Colon cancer is one of malignant tumors in China, and its morbidity and mortality rate is the first five of malignant tumors. Studies have shown that tumor recurrence and metastasis after treatment may be closely related to colorectal stem cells. The role of acidic tumor microenvironment in tumor development and treatment resistance is important. Vitamin D has potential application value in tumor therapy, which regulates the transcription of target genes through vitamin D receptors (VDR). In our previous study, the expression of VDR in colorectal cancer cells was reduced under acidosis, and the expression of VDR in colon cancer tissue decreased significantly, which suggested that the expression of VDR might be closely related to the development of colorectal cancer. The purpose of this project is to clarify the role of vitamin D and vitamin D receptors in the regulation of differentiation, proliferation, self-renewal, and tumorigenesis in colorectal cancer stem cells. In order to reveal the molecular mechanism of vitamin D in the regulation of cancer stem cell phenotype in colorectal cancer stem cells. The combined use of vitamin D and chemotherapeutic drugs in the treatment of colon cancer provides an effective and useful basis for clinical treatment of colon cancer. It is of great significance to improve the survival rate of colon cancer patients.
肠癌是我国常见的恶性肿瘤之一,其发病率及致死率位列恶性肿瘤前五。研究显示患者治疗后肿瘤复发和转移可能与结直肠癌干细胞密切相关。酸性肿瘤微环境在肿瘤发生发展以及治疗抵抗中的作用越来越受到人们的重视。维生素D在肿瘤治疗中有着潜在的应用价值,通过维生素D受体(Vitamin D receptor ,VDR)调控靶基因的转录。本课题组前期发现酸性环境下结直肠癌细胞中VDR的表达降低,且VDR在肠癌组织中的表达显著降低,提示VDR的表达可能与结直肠癌的发生发展密切相关。本项目旨在明确维生素D和维生素D受体对结直肠癌干细胞的分化、增殖、自我更新和肿瘤发生能力等表型的调控作用,明确其发挥作用的分子机制。从而揭示维生素D在结直肠癌干细胞中调控肿瘤干细胞表型的具体分子机制。联合应用维生素D和化疗药治疗肠癌,为临床治疗肠癌提供一个有效且具应用前景的参考和依据。对提高肠癌患者生存率具有重要意义。
肠癌是我国常见的恶性肿瘤之一。其复发和转移可能与结直肠癌干细胞密切相关。酸性肿瘤微环境在肿瘤发生发展以及治疗抵抗中的作用越来越受到人们的重视。维生素D在肿瘤治疗中有着潜在的应用价值,通过维生素D受体(Vitamin D receptor ,VDR)调控靶基因的转录。本课题组前期发现酸性环境下结直肠癌细胞中VDR的表达降低,且VDR在肠癌组织中的表达显著降低,提示VDR的表达可能与结直肠癌的发生发展密切相关。本项目旨在明确维生素D和维生素D受体对结直肠癌干细胞的分化、增殖、自我更新和肿瘤发生能力等表型的调控作用,明确其发挥作用的分子机制。从而揭示维生素D在结直肠癌干细胞中调控肿瘤干细胞表型的具体分子机制。联合应用维生素D和化疗药治疗肠癌,为临床治疗肠癌提供一个有效且具应用前景的参考和依据。该项目揭示了 VDR在维生素D抑制结直肠癌干细胞中的作用机制,挖掘出VDR作为抑癌基因和分化诱导因子的潜能,以维生素D受体为切入点,从表观水平阐明酸性肿瘤微环境通过维生素D代谢调控结直肠癌干细胞表型的新机制,提出改善肿瘤微环境以加强维生素D抗肿瘤作用的方法,为临床治疗肿瘤提供新策略。研究结果以论文形式发表于国际高水平转化医学研究期刊《信号转导与靶向治疗》(Signal Transduction and Targeted Therapy),最新影响因子为18.19。发表期刊入选为中国科技期刊卓越行动计划的领军期刊类项目。并且基于此次研究结果的临床应用价值,计划申请并开展临床试验。
{{i.achievement_title}}
数据更新时间:2023-05-31
论大数据环境对情报学发展的影响
Influencing factors of carbon emissions in transportation industry based on CD function and LMDI decomposition model: China as an example
The Role of Osteokines in Sarcopenia: Therapeutic Directions and Application Prospects
中国参与全球价值链的环境效应分析
转录组与代谢联合解析红花槭叶片中青素苷变化机制
Nanog调控结直肠癌干细胞自我更新及其分子机制
阿司匹林通过调控 Wnt/β-catenin 信号通路抑制结直肠癌干细胞自我更新的分子机制研究
结直肠癌分化细胞传输乳酸增强癌干细胞自我更新及其分子机制
Sec63调控Wnt/β-catenin信号促进结直肠癌干细胞自我更新和结直肠癌耐药