临床神经外科杂志
臨床神經外科雜誌
림상신경외과잡지
JOURNAL OF CLINICAL NEUROSURGERY
2014年
2期
90-93
,共4页
李晓良%孙王伟%张曙光%万意%石磊%王之敏%王存祖
李曉良%孫王偉%張曙光%萬意%石磊%王之敏%王存祖
리효량%손왕위%장서광%만의%석뢰%왕지민%왕존조
胶质瘤%miR-125b%侵袭
膠質瘤%miR-125b%侵襲
효질류%miR-125b%침습
glioma%miR-125 b%invasion
目的:探讨体内miR-125 b表达对人脑胶质瘤细胞侵袭力的影响及其可能的机制。方法培养原代胶质瘤细胞,分别转染miR-125b mimics和miR-125b inhibitor 慢病毒载体,上调或下调细胞中miR-125b表达水平,种植乳鼠皮下,Transwell试验评价胶质瘤细胞侵袭能力的变化,Western Blot 验证侵袭相关基质金属蛋白酶(MMP)-2、MMP-9及RECK和TIMP3蛋白的表达。结果转染miR-125b mimics能有效提高原代胶质瘤细胞中miR-125b的表达,miR-125b inhibitor 有效降低miR-125b 的表达;体内实验表明miR-125b mimics及inhibitor对胶质瘤侵袭能力无明显影响,不影响侵袭相关MMP-2、MMP-9及RECK、TIMP3蛋白的表达。结论体内miR-125b表达水平与原代胶质瘤细胞的侵袭能力无明显相关。
目的:探討體內miR-125 b錶達對人腦膠質瘤細胞侵襲力的影響及其可能的機製。方法培養原代膠質瘤細胞,分彆轉染miR-125b mimics和miR-125b inhibitor 慢病毒載體,上調或下調細胞中miR-125b錶達水平,種植乳鼠皮下,Transwell試驗評價膠質瘤細胞侵襲能力的變化,Western Blot 驗證侵襲相關基質金屬蛋白酶(MMP)-2、MMP-9及RECK和TIMP3蛋白的錶達。結果轉染miR-125b mimics能有效提高原代膠質瘤細胞中miR-125b的錶達,miR-125b inhibitor 有效降低miR-125b 的錶達;體內實驗錶明miR-125b mimics及inhibitor對膠質瘤侵襲能力無明顯影響,不影響侵襲相關MMP-2、MMP-9及RECK、TIMP3蛋白的錶達。結論體內miR-125b錶達水平與原代膠質瘤細胞的侵襲能力無明顯相關。
목적:탐토체내miR-125 b표체대인뇌효질류세포침습력적영향급기가능적궤제。방법배양원대효질류세포,분별전염miR-125b mimics화miR-125b inhibitor 만병독재체,상조혹하조세포중miR-125b표체수평,충식유서피하,Transwell시험평개효질류세포침습능력적변화,Western Blot 험증침습상관기질금속단백매(MMP)-2、MMP-9급RECK화TIMP3단백적표체。결과전염miR-125b mimics능유효제고원대효질류세포중miR-125b적표체,miR-125b inhibitor 유효강저miR-125b 적표체;체내실험표명miR-125b mimics급inhibitor대효질류침습능력무명현영향,불영향침습상관MMP-2、MMP-9급RECK、TIMP3단백적표체。결론체내miR-125b표체수평여원대효질류세포적침습능력무명현상관。
Objective To investigate the function and possible mechanisms of miR-125 b expression on the invasion of glioma in vivo .Methods Primary glioblastoma cells were separated and cultured , which were transfected with lentiviral vectors for miR-21 mimics or miR-21 inhibitors for upregulation or downregulation of miR-125b expression levels.After that, cells were directly injected subcutaneously into the flanks of nude mice .The invasive effects of primary glioblastoma cells and stem cells were measured by Transwell assay , invasion related genes were screened by mRNA array, and the expressing levels of matrix metalloprotease ( MMP)-2, MMP-9, RECK and TIMP3 were identified by Western blot .Results miR-125 b mimics transfection in vitro could effectively improve the expression of miR-125 b in primary glioblastoma cells and stem cells , miR-125 b inhibitor transfection could effectively inhibit the expression of miR-125 b.Results showed that miR-125 b mimics or inhibitor had no effects on the invasion of primary glioblastoma cells in vivo , and did not affect the expression of MMP-2, MMP-9, RECK and TIMP3.Conclusion miR-125b expression is not related to the invasion properties of primary glioblastoma cells in vivo .