项目来源
台湾省政府科研基金(GRB)
项目主持人
庄宗显
项目受资助机构
台湾省卫生研究院免疫医学研究中心
立项年度
2011
立项时间
未公开
项目编号
NSC100-2320-B400-011
研究期限
未知 / 未知
项目级别
省级
受资助金额
970.00千元台币
学科
基础医学;生物技术(医)
学科代码
未公开
基金类别
基础研究/学术补助
关键词
癌症相关的发炎反应 ; 肿瘤微环境 ; 泛素蛋白连接酶 ; 类铎受体 ; Cancer-related inflammation ; tumor microenvironment ; cancer ; E3 ubiquitin-protein ligase ; Toll-like receptor
参与者
未公开
参与机构
未公开
项目标书摘要:在肿瘤微环境内的发炎反应可经由促进肿瘤细胞增生,增进血管生成,增进癌细胞转移及扩散,颠覆免疫系统的监视,并增强对抗肿瘤化疗的抗拒来促进肿瘤的生存和发展。类铎受体(Toll-like receptors)的活化可触发发炎反应,并将发炎反应的媒介物释放到肿瘤的微环境内。Triad3A 是一个经由 Triad3 基因选择性剪接而成的蛋白质。这个蛋白质是一个 E3 泛素蛋白连接酶,以及类铎受体信号和其他炎症信号的负向调控者。在细胞中增加Triad3A 的表达可以抑制类铎受体的的活化。相反的,运用siRNA 来减少细胞内表达的Triad3A 可以增强的类铎受体的激活。人类的Triad3 基因位於染色体 7p22 上。曾有报告指出有一大肠癌的患者染色体上缺少了包括Pms2,Triad3 和Fscn1 的一小段基因。然而,Triad3 在癌症发展上的功能尚未被研究过。在这个计划中,我们假设 Triad3A 可以负向调控肿瘤细胞内类铎受体的讯息传递,并经此控制肿瘤微环境内的发炎反应,以及肿瘤的生长。我们计划使用EO771 乳腺癌细胞,以及 CT-26 结肠癌细胞来建立Triad3A 增加表达量,或降低表达量的稳定细胞株。并用这些细胞株来建立癌症动物模型以供本计划研究之使用。本计划的主要目标是:(1)评估Triad3A 在控制肿瘤的发展上的作用,(2)确定Triad3A 在对肿瘤微环境内发炎反应上调控的功能,以及(3)调查Triad3A 在肿瘤细胞内对类铎受体,以及其他的发炎反应讯息传递的调控。完成这一计划,将提供给我们关键的信息,用来评估Triad3A 是否可以成为设计策略以控制肿瘤的生长的分子标靶。
Application Abstract: Inflammation in the tumor microenvironment has been established to promote tumor development by aiding the proliferation and survival of cancer cells,promoting angiogenesis and metastasis,subverting immune surveillance,and increasing the resistance of the tumor to chemotherapy.The release of inflammatory mediators into the tumor microenvironment can be triggered through activation of Toll-like receptors(TLRs).Triad3A is a protein resulted from alternative splicing of Triad3 gene.This protein is an E3 ubiquitin-protein ligase that negatively regulates TLR and other inflammatory signalings in cells.Overexpression of Triad3A inhibits TLR activations.Conversely,reduction in endogenous Triad3A by siRNA enhances TLR activations induced by their ligands.The human Triad3 gene is located on chromosome 7p22.Chromosomal deletion of a small region at this locus,including the Pms2,Triad3 and Fscn1 genes has been linked to the development of colorectal cancer.Nevertheless,the function of Triad3 in regulation of cancer development has not yet been investigated.In this project,we hypothesize that Triad3A is capable of control cancer-related inflammation and tumor growth through negative regulation of TLR and other inflammatory signalings in cancer cells.We plan to generate Triad3A overexpressing and siRNA knockdown stable cell lines with EO771 breast cancer cells and CT-26 colon cancer cells.These cell lines will be use to establish cancer animal models for this study.The goals of this project are to:(1)assess the role of Triad3A in control of tumor development,(2)determine the function of Triad3A in regulation of inflammation in the tumor microenvironment,and(3)investigate the function of Triad3A in regulation of TLR and other inflammatory signaling in cancer cells.Completion of this project,will provide us key information as to whether Triad3 is a molecular target to design therapeutic strategies for control of tumor growth.
项目受资助省
台湾省