PMID- 30043858 OWN - NLM STAT- MEDLINE DCOM- 20180906 LR - 20201209 IS - 1414-431X (Electronic) IS - 0100-879X (Print) IS - 0100-879X (Linking) VI - 51 IP - 9 DP - 2018 Jul 23 TI - Decreased expression of chromodomain helicase DNA-binding protein 9 is a novel independent prognostic biomarker for colorectal cancer. PG - e7588 LID - S0100-879X2018000900612 [pii] LID - 10.1590/1414-431X20187588 [doi] LID - e7588 AB - Previous studies suggested that chromodomain helicase DNA-binding proteins (CHDs), including CHD 1-8, were associated with several human diseases and cancers including lymphoma, liver cancer, colorectal cancer, stomach cancer, etc. To date, little research on CHD 9 in human cancers has been reported. In this study, we assessed the prognostic value of CHD 9 in patients with colorectal cancer (CRC). We screened for CHD 9 expression using immunohistochemical analysis in 87 surgical CRC specimens and found that the expression was upregulated in 81.5% of the cases, while 7.4% were decreased; in the remaining 11.1% of the cases, levels were not altered. Kaplan-Meier analysis showed that patients with high CHD 9 expression had better prognosis than those with low CHD 9 expression (54.5 vs 32.1%, P=0.034). Subsequently, Cox multi-factor survival regression analysis revealed that expression of CHD 9 protein was an independent predictor for CRC, with a hazard ratio of 0.503 (P=0.028). In addition, we found that CHD 9 expression was positively correlated with MSH2 (rs=0.232, P=0.036). We speculated that CHD9 might be a putative tumor suppressor gene, and could inhibit the development of CRC by participating in DNA repair processes. Our findings suggest that CHD 9 could be a novel prognostic biomarker and a therapeutic target for CRC. Further studies are needed to detect the effect of CHD 9 on cellular function and the expression of mismatch repair genes. FAU - Xu, Li AU - Xu L AD - Department of General Surgery, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. FAU - Peng, Hui AU - Peng H AD - Administration Office of Hospital Admission and Discharge, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. FAU - Huang, Xiao-Xu AU - Huang XX AD - Department of General Surgery, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. FAU - Xia, Ya-Bin AU - Xia YB AD - Department of General Surgery, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. FAU - Hu, Kai-Feng AU - Hu KF AD - Department of General Surgery, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. FAU - Zhang, Zheng-Ming AU - Zhang ZM AD - Department of General Surgery, the First Affiliated Yijishan Hospital of Wannan Medical College, Wuhu, Anhui, China. LA - eng PT - Journal Article DEP - 20180723 PL - Brazil TA - Braz J Med Biol Res JT - Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologicas JID - 8112917 RN - 0 (Biomarkers, Tumor) RN - 0 (DNA-Binding Proteins) RN - 0 (Trans-Activators) RN - 0 (Transcription Factors) RN - EC 3.6.4.- (DNA Helicases) RN - EC 3.6.4.12 (CHD9 protein, human) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Biomarkers, Tumor/genetics/*metabolism MH - Colorectal Neoplasms/genetics/*metabolism/pathology MH - DNA Helicases MH - DNA-Binding Proteins/genetics/*metabolism MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Immunohistochemistry MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Neoplasm Staging MH - Prognosis MH - Trans-Activators MH - Transcription Factors/genetics/*metabolism MH - Young Adult PMC - PMC6065814 EDAT- 2018/07/26 06:00 MHDA- 2018/09/07 06:00 PMCR- 2018/07/23 CRDT- 2018/07/26 06:00 PHST- 2018/03/15 00:00 [received] PHST- 2018/05/15 00:00 [accepted] PHST- 2018/07/26 06:00 [entrez] PHST- 2018/07/26 06:00 [pubmed] PHST- 2018/09/07 06:00 [medline] PHST- 2018/07/23 00:00 [pmc-release] AID - S0100-879X2018000900612 [pii] AID - 10.1590/1414-431X20187588 [doi] PST - epublish SO - Braz J Med Biol Res. 2018 Jul 23;51(9):e7588. doi: 10.1590/1414-431X20187588.