Hongrong Wu1,2, Minjing Liu2, Yuejun He3, Guozhao Meng2, Wanbei Guo2, Qiong Guo4. 1. Department of Pathology, the Affiliated Hospital of Guangdong Medical University, Zhanjiang, 524001, Guangdong, China. 2. Institute of Basic Disease Sciences, XiangNan University, Chenzhou, Hunan Province, China. 3. Department of Supervision, Baiyun International Airport Customs' Inspection, Guangzhou, China. 4. Department of Urology, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, No 61 West Liberation Road, Changsha, 410005, Hunan, China. guoqiong04@126.com.
Abstract
BACKGROUND: BCL2 associated Athano-Gene 1 (BAG1) has been described to be involved in the development and progression of cancer. But the role of BAG1 in kidney renal clear cell carcinoma (KIRC) has remained largely unknown. METHODS: We performed bioinformatic analysis of data from TCGA and GEO dataset. The role of BAG1 in KIRC was explored by Logistic and Cox regression model. The molecular mechanisms of BAG1 was revealed by GSEA. RESULTS: The current study found that the KIRC tumor samples have a low level of BAG1 mRNA expression compared to the matched normal tissues based on TCGA data and GEO databases. Low expression of BAG1 in KIRC was significantly associated with Sex, clinical pathological stage, tumor-node-metastasis (TNM) stage, hemoglobin levels, cancer status and history of neoadjuvant treatment. Kaplan-Meier survival analysis indicated that KIRC patients with BAG1 high expression have a longer survival time than those with BAG1 low expression (p < 0.000). Cox regression analysis showed that BAG1 remained independently associated with overall survival, with a hazard ratio (HR) of 1.75(CI:1.05-2.90; p = 0.029). GSEA indicated that the signaling pathways including fatty acid metabolism and oxidative phosphorylation were differentially enriched in high BAG1 expression phenotype. CONCLUSIONS: These findings suggested that BAG1 expression may act as a potential favorable prognostic marker and challenging therapeutic target.
BACKGROUND:BCL2 associated Athano-Gene 1 (BAG1) has been described to be involved in the development and progression of cancer. But the role of BAG1 in kidney renal clear cell carcinoma (KIRC) has remained largely unknown. METHODS: We performed bioinformatic analysis of data from TCGA and GEO dataset. The role of BAG1 in KIRC was explored by Logistic and Cox regression model. The molecular mechanisms of BAG1 was revealed by GSEA. RESULTS: The current study found that the KIRC tumor samples have a low level of BAG1 mRNA expression compared to the matched normal tissues based on TCGA data and GEO databases. Low expression of BAG1 in KIRC was significantly associated with Sex, clinical pathological stage, tumor-node-metastasis (TNM) stage, hemoglobin levels, cancer status and history of neoadjuvant treatment. Kaplan-Meier survival analysis indicated that KIRC patients with BAG1 high expression have a longer survival time than those with BAG1 low expression (p < 0.000). Cox regression analysis showed that BAG1 remained independently associated with overall survival, with a hazard ratio (HR) of 1.75(CI:1.05-2.90; p = 0.029). GSEA indicated that the signaling pathways including fatty acid metabolism and oxidative phosphorylation were differentially enriched in high BAG1 expression phenotype. CONCLUSIONS: These findings suggested that BAG1 expression may act as a potential favorable prognostic marker and challenging therapeutic target.
Authors: Robert J Motzer; Thomas E Hutson; Piotr Tomczak; M Dror Michaelson; Ronald M Bukowski; Olivier Rixe; Stéphane Oudard; Sylvie Negrier; Cezary Szczylik; Sindy T Kim; Isan Chen; Paul W Bycott; Charles M Baum; Robert A Figlin Journal: N Engl J Med Date: 2007-01-11 Impact factor: 91.245
Authors: S L Southern; T J Collard; B C Urban; V R Skeen; H J Smartt; A Hague; F Oakley; P A Townsend; N D Perkins; C Paraskeva; A C Williams Journal: Oncogene Date: 2011-10-03 Impact factor: 9.867