title: Specific histone modification responds to arsenic-induced oxidative stress.
abstract: To explore whether specific histone modifications are associated with arsenic-induced oxidative damage, we recruited 138 arsenic-exposed and arsenicosis subjects from Jiaole Village, Xinren County of Guizhou province, China where the residents were exposed to arsenic from indoor coal burning. 77 villagers from Shang Batian Village that were not exposed to high arsenic coal served as the control group. The concentrations of urine and hair arsenic in the arsenic-exposure group were 2.4-fold and 2.1-fold (all P<0.001) higher, respectively, than those of the control group. Global histone modifications in human peripheral lymphocytes (PBLCs) were examined by ELISA. The results showed that altered global levels of H3K18ac, H3K9me2, and H3K36me3 correlated with both urinary and hair-arsenic levels of the subjects. Notably, H3K36me3 and H3K18ac modifications were associated with urinary 8-OHdG (H3K36me3: β=0.16; P=0.042, H3K18ac: β=-0.24; P=0.001). We also found that the modifications of H3K18ac and H3K36me3 were enriched in the promoters of oxidative stress response (OSR) genes in human embryonic kidney (HEK) cells and HaCaT cells, providing evidence that H3K18ac and H3K36me3 modifications mediate transcriptional regulation of OSR genes in response to NaAsO2 treatment. Particularly, we found that reduced H3K18ac modification correlated with suppressed expression of OSR genes in HEK cells with long term arsenic treatment and in PBLCs of all the subjects. Taken together, we reveal a critical role for specific histone modification in response to arsenic-induced oxidative damage.
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Lu
authors.initials: L
authors.lastname: Ma
authors.affiliation: Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, School of Public Health, Guizhou Medical University, Guiyang, Guizhou, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Zhengbao
authors.initials: Z
authors.lastname: Zhan
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Liping
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Daochuan
authors.initials: D
authors.lastname: Li
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Bai
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Gao
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Zeng
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Zhini
authors.initials: Z
authors.lastname: He
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China.
authors.forename: Yongmei
authors.initials: Y
authors.lastname: Xiao
authors.affiliation: Department of Toxicology, Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, School of Public Health, Sun Yat-sen University, Guangzhou, China. Electronic address: chenwen@mail.sysu.edu.cn.
authors.forename: Wen
authors.initials: W
authors.lastname: Chen
authors.affiliation: Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Department of Toxicology, School of Public Health, Guizhou Medical University, Guiyang, Guizhou, China. Electronic address: aihuagzykd@163.com.
authors.forename: Aihua
authors.initials: A
authors.lastname: Zhang
mesh_terms: D000080242:8-Hydroxy-2'-Deoxyguanosine; D000328:Adult; D001151:Arsenic / Q000032:analysis / Q000633:toxicity* / Q000652:urine; D020261:Arsenic Poisoning / Q000175:diagnosis / Q000378:metabolism* / Q000652:urine; D002460:Cell Line; D002681:China; D003031:Coal; D003296:Cooking; D003849:Deoxyguanosine / Q000031:analogs & derivatives / Q000652:urine; D005260:Female; D006197:Hair / Q000737:chemistry; D006657:Histones / Q000378:metabolism*; D006801:Humans; D008214:Lymphocytes / Q000378:metabolism; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D008875:Middle Aged; D018384:Oxidative Stress; D017382:Reactive Oxygen Species / Q000378:metabolism
chemical_list: D003031:Coal; D006657:Histones; D017382:Reactive Oxygen Species; D008315:Malondialdehyde; D000080242:8-Hydroxy-2'-Deoxyguanosine; D003849:Deoxyguanosine; D001151:Arsenic
keywords: Arsenic exposure; Arsenicosis; Biomarker; H3K18ac modification; H3K36me3 modification; Oxidative stress response