-10 was decreased(P<0.05).Conclusion:Silencing circSKA3 expression can reduce expression of ADAM9 by up-regulating miR-3163 expression,inhibit ovarian cancer cell proliferation,migration and invasion,and regulate immune factor expression.