烟酰胺磷酸核糖基转移酶在结肠癌中的表达、功能及生物信息学分析
DOI: 10.3971/j.issn.1000-8578.2018.18.0928
Keywords: 生物信息学,结肠癌,NAMPT,Identification and Integrated Analysis of Key Biomarkers for Diagnosis and Prognosis of Pancreatic Adenocarcinoma,Autophagy Related Protein 5 Regulates Colon Cancer Cell Senescence Through p53/p21 Pathway,Effects of MicroRNA-4465 on Apoptosis and Invasion of Colon Cancer Cells,Key Genes and Signaling Pathways in Small Cell Lung Cancer,Effect of Noscapine on Drug Resistance of 5-Fluorouracil-resistant Human Colon Cancer Cell Lines HT-29/5-Fu, LoVo/5-Fu and SW480/5-Fu,Regulatory Effect of Astragaloside A on Proliferation and Apoptosis of Human Colon Cancer SW480 Cell Line,Effect of miR-7 Overexpression on Biological Behavior of Colon Carcinoma HCT-116 Cells,miRNA-125a Targets SMURF1 to Regulate Biological Behavior of Colon Cancer,Effect of Overexpression of Follistatin-like Protein 1 on Downstream Genes in Cervical Cancer and Bioinformatic Analysis of Downstream Genes,Bioinformatics Analysis of Gastric Intestinal Metaplasia-related Genes and Pathways Based on GEO Database,miRNA-101 Regulates Colon Cancer Cell Invasion and Wnt/β-catenin Pathway Activation Through Targeting CDK8,Clinicopathologic Characteristics and Prognosis of Colon Cancer Patients with Different Primary Locations,Identification of Differently Expressed Genes and Pathways in Glioblastoma Multiforme Using Microarray,Correlation Between States of Hepatitis B Virus Infection, Levels of Hepatitis B Surface Antigens/Antibodies and Staging, Prognosis of Colon Cancer,Short-term Efficacy of “Head-central Mixed Way” in Laparoscopic Radical Operation of Right Colon Cancer
Abstract:
摘要 目的 探讨NAMPT在结肠癌组织中的表达并利用生物信息学分析其理化性质、蛋白结构、互作蛋白、细胞定位及对其功能进行预测分析。方法 利用TCGA数据库及即时聚合酶链锁反应(qPCR)技术验证NAMPT在结肠癌组织中的表达;利用siRNA敲除SW480细胞中NAMPT表达后测定细胞增殖能力;利用生物信息学ProtParam、Jpred4.0、Genecards、String等软件对NAMPT理化性质及功能进行预测分析。结果 在结肠癌组织中,NAMPT mRNA水平表达明显高于相应的癌旁组织;沉默SW480细胞中NAMPT后细胞增殖能力减弱;生物信息学提示NAMPT由491个氨基酸组成,为不稳定酸性亲水性蛋白质;二级结构预测发现其有14个α螺旋,17个β折叠;三级结构全球性模型质量估测(GMQE)评分0.97;预测结果显示NAMPT并无功能结构域,其仅有一个保守结构域。蛋白定位发现其在细胞外、细胞核以及胞质中均有大量表达,其参与的生物学活动主要包括参与NAD+生物合成、昼夜节律、应激、代谢反应及衰老等。结论 在结肠癌患者组织中NAMPT高表达,可参与多种生物学过程,并可通过不同途径调节肿瘤生物学行为
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