Effect of miR-1301 on proliferation and migration of oral squamous cell carcinoma
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摘要: 目的 口腔鳞状细胞癌(OSCC)发病率高,在全世界恶性肿瘤中居第六位。越来越多的证据表明,microRNAs在调控OSCC中起着关键作用,本研究旨在探讨微小RNA (miRNA)-1301对口腔鳞状细胞癌细胞增殖和迁移的影响。 方法 人正常口腔上皮细胞系(HGF-1)和口腔鳞状细胞癌细胞株(YD-38、MK-1)购自美国典型培养库(ATCC);采用实时定量PCR(RT-PCR)技术检测口腔鳞状细胞癌组织和癌细胞中miR-1301的水平;采用细胞计数试剂盒-8(CCK-8)法检测调控miR-1301的表达水平后OSCC细胞的增殖能力;划痕愈合实验检测调控miR-1301的水平后细胞的迁移能力。 结果 和正常口腔上皮细胞HGF-1(4.32±0.86)相比,OSCC细胞YD-38(2.25±0.24)和MK-1(3.32±0.85)中miR-1301的水平显著下调(均P<0.05);稳定转染miR-1301模拟物后继续培养细胞24、48、72 h,细胞的增殖水平分别为(0.26±0.02)、(0.32±0.03)、(0.42±0.04),miR-NC组的水平为(0.30±0.02)、(0.52±0.05)、(0.89±0.07),转染miR-1301模拟物后,细胞的增殖能力显著下调(均P<0.05),而在12 h时2组细胞增殖情况比较差异无统计学意义(P>0.05);与miR-NC组(1.00±0.10)相比,转染miR-1301模拟物(0.65±0.05)后,YD-38细胞的迁移能力显著下调(P<0.05),而转染miR-1301抑制剂则有相反的效果。 结论 miR-1301在口腔鳞状细胞癌组织和细胞中显著下调,转染miR-1301模拟物能够抑制OSCC细胞的增殖和迁移能力,miR-1301可能为口腔鳞状细胞癌的治疗提供新的分子靶点。Abstract: Objective To investigate the effect of miRNA-1301 on the proliferation and migration of oral squamous cell carcinoma(OSCC) cells. Methods Human normal oral epithelial cell line(HGF-1) and oral squamous cell carcinoma cell line(YD-38, MK-1) were purchased from American typical culture library(ATCC). The level of miR-1301 in the oral squamous cell carcinoma tissue and cancer cells was detected by real-time quantitative PCR(RT-PCR), and the proliferation of OSCC cells after regulating the expression of miR-1301 was detected by cell counting kit-8(CCK-8). Scratch healing test was used to detect the migration ability of cells after regulating the level of miR-1301. Results The level of miR-1301 in YD-38(2.25±0.24) and MK-1(3.32±0.85) of OSCC cells were decreased significantly compared with HGF-1(4.32±0.86), P<0.05. The cell proliferation level in the miR-1301 group was 0.26±0.02, 0.32±0.03 and 0.42±0.04, and that in the miR-NC group was 0.30±0.02, 0.52±0.05 and 0.89±0.07 respectively. After transfection of miR-1301 mimics, the cell proliferation was significantly decreased(P<0.05), but there was no significant difference between the two groups at 12 h(P>0.05). The migration of YD-38 cells was significantly decreased after transfection of miR-1301 mimics compared with the miR-NC group(P<0.05), however, transfection of miR-1301 inhibitor had the opposite effect. Conclusion MiR-1301 is significantly down regulated in OSCC tissues and cells. Transfection of miR-1301 can inhibit the proliferation and migration of OSCC cells. MiR-1301 may provide a new molecular target for the treatment of OSCC.
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Key words:
- Oral squamous cell carcinoma /
- MiR-1301 /
- Cell proliferation /
- Cell migration
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