BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated.AIM To investigate the role of microRNA-363-3p(miR-363-3p)in the progression of colorectal cancer.METH...BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated.AIM To investigate the role of microRNA-363-3p(miR-363-3p)in the progression of colorectal cancer.METHODS Real-time polymerase chain reaction was performed to detect miRNA expression in human colorectal cancer tissues and paired normal colorectal tissues.PITA 6 was utilized to predict the targets of miR-363-3p.Dual-luciferase reporter system was used to validate the target of miR-363-3p.Plate colony formation assay and wound-healing assay were performed to evaluate cancer cells’clonogenic survival ability and migration ability,respectively.Cell proliferation was examined by cell counting kit-8 assay.Immunohistochemical staining was used to determine the expression level of interferon-induced transmembrane protein 1(IFITM1)in colorectal cancer tissues and adjacent tissues.The TCGA and GTEx databases were used to compare the expression levels of IFITM1 mRNA in colorectal cancer tissues and normal colorectal tissues and analyze the correlation between the expression levels of IFITM1 mRNA and overall survival and disease-free survival of patients.A colorectal cancer cell line with a deficiency of IFITM1 was constructed,and the regulation effect of IFITM1 on the clonogenic growth of colorectal cancer cells was clarified.RESULTS MiR-363-3p was decreased in colorectal cancer tissues compared to normal colorectal tissues.IFITM1 was characterized as a direct target of miR-363-3p.Overexpression of miR-363-3p led to decreased clonogenic survival,proliferation,and migration of colorectal cancer cells,which could be reversed by forced IFITM1 expression.CONCLUSION MiR-363-3p can constrain clonogenic survival,proliferation,and migration of colorectal cancer cells via targeting IFITM1.展开更多
目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(...目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(PCR)法检测IFITM3、B细胞淋巴瘤/白血病-2相关X蛋白(BAX)、B细胞淋巴瘤/白血病-2(Bcl-2)表达,CCK-8法检测细胞活力,划痕实验检测细胞迁移能力,Transwell实验检测细胞侵袭能力。结果酶切结果证实IFITM3过表达载体构建成功。与正常对照组及过表达对照组比较,过表达组MHCC97H细胞IFITM3 m RNA表达量上调,光密度值(OD)升高,细胞迁移速率加快,细胞侵袭数目增加,Bcl-2 m RNA表达水平上调,BAX m RNA表达水平下调,差异均有统计学意义(P﹤0.01)。结论过表达IFITM3能显著促进MHCC97H胆囊癌细胞增殖、迁移及侵袭,与调控Bcl-2及BAX表达有关。展开更多
Objective Current commercially available immunological tests cannot be used for discriminating active tuberculosis(TB)from latent TB infection.To evaluate the value of biomarker candidates in the diagnosis of active T...Objective Current commercially available immunological tests cannot be used for discriminating active tuberculosis(TB)from latent TB infection.To evaluate the value of biomarker candidates in the diagnosis of active TB,this study aimed to identify differentially expressed genes in peripheral blood mononuclear cells(PBMCs)between patients with active TB and individuals with latent TB infection by transcriptome sequencing.Methods The differentially expressed genes in unstimulated PBMCs and in Mycobacterium tuberculosis(Mtb)antigen-stimulated PBMCs from patients with active TB and individuals with latent TB infection were identified by transcriptome sequencing.Selected candidate genes were evaluated in cohorts consisting of 110 patients with TB,30 individuals with latent TB infections,and 50 healthy controls by quantitative real-time RT-PCR.Receiver operating characteristic(ROC)curve analysis was performed to calculate the diagnostic value of the biomarker candidates.Results Among the differentially expressed genes in PBMCs without Mtb antigen stimulation,interferon-induced protein with tetratricopeptide repeats 3(IFIT3)had the highest area under curve(AUC)value(0.918,95%CI:0.852-0.984,P<0.0001)in discriminating patients with active TB from individuals with latent TB infection,with a sensitivity of 91.86%and a specificity of 84.00%.In Mtb antigen-stimulated PBMCs,orosomucoid 1(ORM1)had a high AUC value(0.833,95%CI:0.752-0.915,P<0.0001),with a sensitivity of 81.94%and a specificity of 70.00%.Conclusion IFIT3 and ORM1 might be potential biomarkers for discriminating active TB from latent TB infection.展开更多
文摘BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated.AIM To investigate the role of microRNA-363-3p(miR-363-3p)in the progression of colorectal cancer.METHODS Real-time polymerase chain reaction was performed to detect miRNA expression in human colorectal cancer tissues and paired normal colorectal tissues.PITA 6 was utilized to predict the targets of miR-363-3p.Dual-luciferase reporter system was used to validate the target of miR-363-3p.Plate colony formation assay and wound-healing assay were performed to evaluate cancer cells’clonogenic survival ability and migration ability,respectively.Cell proliferation was examined by cell counting kit-8 assay.Immunohistochemical staining was used to determine the expression level of interferon-induced transmembrane protein 1(IFITM1)in colorectal cancer tissues and adjacent tissues.The TCGA and GTEx databases were used to compare the expression levels of IFITM1 mRNA in colorectal cancer tissues and normal colorectal tissues and analyze the correlation between the expression levels of IFITM1 mRNA and overall survival and disease-free survival of patients.A colorectal cancer cell line with a deficiency of IFITM1 was constructed,and the regulation effect of IFITM1 on the clonogenic growth of colorectal cancer cells was clarified.RESULTS MiR-363-3p was decreased in colorectal cancer tissues compared to normal colorectal tissues.IFITM1 was characterized as a direct target of miR-363-3p.Overexpression of miR-363-3p led to decreased clonogenic survival,proliferation,and migration of colorectal cancer cells,which could be reversed by forced IFITM1 expression.CONCLUSION MiR-363-3p can constrain clonogenic survival,proliferation,and migration of colorectal cancer cells via targeting IFITM1.
文摘目的探讨过表达干扰素诱导跨膜蛋白3(IFITM3)对胆囊癌细胞MHCC97H增殖、迁移、侵袭的影响。方法构建IFITM3-pc DNA3.1过表达载体,并将IFITM3-pc DNA3.1及pc DNA3.1转入MHCC97H细胞中,同时设立正常对照组。采用实时荧光定量聚合酶链反应(PCR)法检测IFITM3、B细胞淋巴瘤/白血病-2相关X蛋白(BAX)、B细胞淋巴瘤/白血病-2(Bcl-2)表达,CCK-8法检测细胞活力,划痕实验检测细胞迁移能力,Transwell实验检测细胞侵袭能力。结果酶切结果证实IFITM3过表达载体构建成功。与正常对照组及过表达对照组比较,过表达组MHCC97H细胞IFITM3 m RNA表达量上调,光密度值(OD)升高,细胞迁移速率加快,细胞侵袭数目增加,Bcl-2 m RNA表达水平上调,BAX m RNA表达水平下调,差异均有统计学意义(P﹤0.01)。结论过表达IFITM3能显著促进MHCC97H胆囊癌细胞增殖、迁移及侵袭,与调控Bcl-2及BAX表达有关。
基金supported by grants from the Thirteen-Fifth Mega-Scientific Project on“Prevention and Treatment of AIDS,Viral Hepatitis and Other Infectious Diseases”(No.2017ZX10201301-007-002)the National Natural Science Foundation of China(No.82072233).
文摘Objective Current commercially available immunological tests cannot be used for discriminating active tuberculosis(TB)from latent TB infection.To evaluate the value of biomarker candidates in the diagnosis of active TB,this study aimed to identify differentially expressed genes in peripheral blood mononuclear cells(PBMCs)between patients with active TB and individuals with latent TB infection by transcriptome sequencing.Methods The differentially expressed genes in unstimulated PBMCs and in Mycobacterium tuberculosis(Mtb)antigen-stimulated PBMCs from patients with active TB and individuals with latent TB infection were identified by transcriptome sequencing.Selected candidate genes were evaluated in cohorts consisting of 110 patients with TB,30 individuals with latent TB infections,and 50 healthy controls by quantitative real-time RT-PCR.Receiver operating characteristic(ROC)curve analysis was performed to calculate the diagnostic value of the biomarker candidates.Results Among the differentially expressed genes in PBMCs without Mtb antigen stimulation,interferon-induced protein with tetratricopeptide repeats 3(IFIT3)had the highest area under curve(AUC)value(0.918,95%CI:0.852-0.984,P<0.0001)in discriminating patients with active TB from individuals with latent TB infection,with a sensitivity of 91.86%and a specificity of 84.00%.In Mtb antigen-stimulated PBMCs,orosomucoid 1(ORM1)had a high AUC value(0.833,95%CI:0.752-0.915,P<0.0001),with a sensitivity of 81.94%and a specificity of 70.00%.Conclusion IFIT3 and ORM1 might be potential biomarkers for discriminating active TB from latent TB infection.
