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Tumor-suppressive function and mechanism of HOXB13 in right-sided colon cancer.
Signal Transduction and Targeted Therapy ( IF 40.8 ) Pub Date : 2019-11-29 , DOI: 10.1038/s41392-019-0086-1
Binbin Xie 1 , Bingjun Bai 2 , Yuzi Xu 3 , Yunlong Liu 1 , Yiming Lv 2 , Xing Gao 4 , Fei Wu 5 , Zhipeng Fang 1 , Ying Lou 1 , Hongming Pan 1 , Weidong Han 1
Affiliation  

Right-sided colon cancer (RCC) and left-sided colon cancer (LCC) differ in their clinical and molecular features. An investigation of differentially expressed genes (DEGs) between RCC and LCC could contribute to targeted therapy for colon cancer, especially RCC, which has a poor prognosis. Here, we identified HOXB13, which was significantly less expressed in RCC than in LCC and associated with prognosis in RCC, by using 5 datasets from the Gene Expression Omnibus (GEO). Tissue sample analysis showed that HOXB13 was differentially expressed between normal and only RCC tumor tissues. HOXB13 inhibited colon cancer cell proliferation and induced apoptosis both in vitro and in vivo. Furthermore, we found that HOXB13 might be regulated by DNMT3B and suppress C-myc expression to exert antitumor effects via β-catenin/TCF4 signals in RCC. In conclusion, the current study is the first to demonstrate that HOXB13 has a tumor-suppressive effect in RCC. High expression levels of HOXB13 are associated with prolonged overall survival in patients with RCC. The DNMT3B-HOXB13-C-myc signaling axis might be a molecular target for the treatment of RCC.

中文翻译:

HOXB13在右半结肠癌中的抑瘤功能及机制

右侧结肠癌(RCC)和左侧结肠癌(LCC)的临床和分子特征有所不同。对RCC和LCC之间差异表达基因(DEG)的研究可能有助于结肠癌的靶向治疗,尤其是预后不良的RCC。在这里,我们通过使用基因表达综合 (GEO) 的 5 个数据集,鉴定了 HOXB13,它在 RCC 中的表达显着低于 LCC,并且与 RCC 的预后相关。组织样本分析显示 HOXB13 在正常组织和仅 RCC 肿瘤组织之间存在差异表达。HOXB13 在体外和体内均抑制结肠癌细胞增殖并诱导细胞凋亡。此外,我们发现 HOXB13 可能受 DNMT3B 调节并抑制 C-myc 表达,从而通过 β-catenin/TCF4 信号在肾细胞癌中发挥抗肿瘤作用。总之,本研究首次证明HOXB13对肾细胞癌具有抑癌作用。HOXB13 的高表达水平与 RCC 患者总生存期延长相关。DNMT3B-HOXB13-C-myc 信号轴可能是治疗肾细胞癌的分子靶点。
更新日期:2019-11-29
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