p63 is the master regulator of epithelial differentiation. Non-coding RNA, including miRNA and long non-coding RNA (lncRNA) regulates cell differentiation by various mechanisms. Our previous studies showed that down-expression of p63 and ?Np63 in poorly differentiated tongue squamous cell carcinoma and invasive tumor front (represents dedifferentiation and EMT-like phenotype). Down-expression of miR-138 and TINCR, while up-expression of ANCR was also observed at the same sites. These results suggest that p63, interact with non-coding RNAs, may play a pivotal role in tumor development. Based on these findings, in this project, we aim to 1): determine the expression of p63 and its isoforms, their clinical significance and correlation with cell differentiation. 2): screen and validate the differentiation-associated expression signatures of miRNA and lncRNA, and functionally analyze the correlation and interaction between p63 and non-coding RNAs. 3): investigate the mechanism of dedifferentiation mediated by p63 and non-coding RNAs. Our project will shed light on the biological role of cell dedifferentiation in tongue tumorigenesis/development, and provide potential target for induced differentiation therapy of malignancies.
p63是上皮分化的关键调控蛋白,而非编码RNA包括 miRNA和长链非编码RNA(lncRNA)可通过多种作用方式调节细胞分化。课题组前期研究表明:低分化舌鳞癌以及肿瘤侵袭前沿(呈现失分化状态和EMT样表型)p63和?Np63表达降低,miR-138和长链非编码TINCR低表达,而ANCR高水平表达,提示p63很可能与非编码RNAs相互作用,共同调控肿瘤的发生发展。本项目拟在这些工作基础上,研究p63及蛋白亚型表达与TSCC细胞分化的关系和临床意义;筛选分化相关非编码RNA表达谱,应用生物信息学手段,功能性分析非编码RNAs与p63及蛋白亚型的表达和相互作用;进一步构建体内外模型,探讨这些非编码RNAs靶向p63调控肿瘤细胞失分化的分子机制。本研究旨在阐明肿瘤细胞失分化对TSCC发生发展的影响,并为肿瘤的诱导分化治疗提供新的靶点和实验依据。
TP63作为上皮发育的关键调控因子,可参与多种肿瘤的发生发展,但在口腔癌中的致病机制尚不清楚。前期研究发现TP63在口腔鳞癌组织中表达上调,并与肿瘤细胞的分化相关。本研究在此基础上,深入研究TP63在口腔鳞癌细胞中的表达、生物学功能及其与miR-138-5p相互作用的机理。本项目的研究结果包括以下三个方面:(1) TP63在口腔鳞癌组织中表达与临床意义;(2) TP63对口腔鳞癌细胞生长、转移及其干细胞样表型的功能性调控;(3) TP63与miR-138-5p之间相互调控的分子机制。.为此,我们首先在口腔鳞癌组织中检测分析TP63的表达,并证实TP63表达上调与口腔鳞癌患者的组织分化、淋巴结转移情况、临床分期及预后相关。建立体外细胞模型及体内动物模型,证实TP63的主要亚型ΔNp63表达上调可促进OSCC细胞生长、转移及干细胞样特性。在此基础上,结合计算机软件和生物信息学分析,成功预测并通过体外研究证实TP63对miR-138-5p的转录调控,以及miR-138-5p对ΔNp63的靶向抑制作用,揭示了ΔNp63 与miR-138-5p两者相互调控,共同参与调控口腔鳞癌恶性进展的分子机理。
{{i.achievement_title}}
数据更新时间:2023-05-31
低轨卫星通信信道分配策略
Loss of a Centrosomal Protein,Centlein, Promotes Cell Cycle Progression
Complete loss of RNA editing from the plastid genome and most highly expressed mitochondrial genes of Welwitschia mirabilis
Wnt 信号通路在非小细胞肺癌中的研究进展
采用深度学习的铣刀磨损状态预测模型
长非编码RNA调控化疗诱导的舌鳞癌细胞EMT的机制研究
长非编码RNA CILA调控舌鳞癌化疗耐受的研究
长非编码RNA CILA1促进舌鳞癌细胞干性与化疗耐药的机制研究
长链非编码RNA-Cyren与舌鳞癌预后的关系及调控机制研究