PMID- 38351418 OWN - NLM STAT- Publisher LR - 20240214 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) DP - 2024 Feb 14 TI - H3K4 Trimethylation Mediate Hyperhomocysteinemia Induced Neurodegeneration via Suppressing Histone Acetylation by ANP32A. LID - 10.1007/s12035-024-03995-y [doi] AB - Homocysteine (Hcy) is an independent and serious risk factor for dementia, including Alzheimer's disease (AD), but the precise mechanisms are still poorly understood. In the current study, we observed that the permissive histone mark trimethyl histone H3 lysine 4 (H3K4me3) and its methyltransferase KMT2B were significantly elevated in hyperhomocysteinemia (HHcy) rats, with impairment of synaptic plasticity and cognitive function. Further research found that histone methylation inhibited synapse-associated protein expression, by suppressing histone acetylation. Inhibiting H3K4me3 by downregulating KMT2B could effectively restore Hcy-inhibited H3K14ace in N2a cells. Moreover, chromatin immunoprecipitation revealed that Hcy-induced H3K4me3 resulted in ANP32A mRNA and protein overexpression in the hippocampus, which was regulated by increased transcription Factor c-fos and inhibited histone acetylation and synapse-associated protein expression, and downregulating ANP32A could reverse these changes in Hcy-treated N2a cells. Additionally, the knockdown of KMT2B restored histone acetylation and synapse-associated proteins in Hcy-treated primary hippocampal neurons. These data have revealed a novel crosstalk mechanism between KMT2B-H3K4me3-ANP32A-H3K14ace, shedding light on its role in Hcy-related neurogenerative disorders. CI - (c) 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Chai, Gao-Shang AU - Chai GS AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. chaigaoshang@jiangnan.edu.cn. FAU - Gong, Juan AU - Gong J AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Mao, Yu-Ming AU - Mao YM AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Wu, Jia-Jun AU - Wu JJ AD - Department of Electrophysiology, Wuhan Children's Hospital (Wuhan Maternal and Children's Healthcare Center), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430010, People's Republic of China. FAU - Bi, Shu-Guang AU - Bi SG AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Wang, Fangzhou AU - Wang F AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Zhang, Yu-Qi AU - Zhang YQ AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Shen, Meng-Ting AU - Shen MT AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Lei, Zhuo-Ya AU - Lei ZY AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Nie, Yun-Juan AU - Nie YJ AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. FAU - Yu, Haitao AU - Yu H AD - Department of Fundamental Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, Jiangsu, 214122, People's Republic of China. yu_haitao@jiangnan.edu.cn. LA - eng GR - 81601121/the National Natural Science Foundation of China/ GR - BK20211238/Natural Science Foundation of Jiangsu Province/ GR - 2020M681491/China Postdoctoral Science Foundation/ GR - 2020Z037/Jiangsu Province Postdoctoral Science Foundation/ GR - SZCY-003/Six Talent Peaks Project in Jiangsu Province/ GR - JUSRP123070/Fundamental Research Funds for the Central Universities/ PT - Journal Article DEP - 20240214 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 SB - IM OTO - NOTNLM OT - ANP32A OT - Alzheimer' disease OT - Histone acetylation OT - Histone methylation OT - Homocysteine OT - Neurodegeneration EDAT- 2024/02/14 06:43 MHDA- 2024/02/14 06:43 CRDT- 2024/02/14 00:02 PHST- 2023/12/05 00:00 [received] PHST- 2024/01/29 00:00 [accepted] PHST- 2024/02/14 06:43 [medline] PHST- 2024/02/14 06:43 [pubmed] PHST- 2024/02/14 00:02 [entrez] AID - 10.1007/s12035-024-03995-y [pii] AID - 10.1007/s12035-024-03995-y [doi] PST - aheadofprint SO - Mol Neurobiol. 2024 Feb 14. doi: 10.1007/s12035-024-03995-y.