Abstract

目的探讨MicroRNA-191(miR-191)与T淋巴母细胞性白血病/淋巴瘤(T-ALL/LBL)的相关性及其作用机制。方法采用荧光实时定量PCR(qRT-PCR)法检测20例T-ALL/LBL患者肿瘤组织和20例淋巴结反应性增生(LRH)患者淋巴结组织中miR-191的表达,并分析其与临床预后的关系。构建反义miR-191慢病毒载体(LV-miR-191-KD)和阴性对照载体(LV-NC-GFP)并转染T-ALL细胞系Jurkat细胞,qRT-PCR法检测miR-191的表达水平。分别用CCK-8法和流式细胞术检测下调miR-191后的细胞活性、细胞周期和凋亡。结果T-ALL/LBL患者组miR-191表达水平明显高于LRH患者组(1.875±0.079对1.000,P=0.001),以miR-191表达量的中位数为界,将T-ALL/LBL患者分为高表达组(10例)与低表达组(10例),高表达组患者3年OS率明显低于低表达组(26%对82%,P=0.021)。转染48 h后,LV-miR-191-KD组Jurkat细胞miR-191表达水平(0.578±0.012)较LV-NC-GFP组(1.011±0.053)和未转染对照组(1.000)显著降低(P值分别为0.018和0.021),细胞凋亡比例显著升高(P值均<0.05),细胞周期阻滞于G0/G1期,并抑制从G1期向S期转化。结论miR-191在T-ALL/LBL的发生、发展过程中起促进作用,可能作为T-ALL/LBL治疗的潜在靶点。

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.