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Li SY, Tsai MT, Kuo YM, Yang HM, Tong ZJ, Cheng HW, Lin CC, Wang HT. Aldehyde dehydrogenase 2 preserves kidney function by countering acrolein-induced metabolic and mitochondrial dysfunction. JCI Insight 2024; 9:e179871. [PMID: 39226171 PMCID: PMC11466184 DOI: 10.1172/jci.insight.179871] [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: 02/26/2024] [Accepted: 08/13/2024] [Indexed: 09/05/2024] Open
Abstract
The prevalence of chronic kidney disease (CKD) varies by race because of genetic and environmental factors. The Glu504Lys polymorphism in aldehyde dehydrogenase 2 (ALDH2), commonly observed among East Asian people, alters the enzyme's function in detoxifying alcohol-derived aldehydes, affecting kidney function. This study investigated the association between variations in ALDH2 levels within the kidney and the progression of kidney fibrosis. Our clinical data indicate that diminished ALDH2 levels are linked to worse CKD outcomes, with correlations between ALDH2 expression, estimated glomerular filtration rate, urinary levels of acrolein - an aldehyde metabolized by ALDH2 - and fibrosis severity. In mouse models of unilateral ureteral obstruction and folic acid nephropathy, reduced ALDH2 levels and elevated acrolein were observed in kidneys, especially in ALDH2 Glu504Lys-knockin mice. Mechanistically, acrolein modifies pyruvate kinase M2, leading to its nuclear translocation and coactivation of HIF-1α, shifting cellular metabolism to glycolysis, disrupting mitochondrial function, and contributing to tubular damage and the progression of kidney fibrosis. Enhancing ALDH2 expression through adeno-associated virus vectors reduced acrolein and mitigated fibrosis in both WT and Glu504Lys-knockin mice. These findings underscore the potential therapeutic significance of targeting the dynamic interaction between ALDH2 and acrolein in CKD.
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Affiliation(s)
- Szu-Yuan Li
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine and
| | - Ming-Tsun Tsai
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine and
| | - Yu-Ming Kuo
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hui-Min Yang
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Zhen-Jie Tong
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Hsiao-Wei Cheng
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Chih-Ching Lin
- Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- School of Medicine and
| | - Hsiang-Tsui Wang
- Institute of Pharmacology, College of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Food Safety and Health Risk Assessment, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Doctor Degree Program in Toxicology, Kaohsiung Medical University, Kaohsiung, Taiwan
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Wan S, Lou M, Zhang S, Li S, Ling Y. Transcriptome analysis revealed differences in gene expression in sheep muscle tissue at different developmental stages. BMC Genom Data 2024; 25:54. [PMID: 38849746 PMCID: PMC11162047 DOI: 10.1186/s12863-024-01235-9] [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: 01/10/2024] [Accepted: 05/22/2024] [Indexed: 06/09/2024] Open
Abstract
BACKGROUND The analysis of differentially expressed genes in muscle tissues of sheep at different ages is helpful to analyze the gene expression trends during muscle development. In this study, the longissimus dorsi muscle of pure breeding Hu sheep (H), Suffolk sheep and Hu sheep hybrid F1 generation (SH) and East Friesian and Hu sheep hybrid sheep (EHH) three strains of sheep born 2 days (B2) and 8 months (M8) was used as the research object, and transcriptome sequencing technology was used to identify the differentially expressed genes of sheep longissimus dorsi muscle in these two stages. Subsequently, GO and KEGG enrichment analysis were performed on the differential genes. Nine differentially expressed genes were randomly selected and their expression levels were verified by qRT-PCR. RESULTS The results showed that 842, 1301 and 1137 differentially expressed genes were identified in H group, SH group and EHH group, respectively. Among them, 191 differential genes were enriched in these three strains, including pre-folding protein subunit 6 (PFDN6), DnaJ heat shock protein family member A4 (DNAJA4), myosin heavy chain 8 (MYH8) and so on. GO and KEGG enrichment analysis was performed on 191 differentially expressed genes shared by the three strains to determine common biological pathways. The results showed that the differentially expressed genes were significantly enriched in ribosomes, unfolded protein binding, FoxO signaling pathway, glycolysis / glycogen generation and glutathione signaling pathway that regulate muscle protein synthesis and energy metabolism. The results of qRT-PCR were consistent with transcriptome sequencing, which proved that the sequencing results were reliable. CONCLUSIONS Overall, this study revealed the important genes and signaling pathways related to sheep skeletal muscle development, and the result laid a foundation for further understanding the mechanism of sheep skeletal muscle development.
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Affiliation(s)
- Sailuo Wan
- College of Agricultural Engineering, Anhui Open University, Hefei, 230022, P.R. China
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036, P.R. China
| | - Mengyu Lou
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036, P.R. China
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei, 230036, P.R. China
| | - Sihuan Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036, P.R. China
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei, 230036, P.R. China
| | - Shuang Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036, P.R. China
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei, 230036, P.R. China
| | - Yinghui Ling
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, 230036, P.R. China.
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-Breeding, Anhui Agricultural University, Hefei, 230036, P.R. China.
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Marques E, Alves Teixeira M, Nguyen C, Terzi F, Gallazzini M. Lipocalin-2 induces mitochondrial dysfunction in renal tubular cells via mTOR pathway activation. Cell Rep 2023; 42:113032. [PMID: 37624695 DOI: 10.1016/j.celrep.2023.113032] [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: 03/07/2023] [Revised: 07/03/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Mitochondrial dysfunction is a critical process in renal epithelial cells upon kidney injury. While its implication in kidney disease progression is established, the mechanisms modulating it remain unclear. Here, we describe the role of Lipocalin-2 (LCN2), a protein expressed in injured tubular cells, in mitochondrial dysfunction. We show that LCN2 expression decreases mitochondrial mass and function and induces mitochondrial fragmentation. Importantly, while LCN2 expression favors DRP1 mitochondrial recruitment, DRP1 inhibition antagonizes LCN2's effect on mitochondrial shape. Remarkably, LCN2 promotes mitochondrial fragmentation independently of its secretion or transport iron activity. Mechanistically, intracellular LCN2 expression increases mTOR activity, and rapamycin inhibits LCN2's effect on mitochondrial shape. In vivo, Lcn2 gene inactivation prevents mTOR activation and mitochondrial length decrease observed upon ischemia-reperfusion-induced kidney injury (IRI) in Lcn2+/+ mice. Our data identify LCN2 as a key regulator of mitochondrial dynamics and further elucidate the mechanisms leading to mitochondrial dysfunction.
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Affiliation(s)
- Eloïse Marques
- Mechanisms and Therapeutic Strategies of Chronic Kidney Disease, INSERM U1151-CNRS UMR 8253, Université Paris Cité, Institut Necker Enfants Malades, 160 Rue de Vaugirard, 75015 Paris, France
| | - Maraiza Alves Teixeira
- Mechanisms and Therapeutic Strategies of Chronic Kidney Disease, INSERM U1151-CNRS UMR 8253, Université Paris Cité, Institut Necker Enfants Malades, 160 Rue de Vaugirard, 75015 Paris, France
| | - Clément Nguyen
- Mechanisms and Therapeutic Strategies of Chronic Kidney Disease, INSERM U1151-CNRS UMR 8253, Université Paris Cité, Institut Necker Enfants Malades, 160 Rue de Vaugirard, 75015 Paris, France
| | - Fabiola Terzi
- Mechanisms and Therapeutic Strategies of Chronic Kidney Disease, INSERM U1151-CNRS UMR 8253, Université Paris Cité, Institut Necker Enfants Malades, 160 Rue de Vaugirard, 75015 Paris, France
| | - Morgan Gallazzini
- Mechanisms and Therapeutic Strategies of Chronic Kidney Disease, INSERM U1151-CNRS UMR 8253, Université Paris Cité, Institut Necker Enfants Malades, 160 Rue de Vaugirard, 75015 Paris, France.
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Sun Y, Chen LH, Lu YS, Chu HT, Wu Y, Gao XH, Chen HD. Identification of novel candidate genes in rosacea by bioinformatic methods. Cytokine 2021; 141:155444. [PMID: 33529888 DOI: 10.1016/j.cyto.2021.155444] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/23/2020] [Accepted: 01/13/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Rosacea is a chronic inflammatory skin disease whose psychological consequences severely affect patient's quality of life. OBJECTIVE To identify candidate genes of rosacea for potential development of new target therapies. METHODS Gene Expression Omnibus datasets were retrieved to obtain differentially expressed genes (DEGs) between rosacea patients and healthy controls. Gene ontology (GO) analyses were used to identify functions of candidate genes. Related signaling pathways of DEGs were analyzed using Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene set enrichment analysis. Protein-protein interaction (PPI) networks were applied using search tools for the retrieval of interacting genes/proteins and modulations involving PPI networks were evaluated with use of the MCODE app. RESULTS Samples from 19 rosacea patients and 10 healthy controls of dataset GSE65914 were enrolled. A total of 215 DEGs, 115 GO terms and 6 KEGG pathways were identified. A total of 182 nodes and 456 edges were enriched in PPI networks. Maximal clusters showed 15 central nodes and 96 edges. The toll-like receptor (TLR) signaling pathway was the most significant pathway detected and 5 DEGs were identified as candidate genes which included TLR2, C-C motif chemokine (CCL) 5, C-X-C motif chemokine ligand (CXCL) 9, CXCL10 and CXCL11. The results were verified in rosacea patients with use of real-time polymerase chain reaction and immunohistochemistry. Cell-type enrichment analysis revealed 8 lymphocytes that were enriched in rosacea patients. CONCLUSIONS The results suggest that both innate and adaptive immune responses were involved in the etiology of rosacea. Five DEGs in the TLR signaling pathway may serve as potential therapeutic target genes.
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Affiliation(s)
- Yan Sun
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Liang-Hong Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Yan-Song Lu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Hai-Tao Chu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yan Wu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China.
| | - Xing-Hua Gao
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Hong-Duo Chen
- Department of Dermatology, The First Hospital of China Medical University, Shenyang 110001, China
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Wang S, Shuai C, Gao S, Jiang J, Luan J, Lv X. Chemokine CXCL14 acts as a potential genetic target for liver fibrosis. Int Immunopharmacol 2020; 89:107067. [PMID: 33039963 DOI: 10.1016/j.intimp.2020.107067] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/30/2020] [Accepted: 09/30/2020] [Indexed: 12/12/2022]
Abstract
There are multiple causes of liver fibrosis, common ones include ethanol, toxins, and cholestasis. However, whether these different etiologies lead to the same pathological outcomes contain common genetic targets or signaling pathways, the current research has not attracted widespread attention. GSE40041 and GSE55747 were downloaded from the Gene Expression Omnibus (GEO) database. GSE40041 and GSE55747 represent the differential expression profiles in the liver of mice with bile duct ligation (BDL) and carbon tetrachloride (CCl4) induced liver fibrosis models, respectively. By using GEO2R, 701 differential expression genes (DEGs) in GSE40041 and 6540 DEGs in GSE55747 were identified. 260 co-DEGs were shared and extracted for gene ontology (GO) analysis. Through GO analysis, it was found that the regulation of cell migration in biological processes (BPs) was closely related to the pathogenesis of liver fibrosis, and the genes involved in this process include a key gene, chemokine (C-X-C motif) ligand 14 (CXCL14). Subsequently, further bioinformatic analysis showed that CXCL14 may be regulated by miR-122 to participate in the progression of liver fibrosis. Then real-time PCR and western blotting were performed to validate the expression of CXCL14 in liver tissue after liver fibrosis caused by different etiologies (ethanol, CCl4). The expression of CXCL4 in liver fibrosis induced by BDL was verified in another GEO dataset. Basically consistent with our bioinformatics results, our experimental results showed that the expression of CXCL14 was most significantly increased in alcoholic liver fibrosis model, followed by CCl4-induced liver fibrosis, which was also significantly increased in the BDL-induced model. Thus, CXCL14 can act as a common potential genetic target for different liver fibrosis diseases.
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Affiliation(s)
- Sheng Wang
- Department of Pharmacy, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, Anhui Province, China; The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Province Key Laboratory of Major Autoimmune Diseases, School of Pharmacy, Institute for Liver Disease of Anhui Medical University, Hefei, Anhui Province, China
| | - Chen Shuai
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Province Key Laboratory of Major Autoimmune Diseases, School of Pharmacy, Institute for Liver Disease of Anhui Medical University, Hefei, Anhui Province, China
| | - Songsen Gao
- Department of Orthopedics (Spinal Surgery), The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Jia Jiang
- Department of Pharmacy, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, Anhui Province, China
| | - Jiajie Luan
- Department of Pharmacy, The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital of Wannan Medical College), Wuhu, Anhui Province, China.
| | - Xiongwen Lv
- The Key Laboratory of Anti-inflammatory and Immune Medicines, Ministry of Education, Anhui Province Key Laboratory of Major Autoimmune Diseases, School of Pharmacy, Institute for Liver Disease of Anhui Medical University, Hefei, Anhui Province, China.
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Xi XJ, Chen SH, Mi H. Aldh2 gene reduces oxidative stress in the bladder by regulating the NF-κB pathway in a mouse model of ketamine-induced cystitis. Exp Ther Med 2020; 20:111. [PMID: 33005240 PMCID: PMC7523278 DOI: 10.3892/etm.2020.9239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 07/14/2020] [Indexed: 12/26/2022] Open
Abstract
Aldehyde dehydrogenase 2 (aldh2) serves an important role in the development of organ injury. Therefore, the present study investigated the effects of aldh2 on the oxidative stress response in a mouse model of ketamine-induced cystitis (KIC). A total of 60 8-week-old male Institute of Cancer Research wild-type (WT) mice and 45 aldh2 knock-out (KO) mice were randomized to receive low-dose ketamine (30 mg/kg), high-dose ketamine (60 mg/kg) or normal saline (controls). At 4, 8 and 12 weeks post-injection, bladder tissues were harvested and used to investigate the protective mechanisms of aldh2 on bladder function. The results demonstrated that aldh2 KO mice exhibited significant weight loss following chronic ketamine injection compared with that in WT mice. Furthermore, ketamine treatment increased the urination rate (P<0.05), pathological score (P<0.05), levels of the oxidative stress product malondialdehyde (P<0.05) in addition to reducing the expression of the anti-oxidative stress enzyme superoxide dismutase (P<0.05) and glutathione-SH (P<0.05). Oxidative stress in aldh2 KO mice was also found to significantly enhance the expression of proteins associated with the NF-κB signaling pathway, which promoted the expression of inducible nitric oxide synthase (P<0.05) and cyclooxygenase-2 (P<0.05) further. Finally, aldh2 KO mice demonstrated higher severity of fibrosis in the submucosal and muscular layers of the bladder. In conclusion, the present study suggests that aldh2 serves a protective role in preventing inflammation and fibrosis in KIC.
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Affiliation(s)
- Xiao Jian Xi
- Department of Urology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shao Hua Chen
- Department of Urology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Hua Mi
- Department of Urology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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