GABRD promotes progression and predicts poor prognosis in colorectal cancer
Niu Gengming,
Deng Li,
Zhang Xiaotian,
Hu Zhiqing,
Han Shanliang,
Xu Ke,
Hong Runqi,
Meng He,
Ke Chongwei
Affiliations
Niu Gengming
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Deng Li
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Zhang Xiaotian
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Hu Zhiqing
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Han Shanliang
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Xu Ke
Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China
Hong Runqi
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Meng He
Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, People’s Republic of China
Ke Chongwei
Department of General Surgery, the Fifth People’s Hospital of Shanghai, Fudan University, 801 Heqing Road, Shanghai, 200240, People’s Republic of China
Little is known about the functional roles of gamma-aminobutyric acid type A receptor subunit delta (GABRD) in colorectal cancer (CRC). The expression of GABRD between CRCs and adjacent normal tissues (NTs), metastasis and primary tumors was compared using public transcriptomic datasets. A tissue microarray and immunohistochemical staining (IHC) were used to determine the clinical and prognostic significance of the GABRD in CRC. We used gain-of-function and loss-of-function experiments to investigate the in vitro roles of GABRD in cultured CRC cells. We characterized the potential mechanism of GABRD’s activities in CRC using a Gene Set Enrichment Analysis (GSEA) with The Cancer Genome Atlas Colon Adenocarcinoma (TCGA-COAD) dataset. We found that the GABRD expression was significantly increased in CRCs compared to that in NTs, but was similar between metastasis and primary tumors. Overexpression of GABRD was significantly associated with later pTNM stages and unfavorable patient survival. Overexpression of GABRD accelerated while knock-down of GABRD inhibited cell growth and migration. Mechanistically, the function of GABRD might be ascribed to its influence on major oncogenic events such as epithelial–mesenchymal transition (EMT), angiogenesis, and hedgehog signaling. Collectively, GABRD could be a novel prognostic predictor for CRC that deserves further investigation.
