长链非编码RNA TTTY15/MIF-AS1在HPV感染宫颈癌组织中的表达及其与细胞自噬的关系

Expression of long non-coding RNA TTTY15/MIF-AS1 in cervical cancer tissues and its relationship with autophagy in HPV infection

  • 摘要: 目的 探讨长链非编码RNA(LncRNA) TTTY15/MIF-AS1在人乳头瘤病毒(HPV)感染宫颈癌组织中的表达及其与细胞自噬的关系。方法 选择2018年12月-2021年12月天津市第五中心医院妇产科收治的宫颈癌患者82例为宫颈癌组,选择同期医院进行宫颈检查的宫颈低级别上皮内病变(LSIL)和宫颈高级别上皮内病变(HSIL)患者各50例分别作为LSIL组和HSIL组。采用免疫组化法检测研究对象宫颈组织中LncRNA TTTY15、LncRNA MIF-AS1相对表达量。采用实时荧光定量聚合酶链式反应(RT-PCR)扩增自噬通路基因自噬相关基因-12(ATG12)、BECN1和微管相关蛋白1A/1B轻链3B(MAP1LC3B),均以2-ΔΔct法计算其相对表达量。结果 宫颈癌组、HSIL组和LSIL组LncRNA TTTY15、LncRNA MIF-AS1、ATG12、BECN1和MAP1LC3B基因相对表达量差异有统计学意义(P<0.05),其中宫颈癌组高于HSIL组和LSIL组,HSIL组高于LSIL组(P<0.05);不同淋巴结转移、肿瘤大小和分化状态宫颈癌患者LncRNA TTTY15相对表达量差异有统计学意义(P<0.05);不同淋巴结转移和分化状态宫颈癌患者LncRNA MIF-AS1相对表达量比较差异有统计学意义(P<0.05);宫颈癌患者宫颈组织中LncRNA TTTY15、LncRNA MIF-AS1相对表达与自噬通路基因ATG12、BECN1和MAP1LC3B基因相对表达量均成正相关( P均<0.05)。结论 LncRNA TTTY15、LncRNA MIF-AS1参与高危型HPV感染宫颈癌病理进展过程,其机制可能与自噬通路有关。

     

    Abstract: OBJECTIVE To explore the expression of long non-coding RNA (LncRNA) TTTY15/MIF-AS1 in cervical cancer (CC) tissues and its relationship with autophagy in human papilloma virus (HPV) infection. METHODS A total of 82 patients with CC admitted to Obstetrics and Gynecology Department of Tianjin Fifth Central Hospital were enrolled as CC group between Dec. 2018 and Dec. 2021, while 50 patients with low-grade squamous intraepithelial lesions (LSIL) and 50 patients with high-grade squamous intraepithelial lesions (HSIL) who underwent cervical examinations during the same period were enrolled as LSIL group and HSIL group, respectively. The relative expression levels of LncRNA TTTY15 and LncRNA MIF-AS1 in cervical tissues were detected by immunohistochemistry. The autophagy pathway genesautophagy-related gene-12 (ATG12), BECN1, microtubule-associated protein 1 light chain 3 beta (MAP1LC3B) were amplified by real-time quantitative polymerase chain reaction (RT-PCR), and their relative expression levels were calculated by 2-ΔΔct method. RESULTS There were significant differences in relative expression levels of LncRNA TTTY15, LncRNA MIF-AS1, ATG12, BECN1 and MAP1LC3B among CC group, HSIL group and LSIL group (P<0.05), which were the highest in CC group, followed by HSIL group and LSIL group (P<0.05). There were significant differences relative expression level of LncRNA TTTY15 among CC patients with different lymph node metastasis, tumor size and differentiation status (P<0.05). There were significant differences relative expression level of LncRNA MIF-AS1 in CC patients with different lymph node metastasis and differentiation status (P<0.05). The relative expression levels of LncRNA TTTY15 and LncRNA MIF-AS1 in cervical tissues were positively correlated with relative expressions of autophagy pathway genes (ATG12, BECN1, MAP1LC3B) (P<0.05). CONCLUSION LncRNA TTTY15 and LncRNA MIF-AS1 are involved in the pathological progression of cervical cancer in high-risk HPV infection, and the mechanism may be related to autophagy pathway.

     

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