1
|
Pei Z, Fan J, Tang M, Li Y. Ferroptosis: A New Strategy for the Treatment of Fibrotic Diseases. Adv Biol (Weinh) 2024:e2400383. [PMID: 39377183 DOI: 10.1002/adbi.202400383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/07/2024] [Indexed: 10/09/2024]
Abstract
Ferroptosis is a new type of cell death characterized by iron dependence and the excessive accumulation of lipid reactive oxygen species (lipid ROS) that has gradually become better characterized. There is sufficient evidence indicating that ferroptosis is associated with a variety of human life activities and diseases, such as tumor suppression, ischemic organ injury, and degenerative disorders. Notably, ferroptosis is also involved in the initiation and development of fibrosis in various organs, including liver fibrosis, pulmonary fibrosis, renal fibrosis, and cardiac fibrosis, which is usually irreversible and refractory. Although a large number of patients with fibrosis urgently need to be treated, the current treatment options are still limited and unsatisfactory. Organ fibrosis involves a series of complex and orderly processes, such as parenchymal cell damage, recruitment of inflammatory cells and activation of fibroblasts, which ultimately leads to the accumulation of extracellular matrix (ECM) and the formation of fibrosis. An increasing number of studies have confirmed the close association between these pathological processes and ferroptosis. This review summarizes the role and function of ferroptosis in fibrosis and proposes several potential therapeutic strategies and pathways based on ferroptosis.
Collapse
Affiliation(s)
- Zhuo Pei
- Air Force Hospital of the Central Theater Command of PLA, Datong, 037006, China
| | - Jing Fan
- Air Force Hospital of the Northern Theater Command of the People's Liberation Army of China, Shenyang, 110044, China
| | - Maolin Tang
- Air Force Hospital of the Central Theater Command of PLA, Datong, 037006, China
| | - Yuhong Li
- Department of Cell Biology, Army Medical University, Chongqing, 400038, China
| |
Collapse
|
2
|
de la Cruz-Thea B, Natali L, Ho-Xuan H, Bruckmann A, Coll-Bonfill N, Strieder N, Peinado VI, Meister G, Musri MM. Differentiation and Growth-Arrest-Related lncRNA ( DAGAR): Initial Characterization in Human Smooth Muscle and Fibroblast Cells. Int J Mol Sci 2024; 25:9497. [PMID: 39273443 PMCID: PMC11394763 DOI: 10.3390/ijms25179497] [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: 07/26/2024] [Revised: 08/23/2024] [Accepted: 08/26/2024] [Indexed: 09/15/2024] Open
Abstract
Vascular smooth muscle cells (SMCs) can transition between a quiescent contractile or "differentiated" phenotype and a "proliferative-dedifferentiated" phenotype in response to environmental cues, similar to what in occurs in the wound healing process observed in fibroblasts. When dysregulated, these processes contribute to the development of various lung and cardiovascular diseases such as Chronic Obstructive Pulmonary Disease (COPD). Long non-coding RNAs (lncRNAs) have emerged as key modulators of SMC differentiation and phenotypic changes. In this study, we examined the expression of lncRNAs in primary human pulmonary artery SMCs (hPASMCs) during cell-to-cell contact-induced SMC differentiation. We discovered a novel lncRNA, which we named Differentiation And Growth Arrest-Related lncRNA (DAGAR) that was significantly upregulated in the quiescent phenotype with respect to proliferative SMCs and in cell-cycle-arrested MRC5 lung fibroblasts. We demonstrated that DAGAR expression is essential for SMC quiescence and its knockdown hinders SMC differentiation. The treatment of quiescent SMCs with the pro-inflammatory cytokine Tumor Necrosis Factor (TNF), a known inducer of SMC dedifferentiation and proliferation, elicited DAGAR downregulation. Consistent with this, we observed diminished DAGAR expression in pulmonary arteries from COPD patients compared to non-smoker controls. Through pulldown experiments followed by mass spectrometry analysis, we identified several proteins that interact with DAGAR that are related to cell differentiation, the cell cycle, cytoskeleton organization, iron metabolism, and the N-6-Methyladenosine (m6A) machinery. In conclusion, our findings highlight DAGAR as a novel lncRNA that plays a crucial role in the regulation of cell proliferation and SMC differentiation. This paper underscores the potential significance of DAGAR in SMC and fibroblast physiology in health and disease.
Collapse
MESH Headings
- Humans
- RNA, Long Noncoding/genetics
- RNA, Long Noncoding/metabolism
- Fibroblasts/metabolism
- Cell Differentiation/genetics
- Myocytes, Smooth Muscle/metabolism
- Cell Proliferation/genetics
- Pulmonary Artery/metabolism
- Pulmonary Artery/cytology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/cytology
- Pulmonary Disease, Chronic Obstructive/metabolism
- Pulmonary Disease, Chronic Obstructive/genetics
- Pulmonary Disease, Chronic Obstructive/pathology
- Cells, Cultured
Collapse
Affiliation(s)
- Benjamin de la Cruz-Thea
- Mercedes and Martin Ferreyra Medical Research Institute, National Council for Scientific and Technical Research, National University of Córdoba (INIMEC-CONICET-UNC), Córdoba 5016, Argentina
| | - Lautaro Natali
- Mercedes and Martin Ferreyra Medical Research Institute, National Council for Scientific and Technical Research, National University of Córdoba (INIMEC-CONICET-UNC), Córdoba 5016, Argentina
| | - Hung Ho-Xuan
- Regensburg Center for Biochemistry (RCB), Laboratory for RNA Biology, University of Regensburg, 93053 Regensburg, Germany
| | - Astrid Bruckmann
- Regensburg Center for Biochemistry (RCB), Laboratory for RNA Biology, University of Regensburg, 93053 Regensburg, Germany
| | - Núria Coll-Bonfill
- Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, Saint Louis, MO 63104, USA
| | - Nicholas Strieder
- NGS-Core, LIT-Leibniz-Institute for Immunotherapy, 93053 Regensburg, Germany
| | - Víctor I Peinado
- Department of Experimental Pathology, Institute of Biomedical Research of Barcelona (IIBB), CSIC, 08036 Barcelona, Spain
- Department of Pulmonary Medicine, Hospital Clínic, Biomedical Research Institut August Pi i Sunyer (IDIBAPS), University of Barcelona, 08036 Barcelona, Spain
- Biomedical Research Networking Center in Respiratory Diseases (CIBERES), 28029 Madrid, Spain
| | - Gunter Meister
- Regensburg Center for Biochemistry (RCB), Laboratory for RNA Biology, University of Regensburg, 93053 Regensburg, Germany
| | - Melina M Musri
- Mercedes and Martin Ferreyra Medical Research Institute, National Council for Scientific and Technical Research, National University of Córdoba (INIMEC-CONICET-UNC), Córdoba 5016, Argentina
| |
Collapse
|
3
|
Bao Y, Yang S, Zhao H, Wang Y, Li K, Liu X, Zhang W, Zhu X. A prognostic model of idiopathic pulmonary fibrosis constructed based on macrophage and mitochondria-related genes. BMC Pulm Med 2024; 24:176. [PMID: 38609879 PMCID: PMC11015635 DOI: 10.1186/s12890-024-02976-0] [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: 11/15/2023] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Studies have shown that mitochondrial function and macrophages may play a role in the development of idiopathic pulmonary fibrosis (IPF). However, the understanding of the interactions and specific mechanisms between mitochondrial function and macrophages in pulmonary fibrosis is still very limited. METHODS To construct a prognostic model for IPF based on Macrophage- related genes (MaRGs) and Mitochondria-related genes (MitoRGs), differential analysis was performed to achieve differentially expressed genes (DEGs) between IPF and Control groups in the GSE28042 dataset. Then, MitoRGs, MaRGs and DEGs were overlapped to screen out the signature genes. The univariate Cox analysis and the least absolute shrinkage and selection operator (LASSO) algorithm were implemented to achieve key genes. Furthermore, the independent prognostic analysis was employed. The ingenuity pathway analysis (IPA) was employed to further understand the molecular mechanisms of key genes.Next, the immune infiltration analysis was implemented to identify differential immune cells between two risk subgroups. RESULTS There were 4791 DEGs between IPF and Control groups. Furthermore, 26 signature genes were achieved by the intersection processing. Three key genes including ALDH2, MCL1, and BCL2A1 were achieved, and the risk model based on the key genes was created. In addition, a nomogram for survival forecasting of IPF patients was created based on riskScore, Age, and Gender, and we found that key genes were associated with classical pathways including 'Apoptosis Signaling', 'PI3K/AKT Signaling', and so on. Next, two differential immune cells including Monocytes and CD8 T cells were identified between two risk subgroups. Moreover, we found that MIR29B2CHG and hsa-mir-1-3p could regulate the expression of ALDH2. CONCLUSION We achieved 3 key genes including ALDH2, MCL1,, and BCL2A1 associated with IPF, providing a new theoretical basis for clinical treatment of IPF.
Collapse
Affiliation(s)
- Yu Bao
- First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Shiyuan Yang
- First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Hailan Zhao
- First School of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Shandong, China
| | - Yezhen Wang
- Shandong University of Traditional Chinese Medicine Affiliated Hospital, Shandong, China
| | - Ke Li
- Shandong University of Traditional Chinese Medicine Affiliated Hospital, Shandong, China
| | - Xue Liu
- Shandong University of Traditional Chinese Medicine Affiliated Hospital, Shandong, China
| | - Wei Zhang
- Shandong University of Traditional Chinese Medicine Affiliated Hospital, Shandong, China
| | - Xue Zhu
- Shandong University of Traditional Chinese Medicine Affiliated Hospital, Shandong, China.
| |
Collapse
|
4
|
Zhang X, Peng T, Li C, Ai C, Wang X, Lei X, Li G, Li T. Inhibition of CISD1 alleviates mitochondrial dysfunction and ferroptosis in mice with acute lung injury. Int Immunopharmacol 2024; 130:111685. [PMID: 38377860 DOI: 10.1016/j.intimp.2024.111685] [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: 10/07/2023] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/22/2024]
Abstract
The NET family member, CDGSH iron-sulfur domain-containing protein 1 (CISD1), is located in theoutermembrane of mitochondria, where it regulates energy and iron metabolism. CISD1 has vital functions in certain human diseases; however, its function in acute lung injury (ALI) is unknown. ALI pathogenesis critically involves mitochondrial dysfunction and ferroptosis, which might be regulated by CISD1. Therefore, we investigated CISD1's function in mitochondrial dysfunction and ferroptosis regulation in lipopolysaccharide (LPS)-induced ALI. We found that CISD1 was upregulated in LPS-induced ALI,and silencing Cisd1 prevented cell apoptosis and increased cell viability. When CISD1was inhibited by mitoNEET ligand-1 (NL-1) there was a significant mitigation of pathological injury and lung edema, and reduced numbers of total cells, polymorphonuclear leukocytes, and a decreased protein content in the bronchoalveolar lavage fluid (BALF). Moreover, inhibition of CISD1 markedly decreased the interleukin (IL)6, IL-1β, and tumor necrosis factor alpha (TNF-α) levels in the lungs and BALF of ALI-model mice. Silencing of Cisd1 prevented LPS-induced mitochondrial membrane potential depolarization, cellular ATP reduction, and reactive oxygen species (ROS) accumulation, suggesting mitochondrial protection. ALI activated ferroptosis, as evidenced by the increased lipid-ROS, intracellular Fe2+ level, reduced Gpx4 (glutathione peroxidase 4) expression, and the glutathione/glutathione disulfide ratio. Interestingly, inhibition of CISD1 reduced LPS-induced ferroptosis in vivo and in vitro. In conclusion, inhibition of CISD1 alleviated mitochondrial dysfunction and ferroptosis in LPS-induced ALI, identifying CISD1 as possible target for therapy of LPS-induced ALI.
Collapse
Affiliation(s)
- Xueli Zhang
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, PR China; Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Tian Peng
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Congying Li
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, PR China; Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Chenmu Ai
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Xiang Wang
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Xiaobao Lei
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Guicheng Li
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China
| | - Tao Li
- Department of Critical Care Medicine, The First People's Hospital of Chenzhou, Hengyang Medical School, University of South China, Hengyang 421001, Hunan Province, PR China; Department of Critical Care Medicine, The First People's Hospital of Chenzhou, The first affiliated Hospital of Xiangnan University, Xiangnan University, Chenzhou 423000, Hunan Province, PR China.
| |
Collapse
|
5
|
MicroRNA let-7d attenuates hypertrophic scar fibrosis through modulation of iron metabolism by reducing DMT1 expression. J Mol Histol 2023; 54:77-87. [PMID: 36705783 DOI: 10.1007/s10735-023-10113-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 01/05/2023] [Indexed: 01/28/2023]
Abstract
Hypertrophic scar is an unavoidable result of wound healing following burns and trauma, which remains a challenging problem for clinicians. Previously, we demonstrated that exosomal microRNAs (miRs) of human amniotic epithelial cells accelerated wound healing and inhibited scar formation. However, the underlying mechanism is still unclear. In this particular study, we found that miR-let-7d reduced collagen deposition, and this was accompanied by decreased level of iron content in myofibroblasts. Importantly, inhibition of miR-let-7d in myofibroblasts accelerated collagen deposition and promoted cell proliferation. In addition, bioinformatics prediction combined with classical dual-luciferase reporter gene assay demonstrated that the cellular iron importer divalent metal transporter 1 (DMT1) was a target gene of miR-let-7d, and the miR-let-7d mimics inhibited the expression of DMT1 in myofibroblasts. Moreover, silencing of DMT1 with small interfering RNA (siRNA) reduced the deposition of extracellular matrix. Consistent with the results in vitro, the miR-let-7d mimics effectively ameliorated hypertrophic scar fibrosis in a rabbit ear hypertrophic scar model. Taken together, our results indicated for the first time that miR-let-7d attenuated hypertrophic scar fibrosis through modulation of iron metabolism by reducing iron uptake through DMT1, which may provide a novel therapeutic strategy for hypertrophic scar.
Collapse
|
6
|
Dufrusine B, Valentinuzzi S, Bibbò S, Damiani V, Lanuti P, Pieragostino D, Del Boccio P, D’Alessandro E, Rabottini A, Berghella A, Allocati N, Falasca K, Ucciferri C, Mucedola F, Di Perna M, Martino L, Vecchiet J, De Laurenzi V, Dainese E. Iron Dyshomeostasis in COVID-19: Biomarkers Reveal a Functional Link to 5-Lipoxygenase Activation. Int J Mol Sci 2022; 24:15. [PMID: 36613462 PMCID: PMC9819889 DOI: 10.3390/ijms24010015] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) is characterized by a broad spectrum of clinical symptoms. After acute infection, some subjects develop a post-COVID-19 syndrome known as long-COVID. This study aims to recognize the molecular and functional mechanisms that occur in COVID-19 and long-COVID patients and identify useful biomarkers for the management of patients with COVID-19 and long-COVID. Here, we profiled the response to COVID-19 by performing a proteomic analysis of lymphocytes isolated from patients. We identified significant changes in proteins involved in iron metabolism using different biochemical analyses, considering ceruloplasmin (Cp), transferrin (Tf), hemopexin (HPX), lipocalin 2 (LCN2), and superoxide dismutase 1 (SOD1). Moreover, our results show an activation of 5-lipoxygenase (5-LOX) in COVID-19 and in long-COVID possibly through an iron-dependent post-translational mechanism. Furthermore, this work defines leukotriene B4 (LTB4) and lipocalin 2 (LCN2) as possible markers of COVID-19 and long-COVID and suggests novel opportunities for prevention and treatment.
Collapse
Affiliation(s)
- Beatrice Dufrusine
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Silvia Valentinuzzi
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Sandra Bibbò
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Verena Damiani
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Paola Lanuti
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Damiana Pieragostino
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Piero Del Boccio
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Ersilia D’Alessandro
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Alberto Rabottini
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Alessandro Berghella
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| | - Nerino Allocati
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Katia Falasca
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Claudio Ucciferri
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Francesco Mucedola
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Marco Di Perna
- Pneumology Department, “SS Annunziata” Hospital, 66100 Chieti, Italy
| | - Laura Martino
- Pneumology Department, “SS Annunziata” Hospital, 66100 Chieti, Italy
| | - Jacopo Vecchiet
- Department of Medicine and Aging Science, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
- Clinic of Infectious Diseases, S.S. Annunziata Hospital, 66100 Chieti, Italy
| | - Vincenzo De Laurenzi
- Department of Innovative Technologies in Medicine and Dentistry, University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology (CAST), University “G. d’Annunzio” of Chieti-Pescara, 66100 Chieti, Italy
| | - Enrico Dainese
- Department of Bioscience and Technology for Food Agriculture and Environment, University of Teramo, 64100 Teramo, Italy
| |
Collapse
|
7
|
Wu J, Li J, Feng B, Bi Z, Zhu G, Zhang Y, Li X. Activation of AMPK-PGC-1α pathway ameliorates peritoneal dialysis related peritoneal fibrosis in mice by enhancing mitochondrial biogenesis. Ren Fail 2022; 44:1545-1557. [PMID: 36148521 PMCID: PMC9518249 DOI: 10.1080/0886022x.2022.2126789] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
BACKGROUND The pathogenesis of peritoneal dialysis (PD)-related peritoneal fibrosis (PF) is not clearly understood, and current treatment options are limited. METHODS In this study, the effect of PD-related PF on mitochondrial biogenesis was investigated, and the effect of activation of the adenosine monophosphate-activated protein kinase (AMPK)-PGC-1α (peroxisome proliferator-activated receptor γ coactivator-1α) pathway on PF was evaluated in mice. RESULTS In a mouse model of PD-related PF, AMPK-PGC-1α signaling (phospho-AMPK, PGC-1α, NRF-1, NRF-2 and TFAM expression) was downregulated, mitochondrial DNA (mtDNA) levels were reduced, and mitochondrial structure was damaged in the peritoneum. In addition, TdT-mediated dUTP nick-end labeling (TUNEL) staining showed typical apoptosis characteristics in peritoneal mesothelial cells (PMCs). Activation of the AMPK-PGC-1α pathway (PGC-1α overexpression or metformin, which is an agonist of AMPK) upregulated phospho-AMPK, PGC-1α, nuclear respiratory factors 1 (NRF-1) and 2 (NRF-2), and mitochondrial transcription factor A (TFAM) expression and mtDNA content, improved mitochondrial morphological manifestations, inhibited apoptosis of PMCs and alleviated PF. CONCLUSION Our study may suggest that activation of the AMPK-PGC-1α pathway ameliorates PD-related PF by enhancing mitochondrial biogenesis.
Collapse
Affiliation(s)
- Jun Wu
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Jushuang Li
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Baohong Feng
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Zhimin Bi
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Geli Zhu
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Yanxia Zhang
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| | - Xiangyou Li
- Department of Nephrology, Tongren Hospital of Wuhan University (Wuhan Third Hospital), Wuhan University, Wuhan, P.R. China
| |
Collapse
|