The invention discloses the application of cyclic RNA as a molecular marker of colorectal cancer. For the first time, the present invention has found that hsa_circ_0005758 is related to colorectal cancer, and the expression of hsa_circ_0005758 is decreased in plasma of patients with colorectal cancer. Therefore, the expression of hsa_circ_0005758 in subjects can be detected to determine whether the subjects have colorectal cancer or whether there is a risk of colorectal cancer. The hsa_circ_0005758 of the invention can be used as a molecular marker for the diagnosis and treatment of colorectal cancer, and can realize the early diagnosis of colorectal cancer. It can also be used as an effective target for screening the diagnosis and treatment of colorectal cancer, and can be made into diagnostic kits, test papers, chips and other diagnostic tools. At the same time, the invention also proves that hsa_circ_0005758 can inhibit the proliferation of intestinal cancer cells, so it can be used in the field of antineoplastic drugs.
【技术实现步骤摘要】
环状RNA作为结直肠癌分子标志物的应用
本专利技术属于生物医药领域,特别涉及环状RNA作为结直肠癌分子标志物的应用。
技术介绍
由于胃肠道肿瘤早期症状不明显,筛查指标特异性不高,因此,早期发现、早期诊断成为一大难题,并且术后复发检测指标精确性及敏感性尚不理想,环状RNA的研究为胃肠道肿瘤早期诊断带来了曙光。环状RNA属于非编码RNA,由外显子和或内含子经非共价连接形成的闭合RNA(Guarnerio,J.,etal.,OncogenicRoleofFusion-circRNAsDerivedfromCancer-AssociatedChromosomalTranslocations.Cell,2016.166(4):p.1055-1056.)。环状RNA特征主要有以下几点:①环状RNA广泛存在于真核生物体内,丰度高,具有时空特异性的特点;②不具有5’端帽子及3’端尾巴(ployA)结构,因而不被RNA核糖核酸酶剪切,在真核生物体内具有结构稳定性的特点;③多具有高度保守序列,在生物进化过程中多数不发生变异;④可在人类血清外泌体中广泛存在,且在肿瘤组织中具有特异性表达 ...
【技术保护点】
1.环状RNA作为结直肠癌分子标志物的应用,其特征在于:所述的环状RNA为hsa_circ_0005758。
【技术特征摘要】
1.环状RNA作为结直肠癌分子标志物的应用,其特征在于:所述的环状RNA为hsa_circ_0005758。2.环状RNA在制备用于诊断结直肠癌的试剂盒、试纸、芯片、高通量测序平台、外泌体或脂质体中的应用,其特征在于:所述的环状RNA为hsa_circ_0005758。3.根据权利要求2所述的应用,其特征在于:所述的试剂盒和试纸均包括用于诊断hsa_circ_0005758的引物或探针;所述的用于诊断hsa_circ_0005758的引物的核苷酸序列为:上游引物:5'-gcatagtgccaccagctgtt-3';下游引物:5'-tctggtttggggtgactgtc-3';所述的高通量测序平台包括用于诊断hsa_circ_0005758的引物或探针;所述的用于诊断hsa_circ_0005758的引物的核苷酸序列为:上游引物:5'-gcatagtgccaccagctgtt-3';下游引物:5'-gcctggtaaaggtacagcagta-3'。4.环状RNA在制备用于检测hsa_circ_0005758表达水平的试剂中的应用,其特征在于:所述的环状RNA为hsa_c...
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