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纸质出版:2016
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上调miR-100降低宫颈癌细胞侵袭和迁移及顺铂耐药性[J]. 中山大学学报(医学科学版), 2016,37(1).
Up-regulation of miR-100 Attenuates Invasiveness, Migration and Cis -platin Resistance in Cervical Cancer Cells[J]. Journal of Sun Yat-sen University (Medical Sciences), 2016, 37(1).
摘 要: 【目的】 在宫颈癌Hela、Siha细胞中上调miR-100后,研究细胞侵袭及迁移功能及顺铂耐药性变化并探讨其机制。【方法】 将miR-100 mimic通过lipomax试剂转染至宫颈癌细胞Hela、Siha中,细胞主要分为两组:NC组,为空白对照;mir100组,为上调miR-100后的细胞。transwell法观察细胞侵袭性,划痕实验观察迁移性;WB测定上皮间质变相关蛋白E-Cadherin、Snail、Vimintin及MMP2、uPA的表达;CCK8法测定顺铂耐药性。 【结果】 ①两系宫颈癌细胞上调miR-100后,细胞的侵袭、迁移性降低;②上调miR-100后的宫颈癌细胞中上皮相关分子E-Cadherin表达上调,间质表型分子Snail、Vimintin表达下调,MMP-2表达无差异,uPA表达下降;③不同浓度顺铂作用(P < 0.001)及是否转染mir-100 siRNA(P < 0.001)对细胞存活率的改变均具有显著统计学意义,且浓度因素与处理因素间相对独立;在Siha细胞中得出相同结论(P < 0.001)。HelaNC、Hela 100细胞株顺铂IC50(μmol/L)分别为:8.19 ± 0.34、5.38 ± 0.47,SihaNC、Siha 100的IC50分别为8.86 ± 0.92、6.19 ± 0.23, P < 0.05。【结论】 miR-100在宫颈癌细胞Hela及Siha中通过降低上皮间质变过程起抑制侵袭和转移的作用,该功能可能与uPA的改变有关。上调miR-100可降低宫颈癌细胞对顺铂的耐药性。
Abstract: 【Objective】 To observe the invasiveness, migration and cis -platin resistance in cervical cancer cell lines Hela and Siha up -regulated with mir -100 mimics. 【Method】The expression of mir -100 was up -regulated using mimics via lipomax. Cells were grouped and labeled with ‘NC’ and ‘mir100’. Transwell assay and scarification test were used to reveal the invasiveness and migration of cervical cancer cells, western blot was used to test protein expressions, cck -8 was used to test resistance to cis -platin. 【Result】With the up -regulation of mir -100, Hela and Siha lost invasiveness and migration; E -Cadherin increases while snail and vimintin decrease after mir -100 transfection, MMP2 showed no change and uPA was attanuted. Hela and Siha cells were much more sensitive to cis -platin therapy after up -regulation of mir -100. 【Conclusion】 miR -100 attanuates EMT in cervical cancer cell Hela and Siha. Up -regulation of miR -100 decreases resistance to cis -platin in Hela and Siha.
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