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Zhang R, Zhang X, Zhu X, Li T, Li Y, Zhang P, Chen Y, Li G, Han X. Nanoparticles transfected with plasmid-encoded lncRNA-OIP5-AS1 inhibit renal ischemia-reperfusion injury in mice via the miR-410-3p/Nrf2 axis. Ren Fail 2024; 46:2319327. [PMID: 38419565 PMCID: PMC10906121 DOI: 10.1080/0886022x.2024.2319327] [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: 08/17/2023] [Accepted: 02/09/2024] [Indexed: 03/02/2024] Open
Abstract
Nanostructures composed of liposomes and polydopamine (PDA) have demonstrated efficacy as carriers for delivering plasmids, effectively alleviating renal cell carcinoma. However, their role in acute kidney injury (AKI) remains unclear. This study aimed to investigate the effects of the plasmid-encoded lncRNA-OIP5-AS1@PDA nanoparticles (POP-NPs) on renal ischemia/reperfusion (RI/R) injury and explore the underlying mechanisms. RI/R or OGD/R models were established in mice and HK-2 cells, respectively. In vivo, vector or POP-NPs were administered (10 nmol, IV) 48 h after RI/R treatment. In the RI/R mouse model, the OIP5-AS1 and Nrf2/HO-1 expressions were down-regulated, while miR-410-3p expression was upregulated. POP-NPs treatment effectively reversed RI/R-induced renal tissue injury, restoring altered levels of blood urea nitrogen, creatinine, malondialdehyde, inflammatory factors (IL-8, IL-6, TNF-α), ROS, apoptosis, miR-410-3p, as well as the suppressed expression of SOD and Nrf2/HO-1 in the model mice. Similar results were obtained in cell models treated with POP-NPs. Additionally, miR-410-3p mimics could reverse the effects of POP-NPs on cellular models, partially counteracted by Nrf2 agonists. The binding relationship between OIP5-AS1 and miR-410-3p, alongside miR-410-3p and Nrf2, has been substantiated by dual-luciferase reporter and RNA pull-down assays. The study revealed that POP-NPs can attenuate RI/R-induced injury through miR-410-3p/Nrf2 axis. These findings lay the groundwork for future targeted therapeutic approaches utilizing nanoparticles for RI/R-induced AKI.
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Affiliation(s)
- Rongjie Zhang
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Xin Zhang
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Xuhui Zhu
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Tao Li
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Yansheng Li
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Peng Zhang
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Yuanhao Chen
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Gao Li
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
| | - Xiuwu Han
- Department of Urology, Beijing Chao-Yang Hospital, Beijing, China
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Han H, Zhang G, Zhang X, Zhao Q. Nrf2-mediated ferroptosis inhibition: a novel approach for managing inflammatory diseases. Inflammopharmacology 2024:10.1007/s10787-024-01519-7. [PMID: 39126567 DOI: 10.1007/s10787-024-01519-7] [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: 06/01/2024] [Accepted: 06/28/2024] [Indexed: 08/12/2024]
Abstract
Inflammatory diseases, including psoriasis, atherosclerosis, rheumatoid arthritis, and ulcerative colitis, are characterized by persistent inflammation. Moreover, the existing treatments for inflammatory diseases only provide temporary relief by controlling symptoms, and treatments of unstable and expensive. Therefore, new therapeutic solutions are urgently needed to address the underlying causes or symptoms of inflammatory diseases. Inflammation frequently coincides with a high level of (reactive oxygen species) ROS activation, serving as a fundamental element in numerous physiological and pathological phenotypes that can result in serious harm to the organism. Given its pivotal role in inflammation, oxidative stress, and ferroptosis, ROS represents a focal node for investigating the (nuclear factor E2-related factor 2) Nrf2 pathway and ferroptosis, both of which are intricately linked to ROS. Ferroptosis is mainly triggered by oxidative stress and involves iron-dependent lipid peroxidation. The transcription factor Nrf2 targets several genes within the ferroptosis pathway. Recent studies have shown that Nrf2 plays a significant role in three key ferroptosis-related routes, including the synthesis and metabolism of glutathione/glutathione peroxidase 4, iron metabolism, and lipid processes. As a result, ferroptosis-related treatments for inflammatory diseases have attracted much attention. Moreover, drugs targeting Nrf2 can be used to manage inflammatory conditions. This review aimed to assess ferroptosis regulation mechanism and the role of Nrf2 in ferroptosis inhibition. Therefore, this review article may provide the basis for more research regarding the treatment of inflammatory diseases through Nrf2-inhibited ferroptosis.
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Affiliation(s)
- Hang Han
- College of Pharmacy, Chongqing Medical University, Chongqing, Chongqing, 400016, China
| | - Guojiang Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, Chongqing, 400016, China
| | - Xiao Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, Chongqing, 400016, China.
| | - Qinjian Zhao
- College of Pharmacy, Chongqing Medical University, Chongqing, Chongqing, 400016, China.
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Jia J, Tan R, Xu L, Wang H, Li J, Su H, Zhong X, Liu P, Wang L. Hederagenin improves renal fibrosis in diabetic nephropathy by regulating Smad3/NOX4/SLC7A11 signaling-mediated tubular cell ferroptosis. Int Immunopharmacol 2024; 135:112303. [PMID: 38776855 DOI: 10.1016/j.intimp.2024.112303] [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: 03/29/2024] [Revised: 05/10/2024] [Accepted: 05/16/2024] [Indexed: 05/25/2024]
Abstract
Diabetic nephropathy (DN) is a common complication of diabetes, characterized by renal fibrosis and poor patient prognosis. Hederagenin (HDG) has shown promising improvement in chronic kidney disease (CKD) kidney fibrosis, but its mechanism in DN-induced kidney fibrosis remains unclear. In this study, a model of diabetic nephropathy (DN) in mice was induced by intraperitoneal injection of streptozocin (50 mg/kg), while in vitro, high glucose (25 mM) was used to induce HK2 cell damage, simulating tubular injury in DN kidneys. The improvement of HDG treatment intervention was evaluated by observing changes in renal function, pathological structural damage, and the expression of fibrosis-related proteins in renal tubular cells. The results demonstrate that HDG intervention alleviates renal dysfunction and pathological damage in DN mice, accompanied by reduced expression of fibrotic markers α-smooth muscle actin (α-SMA), fibronectin (FN) and Collagen-I. Mechanistically, this study found that HDG can inhibit ferroptosis and fibrosis induced by the ferroptosis inducer Erastin (1 μM) in renal tubular cells. Phosphorylation of Smad3 promotes ferroptosis in renal tubular cells. After using its specific inhibitor SIS3 (4 μM), the expression of downstream target protein NADPH oxidase 4 (NOX4) significantly decreases, while the level of glutathione peroxidase 4 (GPX4) is notably restored, mitigating ferroptosis. Smad3 overexpression attenuates the therapeutic effect of HDG on tubular cell fibrosis induced by high glucose. These results demonstrate HDG inhibits Smad3 phosphorylation, thereby reducing the expression of NOX4 and enhancing the expression of GPX4, ultimately attenuating ferroptosis induced renal fibrosis. These findings suggest that HDG offer therapeutic potential for DN renal fibrosis by targeting Smad3-mediated ferroptosis in renal tubular cells.
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Affiliation(s)
- Jian Jia
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Ruizhi Tan
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Linghui Xu
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Honglian Wang
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Jianchun Li
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Hongwei Su
- Shunyi Hospital, Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China
| | - Xia Zhong
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China
| | - Peng Liu
- Shunyi Hospital, Beijing Traditional Chinese Medicine Hospital, Beijing 101300, China.
| | - Li Wang
- Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou 646000, China.
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Luo Y, Bai XY, Zhang L, Hu QQ, Zhang N, Cheng JZ, Hou MZ, Liu XL. Ferroptosis in Cancer Therapy: Mechanisms, Small Molecule Inducers, and Novel Approaches. Drug Des Devel Ther 2024; 18:2485-2529. [PMID: 38919962 PMCID: PMC11198730 DOI: 10.2147/dddt.s472178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024] Open
Abstract
Ferroptosis, a unique form of programmed cell death, is initiated by an excess of iron accumulation and lipid peroxidation-induced damage. There is a growing body of evidence indicating that ferroptosis plays a critical role in the advancement of tumors. The increased metabolic activity and higher iron levels in tumor cells make them particularly vulnerable to ferroptosis. As a result, the targeted induction of ferroptosis is becoming an increasingly promising approach for cancer treatment. This review offers an overview of the regulatory mechanisms of ferroptosis, delves into the mechanism of action of traditional small molecule ferroptosis inducers and their effects on various tumors. In addition, the latest progress in inducing ferroptosis using new means such as proteolysis-targeting chimeras (PROTACs), photodynamic therapy (PDT), sonodynamic therapy (SDT) and nanomaterials is summarized. Finally, this review discusses the challenges and opportunities in the development of ferroptosis-inducing agents, focusing on discovering new targets, improving selectivity, and reducing toxic and side effects.
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Affiliation(s)
- YiLin Luo
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Xin Yue Bai
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Lei Zhang
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Qian Qian Hu
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Ning Zhang
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Jun Zhi Cheng
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Ming Zheng Hou
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
| | - Xiao Long Liu
- Yan ‘an Small Molecule Innovative Drug R&D Engineering Research Center, School of Medicine, Yan’an University, Yan’an, People’s Republic of China
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Shen P, Deng X, Li T, Chen X, Wu X. Demethylzeylasteral protects against renal interstitial fibrosis by attenuating mitochondrial complex I-mediated oxidative stress. JOURNAL OF ETHNOPHARMACOLOGY 2024; 327:117986. [PMID: 38437887 DOI: 10.1016/j.jep.2024.117986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Renal interstitial fibrosis (RIF) is a main pathological process in chronic kidney disease (CKD). Demethylzeylasteral (DML), a major component of Tripterygium wilfordii Hook. f., has anti-renal fibrosis effects. However, its mechanism of action remains incompletely understood. AIM OF THE STUDY The present study was designed to comprehensively examine the effects of DML on RIF and the underlying mechanisms. MATERIALS AND METHODS Pathological experiments were performed to determine the therapeutic effect of DML on a mouse model of UUO-induced RIF. To determine the novel mechanisms underlying the therapeutic effects of DML against RIF, a comprehensive transcriptomics analysis was performed on renal tissues, which was further verified by a series of experiments. RESULTS Pathological and immunohistochemical staining showed that DML inhibited UUO-induced renal damage and reduced the expression of fibrosis-related proteins in mice. Transcriptomic analysis revealed that the partial subunits of mitochondrial complex (MC) I and II may be targets by which DML protects against RIF. Furthermore, DML treatment reduced mitochondrial reactive oxygen species (ROS) levels, consequently promoting ATP production and mitigating oxidative stress-induced injury in mice and cells. Notably, this protective effect was attributed to the inhibition of MC I activity, suggesting a crucial role for this specific complex in mediating the therapeutic effects of DML against RIF. CONCLUSIONS This study provides compelling evidence that DML may be used to treat RIF by effectively suppressing mitochondrial oxidative stress injury mediated by MC I. These findings offer valuable insights into the pharmacological mechanisms of DML and its potential clinical application for patients with CKD.
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Affiliation(s)
- Pan Shen
- Department of Rheumatology and Immunology, Zhongnan Hospital, Wuhan University, China.
| | - Xuan Deng
- Department of Nephrology, Zhongnan Hospital, Wuhan University, China.
| | - Tingting Li
- Department of Integrated Chinese Traditional and Western Medicine, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, China
| | - Xiaoqi Chen
- Department of Rheumatology and Immunology, Zhongnan Hospital, Wuhan University, China.
| | - Xiaoyan Wu
- Department of Nephrology, Zhongnan Hospital, Wuhan University, China.
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Wu L, Xue X, He C, Lai Y, Tong L. Cell death‑related molecules and targets in the progression of urolithiasis (Review). Int J Mol Med 2024; 53:52. [PMID: 38666544 PMCID: PMC11090264 DOI: 10.3892/ijmm.2024.5376] [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: 03/05/2024] [Accepted: 04/02/2024] [Indexed: 05/04/2024] Open
Abstract
Urolithiasis is a high‑incidence disease caused by calcium oxalate (mainly), uric acid, calcium phosphate, struvite, apatite, cystine and other stones. The development of kidney stones is closely related to renal tubule cell damage and crystal adhesion and aggregation. Cell death, comprising the core steps of cell damage, can be classified into various types (i.e., apoptosis, ferroptosis, necroptosis and pyroptosis). Different crystal types, concentrations, morphologies and sizes cause tubular cell damage via the regulation of different forms of cell death. Oxidative stress caused by high oxalate or crystal concentrations is considered to be a precursor to a variety of types of cell death. In addition, complex crosstalk exists among numerous signaling pathways and their key molecules in various types of cell death. Urolithiasis is considered a metabolic disorder, and tricarboxylic acid cycle‑related molecules, such as citrate and succinate, are closely related to cell death and the inhibition of stone development. However, a literature review of the associations between kidney stone development, metabolism and various types of cell death is currently lacking, at least to the best of our knowledge. Thus, the present review summarizes the major advances in the understanding of regulated cell death and urolithiasis progression.
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Affiliation(s)
- Liping Wu
- Department of Pharmacy, Ganzhou People's Hospital, Ganzhou, Jiangxi 341099, P.R. China
| | - Xiaoyan Xue
- Department of Pharmacy, Ganzhou People's Hospital, Ganzhou, Jiangxi 341099, P.R. China
| | - Chengwu He
- Department of Urology, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518033, P.R. China
| | - Yongchang Lai
- Department of Urology, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong 518033, P.R. China
- Department of Pharmaceutical Management, School of Medical Business, Guangdong Pharmaceutical University, Guangzhou, Guangdong 510006, P.R. China
| | - Lingfei Tong
- Department of Pharmacy, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, Jiangxi 330006, P.R. China
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7
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Xie T, Yao L, Li X. Advance in Iron Metabolism, Oxidative Stress and Cellular Dysfunction in Experimental and Human Kidney Diseases. Antioxidants (Basel) 2024; 13:659. [PMID: 38929098 PMCID: PMC11200795 DOI: 10.3390/antiox13060659] [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: 05/06/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/28/2024] Open
Abstract
Kidney diseases pose a significant global health issue, frequently resulting in the gradual decline of renal function and eventually leading to end-stage renal failure. Abnormal iron metabolism and oxidative stress-mediated cellular dysfunction facilitates the advancement of kidney diseases. Iron homeostasis is strictly regulated in the body, and disturbance in this regulatory system results in abnormal iron accumulation or deficiency, both of which are associated with the pathogenesis of kidney diseases. Iron overload promotes the production of reactive oxygen species (ROS) through the Fenton reaction, resulting in oxidative damage to cellular molecules and impaired cellular function. Increased oxidative stress can also influence iron metabolism through upregulation of iron regulatory proteins and altering the expression and activity of key iron transport and storage proteins. This creates a harmful cycle in which abnormal iron metabolism and oxidative stress perpetuate each other, ultimately contributing to the advancement of kidney diseases. The crosstalk of iron metabolism and oxidative stress involves multiple signaling pathways, such as hypoxia-inducible factor (HIF) and nuclear factor erythroid 2-related factor 2 (Nrf2) pathways. This review delves into the functions and mechanisms of iron metabolism and oxidative stress, along with the intricate relationship between these two factors in the context of kidney diseases. Understanding the underlying mechanisms should help to identify potential therapeutic targets and develop novel and effective therapeutic strategies to combat the burden of kidney diseases.
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Affiliation(s)
- Tiancheng Xie
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA;
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Li Yao
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, China;
| | - Xiaogang Li
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA;
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
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Luo L, Zhang W, You S, Cui X, Tu H, Yi Q, Wu J, Liu O. The role of epithelial cells in fibrosis: Mechanisms and treatment. Pharmacol Res 2024; 202:107144. [PMID: 38484858 DOI: 10.1016/j.phrs.2024.107144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/19/2024] [Accepted: 03/12/2024] [Indexed: 03/19/2024]
Abstract
Fibrosis is a pathological process that affects multiple organs and is considered one of the major causes of morbidity and mortality in multiple diseases, resulting in an enormous disease burden. Current studies have focused on fibroblasts and myofibroblasts, which directly lead to imbalance in generation and degradation of extracellular matrix (ECM). In recent years, an increasing number of studies have focused on the role of epithelial cells in fibrosis. In some cases, epithelial cells are first exposed to external physicochemical stimuli that may directly drive collagen accumulation in the mesenchyme. In other cases, the source of stimulation is mainly immune cells and some cytokines, and epithelial cells are similarly altered in the process. In this review, we will focus on the multiple dynamic alterations involved in epithelial cells after injury and during fibrogenesis, discuss the association among them, and summarize some therapies targeting changed epithelial cells. Especially, epithelial mesenchymal transition (EMT) is the key central step, which is closely linked to other biological behaviors. Meanwhile, we think studies on disruption of epithelial barrier, epithelial cell death and altered basal stem cell populations and stemness in fibrosis are not appreciated. We believe that therapies targeted epithelial cells can prevent the progress of fibrosis, but not reverse it. The epithelial cell targeting therapies will provide a wonderful preventive and delaying action.
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Affiliation(s)
- Liuyi Luo
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Wei Zhang
- Department of Oral Medicine, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Siyao You
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Xinyan Cui
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Hua Tu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Qiao Yi
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China
| | - Jianjun Wu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China.
| | - Ousheng Liu
- Xiangya Stomatological Hospital & Xiangya School of Stomatology, Central South University, Changsha, Hunan, China; Academician Workstation for Oral-maxilofacial and Regenerative Medicine, Central South University, Changsha, Hunan, China.
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Dong J, Liu M, Bian Y, Zhang W, Yuan C, Wang D, Zhou Z, Li Y, Shi Y. MicroRNA-204-5p Ameliorates Renal Injury via Regulating Keap1/Nrf2 Pathway in Diabetic Kidney Disease. Diabetes Metab Syndr Obes 2024; 17:75-92. [PMID: 38196512 PMCID: PMC10775805 DOI: 10.2147/dmso.s441082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 12/21/2023] [Indexed: 01/11/2024] Open
Abstract
Background Diabetic kidney disease (DKD) is characterized by renal fibrosis, and the pathogenesis of renal fibrosis is still not definitely confirmed. MiR-204-5p plays an important role in the regulation of fibrosis, autophagy and oxidative stress. In this study, we aimed to investigate the role of miR-204-5p on renal damage in diabetic kidneys and the underlying mechanisms involved. Methods In vivo, AAV-Ksp-miR-204-5p mimics were injected into mice via tail vein. In vitro, high glucose-induced HK-2 cells were treated with miR-204-5p inhibitor, miR-204-5p mimics, ATG5 siRNA, tertiary butyl hydroquinone (TBHQ), ML385, or 3-Methyladenine (3-MA). FISH and qRT-PCR were used to detect miR-204-5p expression. The expressions of protein and mRNA were detected by Western blotting, immunofluorescence, immunohistochemistry and qRT-PCR. The concentration of fibronectin in HK-2 cells culture medium was detected by ELISA. Results The expression of miR-204-5p in diabetic kidneys was significantly inhibited than that in control group. Delivering miR-204-5p mimics increased miR-204-5p expression, improved renal function, inhibited renal fibrosis and oxidative stress, and restored autophagy in db/db mice. In vitro, the expression of miR-204-5p was inhibited by HG treatment in HK-2 cells. MiR-204-5p mimics effectively increased miR-204-5p expression and reduced fibronectin and collagen I expression, restored autophagy dysfunction, and increased Nrf2 expression, whereas these alterations were abrogated by Nrf2 inhibitor ML385, autophagy inhibitor 3-methyladenine (3-MA, 5 mM) treatment or ATG5 siRNA transfection in HG-induced HK-2 cells. In addition, miR-204-5p inhibitor significantly inhibited miR-204-5p expression and aggravated HG-induced fibronectin and collagen I expression, autophagy dysfunction, and decreased Nrf2 expression, while these alterations were abolished by Nrf2 activator TBHQ. Furthermore, the binding of miR-204-5p with Keap1 was confirmed by luciferase reporter assay and miR-204-5p negatively regulated Keap1 expression, resulting in the activation of Nrf2 pathway. Conclusion MicroRNA-204-5p protects against the progression of diabetic renal fibrosis by restoring autophagy via regulating Keap1/Nrf2 pathway.
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Affiliation(s)
- Jiajia Dong
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Mengyu Liu
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Yawei Bian
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
- Hebei Key Laboratory of Kidney Disease, Shijiazhuang, People’s Republic of China
| | - Wei Zhang
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Chen Yuan
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Dongyun Wang
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Zihui Zhou
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Yue Li
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
| | - Yonghong Shi
- Department of Pathology, Hebei Medical University, Shijiazhuang, People’s Republic of China
- Hebei Key Laboratory of Kidney Disease, Shijiazhuang, People’s Republic of China
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