长链非编码RNA（lncRNA）是一类长度大于200个核苷酸转录本,通过调控DNA、RNA及蛋白质的表达和功能,参与肿瘤发生、发展并发挥重要作用的RNA,近年来lncRNA成为恶性肿瘤早期诊断和预后标志物研究新的关注方向。Linc-UBC1作为一种新发现的lncRNA,在多种恶性肿瘤如肺癌、胃癌、结直肠癌、宫颈癌、卵巢癌、食管鳞癌等中异常高表达,可通过作为竞争性RNA（ceRNA）、参与信号通路等促进肿瘤细胞的增殖、迁移、侵袭、细胞周期进展、细胞凋亡和上皮间充质转化（EMT）等过程;高表达的linc-UBC1能够增加恶性肿瘤的耐药性,其表达水平与肿瘤分期、淋巴结转移和原发肿瘤远处转移呈正相关;linc-UBC1有望成为许多恶性肿瘤的新型的生物标志物、预后预测因子和治疗靶点,但其具体的调控机制仍处于研究的早期阶段,有待进一步深入研究。文章就目前linc-UBC1在恶性肿瘤发生和发展中的作用研究进展进行综述。

Long non-coding RNA（lncRNA）is a class of transcripts with a length of more than 200 nucleotides．It is involved in the occurrence and development of tumors and plays an important role by regulating the expression and function of DNA,RNA and protein．In recent years,lncRNA has become a new research direction for early diagnosis and prognosis of malignant tumors．As a newly discovered lncRNA,linc-UBC1 is abnormally highly expressed in a variety of malignant tumors such as lung cancer,gastric cancer,colorectal cancer,cervical cancer,ovarian cancer,and esophageal squamous cell carcinoma．It can promote the proliferation,migration,invasion,cell cycle progression,cell apoptosis and EMT of tumor cells by acting as a competing endogenous RNA（ceRNA）and participating in signaling pathways．High expression of linc-UBC1 can increase the drug resistance of malignant tumors,and its expression level is positively correlated with tumor stage,lymph node metastasis and distant metastasis of primary tumors．linc-UBC1 is expected to become a new biomarker,prognostic predictor and therapeutic target for many malignant tumors,while its specific regulatory mechanism is still in the early stage of research and needs further in-depth study．This article reviews the current research progress of linc-UBC1 in the occurrence and development of malignant tumors．

在过去的几十年中,随着RNA生物学的深入研究,越来越多的证据表明,非编码RNA（ncRNA）对包括癌症在内的多种疾病进展起着关键作用,同时在作为生物标志物和治疗靶点方面表现出了巨大的潜力。在全球范围内,消化道（GI）肿瘤是肿瘤相关死亡的主要原因,目前消化道肿瘤晚期患者的生存率依然很低。既往大量研究报道了ncRNA中,特别是长链非编码RNA（lncRNA）在消化道肿瘤发生发展中发挥重要作用。本文将着重阐述lncRNA在消化道肿瘤分子生物学中的作用,旨在为深入理解lncRNA在消化道肿瘤发生发展机制以及临床转化应用提供新的思路和线索。

In recent decades,an increasing body of evidence has pointed to the pivotal roles of non-coding RNAs（ncRNAs）,particularly long non-coding RNAs（lncRNAs）,in the development of various diseases,including cancer．Meanwhile,ncRNAs have been shown great potential as biomarker and therapeutic target．Gastrointestinal（GI）cancers are a leading cause of cancer-related mortality globally and the survival rate of advanced GI cancer patients is still very low．Extensive research has underscored the significant involvement of lncRNAs in the initiation and progression of GI cancers．This review aims to offer a comprehensive overview of lncRNAs,shedding light on their roles in the molecular biology of GI cancers．By synthesizing previous studies,this review seeks to provide new insights into the mechanisms underlying lncRNAs' contribution to GI cancer development and their potential clinical applications．

目的 探索长链非编码RNA LINC00672在肺癌组织中的表达及其与患者预后的关系。方法 采用实时荧光定量PCR技术检测LINC00672在75对肺癌组织和癌旁正常组织中的表达,分析其在癌组织中的表达水平与肺癌患者临床分期和预后的关联。结果 LINC00672在肺癌组织中的表达显著低于癌旁正常组织(P=0.026),LINC00672高表达与低表达相比能显著降低肺癌患者的死亡率(死亡风险比=0.46;95%置信区间=0.23~0.95;P=0.036),延长患者中位生存期(34个月 vs 18个月,P=0.027)。并且,LINC00672与肺癌预后的关联在低年龄组(<60 a)、吸烟者和非饮酒者中更为显著。进一步相乘交互作用分析显示LINCOO672与饮酒在肺癌死亡风险上具有显著的交互效应(P=0.049)。然而,LINC00672的表达水平在不同分期、T、N、M患者来源的肺癌组织中的表达无显著性差异。结论 LINC00672与肺癌发生发展存在关联,可用于预测肺癌患者的预后。

Objective To explore the expression status of long non-coding RNA LINC00672 in lung cancer tissues and its correlation with survival of lung cancer. Methods We applied the real-time PCR method to measure the expression level of LINC00672 in 53 pairs of lung cancer tissues and adjacent lung normal tissues, and analyzed the correlation between its expression and survival of lung cancer. Results LINC00672 was significantly down-regulated in lung cancer tissues than their adjacent lung normal tissues (P=0.026). Compared to those with low expression level of LINC00672, patients with high expression level of LINC00672 exerted a significant long median survival time than those with low expression level (34 vs 18 months, P=0.027). High LINC00672 expression also contributed to low mortality rate than low LINC00672 expression (hazard ratio=0.46, 95% confidence interval =0.23-0.95, P=0.036). Meanwhile, the correlation was more evident in those low age groups (< 60 years), smokers and non-drinkers. There was also a significant interaction between LINC00672 and drinking on affecting death risk of lung cancer. However, no significant association was observed between LINC00672 expression and clinical stages as well as T, N, M status. Conclusion LINC00672 is correlated with development of lung cancer, which may be a valuable biomarker to predict lung cancer prognosis.

      长链非编码RNA（lncRNA）是一类长度大于200个核苷酸转录本，通过调控DNA、RNA及蛋白质的表达和功能，参与肿瘤发生、发展并发挥重要作用的RNA，近年来lncRNA成为恶性肿瘤早期诊断和预后标志物研究新的关注方向。Linc-UBC1作为一种新发现的lncRNA，在多种恶性肿瘤如肺癌、胃癌、结直肠癌、宫颈癌、卵巢癌、食管鳞癌等中异常高表达，可通过作为竞争性RNA（ceRNA）、参与信号通路等促进肿瘤细胞的增殖、迁移、侵袭、细胞周期进展、细胞凋亡和上皮间充质转化（EMT）等过程；高表达的linc-UBC1能够增加恶性肿瘤的耐药性，其表达水平与肿瘤分期、淋巴结转移和原发肿瘤远处转移呈正相关；linc-UBC1有望成为许多恶性肿瘤的新型的生物标志物、预后预测因子和治疗靶点，但其具体的调控机制仍处于研究的早期阶段，有待进一步深入研究。文章就目前linc-UBC1在恶性肿瘤发生和发展中的作用研究进展进行综述。

       Long non-coding RNA（lncRNA）is a class of transcripts with a length of more than 200 nucleotides．It is 

involved in the occurrence and development of tumors and plays an important role by regulating the expression and function of DNA，RNA and protein．In recent years，lncRNA has become a new research direction for early diagnosis and prognosis of malignant tumors．As a newly discovered lncRNA，linc-UBC1 is abnormally highly expressed in a variety of malignant tumors such as lung cancer，gastric cancer，colorectal cancer，cervical cancer，ovarian cancer，and esophageal squamous cell carcinoma．It can  promote the proliferation，migration，invasion，cell cycle progression，cell apoptosis and EMT of tumor cells by acting as a competing endogenous RNA（ceRNA）and participating in signaling pathways．High expression of linc-UBC1 can increase the drug resistance of malignant tumors，and its expression level is positively correlated with tumor stage，lymph node metastasis and distant metastasis of primary tumors．linc-UBC1 is expected to become a new biomarker，prognostic predictor and therapeutic target for many malignant tumors，while its specific regulatory mechanism is still in the early stage of research and needs further in-depth study．This article reviews the current research progress of linc-UBC1 in the occurrence and development of malignant tumors．