Abstract

背景与目的小细胞肺癌(small cell lung cancer, SCLC)约占肺癌的15%,由于较早发生血行及淋巴转移,SCLC患者的预后差,其具体机制尚不明确。研究发现LncRNA(noncoding RNA, ncRNA)在肿瘤的发生、发展、转移、凋亡中起着重要的作用。本研究旨在探讨LncRNA AK09398在SCLC组织标本中的表达及临床意义。方法通过qRT-PCR法检测LncRNA AK09398在118例临床资料完整的SCLC肺癌组织及正常肺组织标本中的表达,分析其表达与患者临床病理特征及预后的关系。结果LncRNA AK09398在肺癌癌组织中的平均表达水平为(7.813±0.373),与癌旁组织(1.782±0.116)及正常肺组织(1.209±0.200)比较,差异有统计学意义(F=58.41, P < 0.001)。LncRNA AK09398在SCLC组织标本中的表达较癌旁组织明显增高。LncRNA AK09398的表达与患者的年龄、性别无关,差异无统计学意义(P均 > 0.05);与疾病分期、淋巴结转移及远处转移、化疗敏感性及生存状态明显相关,差异有统计学意义(P均 < 0.05)。高表达LncRNA AK09398患者的总生存时间及无进展生存时间均较低表达者明显缩短;Cox多因素回归模型分析提示,LncRNA AK09398的表达、远处转移及临床分期是SCLC独立的预后因素(P < 0.05)。结论LncRNA AK09398参与调节SCLC的发生发展,可能作为潜在的SCLC预后评估的分子标志物。

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