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Longevity OMAC. Retracted: ZNF354C Mediated by DNMT1 Ameliorates Lung Ischemia-Reperfusion Oxidative Stress Injury by Reducing TFPI Promoter Methylation to Upregulate TFPI. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:9785630. [PMID: 38189022 PMCID: PMC10769664 DOI: 10.1155/2023/9785630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 12/26/2023] [Indexed: 01/09/2024]
Abstract
[This retracts the article DOI: 10.1155/2022/7288729.].
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Guo Z, Yu X, Zhao S, Zhong X, Huang D, Feng R, Li P, Fang Z, Hu Y, Zhang Z, Abdurahman M, Huang L, Zhao Y, Wang X, Ge J, Li H. SIRT6 deficiency in endothelial cells exacerbates oxidative stress by enhancing HIF1α accumulation and H3K9 acetylation at the Ero1α promoter. Clin Transl Med 2023; 13:e1377. [PMID: 37598403 PMCID: PMC10440057 DOI: 10.1002/ctm2.1377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 08/22/2023] Open
Abstract
BACKGROUND SIRT6, an important NAD+ -dependent protein, protects endothelial cells from inflammatory and oxidative stress injuries. However, the role of SIRT6 in cardiac microvascular endothelial cells (CMECs) under ischemia-reperfusion injury (IRI) remains unclear. METHODS The HUVECs model of oxygen-glucose deprivation/reperfusion (OGD/R) was established to simulate the endothelial IRI in vitro. Endoplasmic reticulum oxidase 1 alpha (Ero1α) mRNA and protein levels in SIRT6-overexpressing or SIRT6-knockdown cells were measured by qPCR and Western blotting. The levels of H2 O2 and mitochondrial reactive oxygen species (ROS) were detected to evaluate the status of oxidative stress. The effects of SIRT6 deficiency and Ero1α knockdown on cellular endoplasmic reticulum stress (ERS), inflammation, apoptosis and barrier function were detected by a series of molecular biological experiments and functional experiments in vitro. Chromatin immunoprecipitation, Western blotting, qPCR, and site-specific mutation experiments were used to examine the underlying molecular mechanisms. Furthermore, endothelial cell-specific Sirt6 knockout (ecSirt6-/- ) mice were subjected to cardiac ischemia-reperfusion surgery to investigate the effects of SIRT6 in CMECs in vivo. RESULTS The expression of Ero1α was significantly upregulated in SIRT6-knockdown endothelial cells, and high Ero1α expression correlated with the accumulation of H2 O2 and mitochondrial ROS. In addition, SIRT6 deficiency increased ERS, inflammation, apoptosis and endothelial permeability, and these effects could be significantly attenuated by Ero1α knockdown. The deacetylase catalytic activity of SIRT6 was important in regulating Ero1α expression and these biological processes. Mechanistically, SIRT6 inhibited the enrichment of HIF1α and p300 at the Ero1α promoter through deacetylating H3K9, thereby antagonizing HIF1α/p300-mediated Ero1α expression. Compared with SIRT6-wild-type (SIRT6-WT) cells, cells expressing the SIRT6-H133Y-mutant and SIRT6-R65A-mutant exhibited increased Ero1α expression. Furthermore, ecSirt6-/- mice subjected to ischemia-reperfusion surgery exhibited increased Ero1α expression and ERS in CMECs and worsened injuries to microvascular barrier function and cardiac function. CONCLUSIONS Our results revealed an epigenetic mechanism associated with SIRT6 and Ero1α expression and highlighted the therapeutic potential of targeting the SIRT6-HIF1α/p300-Ero1α axis.
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Affiliation(s)
- Zhenyang Guo
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Xueting Yu
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Shuang Zhao
- Department of Medical ExaminationShanghai Xuhui District Central HospitalShanghaiChina
| | - Xin Zhong
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Dong Huang
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Runyang Feng
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Peng Li
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Zheyan Fang
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Yiqing Hu
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Zhentao Zhang
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Mukaddas Abdurahman
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
| | - Lei Huang
- Department of MolecularCell and Cancer BiologyProgram in Molecular MedicineUniversity of Massachusetts Medical SchoolMAUSA
| | - Yun Zhao
- School of Life Science and TechnologyShanghaiTech UniversityShanghaiChina
- State Key Laboratory of Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesShanghai Institute of Biochemistry and Cell Biology, University of Chinese Academy of SciencesShanghaiChina
- Key Laboratory of Systems Health Science of Zhejiang ProvinceSchool of Life ScienceHangzhou Institute for Advanced Study, University of Chinese Academy of SciencesHangzhouChina
| | - Xiangdong Wang
- Department of Pulmonary and Critical Care MedicineZhongshan HospitalShanghai Medical CollegeFudan UniversityShanghaiChina
| | - Junbo Ge
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
- Department of CardiologyZhongshan Hospital, Fudan UniversityShanghaiChina
- National Clinical Research Center for Interventional MedicineShanghaiChina
- Shanghai Clinical Research Center for Interventional MedicineShanghaiChina
- Key Laboratory of Viral Heart DiseasesNational Health CommissionShanghaiChina
- Key Laboratory of Viral Heart DiseasesChinese Academy of Medical SciencesShanghaiChina
| | - Hua Li
- Department of Cardiology, Zhongshan HospitalShanghai Institute of Cardiovascular Diseases, Fudan UniversityShanghaiChina
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Feng Y, Zhang H, Han J, Cui B, Qin L, Zhang L, Li Q, Wu X, Xiao N, Zhang Y, Lin T, Liu H, Sun T. HSF4/COIL complex-dependent R-loop mediates ultraviolet-induced inflammatory skin injury. Clin Transl Med 2023; 13:e1336. [PMID: 37461263 PMCID: PMC10352565 DOI: 10.1002/ctm2.1336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 07/05/2023] [Accepted: 07/11/2023] [Indexed: 07/20/2023] Open
Abstract
Intense ultraviolet (UV) exposure can cause phototoxic reactions, such as skin inflammation, resulting in injury. UV is a direct cause of DNA damage, but the mechanisms underlying transcriptional regulation within cells after DNA damage are unclear. The bioinformatics analysis of transcriptome sequencing data from UV-irradiated and non-UV-irradiated skin showed that transcription-related proteins, such as HSF4 and COIL, mediate cellular response to UV irradiation. HSF4 and COIL can form a complex under UV irradiation, and the preference for binding target genes changed because of the presence of a large number of R-loops in cells under UV irradiation and the ability of COIL to recognize R-loops. The regulation of target genes was altered by the HSF4-COIL complex, and the expression of inflammation and ageing-related genes, such as Atg7, Tfpi, and Lims1, was enhanced. A drug screen was performed for the recognition sites of COIL and R-loop. N6-(2-hydroxyethyl)-adenosine can competitively bind COIL and inhibit the binding of COIL to the R-loop. Thus, the activation of downstream inflammation-related genes and inflammatory skin injury was inhibited.
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Affiliation(s)
- Yi‐qian Feng
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Heng Zhang
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug ResearchTianjin International Joint Academy of BiomedicineTianjinChina
| | - Jing‐xia Han
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug ResearchTianjin International Joint Academy of BiomedicineTianjinChina
| | - Bi‐jia Cui
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Lu‐ning Qin
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Lei Zhang
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Qing‐qing Li
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Xin‐ying Wu
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Nan‐nan Xiao
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Yan Zhang
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
| | - Ting‐ting Lin
- Medical Plastic and Cosmetic CentreTianjin Branch of National Clinical Research Center for Ocular DiseaseTianjin Medical University Eye HospitalTianjinChina
| | - Hui‐juan Liu
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
- Tianjin Key Laboratory of Early Druggability Evaluation of Innovative Drugs and Tianjin Key Laboratory of Molecular Drug ResearchTianjin International Joint Academy of BiomedicineTianjinChina
| | - Tao Sun
- State Key Laboratory of Medicinal Chemical Biology and College of PharmacyNankai UniversityTianjinChina
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Liu MY, Ju YN, Jia BW, Sun XK, Qiu L, Liu HY, Xu GX, Tai QH, Tan J, Gao W. Inhibition of DNA methylation attenuates lung ischemia-reperfusion injury after lung transplantation. J Int Med Res 2023; 51:3000605231153587. [PMID: 36756846 PMCID: PMC9912569 DOI: 10.1177/03000605231153587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
OBJECTIVE DNA methylation plays an important role in inflammation and oxidative stress. This study aimed to investigate the effect of inhibiting DNA methylation on lung ischemia-reperfusion injury (LIRI). METHODS We adopted a completely random design for our study. Thirty-two rats were randomized into the sham, LIRI, azathioprine (AZA), and pluripotin (SC1) groups. The rats in the LIRI, AZA, and SC1 groups received left lung transplantation and intravenous injection of saline, AZA, and SC1, respectively. After 24 hours of reperfusion, histological injury, the arterial oxygen partial pressure to fractional inspired oxygen ratio, the wet/dry weight ratio, protein and cytokine concentrations in lung tissue, and DNA methylation in lung tissue were evaluated. The pulmonary endothelium that underwent hypoxemia and reoxygenation was treated with AZA or SC1. Endothelial apoptosis, chemokines, reactive oxygen species, nuclear factor-κB, and apoptotic proteins in the endothelium were studied. RESULTS Inhibition of DNA methylation by AZA attenuated lung injury, inflammation, and the oxidative stress response, but SC1 aggravated LIRI injury. AZA significantly improved endothelial function, suppressed apoptosis and necrosis, reduced chemokines, and inhibited nuclear factor-κB. CONCLUSIONS Inhibition of DNA methylation ameliorates LIRI and apoptosis and improves pulmonary function via the regulation of inflammation and oxidative stress.
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Affiliation(s)
- Ming-yuan Liu
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Ying-nan Ju
- Department of Intensive Care Unit, The Third Affiliated Hospital
of Harbin Medical University, Harbin, Heilongjiang, China
| | - Bao-wei Jia
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Xi-kun Sun
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Lin Qiu
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Heng-yu Liu
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Guang-xiao Xu
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Qi-hang Tai
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Jing Tan
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China
| | - Wei Gao
- Department of Anesthesiology, The Second Affiliated Hospital of
Harbin Medical University, Harbin, Heilongjiang, China,Wei Gao, Department of Anesthesiology, The
Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Harbin,
Heilongjiang 150081, China.
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