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多形性胶质瘤母细胞瘤患者血清中miR-155、miR-365和BDNF的表达及意义 被引量:3

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摘要 目的探讨多形性胶质瘤母细胞瘤(glioblastoma multiforme,GBM)患者血清中miR-155、miR-365和脑源性神经营养因子(brain derived neurophic factor,BDNF)的表达及其相关性。方法运用荧光素报告载体系统检测miR-155和miR-365直接调控的靶基因BDNF。并收集54例GBM患者和12例Ⅰ、Ⅱ级胶质瘤患者的术前外周血标本,以20例健康志愿者的外周血标本作为对照,应用实时荧光定量PCR和酶联免疫吸附试验技术分别检测GBM和Ⅰ、Ⅱ级胶质瘤患者血清中miR-155、miR-365和BDNF的表达水平,分析miR-155、miR-365与BDNF的相关性。结果 BDNF是miR-155和miR-365直接调控的靶基因,miR-155或miR-365均可下调BDNF蛋白的表达;GBM患者血清中miR-155与miR-365的表达水平分别为6.59±1.22、6.96±1.43,两者分别与健康志愿者(1.19±0.24、1.07±0.16)比较,差异均有统计学意义(P<0.01);Ⅰ、Ⅱ级胶质瘤患者血清中miR-155与miR-365的表达水平分别为1.35±0.41、1.29±0.39,两者分别与健康志愿者比较,差异均无统计学意义(P>0.05)。GBM患者血清中的BDNF表达水平为(5.52±1.23)ng/mL,与健康志愿者[(12.55±2.11)ng/mL]比较,差异有统计学意义(P<0.01);Ⅰ、Ⅱ级胶质瘤患者BDNF表达水平为(11.83±3.43)ng/mL,与健康志愿者比较,差异无统计学意义(P>0.05)。相关性分析发现,miR-155与miR-365的表达呈正相关(rs=0.875,P<0.01),miR-155、miR-365的表达均与BDNF呈负相关(rs=-0.819,rs=-0.774,P<0.01)。结论 miR-155、miR-365和BDNF三者表达与GBM的发生发展密切相关,其有可能成为判断GBM疗效及预后的潜在生物学指标。
出处 《广东医学》 CAS CSCD 北大核心 2012年第15期2310-2312,共3页 Guangdong Medical Journal
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