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Yang ZJ, Zhang WF, Jin QQ, Wu ZR, Du YY, Shi H, Qu ZS, Han XJ, Jiang LP. Lactate Contributes to Remote Ischemic Preconditioning-Mediated Protection Against Myocardial Ischemia Reperfusion Injury by Facilitating Autophagy via the AMP-Activated Protein Kinase-Mammalian Target of Rapamycin-Transcription Factor EB-Connexin 43 Axis. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:1857-1878. [PMID: 39069170 DOI: 10.1016/j.ajpath.2024.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/06/2024] [Accepted: 07/09/2024] [Indexed: 07/30/2024]
Abstract
Remote ischemic preconditioning (RIPC) exerts a protective role on myocardial ischemia/reperfusion (I/R) injury by the release of various humoral factors. Lactate is a common metabolite in ischemic tissues. Nevertheless, little is known about the role lactate plays in myocardial I/R injury and its underlying mechanism. This investigation revealed that RIPC elevated the level of lactate in blood and myocardium. Furthermore, AZD3965, a selective monocarboxylate transporter 1 inhibitor, and 2-deoxy-d-glucose, a glycolysis inhibitor, mitigated the effects of RIPC-induced elevated lactate in the myocardium and prevented RIPC against myocardial I/R injury. In an in vitro hypoxia/reoxygenation model, lactate markedly mitigated hypoxia/reoxygenation-induced cell damage in H9c2 cells. Further studies suggested that lactate contributed to RIPC, rescuing I/R-induced autophagy deficiency by promoting transcription factor EB (TFEB) translocation to the nucleus through activating the AMP-activated protein kinase (AMPK)-mammalian target of rapamycin (mTOR) pathway without influencing the phosphatidylinositol 3-kinase-Akt pathway, thus reducing cardiomyocyte damage. Interestingly, lactate up-regulated the mRNA and protein expression of connexin 43 (CX43) by facilitating the binding of TFEB to CX43 promoter in the myocardium. Functionally, silencing of TFEB attenuated the protective effect of lactate on cell damage, which was reversed by overexpression of CX43. Further mechanistic studies suggested that lactate facilitated CX43-regulated autophagy via the AMPK-mTOR-TFEB signaling pathway. Collectively, this research demonstrates that RIPC protects against myocardial I/R injury through lactate-mediated myocardial autophagy via the AMPK-mTOR-TFEB-CX43 axis.
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Affiliation(s)
- Zhang-Jian Yang
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Pharmacy, 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Wei-Fang Zhang
- Department of Pharmacy, 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Qing-Qing Jin
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Zhi-Rong Wu
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Yun-Yan Du
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Hao Shi
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Zhen-Sheng Qu
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Xiao-Jian Han
- Institute of Geriatrics, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China.
| | - Li-Ping Jiang
- Jiangxi Provincial Key Laboratory of Drug Targets and Drug Screening, School of Pharmacy, Jiangxi Medical College, Nanchang University, Nanchang, China.
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Gu J, Wu J, Wang C, Xu Z, Jin Z, Yan D, Chen S. BMSCs-derived exosomes inhibit macrophage/microglia pyroptosis by increasing autophagy through the miR-21a-5p/PELI1 axis in spinal cord injury. Aging (Albany NY) 2024; 16:5184-5206. [PMID: 38466640 PMCID: PMC11006467 DOI: 10.18632/aging.205638] [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: 10/10/2023] [Accepted: 01/29/2024] [Indexed: 03/13/2024]
Abstract
Spinal cord injury (SCI) results in a diverse range of disabilities and lacks effective treatment options. In recent years, exosomes derived from bone mesenchymal stem cells (BMSCs) have emerged as a promising cell-free therapeutic approach for treating ischemic brain injury and other inflammatory conditions. Macrophage/microglial pyroptosis has been identified as a contributing factor to neuroinflammation following SCI. The therapeutic potential of BMSC-derived exosomes in macrophage/microglia pyroptosis-induced neuroinflammation, however, has to be determined. Our findings demonstrate that exosomes derived from BMSCs can enhance motor function recovery and mitigate neuroinflammation subsequent to SCI by upregulating the expression of autophagy-related proteins and inhibiting the activation of NLRP3 inflammasomes in macrophage/microglia. Moreover, miR-21a-5p is markedly increased in BMSCs-derived exosomes, and knocking down miR-21a-5p in BMSCs-derived exosomes eliminates the beneficial effects of administration; upregulation of miR-21a-5p in BMSCs-derived exosomes enhances the beneficial effects of administration. Mechanistically, miR-21a-5p positively regulates the autophagy of macrophage/microglia by reducing PELI1 expression, which in turn inhibits their pyroptosis. This research provides novel evidence that exosomes derived from BMSCs can effectively suppress macrophage/microglia pyroptosis through the miR-21a-5p/PELI1 axis-mediated autophagy pathway, ultimately facilitating functional restoration following SCI. In particular, our constructed miR-21a-5p overexpression exosomes greatly improved the efficacy of BMSCs-derived exosomes in treating spinal cord injury. These results establish a foundation for the prospective utilization of exosomes derived from BMSCs as a novel biological intervention for spinal cord injury.
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Affiliation(s)
- Jun Gu
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Jingyi Wu
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Chunming Wang
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Zhenwei Xu
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Zhengshuai Jin
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Donghua Yan
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
| | - Sheng Chen
- The Affiliated Jiangsu Shengze Hospital of Nanjing Medical University, Suzhou, China
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Hou Y, Shi P, Du H, Zhu C, Tang C, Que L, Zhu G, Liu L, Chen Q, Li C, Shao G, Li Y, Li J. HNF4α ubiquitination mediated by Peli1 impairs FAO and accelerates pressure overload-induced myocardial hypertrophy. Cell Death Dis 2024; 15:135. [PMID: 38346961 PMCID: PMC10861518 DOI: 10.1038/s41419-024-06470-7] [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: 09/21/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 02/15/2024]
Abstract
Impaired fatty acid oxidation (FAO) is a prominent feature of metabolic remodeling observed in pathological myocardial hypertrophy. Hepatocyte nuclear factor 4alpha (HNF4α) is closely associated with FAO in both cellular processes and disease conditions. Pellino 1 (Peli1), an E3 ligase containing a RING-like domain, plays a crucial role in catalyzing polyubiquitination of various substrates. In this study, we aimed to investigate the involvement of HNF4α and its ubiquitination, facilitated by Peli1, in FAO during pressure overload-induced cardiac hypertrophy. Peli1 systemic knockout mice (Peli1KO) display improved myocardial hypertrophy and cardiac function following transverse aortic constriction (TAC). RNA-seq analysis revealed that changes in gene expression related to lipid metabolism caused by TAC were reversed in Peli1KO mice. Importantly, both HNF4α and its downstream genes involved in FAO showed a significant increase in Peli1KO mice. We further used the antagonist BI6015 to inhibit HNF4α and delivered rAAV9-HNF4α to elevate myocardial HNF4α level, and confirmed that HNF4α inhibits the development of cardiac hypertrophy after TAC and is essential for the enhancement of FAO mediated by Peli1 knockout. In vitro experiments using BODIPY incorporation and FAO stress assay demonstrated that HNF4α enhances FAO in cardiomyocytes stimulated with angiotension II (Ang II), while Peli1 suppresses the effect of HNF4α. Mechanistically, immunoprecipitation and mass spectrometry analyses confirmed that Peli1 binds to HNF4α via its RING-like domain and promotes HNF4α ubiquitination at residues K307 and K309. These findings shed light on the underlying mechanisms contributing to impaired FAO and offer valuable insights into a promising therapeutic strategy for addressing pathological cardiac hypertrophy.
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Affiliation(s)
- Yuxing Hou
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Pengxi Shi
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Haiyang Du
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Chenghao Zhu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Chao Tang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
- Department of Pathology and Pathophysiology, School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Linli Que
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Guoqing Zhu
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, 211166, China
| | - Li Liu
- Department of Geriatrics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China
| | - Qi Chen
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China
| | - Chuanfu Li
- Department of Surgery, East Tennessee State University, Campus Box 70575, Johnson City, TN, 37614-0575, USA
| | - Guoqiang Shao
- Department of nuclear medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210029, China.
| | - Yuehua Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China.
| | - Jiantao Li
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, School of Basic Medical Science, Nanjing Medical University, Nanjing, 211166, China.
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Yan L, Cui Y, Feng J. Biology of Pellino1: a potential therapeutic target for inflammation in diseases and cancers. Front Immunol 2023; 14:1292022. [PMID: 38179042 PMCID: PMC10765590 DOI: 10.3389/fimmu.2023.1292022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/04/2023] [Indexed: 01/06/2024] Open
Abstract
Pellino1 (Peli1) is a highly conserved E3 Ub ligase that exerts its biological functions by mediating target protein ubiquitination. Extensive evidence has demonstrated the crucial role of Peli1 in regulating inflammation by modulating various receptor signaling pathways, including interleukin-1 receptors, Toll-like receptors, nuclear factor-κB, mitogen-activated protein kinase, and phosphoinositide 3-kinase/AKT pathways. Peli1 has been implicated in the development of several diseases by influencing inflammation, apoptosis, necrosis, pyroptosis, autophagy, DNA damage repair, and glycolysis. Peli1 is a risk factor for most cancers, including breast cancer, lung cancer, and lymphoma. Conversely, Peli1 protects against herpes simplex virus infection, systemic lupus erythematosus, esophageal cancer, and toxic epidermolysis bullosa. Therefore, Peli1 is a potential therapeutic target that warrants further investigation. This comprehensive review summarizes the target proteins of Peli1, delineates their involvement in major signaling pathways and biological processes, explores their role in diseases, and discusses the potential clinical applications of Peli1-targeted therapy, highlighting the therapeutic prospects of Peli1 in various diseases.
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Affiliation(s)
| | | | - Juan Feng
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
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Cen X, Li Z, Chen X. Ubiquitination in the regulation of autophagy. Acta Biochim Biophys Sin (Shanghai) 2023; 55:1348-1357. [PMID: 37587758 PMCID: PMC10520486 DOI: 10.3724/abbs.2023149] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 06/01/2023] [Indexed: 08/18/2023] Open
Abstract
Autophagy, an efficient and effective approach to clear rapidly damaged organelles, macromolecules, and other harmful cellular components, enables the recycling of nutrient materials and supply of nutrients to maintain cellular homeostasis. Ubiquitination plays an important regulatory role in autophagy. This paper summarizes the most recent progress in ubiquitin modification in various stages of autophagy, including initiation, elongation, and termination. Moreover, this paper shows that ubiquitination is an important way through which selective autophagy achieves substrate specificity. Furthermore, we note the distinction between monoubiquitination and polyubiquitination in the regulation of autophagy. Compared with monoubiquitination, polyubiquitination is a more common strategy to regulate the activity of the autophagy molecular machinery. In addition, the role of ubiquitination in the closure and fusion of autophagosomes warrants further study. This article not only clarifies the regulatory mechanism of autophagy but also contributes to a deeper understanding of the importance of ubiquitination modification.
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Affiliation(s)
- Xueyan Cen
- Hubei Key laboratory of Edible Wild Plants Conservation & UtilizationHubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologySchool of Life ScienceHubei Normal UniversityHuangshi435002China
| | - Ziling Li
- Hubei Key laboratory of Edible Wild Plants Conservation & UtilizationHubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologySchool of Life ScienceHubei Normal UniversityHuangshi435002China
| | - Xinpeng Chen
- Hubei Key laboratory of Edible Wild Plants Conservation & UtilizationHubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization TechnologySchool of Life ScienceHubei Normal UniversityHuangshi435002China
- National Laboratory of BiomacromoleculesCAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing100101China
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