LncRNA GAS5基因启动子区5 bp插入/缺失多态性在广西地区人群中的分布

目的探讨广西地区人群中LncRNA GAS5基因启动子区1个功能性插入/缺失位点(rs145204276I/D)多态性的分布特点,并分析广西地区人群与其他地区人群rs145204276I/D位点多态性的分布差异。方法采用SNPscan技术对289例广西地区人群GAS5基因rs145204276I/D位点进行基因分型检测,统计其基因型和等位基因在广西地区人群不同性别间的分布,并分析其多态性与国际千人基因组计划(1000 genome project)数据库公布的欧洲人群(European,EUR)、日本人群(Japanese in Tokyo;JPT,)、西亚人群(South Asian,SAS)、美国人群(Ad Mixed American,AMR)、非洲人群(African,AFR)、北京人群(Han Chinese in Beijing,CHB)以及文献报道的南京、吉林、重庆和昆明人群的分布差异。结果广西地区人群GAS5基因rs145204276I/D位点I/I、I/D和D/D基因型频率分别为48.4%、43.6%和8.0%,I和D等位基因频率分别为70.2%和29.8%。rs145204276I/D基因型和等位基因频率在广西地区人群不同性别间比较差异无统计学意义(P0.05)。广西地区人群GAS5基因rs145204276I/D位点的基因型和等位基因频率与EUR、AFR、AMR和JPT人群比较差异均有统计学意义(P均0.05),而与CHB、南京、吉林、重庆和昆明人群比较差异均无统计学意义(P0.05)。结论广西地区人群LncRNA GAS5基因rs145204276I/D位点基因多态性在男性和女性人群中分布无差异,而其多态性与其他地区人群间比较存在不同程度的差异。     

LINC01224靶向miR-125b对口腔鳞癌细胞增殖及凋亡的影响

摘要：目的?探讨长链非编码RNA(LncRNA)LINC01224是否通过调控微小RNA-125b(miR-125b)的表达，从而影响口腔鳞癌(OSCC)细胞增殖及凋亡。方法?采用实时荧光定量聚合酶链反应(qRT-PCR)检测OSCC患者癌组织及癌旁组织中LINC01224的表达水平；体外培养OSCC细胞系CAL-27，将si-NC、si-LINC01224、si-LINC01224与anti-miR-NC、si-LINC01224与anti-miR-125b转染至CAL-27细胞；甲基噻唑基四唑(MTT)试验检测细胞增殖能力；流式细胞术检测细胞周期与细胞凋亡率；双荧光素酶报告试验验证LINC01224与miR-125b的靶向结合关系；western blot检测半胱氨酰天冬氨酸特异性蛋白酶3前体蛋白(pro-caspase-3)、增殖标记蛋白细胞增殖核抗原67(Ki67)、活化的含半胱氨酸的天冬氨酸蛋白水解酶3(clv-caspase-3)、P21蛋白的表达水平。结果?与癌旁组织相比，OSCC患者癌组织中LINC01224的表达水平(1.00±0.05 vs 2.43±0.17)显著升高(t=94.345，P<0.05)，miR-125b的表达水平(0.98±0.06 vs 0.22±0.02)显著降低(t=14.838，P<0.05)；与si-NC组比较，si-LINC01224组细胞存活率[(100.02±6.73)% vs (47.94±4.69)%]显著降低(t=19.047，P<0.05)，G1期细胞比例[(31.03±3.01)% vs (42.29±4.12)%]显著增加(t=6.615，P<0.05)，S期细胞比例[(34.18±3.38)% vs (23.49±2.57)%]显著减少(t=7.553，P<0.05)，细胞凋亡率[(8.10±0.92)% vs (24.17±1.74)%]显著升高(t=24.494，P<0.05)，Ki67、pro-caspase-3蛋白水平显著降低(P<0.05)，P21、clv-caspase-3蛋白水平显著升高(P<0.05)；双荧光素酶报告试验证实LINC01224与miR-125b靶向结合；与si-LINC01224+anti-miR-NC组比较，si-LINC01224+anti-miR-125b组细胞存活率[(48.03±4.57)% vs (90.01±5.59)%]显著升高(t=17.442，P<0.05)，细胞凋亡率[(24.11±1.58)% vs (12.81±1.12)%]显著降低(t=17.504，P<0.05)，G1期细胞比例[(42.27±4.10)% vs (35.09±3.18)%]显著减少(t=4.151，P<0.05)，S期细胞比例[(23.53±2.54)% vs (30.03±2.96)%]显著增加(t=4.999，P<0.05)，pro-caspase-3、Ki67蛋白水平显著升高(P<0.05)，clv-caspase-3、P21蛋白水平显著降低(P<0.05)。结论?LINC01224能够靶向调控miR-125b的表达，从而促进OSCC细胞增殖及抑制细胞凋亡。     

Long Non-Coding RNA NANCI/NKX2-1 Duplex Impacts Prognosis in Stage I Non-Small-Cell Lung Cancer

BackgroundNANCI, an intergenic long non-coding RNA (lncRNA) is essential for buffering NKX2-1 expression during embryonic development and in adult tissue. We analyzed NANCI and NKX2-1 in human lung embryonic samples and adult lung tissues and evaluated their potential as prognostic markers in stage I non-small cell lung cancer (NSCLC).Methods and resultsNANCI and NKX2-1 expression was assessed by TaqMan assays in 18 human embryonic samples from 8 to 13 weeks, 59 non-tumoral (NT) lung tissue samples, and 98 stage I NSCLC tumor samples. NANCI and NKX2-1 expression in embryonic and NSCLC samples were downregulated in comparison to adult NT tissue. Patients with low expression of NANCI had shorter disease-free survival (DFS) and overall survival (OS) than those with high levels (47.6 vs 69.3 months, P = 0.032 and 57.7 vs 77.6 months, P = 0.021, respectively). When the expression levels of NANCI and NKX2-1 were evaluated in combination, four groups were identified (high NANCI/high NKX2-1, low NANCI/high NKX2-1, high NANCI/low NKX2-1 and low NANCI/low NKX2-1) with differential impact on DFS (P = 0.042) and OS (P = 0.024). Interestingly, the high NANCI/high NKX2-1 duplex group had longer DFS and OS than the other three groups (71.25 vs 46.3 months, P = 0.009 and 81.3 vs 56.1 months, P = 0.004, respectively). In the multivariate analysis, the high NANCI/high NKX2-1 duplex was identified as an independent prognostic factor for longer DFS (HR 0.346, 95% CI, 0.169–0.709; P = 0.004) and OS (HR 0.309, 95% CI, 0.121–0.786; P = 0.014).ConclusionsNANCI and the NANCI-NKX2-1 duplex impacts prognosis in stage I NSCLC patients.     

支气管哮喘病儿外周血单核细胞中LncRNA MEG3的表达及其与肺功能、免疫功能的相关性研究

目的 探讨支气管哮喘病儿外周血单核细胞中长链非编码RNA母系表达基因3(LncRNA MEG3)的表达及其与肺功能和免疫功能的相关性.方法 选取2017年10月至2018年9月安阳市妇幼保健院收治的支气管哮喘病儿60例为观察组,根据疾病严重程度分为轻度组(20例),中度组(20例),重度组(20例),同时选取同期体检的...     

LncRNA BC200在大肠癌组织中的表达及临床意义

目的 探讨LncRNA BC200在大肠癌组织中的表达及临床意义.方法 将2018年6月至2020年6月深圳市蛇口人民医院收治的90例大肠癌患者作为研究对象,收集患者术中取出的新鲜癌组织及癌旁组织(经病理证实为正常大肠组织),分别经液氮冷冻和石蜡包埋处理,采用逆转录实时荧光定量聚合酶链式扩增(reverse trans...     

Knockdown of LncRNA SNHG7 inhibited epithelial-mesenchymal transition in prostate cancer though miR-324-3p/WNT2B axis in vitro

It is identified that long non-coding RNAs (lncRNAs) play important roles in cancer progression and metastasis. LncRNA SNHG7 was reported to play an oncogenic role in the progression of cancers including prostate cancer. However, its potential regulatory mechanism of endothelial-mesenchymal transition in PCa remains unclear. In this study, We found a lncRNA SNHG7 was overexpressed in PCa cell lines and tissues. LncRNA SNHG7 promotes prostate cancer migration and invasion by modulating EMT. Further study indicated that lncRNA SNHG7 acts as a sponge for miRNA-324-3p and positively regulates WNT2B by a sponge effect. Moreover, We confirmed that WNT2B, an important protein in the Wnt signal pathway, promotes the malignant phenotype of PCa cells and mediated the biological effects exerted by lncRNA SNHG7. Overall, our study suggested that lncRNA SNHG7 could promote PCa EMT via miR-324-3p and WNT2B in vitro. The lncRNA SNHG7/miR-324-3p /WNT2B axis regulatory network might provide a potential new therapeutic strategy for PCa treatment.     

丹参酮调控LncRNA DLX6-AS1对LPS诱导的肺泡Ⅱ型上皮细胞损伤的作用

目的 探讨丹参酮对脂多糖(LPS)诱导的肺泡Ⅱ型上皮细胞损伤的影响及其可能作用机制.方法 采用LPS诱导的肺泡Ⅱ型上皮细胞建立急性肺损伤模型,随机分组:空白对照组、LPS组、LPS+丹参酮L组、LPS+丹参酮M组、LPS+丹参酮H组、LPS+si-NC组、LPS+si-DLX6-AS1组、LPS+丹参酮+pcDNA-D...