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Li C, Li Q, Jiang R, Zhang C, Qi E, Wu M, Zhang M, Zhao H, Zhao F, Zhou H. Dynamic changes in pyroptosis following spinal cord injury and the identification of crucial molecular signatures through machine learning and single-cell sequencing. J Pharm Biomed Anal 2024; 251:116449. [PMID: 39217701 DOI: 10.1016/j.jpba.2024.116449] [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: 03/15/2024] [Revised: 08/21/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
The pathological cascade of spinal cord injury (SCI) is highly intricate. The onset of neuroinflammation can exacerbate the extent of damage. Pyroptosis is a form of inflammation-linked programmed cell death (PCD), the inhibition of pyroptosis can partially mitigate neuroinflammation. It is imperative to delineate the principal cell types susceptible to pyroptosis and concomitantly identify key genes associated with this process. We initially defined the pyroptosis-related genes (PRGs) and analyzed their expression at different time points post SCI. The results demonstrate a substantial upregulation of differentially expressed genes (DEGs) related to pyroptosis on the 7 days post-injury (dpi), these DEGs in the 7 dpi are closely related to the inflammatory response. Subsequently, immune infiltration analysis revealed a predominant presence of inflammatory microglia. Through correlation analysis, we postulated that pyroptosis primarily manifested within the inflammatory microglia. Employing machine learning algorithms, we identified four pyroptosis-related molecular signatures, which were experimentally validated using BV2 cells and spinal cord tissue samples. The robustness of the identified molecular signatures was further confirmed through single-cell sequencing data analysis. Overall, our study elucidates the temporal dynamics of pyroptosis and identifies key molecular signatures following SCI. These findings can provide novel evidence for therapeutic interventions in SCI.
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Affiliation(s)
- Chuang Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China; Department of Orthopaedics, The Second Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, PR China.
| | - Qingyang Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Ruizhi Jiang
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Chi Zhang
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Enlin Qi
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Mingxin Wu
- Department of Orthopaedics, Tianjin Medical University General Hospital, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin 300052, PR China.
| | - Mingzhe Zhang
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Hua Zhao
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Fenge Zhao
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
| | - Hengxing Zhou
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan 250012, PR China.
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Zhou Z, Jiang WJ, Wang YP, Si JQ, Zeng XS, Li L. CD36-mediated ROS/PI3K/AKT signaling pathway exacerbates cognitive impairment in APP/PS1 mice after noise exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 952:175879. [PMID: 39233068 DOI: 10.1016/j.scitotenv.2024.175879] [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: 06/25/2024] [Revised: 08/22/2024] [Accepted: 08/28/2024] [Indexed: 09/06/2024]
Abstract
There is an association between noise exposure and cognitive impairment, and noise may have a more severe impact on patients with Alzheimer's disease (AD) and mild cognitive impairment; however, the mechanisms need further investigation. This study used the classic AD animal model APP/PS1 mice to simulate the AD population, and C57BL/6J mice to simulate the normal population. We compared their cognitive abilities after noise exposure, analyzed changes in Cluster of Differentiation (CD) between the two types of mice using transcriptomics, identified the differential CD molecule: CD36 in APP/PS1 after noise exposure, and used its pharmacological inhibitor to intervene to explore the mechanism by which CD36 affects APP/PS1 cognitive abilities. Our study shows that noise exposure has a more severe impact on the cognitive abilities of APP/PS1 mice, and that the expression trends of differentiation cluster molecules differ significantly between C57BL/6J and APP/PS1 mice. Transcriptomic analysis showed that the expression of CD36 in the hippocampus of APP/PS1 mice increased by 2.45-fold after noise exposure (p < 0.001). Meanwhile, Western Blot results from the hippocampus and entorhinal cortex indicated that CD36 protein levels increased by approximately 1.5-fold (p < 0.001) and 1.3-fold (p < 0.05) respectively, after noise exposure in APP/PS1 mice. The changes in CD36 expression elevated oxidative stress levels in the hippocampus and entorhinal cortex, leading to a decrease in PI3K/AKT phosphorylation, which in turn increased M1-type microglia and A1-type astrocytes while reducing the numbers of M2-type microglia and A2-type astrocytes. This increased neuroinflammation in the hippocampus and entorhinal cortex, causing synaptic and neuronal damage in APP/PS1 mice, ultimately exacerbating cognitive impairment. These findings may provide new insights into the relationship between noise exposure and cognitive impairment, especially given the different expression trends of CD molecules in the two types of mice, which warrants further research.
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Affiliation(s)
- Zan Zhou
- Department of Physiology, Medical College of Jiaxing University, Jiaxing, Zhejiang 314000, China; Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832000, China; The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi 832000, Xinjiang, China
| | - Wen-Jun Jiang
- Department of Physiology, Medical College of Jiaxing University, Jiaxing, Zhejiang 314000, China; Department of Physiology, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310051, China
| | - Yan-Ping Wang
- Department of Nursing, Medical College of Jiaxing University, Jiaxing, Zhejiang 314000, China
| | - Jun-Qiang Si
- Department of Physiology, Medical College of Shihezi University, Shihezi, Xinjiang 832000, China; The Key Laboratory of Xinjiang Endemic and Ethnic Diseases, Medical College of Shihezi University, Shihezi 832000, Xinjiang, China
| | - Xian-Si Zeng
- Department of Physiology, Medical College of Jiaxing University, Jiaxing, Zhejiang 314000, China.
| | - Li Li
- Department of Physiology, Medical College of Jiaxing University, Jiaxing, Zhejiang 314000, China.
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Shi C, Dai J, Chang L, Xu W, Huang C, Zhao Z, Li H, Zhu L, Xu Y. Design, synthesis and structure-activity relationship of malonic acid non-nucleoside derivatives as potent CD73 inhibitors. Bioorg Med Chem Lett 2024; 112:129946. [PMID: 39226996 DOI: 10.1016/j.bmcl.2024.129946] [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: 07/26/2024] [Revised: 08/22/2024] [Accepted: 08/31/2024] [Indexed: 09/05/2024]
Abstract
High levels of extracellular adenosine in tumor microenvironment (TME) has extensive immunosuppressive effect. CD73 catalyzes the conversion of AMP into adenosine and regulates its production. Inhibiting CD73 can reduce the level of adenosine and reverse adenosine-mediated immune suppression. Therefore, CD73 has emerged as a valuable target for cancer immunotherapy. Here, a new series of malonic acid non-nucleoside derivatives were designed, synthesized and evaluated as CD73 inhibitors. Among them, compounds 18 and 19 exhibited significant inhibition activities against hCD73 with IC50 values of 0.28 μM and 0.10 μM, respectively, suggesting the feasibility of replacing the benzotriazole moiety in the lead compound. This study explored the novelty and structural diversity of CD73 inhibitors.
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Affiliation(s)
- Cunjian Shi
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Jingqi Dai
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Longfeng Chang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Wenyue Xu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Chulu Huang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Zhenjiang Zhao
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Honglin Li
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China; Innovation Center for AI and Drug Discovery, East China Normal University, Shanghai 200062, China; Lingang Laboratory, Shanghai 200031, China
| | - Lili Zhu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Yufang Xu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
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Han K, Wang F, Ma X, Wu Y, Zhang H, Zhao Y, Wang H, Ma J, Luan X. Human placental mesenchymal stromal cells alleviate intestinal oxidative damage in mice with graft-versus-host disease via CD73/adenosine/PI3K/Akt/GSK-3β axis. Cell Signal 2024; 123:111372. [PMID: 39209221 DOI: 10.1016/j.cellsig.2024.111372] [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: 06/05/2024] [Revised: 08/03/2024] [Accepted: 08/26/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Intestinal damage is a common and serious complication in patients with graft-versus-host disease (GVHD). Human placental mesenchymal stromal cells (hPMSCs) ameliorate GVHD tissue damage by exerting anti-oxidative effects; however, the underlying mechanisms remain not fully clear. METHODS A GVHD mouse model and tumor necrosis factor-α (TNF-α)-stimulated human colon epithelial cell lines NCM460 and HT-29 cells were used to investigate the mechanisms of hPMSCs alleviating GVHD-induced intestinal oxidative damage. RESULTS hPMSCs reduced TNF-α concentrations and the number of CD3+TNF-α+ T-cells, which were negatively correlated with the expression of claudin-1, occludin, and ZO-1, through CD73 in the colon tissue of GVHD mice. Meanwhile, hPMSCs reduced the mean fluorescence intensity (MFI) of reactive oxygen species (ROS) and the concentration of malondialdehyde (MDA), promoted superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) activities, as well as claudin-1, occludin, and ZO-1 expression, in colonic epithelial cells of GVHD mice and TNF-α-stimulated cells via CD73. Moreover, hPMSCs upregulated adenosine (ADO) concentrations in GVHD mice and TNF-α-stimulated cells and mitigated the loss of tight junction proteins via the CD73/ADO/ADO receptors. Further analysis showed that hPMSCs diminished Fyn expression and enhanced Nrf2, GCLC, and HO-1 expression in both TNF-α-stimulated cells and colonic epithelial cells of GVHD mice by activating PI3K/Akt/GSK-3β pathway. CONCLUSIONS The results suggested that hPMSC-mediated redox metabolism balance and promoted tight junction protein expression were achieved via CD73/ADO/PI3K/Akt/GSK-3β/Fyn/Nrf2 axis, by which alleviating intestinal oxidative injury in GVHD mice.
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Affiliation(s)
- Kaiyue Han
- Department of Immunology, Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Feifei Wang
- Anesthesiology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Xiaolin Ma
- Hematology, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong Province, China
| | - Yunhua Wu
- Department of Immunology, Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Hengchao Zhang
- Yantaishan Hospital Affiliated to Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Yaxuan Zhao
- Department of Immunology, Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Hua Wang
- Hematology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, 264000, Shandong Province, China
| | - Junjie Ma
- Yuhuangding Hospital Affiliated to Qingdao University, Yantai, 264000, Shandong Province, China.
| | - Xiying Luan
- Department of Immunology, Binzhou Medical University, Yantai, 264000, Shandong Province, China.
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Yan P, Guo M, Gan Y, Zhu M, Han X, Wu J. Early pregnancy exposure to Microcystin-LR compromises endometrial decidualization in mice via the PI3K/AKT/FOXO1 signaling pathway. CHEMOSPHERE 2024:143466. [PMID: 39369752 DOI: 10.1016/j.chemosphere.2024.143466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 09/02/2024] [Accepted: 10/03/2024] [Indexed: 10/08/2024]
Abstract
Previous experimental studies have found that exposure to Microcystin-leucine arginine can impact pregnancy outcomes in female mice. The impact of MC-LR on early pregnancy in mammals is not yet well understood. Both mice and humans need to undergo decidualization to maintain pregnancy. In this study, we tried to evaluate whether MC-LR affects decidualization process in mice. Our research showed that MC-LR decreased maternal weight gain, uterine weight, and implantation site weight. These findings suggested that MC-LR exerted adverse effects on decidualization. In mice, we examined decreased number of polyploid decidual cells, but marked proliferation of mouse endometrial stromal cells the expression levels of prolactin (PRL)and insulin-like growth factor binding protein 1 (IGFBP1) were significantly downregulated in the decidual tissue and primary endometrial stromal cells following MC-LR treatment. Furthermore, further in vitro experiments identified that MC-LR promoted endometrial stromal cell division and cycle transition. Lastly, our study demonstrated that MC-LR impaired decidualization through the PI3K/AKT/FOXO1 pathway. Collectively, these data suggested that exposure to MC-LR impaired decidualization during early pregnancy.
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Affiliation(s)
- Pinru Yan
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Meihong Guo
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Yibin Gan
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Mengjiao Zhu
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Xiaodong Han
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Hankou Road 22, Nanjing, 210093, China.
| | - Jiang Wu
- State Key Laboratory of Analytical Chemistry for Life Science & Jiangsu Key Laboratory of Molecular Medicine, Division of Anatomy and Histo-embryology, Medical School, Nanjing University, Nanjing, Jiangsu 210093, China; Immunology and Reproductive Biology Laboratory, Medical School, Nanjing University, Hankou Road 22, Nanjing, 210093, China.
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Liu Y, Zhao C, Zhang R, Pang Y, Li L, Feng S. Progression of mesenchymal stem cell regulation on imbalanced microenvironment after spinal cord injury. Stem Cell Res Ther 2024; 15:343. [PMID: 39354635 PMCID: PMC11446099 DOI: 10.1186/s13287-024-03914-x] [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: 04/27/2024] [Accepted: 09/01/2024] [Indexed: 10/03/2024] Open
Abstract
Spinal cord injury (SCI) results in significant neural damage and inhibition of axonal regeneration due to an imbalanced microenvironment. Extensive evidence supports the efficacy of mesenchymal stem cell (MSC) transplantation as a therapeutic approach for SCI. This review aims to present an overview of MSC regulation on the imbalanced microenvironment following SCI, specifically focusing on inflammation, neurotrophy and axonal regeneration. The application, limitations and future prospects of MSC transplantation are discussed as well. Generally, a comprehensive perspective is provided for the clinical translation of MSC transplantation for SCI.
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Affiliation(s)
- Yifan Liu
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China
- Institute of Medical Sciences, The Second Hospital of Shandong University, Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan, 250033, Shandong, China
| | - Chenxi Zhao
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China
| | - Rong Zhang
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China
| | - Yilin Pang
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Linquan Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China
| | - Shiqing Feng
- Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University Centre for Orthopaedics, Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, 107 West Wenhua Road, Lixia District, Jinan, 250012, Shandong, China.
- Institute of Medical Sciences, The Second Hospital of Shandong University, Shandong University Center for Orthopaedics, Cheeloo College of Medicine, Shandong University, Jinan, 250033, Shandong, China.
- Department of Orthopedics, International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord Injury, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China.
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Xi X, Zhang R, Chi Y, Zhu Z, Sun R, Gong W. TXNIP Regulates NLRP3 Inflammasome-Induced Pyroptosis Related to Aging via cAMP/PKA and PI3K/Akt Signaling Pathways. Mol Neurobiol 2024; 61:8051-8068. [PMID: 38460079 DOI: 10.1007/s12035-024-04089-5] [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: 10/25/2023] [Accepted: 03/02/2024] [Indexed: 03/11/2024]
Abstract
Aging is an inevitable natural process with time-dependent dysfunction and the occurrence of various diseases, which impose heavy burdens on individuals, families, and society. It has been reported that NLRP3 inflammasome-induced pyroptosis contributes significantly to age-related diseases and aging, while TXNIP is suggested to be involved in regulating pyroptosis mediated by NLRP3. However, the mechanism between TXNIP and NLRP3 inflammasome is still unclear. In this study, we used HT-22 cells to explore the effect of TXNIP on pyroptosis and its potential association with the aging. Also, we delved into the underlying mechanisms. Our findings revealed that TXNIP significantly augmented pyroptosis in HT-22 cells, primarily by enhancing the activation of the NLRP3 inflammasome and promoting the release of proinflammatory cytokines. Remarkably, as TXNIP levels increased, we observed a corresponding rise in the number of p16-positive cells, which is indicative of aging. Furthermore, we conducted experiments to modulate the improvement of TXNIP on NLRP3 inflammasome-induced pyroptosis, that is, the PI3K activator 740 Y-P and the PKA activator DC2797 inhibited the effect, while the PI3K inhibitor LY294002 and the PKA inhibitor H89 enhanced the effect. In conclusion, our study demonstrated that TXNIP regulates NLRP3 inflammasome-induced pyroptosis in HT-22 cells related to aging via the PI3K/Akt and cAMP/PKA pathways.
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Affiliation(s)
- Xiaoshuang Xi
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China
- Beijing Rehabilitation Medicine Academy, Capital Medical University, Beijing, China
| | - Rong Zhang
- The Second Clinical Medical College, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
| | - Yijia Chi
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China
- Beijing Rehabilitation Medicine Academy, Capital Medical University, Beijing, China
| | - Ziman Zhu
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China
- Beijing Rehabilitation Medicine Academy, Capital Medical University, Beijing, China
| | - Ruifeng Sun
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China
- Beijing Rehabilitation Medicine Academy, Capital Medical University, Beijing, China
| | - Weijun Gong
- Department of Neurological Rehabilitation, Beijing Rehabilitation Hospital, Capital Medical University, Beijing, China.
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Cao Y, Qiao L, Song Y, Yan Y, Ni Y, Xi H, Chen J, Li S, Liu H. Caspase-1 Inhibition Ameliorates Photoreceptor Damage Following Retinal Detachment by Inhibiting Microglial Pyroptosis. THE AMERICAN JOURNAL OF PATHOLOGY 2024; 194:1924-1937. [PMID: 39032599 DOI: 10.1016/j.ajpath.2024.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 05/31/2024] [Accepted: 06/10/2024] [Indexed: 07/23/2024]
Abstract
Retinal detachment (RD) is a sight-threatening condition that occurs in several retinal diseases. Microglia that reside in retina are activated after RD and play a role in the death of photoreceptor cells. The involvement of microglial pyroptosis in the early pathological process of RD is still unclear. VX-765, an inhibitor of caspase-1, may exert neuroprotective effects by targeting microglial pyroptosis in nervous system disease; however, whether it plays a role in RD is uncertain. This study detected and localized pyroptosis to specific cells by immunofluorescence co-staining and flow cytometry in rat RD models. The majority of gasdermin D N-terminal (GSDMD-N)-positive cells exhibited IBA1-positive or P2RY12-positive microglia in the early stage of RD, indicating the pyroptosis of microglia. Administration of VX-765 shifted the microglia phenotype from M1 to M2, inhibited microglial migration toward the outer nuclear layer (ONL) post-RD, and most importantly, inhibited microglial pyroptosis. The thickness of ONL increased with VX-765 administration, and the photoreceptors were more structured and orderly under hematoxylin and eosin staining and transmission electron microscopy, revealing the protective effects of VX-765 on photoreceptors. Overall, this study demonstrated that inflammation induced by pyroptosis of microglia is the early pathological process of RD. VX-765 may serve as a candidate therapeutic approach for the treatment of RD by targeting microglia.
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Affiliation(s)
- Yumei Cao
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China
| | - Lei Qiao
- Central Laboratory, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China
| | - Yingying Song
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China
| | - Yuanye Yan
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China
| | - Yewen Ni
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China
| | - Huiyu Xi
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China
| | - Jiayu Chen
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China
| | - Suyan Li
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China.
| | - Haiyang Liu
- Department of Ophthalmology, The Affiliated Xuzhou Municipal Hospital of Xuzhou Medical University, Xuzhou First People's Hospital, Eye Disease Prevention and Treatment Institute of Xuzhou, Xuzhou, China; Xuzhou Medical University, Xuzhou, China.
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9
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Zhang B, Yu J, Bao L, Feng D, Qin Y, Fan D, Hong X, Chen Y. Cynarin inhibits microglia-induced pyroptosis and neuroinflammation via Nrf2/ROS/NLRP3 axis after spinal cord injury. Inflamm Res 2024:10.1007/s00011-024-01945-x. [PMID: 39340662 DOI: 10.1007/s00011-024-01945-x] [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: 07/14/2024] [Revised: 08/23/2024] [Accepted: 09/02/2024] [Indexed: 09/30/2024] Open
Abstract
BACKGROUND Spinal cord injury (SCI) elicits excess neuroinflammation and resident microglial pyroptosis, leading further terrible neurological collapse and locomotor dysfunction. However, the current clinical therapy is useless and a feasible treatment is urgent to be explored. Cynarin is a natural component in artichoke playing anti-inflammatory and anti-aging roles in hepatoprotection and cardioprotection, but it is unclear that the pharmacologic action and underlying mechanism of Cynarin in neuropathy. METHODS Using the SCI mouse model and the BV2 cell line, we here investigated whether Cynarin reduces neuroinflammation and pyroptosis to promote neurological recovery after SCI. RESULTS Our results showed that treatment with Cynarin reduces the level of neuroinflammation and microglial pyroptosis. Moreover, the mice treated with Cynarin exhibited lower level of reactive oxygen species (ROS) and cell death, less damage of neurohistology and better locomotor improvement of hindlimbs than the untreated mice and the nuclear factor erythroid 2-related factor 2 (Nrf2)-inhibited mice. Mechanically, Cynarin inhibited the assembly of NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome by Nrf2-dependent expression to attenuate microglial pyroptosis and neuroinflammation. CONCLUSIONS To sum up, the current study suggested that administration of Cynarin is a promising compound for anti-neuroinflammation and anti-pyroptosis after SCI. It may be an efficient Nrf2 activator and a NLRP3 inhibitor for microglia in neuropathies.
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Affiliation(s)
- Bin Zhang
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China.
| | - Jiasheng Yu
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China
| | - Lei Bao
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China
| | - Dongqian Feng
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China
| | - Yong Qin
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China
| | - Daobo Fan
- Department of Orthopedics, Shuyang Hospital of Traditional Chinese Medicine, Clinical College of Yangzhou University Medical College, No. 28 Shanghai Middle Road, Shuyang, Suqian, Jiangsu, China
| | - Xin Hong
- Spine Center, Zhongda Hospital of Southeast University, Nanjing, China
| | - Yongyi Chen
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China.
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10
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Liu Y, Pan R, Ouyang Y, Gu W, Xiao T, Yang H, Tang L, Wang H, Xiang B, Chen P. Pyroptosis in health and disease: mechanisms, regulation and clinical perspective. Signal Transduct Target Ther 2024; 9:245. [PMID: 39300122 DOI: 10.1038/s41392-024-01958-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 08/14/2024] [Accepted: 08/26/2024] [Indexed: 09/22/2024] Open
Abstract
Pyroptosis is a type of programmed cell death characterized by cell swelling and osmotic lysis, resulting in cytomembrane rupture and release of immunostimulatory components, which play a role in several pathological processes. Significant cellular responses to various stimuli involve the formation of inflammasomes, maturation of inflammatory caspases, and caspase-mediated cleavage of gasdermin. The function of pyroptosis in disease is complex but not a simple angelic or demonic role. While inflammatory diseases such as sepsis are associated with uncontrollable pyroptosis, the potent immune response induced by pyroptosis can be exploited as a therapeutic target for anti-tumor therapy. Thus, a comprehensive review of the role of pyroptosis in disease is crucial for further research and clinical translation from bench to bedside. In this review, we summarize the recent advancements in understanding the role of pyroptosis in disease, covering the related development history, molecular mechanisms including canonical, non-canonical, caspase 3/8, and granzyme-mediated pathways, and its regulatory function in health and multiple diseases. Moreover, this review also provides updates on promising therapeutic strategies by applying novel small molecule inhibitors and traditional medicines to regulate pyroptosis. The present dilemmas and future directions in the landscape of pyroptosis are also discussed from a clinical perspective, providing clues for scientists to develop novel drugs targeting pyroptosis.
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Affiliation(s)
- Yifan Liu
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
- Department of Oncology, Xiangya Hospital, Central South University, 87th Xiangya road, Changsha, 410008, Hunan province, China
| | - Renjie Pan
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Yuzhen Ouyang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
- Department of Neurology, Xiangya Hospital, Central South University, 87th Xiangya road, Changsha, 410008, Hunan province, China
| | - Wangning Gu
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Tengfei Xiao
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Hongmin Yang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Ling Tang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China
| | - Hui Wang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
| | - Bo Xiang
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
| | - Pan Chen
- The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, 410013, China.
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11
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Qin X, Zhang X, He X, Xu H, Yao Q, Li Z, Feng Y, Zhong Y, Li Z, Lv G, Wang Y. Neuron-derived Netrin-1 deficiency aggravates spinal cord injury through activating the NF-κB signaling pathway. Heliyon 2024; 10:e37388. [PMID: 39290272 PMCID: PMC11407054 DOI: 10.1016/j.heliyon.2024.e37388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 08/24/2024] [Accepted: 09/02/2024] [Indexed: 09/19/2024] Open
Abstract
Netrin-1 (NTN1) is involved in psychological alterations caused by central nerve system diseases. The primary objective of this research was to investigate whether a deficiency of neuron-derived NTN1 in the remote brain regions affects SCI outcomes. To examine the roles and mechanisms of neuron-derived NTN1 during SCI, Western blots, Nissl staining, immunochemical technique, RNA-sequence, and related behavioral tests were conducted in the study. Our study revealed that mice lacking NTN1 exhibited normal morphological structure of the spinal cords, hippocampus, and neurological function. While neuron-derived NTN1deletion mechanistically disrupted neuronal regeneration and aggregates neuronal apoptosis and ferroptosis in the intermediate phase following SCI. Additionally, neuroinflammation was significantly enhanced in the early phase, which could be related to activation of the NF-κB signaling pathway. Overall, our findings indicate that the deletion of neuron-derived NTN1 leads to the activation of the NF-κB pathway, contributing to the promotion of neuronal apoptosis and ferroptosis, and the pathological progression of SCI.
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Affiliation(s)
- Xiaojian Qin
- Department of Orthopaedics. The First Affiliated Hospital, China Medical University, Shenyang, 110001, Liaoning Province, China
| | - Xiaolan Zhang
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Xiaodong He
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Hui Xu
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Qiannan Yao
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Zifeng Li
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Yayun Feng
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Yichen Zhong
- Department of Pharmacology, Life Science and Biopharmaceutical Institution, Shenyang Pharmaceutical University, Shenyang, 110016, Liaoning Province, China
| | - Ziyang Li
- Department of Orthopaedics. The First Affiliated Hospital, China Medical University, Shenyang, 110001, Liaoning Province, China
| | - Gang Lv
- Department of Orthopaedics. The First Affiliated Hospital, China Medical University, Shenyang, 110001, Liaoning Province, China
| | - Yanfeng Wang
- Department of Orthopaedics. The First Affiliated Hospital, China Medical University, Shenyang, 110001, Liaoning Province, China
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12
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Song H, Pang R, Chen Z, Wang L, Hu X, Feng J, Wang W, Liu J, Zhang A. Every-other-day fasting inhibits pyroptosis while regulating bile acid metabolism and activating TGR5 signaling in spinal cord injury. Front Mol Neurosci 2024; 17:1466125. [PMID: 39328272 PMCID: PMC11424537 DOI: 10.3389/fnmol.2024.1466125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2024] [Accepted: 09/02/2024] [Indexed: 09/28/2024] Open
Abstract
Every-other-day fasting (EODF) is a form of caloric restriction that alternates between periods of normal eating and fasting, aimed at preventing and treating diseases. This approach has gained widespread usage in basic research on neurological conditions, including spinal cord injury, and has demonstrated significant neuroprotective effects. Additionally, EODF is noted for its safety and feasibility, suggesting broad potential for application. This study aims to evaluate the therapeutic effects of EODF on spinal cord injury and to investigate and enhance its underlying mechanisms. Initially, the SCI rat model was utilized to evaluate the effects of EODF on pathological injury and motor function. Subsequently, considering the enhancement of metabolism through EODF, bile acid metabolism in SCI rats was analyzed using liquid chromatography-mass spectrometry (LC-MS), and the expression of the bile acid receptor TGR5 was further assessed. Ultimately, it was confirmed that EODF influences the activation of microglia and NLRP3 inflammasomes associated with the TGR5 signaling, along with the expression of downstream pyroptosis pathway related proteins and inflammatory cytokines, as evidenced by the activation of the NLRP3/Caspase-1/GSDMD pyroptosis pathway in SCI rats. The results demonstrated that EODF significantly enhanced the recovery of motor function and reduced pathological damage in SCI rats while controlling weight gain. Notably, EODF promoted the secretion of bile acid metabolites, activated TGR5, and inhibited the NLRP3/Caspase-1/GSDMD pyroptosis pathway and inflammation in these rats. In summary, EODF could mitigate secondary injury after SCI and foster functional recovery by improving metabolism, activating the TGR5 signaling and inhibiting the NLRP3 pyroptosis pathway.
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Affiliation(s)
- Honghu Song
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Rizhao Pang
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Zhixuan Chen
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Linjie Wang
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Xiaomin Hu
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Jingzhi Feng
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Wenchun Wang
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Jiancheng Liu
- Department of Rehabilitation Medicine, General Hospital of Western Theater Command, Chengdu, China
| | - Anren Zhang
- Department of Rehabilitation Medicine, Shanghai Fourth People's Hospital Affiliated to Tongji University, Shanghai, China
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13
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Tang S, Xing W, Yan J, Wang L, Li Z, Wang Y, Gu N, Sun X. TREM2 alleviates long-term cognitive dysfunction after subarachnoid hemorrhage in mice by attenuating hippocampal neuroinflammation via PI3K/Akt signaling pathway. Brain Res 2024; 1846:149235. [PMID: 39270995 DOI: 10.1016/j.brainres.2024.149235] [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: 07/07/2024] [Revised: 09/03/2024] [Accepted: 09/08/2024] [Indexed: 09/15/2024]
Abstract
Subarachnoid hemorrhage (SAH) often leads to long-term cognitive deficits in patients, particularly due to injury to brain regions such as the hippocampus. This study aims to investigate the role of the triggering receptor expressed on myeloid cells 2 (TREM2) in mitigating hippocampal injury and associated cognitive impairments following SAH. To explore the protective effects of TREM2, we utilized the TREM2 agonist COG1410 to upregulate TREM2 expression and employed TREM2 knockout (KO) mice to verify the necessity of TREM2 for this protective role. The study further examined the involvement of the PI3K/Akt signaling pathway in TREM2-mediated neuroprotection. Our findings indicate that the upregulation of TREM2 significantly alleviated long-term cognitive deficits and promoted the recovery of hippocampal neural activity post-SAH. The neuroprotective effects were linked to reduced microglial activation and decreased secretion of inflammatory factors within the hippocampus. In contrast, TREM2 KO mice did not exhibit these protective effects. Furthermore, inhibition of the PI3K/Akt pathway also diminished these protective effects of TREM2 upregulation and worsened cognitive outcomes. In conclusion, TREM2 upregulation mitigates long-term cognitive dysfunction following SAH by attenuating hippocampal neuroinflammation via the PI3K/Akt signaling pathway. These findings suggest that TREM2 could be a potential therapeutic target for improving cognitive outcomes after SAH.
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Affiliation(s)
- Shuang Tang
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Cerebrovascular Disease Center, Suining Central Hospital, Suining, Chongqing, China
| | - Wenli Xing
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Cerebrovascular Disease Center, Suining Central Hospital, Suining, Chongqing, China
| | - Jin Yan
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lin Wang
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Department of Neurosurgery, Nanchong Central Hospital, The Second Clinical Medical College of North Sichuan Medical College, Nanchong, China
| | - Zhao Li
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China; Department of Neurosurgery, Chengdu Integrated TCM & Western Medicine Hospital, Chengdu, China
| | - Yingwen Wang
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Nina Gu
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaochuan Sun
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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14
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Geng Y, Lou J, Wu J, Tao Z, Yang N, Kuang J, Wu Y, Zhang J, Xiang L, Shi J, Cai Y, Wang X, Chen J, Xiao J, Zhou K. NEMO-Binding Domain/IKKγ Inhibitory Peptide Alleviates Neuronal Pyroptosis in Spinal Cord Injury by Inhibiting ASMase-Induced Lysosome Membrane Permeabilization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2405759. [PMID: 39225315 DOI: 10.1002/advs.202405759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/16/2024] [Indexed: 09/04/2024]
Abstract
A short peptide termed NEMO-binding domain (NBD) peptide has an inhibitory effect on nuclear factor kappa-B (NF-κB). Despite its efficacy in inhibiting inflammatory responses, the precise neuroprotective mechanisms of NBD peptide in spinal cord injury (SCI) remain unclear. This study aims to determine whether the pyroptosis-related aspects involved in the neuroprotective effects of NBD peptide post-SCI.Using RNA sequencing, the molecular mechanisms of NBD peptide in SCI are explored. The evaluation of functional recovery is performed using the Basso mouse scale, Nissl staining, footprint analysis, Masson's trichrome staining, and HE staining. Western blotting, enzyme-linked immunosorbent assays, and immunofluorescence assays are used to examine pyroptosis, autophagy, lysosomal membrane permeabilization (LMP), acid sphingomyelinase (ASMase), and the NF-κB/p38-MAPK related signaling pathway.NBD peptide mitigated glial scar formation, reduced motor neuron death, and enhanced functional recovery in SCI mice. Additionally, NBD peptide inhibits pyroptosis, ameliorate LMP-induced autophagy flux disorder in neuron post-SCI. Mechanistically, NBD peptide alleviates LMP and subsequently enhances autophagy by inhibiting ASMase through the NF-κB/p38-MAPK/Elk-1/Egr-1 signaling cascade, thereby mitigating neuronal death. NBD peptide contributes to functional restoration by suppressing ASMase-mediated LMP and autophagy depression, and inhibiting pyroptosis in neuron following SCI, which may have potential clinical application value.
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Affiliation(s)
- Yibo Geng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Junsheng Lou
- Department of Orthopedic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310003, China
| | - Junnan Wu
- Department of Pharmacy, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, 324000, China
| | - Zhichao Tao
- Renji College of Wenzhou Medical University, Wenzhou, 325027, China
| | - Ningning Yang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiaxuan Kuang
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
| | - Yuzhe Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiacheng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Linyi Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jingwei Shi
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
| | - Yuepiao Cai
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jiaoxiang Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
| | - Jian Xiao
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
- Molecular Pharmacology Research Center, School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou, 325027, China
- Cixi Biomedical Research Institute, Wenzhou Medical University, Ningbo, 315300, China
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15
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Jiang P, Li X, Shen Y, Luo L, Wu B, Teng D, Wang J, Muhammad I, Xu Q, Li S, Zhang B, Cai J. CircRNA-Phf21a_0002 promotes pyroptosis to aggravate hepatic ischemia/ reperfusion injury by sponging let-7b-5p. Heliyon 2024; 10:e34385. [PMID: 39262995 PMCID: PMC11389545 DOI: 10.1016/j.heliyon.2024.e34385] [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: 05/25/2023] [Revised: 06/24/2024] [Accepted: 07/09/2024] [Indexed: 09/13/2024] Open
Abstract
Hepatic ischemia‒reperfusion injury is a common injury in liver surgery and liver transplantation that can lead to liver function damage, including oxidative stress, apoptosis, autophagy and inflammatory reactions. Pyroptosis is a type of inflammatory programmed cell death that has been implicated in ischemia‒reperfusion injury-associated inflammatory reactions. Although circular RNAs can regulate cell death in hepatic ischemia‒reperfusion injury, their relationship with pyroptosis remains unclear. Therefore, this study aimed to investigate the effect of circular RNA on pyroptosis in hepatic ischemia‒reperfusion injury. We constructed a mouse hepatic ischemia‒reperfusion injury model for circular RNA sequencing and obtained 40 circular RNAs with significant differential expression, of which 39 were upregulated and 1 was downregulated. Subsequently, the endogenous competitive RNA network was constructed using TarBase, miRTarBase, TargetScan, RNAhybrid, and miRanda. Gene Set Enrichment Analysis, Kyoto Encyclopedia of Genes and Genomes and Gene Ontology functional analyses of downstream target genes revealed that circRNA-Phf21a_0002 might affect pyroptosis by regulating the mTOR signaling pathway and Bach1 by sponging let-7b-5p. The overexpression plasmid upregulated the expression of circRNA-Phf21a_0002 in a hypoxia/reoxygenation model, which aggravated pyroptosis in AML12 cells and apoptosis and necrosis of hepatocytes. Next, we investigated the underlying mechanism and found that circRNA-Phf21a_0002 enabled the expression of Bach1 through sponging of let-7b-5p. The aggravation of pyroptosis via overexpression of circRNA-Phf21a_0002 was reversed by let-7b-5p mimics in hypoxia/reoxygenation-subjected AML12 cells. Collectively, our study clarifies that circRNA-Phf21a_0002 aggravates the pyroptosis of hepatocytes related to ischemia-reperfusion by sponging let-7b-5p. These findings provide new molecular mechanisms and novel biomarkers for follow-up treatment.
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Affiliation(s)
- Peng Jiang
- The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xinqiang Li
- The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Yuntai Shen
- The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Lijian Luo
- Organ Transplant Center, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Bin Wu
- Organ Transplant Center, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Dahong Teng
- Organ Transplant Center, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Jinshan Wang
- Organ Transplant Center, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Imran Muhammad
- The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Qingguo Xu
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Shipeng Li
- Department of Hepatopancreaticobiliary Surgery, Henan Provincial People's Hospital, Zhengzhou University, Zhengzhou, China
| | - Bin Zhang
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Jinzhen Cai
- Organ Transplant Center, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
- The Institute of Transplantation Science, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
- Organ Transplantation Center, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
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16
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Chen LP, Gui XD, Tian WD, Kan HM, Huang JZ, Ji FH. Botulinum toxin type A-targeted SPP1 contributes to neuropathic pain by the activation of microglia pyroptosis. World J Psychiatry 2024; 14:1254-1266. [PMID: 39165552 PMCID: PMC11331382 DOI: 10.5498/wjp.v14.i8.1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/29/2024] [Accepted: 07/02/2024] [Indexed: 08/12/2024] Open
Abstract
BACKGROUND Neuropathic pain (NP) is the primary symptom of various neurological conditions. Patients with NP often experience mood disorders, particularly depression and anxiety, that can severely affect their normal lives. Microglial cells are associated with NP. Excessive inflammatory responses, especially the secretion of large amounts of pro-inflammatory cytokines, ultimately lead to neuroinflammation. Microglial pyroptosis is a newly discovered form of inflammatory cell death associated with immune responses and inflammation-related diseases of the central nervous system. AIM To investigate the effects of botulinum toxin type A (BTX-A) on microglial pyroptosis in terms of NP and associated mechanisms. METHODS Two models, an in vitro lipopolysaccharide (LPS)-stimulated microglial cell model and a selective nerve injury model using BTX-A and SPP1 knockdown treatments, were used. Key proteins in the pyroptosis signaling pathway, NLRP3-GSDMD, were assessed using western blotting, real-time quantitative polymerase chain reaction, and immunofluorescence. Inflammatory factors [interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α] were assessed using enzyme-linked immunosorbent assay. We also evaluated microglial cell proliferation and apoptosis. Furthermore, we measured pain sensation by assessing the delayed hind paw withdrawal latency using thermal stimulation. RESULTS The expression levels of ACS and GSDMD-N and the mRNA expression of TNF-α, IL-6, and IL-1β were enhanced in LPS-treated microglia. Furthermore, SPP1 expression was also induced in LPS-treated microglia. Notably, BTX-A inhibited SPP1 mRNA and protein expression in the LPS-treated microglia. Additionally, depletion of SPP1 or BTX-A inhibited cell viability and induced apoptosis in LPS-treated microglia, whereas co-treatment with BTX-A enhanced the effect of SPP1 short hairpin (sh)RNA in LPS-treated microglia. Finally, SPP1 depletion or BTX-A treatment reduced the levels of GSDMD-N, NLPRP3, and ASC and suppressed the production of inflammatory factors. CONCLUSION Notably, BTX-A therapy and SPP1 shRNA enhance microglial proliferation and apoptosis and inhibit microglial death. It improves pain perception and inhibits microglial activation in rats with selective nerve pain.
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Affiliation(s)
- Li-Ping Chen
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
| | - Xiao-Die Gui
- Department of Pain, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
| | - Wen-Di Tian
- Department of Pain, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
| | - Hou-Ming Kan
- Faculty of Medicine, Macao University of Science and Technology, Macau 999078, China
| | - Jin-Zhao Huang
- Department of Pain, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
| | - Fu-Hai Ji
- Department of Anesthesiology, The First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
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He W, Xu J, Wang X, Fan Z, Li H. Macrophage-derived exosomal miR-155 regulating hepatocyte pyroptosis in MAFLD. Heliyon 2024; 10:e35197. [PMID: 39157367 PMCID: PMC11328038 DOI: 10.1016/j.heliyon.2024.e35197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 08/20/2024] Open
Abstract
Background Previous studies have shown that pyroptosis in hepatocyte is essential for the development of MAFLD. Growing evidence has shown that exosomal miRNAs-mediated communication between inflammatory cells and hepatocyte is an important link in MAFLD. In the present study, we aim to elucidate whether macrophage-derived exosomal miRNAs contribute to the hepatocyte pyroptosis in the pathophysiological process of MAFLD. Methods The effects of hepatocyte pyroptosis were investigated in an HFD-induced MAFLD mouse model and in the liver tissues from patients with MAFLD using immunohistochemistry, real-time PCR, Western blotting, and luciferase reporter assay, among other techniques. MiR-155 inhibitor tail injections and AAV-FoxO3a-GFP were also administered to respectively inhibit or overexpress its expression in an HFD-induced MAFLD mouse model. Results Hepatocyte pyroptosis was heightened in the liver tissue of patients with MAFLD or HFD-induced MAFLD mouse. Importantly, treatment with a caspase-1 inhibitor or overexpression of FoxO3a reversed this trend. Our study also demonstrated that miR-155 expression and the number of infiltrated macrophages were increased, and knockdown of miR-155 attenuated hepotocyte pyroptosis and liver fibrosis in HFD-induced mouse. In addition, we demonstrated that macrophage-derived exosomal miR-155 was transferred to hepatocytes, leading to hepatocyte pyroptosis in MAFLD mouse. Furthermore, blockade of exosome secretion improved hepotocyte pyroptosis and liver fibrosis in HFD-induced mouse. On the contrary, macrophage-derived exosomal miR-155 worsened hepotocyte pyroptosis. Moreover, we found that miR-155 promoted hepatocyte pyroptosis in MAFLD by down-regulating FoxO3a. Conclusions Taken together, our results demonstrated that macrophage-derived exosomal miR-155 promotes hepatocyte pyroptosis and liver fibrosis in MAFLD.
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Affiliation(s)
- Wei He
- Corresponding author. Department of Gastroenterology, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Geriatric Institute, Jiangsu Province Official Hospital, Nanjing, 210024, Jiangsu Province, China.
| | | | - Xiang Wang
- Department of Gastroenterology, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Geriatric Institute, Jiangsu Province Official Hospital, Nanjing, 210024, Jiangsu Province, China
| | - Zhining Fan
- Department of Gastroenterology, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Geriatric Institute, Jiangsu Province Official Hospital, Nanjing, 210024, Jiangsu Province, China
| | - Hai Li
- Department of Gastroenterology, Geriatric Hospital of Nanjing Medical University, Jiangsu Province Geriatric Institute, Jiangsu Province Official Hospital, Nanjing, 210024, Jiangsu Province, China
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Xiao CL, Lai HT, Zhou JJ, Liu WY, Zhao M, Zhao K. Nrf2 Signaling Pathway: Focus on Oxidative Stress in Spinal Cord Injury. Mol Neurobiol 2024:10.1007/s12035-024-04394-z. [PMID: 39093381 DOI: 10.1007/s12035-024-04394-z] [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: 12/11/2023] [Accepted: 07/22/2024] [Indexed: 08/04/2024]
Abstract
Spinal cord injury (SCI) is a serious, disabling injury to the central nervous system that can lead to motor, sensory, and autonomic dysfunction below the injury plane. SCI can be divided into primary injury and secondary injury according to its pathophysiological process. Primary injury is irreversible in most cases, while secondary injury is a dynamic regulatory process. Secondary injury involves a series of pathological events, such as ischemia, oxidative stress, inflammatory events, apoptotic pathways, and motor dysfunction. Among them, oxidative stress is an important pathological event of secondary injury. Oxidative stress causes a series of destructive events such as lipid peroxidation, DNA damage, inflammation, and cell death, which further worsens the microenvironment of the injured site and leads to neurological dysfunction. The nuclear factor erythrocyte 2-associated factor 2 (Nrf2) is considered to be a key pathway of antioxidative stress and is closely related to the pathological process of SCI. Activation of this pathway can effectively inhibit the oxidative stress process and promote the recovery of nerve function after SCI. Therefore, the Nrf2 pathway may be a potential therapeutic target for SCI. This review deeply analyzed the generation of oxidative stress in SCI, the role and mechanism of Nrf2 as the main regulator of antioxidant stress in SCI, and the influence of cross-talk between Nrf2 and related pathways that may be involved in the pathological regulation of SCI on oxidative stress, and summarized the drugs and other treatment methods based on Nrf2 pathway regulation. The objective of this paper is to provide evidence for the role of Nrf2 activation in SCI and to highlight the important role of Nrf2 in alleviating SCI by elucidating the mechanism, so as to provide a theoretical basis for targeting Nrf2 pathway as a therapy for SCI.
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Affiliation(s)
- Chun-Lin Xiao
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Hong-Tong Lai
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Jiang-Jun Zhou
- Hospital 908, Joint Logistics Support Force, 1028 Jinggangshan Avenue, Qingyunpu District, Nanchang City, Jiangxi Province, 330001, People's Republic of China
| | - Wu-Yang Liu
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China
| | - Min Zhao
- Department of Spine Surgery, Yingtan People's Hospital, 116 Shengli West Road, Yuehu District, Yingtan City, Jiangxi Province, 335000, People's Republic of China.
| | - Kai Zhao
- Gannan Medical University, 1 Harmony Avenue, Rongjiang New District, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
- Department of Orthopaedics, Frist Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province, 341000, People's Republic of China.
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Shen Y, Gong X, Qian L, Ruan Y, Lin S, Yu Z, Si Z, Wei W, Liu Y. Inhibition of GSDMD-dependent pyroptosis decreased methamphetamine self-administration in rats. Brain Behav Immun 2024; 120:167-180. [PMID: 38834156 DOI: 10.1016/j.bbi.2024.05.040] [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: 12/15/2023] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/06/2024] Open
Abstract
It is widely believed that the activation of the central dopamine (DA) system is crucial to the rewarding effects of methamphetamine (METH) and to the behavioral outcomes of METH use disorder. It was reported that METH exposure induced gasdermin D (GSDMD)-dependent pyroptosis in rats. The membrane pore formation caused by METH-induced pyroptosis may also contribute to the overflow of DA into the extracellular space and subsequently increase the DA levels in the brain. The present study firstly investigated whether the membrane pore information induced by GSDMD-dependent pyroptosis was associated with the increased DA levels in the ventral tegmental area (VAT) and nucleus accumbens (NAc) of rats self-administering METH and SY-SH5Y cells treated by METH. Subsequently, the effect of pore formation blockade or genetic inhibition of GSDMD on the reinforcing and motivational effect of METH was determined in rats, using the animal model of METH self-administration (SA). METH exposure significantly increased the activity of NLRP1/Cas-1/GSDMD pathway and the presence of pyroptosis, accompanied by the significantly increased DA levels in VTA and NAc. Moreover, intraperitoneal injections of disulfiram (DSF) or microinjection of rAAV-shGSDMD into VTA/NAc significantly reduced the reinforcing and motivational effect of METH, accompanied by the decreased level of DA in VTA and NAc. The results provided novel evidence that METH-induced pyroptosis could increase DA release in VTA and NAc via the NLRP1/Cas-1/GSDMD pathway. Additionally, membrane pores or GSDMD blockade could significantly reduce the reinforcing and motivational effect of METH. In conclusion, blocking GSDMD and membrane pore formation could be a promising potential target for the development of agents to treat METH use disorder.
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Affiliation(s)
- Yao Shen
- School of Public Health, Health Science Center, Ningbo University, Ningbo, 315021, China
| | - Xinshuang Gong
- School of Public Health, Health Science Center, Ningbo University, Ningbo, 315021, China
| | - Liyin Qian
- School of Public Health, Health Science Center, Ningbo University, Ningbo, 315021, China
| | - Yuer Ruan
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Shujun Lin
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Zhaoying Yu
- Department of Psychology, Collage of Teacher Education, Ningbo University, Ningbo, China
| | - Zizhen Si
- School of Pharmacy, Health Science Center, Ningbo University, Ningbo 315211, China
| | - Wenting Wei
- School of Materials Science and Chenical Engineering, Ningbo University, Ningbo 315211, China
| | - Yu Liu
- School of Pharmacy, Health Science Center, Ningbo University, Ningbo 315211, China.
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20
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Xu A, Huang F, Chen E, Zhang Z, He Y, Yu X, He G. Hyperbaric oxygen therapy attenuates heatstroke-induced hippocampal injury by inhibiting microglial pyroptosis. Int J Hyperthermia 2024; 41:2382162. [PMID: 39043380 DOI: 10.1080/02656736.2024.2382162] [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: 04/24/2024] [Accepted: 07/15/2024] [Indexed: 07/25/2024] Open
Abstract
Background: Central nervous system (CNS) injury is the most prominent feature of heatstroke and the hippocampus is prone to damage. However, the mechanisms underlying the heatstroke-induced hippocampal injury remain unclear. Hyperbaric oxygen (HBO) therapy prevents CNS injury in heatstroke mice. However, the underlying mechanisms of HBO in heatstroke-induced hippocampal injury remain unclear. This study aimed to elucidate the protective effects of HBO against hippocampal injury and its potential role in microglial pyroptosis in heatstroke rats.Methods: A rat heatstroke model and a heat stress model with a mouse microglial cell line (BV2) were, respectively, used to illustrate the effect of HBO on heat-induced microglial pyroptosis in vivo and in vitro. We used a combination of molecular and histological methods to assess microglial pyroptosis and neuroinflammation both in vivo and in vitro.Results: The results revealed that HBO improved heatstroke-induced survival outcomes, hippocampal injury, and neurological dysfunction in rats. In addition, HBO mitigates microglial pyroptosis and reduces the expression of pro-inflammatory cytokines in the hippocampus of heatstroke rats. In vitro experiments showed that HBO attenuated BV2 cell injury under heat stress. Furthermore, HBO prevented heat-induced pyroptosis of BV2 cells, and the expression of pro-inflammatory cytokines IL-18 and IL-1β was reduced. Mechanistically, HBO alleviates heatstroke-induced neuroinflammation and hippocampal injury by preventing microglial pyroptosis. Conclusions: In conclusion, HBO attenuates heatstroke-induced neuroinflammation and hippocampal injury by inhibiting microglial pyroptosis.
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Affiliation(s)
- Ancong Xu
- Department of Intensive Care Unit, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Fan Huang
- Wenzhou Medical University, Wenzhou, China
| | - Er Chen
- Department of Intensive Care Unit, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | | | - Yanxuan He
- Wenzhou Medical University, Wenzhou, China
| | - Xichong Yu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Guoxin He
- Department of Intensive Care Unit, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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Liao Q, Yang Y, Li Y, Zhang J, Fan K, Guo Y, Chen J, Chen Y, Zhu P, Huang L, Liu Z. Targeting TANK-binding kinase 1 attenuates painful diabetic neuropathy via inhibiting microglia pyroptosis. Cell Commun Signal 2024; 22:368. [PMID: 39030571 PMCID: PMC11264750 DOI: 10.1186/s12964-024-01723-6] [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: 02/23/2024] [Accepted: 06/22/2024] [Indexed: 07/21/2024] Open
Abstract
BACKGROUND Painful diabetic neuropathy (PDN) is closely linked to inflammation, which has been demonstrated to be associated with pyroptosis. Emerging evidence has implicated TANK-binding kinase 1 (TBK1) in various inflammatory diseases. However, it remains unknown whether activated TBK1 causes hyperalgesia via pyroptosis. METHODS PDN mice model of type 1 or type 2 diabetic was induced by C57BL/6J or BKS-DB mice with Lepr gene mutation. For type 2 diabetes PDN model, TBK1-siRNA, Caspase-1 inhibitor Ac-YVAD-cmk or TBK1 inhibitor amlexanox (AMX) were delivered by intrathecal injection or intragastric administration. The pain threshold and plantar skin blood perfusion were evaluated through animal experiments. The assessments of spinal cord, dorsal root ganglion, sciatic nerve, plantar skin and serum included western blotting, immunofluorescence, ELISA, and transmission electron microscopy. RESULTS In the PDN mouse model, we found that TBK1 was significantly activated in the spinal dorsal horn (SDH) and mainly located in microglia, and intrathecal injection of chemically modified TBK1-siRNA could improve hyperalgesia. Herein, we described the mechanism that TBK1 could activate the noncanonical nuclear factor κB (NF-κB) pathway, mediate the activation of NLRP3 inflammasome, trigger microglia pyroptosis, and ultimately induce PDN, which could be reversed following TBK1-siRNA injection. We also found that systemic administration of AMX, a TBK1 inhibitor, could effectively improve peripheral nerve injury. These results revealed the key role of TBK1 in PDN and that TBK1 inhibitor AMX could be a potential strategy for treating PDN. CONCLUSIONS Our findings revealed a novel causal role of TBK1 in pathogenesis of PDN, which raises the possibility of applying amlexanox to selectively target TBK1 as a potential therapeutic strategy for PDN.
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Affiliation(s)
- Qinming Liao
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Yimei Yang
- Department of Neurosurgery, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510030, Guangdong, China
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Yilu Li
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Jun Zhang
- Department of Neurosurgery, Dalang Hospital, Dongguan, 523775, Guangdong, China
| | - Keke Fan
- Department of Anesthesiology, Shenzhen Children's Hospital, Shenzhen, 518000, Guangdong, China
| | - Yihao Guo
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, 510220, Guangdong, China
| | - Jun Chen
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Yinhao Chen
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China
| | - Pian Zhu
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, 510220, Guangdong, China
- Department of Anesthesiology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, 200032, China
| | - Lijin Huang
- Department of Neurosurgery, Guangdong Provincial Hospital of Chinese Medicine, Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou, 510030, Guangdong, China.
- Department of Neurosurgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, 510630, Guangdong, China.
| | - Zhongjie Liu
- Department of Anesthesiology, Shenzhen Children's Hospital, Shenzhen, 518000, Guangdong, China.
- Department of Anesthesiology, Zhujiang Hospital of Southern Medical University, Guangzhou, 510220, Guangdong, China.
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Liu J, Kong G, Lu C, Wang J, Li W, Lv Z, Tong J, Liu Y, Xiong W, Li H, Fan J. IPSC-NSCs-derived exosomal let-7b-5p improves motor function after spinal cord Injury by modulating microglial/macrophage pyroptosis. J Nanobiotechnology 2024; 22:403. [PMID: 38982427 PMCID: PMC11232148 DOI: 10.1186/s12951-024-02697-w] [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: 02/14/2024] [Accepted: 07/03/2024] [Indexed: 07/11/2024] Open
Abstract
BACKGROUND Following spinal cord injury (SCI), the inflammatory storm initiated by microglia/macrophages poses a significant impediment to the recovery process. Exosomes play a crucial role in the transport of miRNAs, facilitating essential cellular communication through the transfer of genetic material. However, the miRNAs from iPSC-NSCs-Exos and their potential mechanisms leading to repair after SCI remain unclear. This study aims to explore the role of iPSC-NSCs-Exos in microglia/macrophage pyroptosis and reveal their potential mechanisms. METHODS iPSC-NSCs-Exos were characterized and identified using transmission electron microscopy (TEM), nanoparticle tracking analysis (NTA), and Western blot. A mouse SCI model and a series of in vivo and in vitro experiments were conducted to investigate the therapeutic effects of iPSC-NSCs-Exos. Subsequently, miRNA microarray analysis and rescue experiments were performed to confirm the role of miRNAs in iPSC-NSCs-Exos in SCI. Mechanistic studies were carried out using Western blot, luciferase activity assays, and RNA-ChIP. RESULTS Our findings revealed that iPSC-NSCs-derived exosomes inhibited microglia/macrophage pyroptosis at 7 days post-SCI, maintaining myelin integrity and promoting axonal growth, ultimately improving mice motor function. The miRNA microarray showed let-7b-5p to be highly enriched in iPSC-NSCs-Exos, and LRIG3 was identified as the target gene of let-7b-5p. Through a series of rescue experiments, we uncovered the connection between iPSC-NSCs and microglia/macrophages, revealing a novel target for treating SCI. CONCLUSION In conclusion, we discovered that iPSC-NSCs-derived exosomes can package and deliver let-7b-5p, regulating the expression of LRIG3 to ameliorate microglia/macrophage pyroptosis and enhance motor function in mice after SCI. This highlights the potential of combined therapy with iPSC-NSCs-Exos and let-7b-5p in promoting functional recovery and limiting inflammation following SCI.
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Affiliation(s)
- Jie Liu
- Department of Orthopaedics, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, China
| | - Guang Kong
- Department of Orthopaedics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chenlin Lu
- Department of Clinical Research Center, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China
| | - Juan Wang
- Department of human anatomy, School of Basic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wenbo Li
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, China
| | - Zhengming Lv
- Department of Orthopaedics, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China
| | - Jian Tong
- Department of Orthopaedics, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China
| | - Yuan Liu
- Songjiang Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wu Xiong
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, China.
| | - Haijun Li
- Department of Orthopaedics, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China.
| | - Jin Fan
- Department of Orthopaedics, Taizhou School of Clinical Medicine, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Nanjing Medical University, 366 Taihu Road, Taizhou, Jiangsu, China.
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, Jiangsu, China.
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Liu R, Jiang L, Chen Y, Shao J, Chen K, Li X, Lv J, Cai W, Cai H, Zhu Z, Wang C, Zhou K, Huang J, Xiao J, Ni W, Wu C. Ginsenoside-Rh2 Promotes Functional Recovery after Spinal Cord Injury by Enhancing TFEB-Mediated Autophagy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14727-14746. [PMID: 38907713 DOI: 10.1021/acs.jafc.4c02379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
Background: Following spinal cord injury (SCI), autophagy plays a positive role in neuronal protection, whereas pyroptosis triggers an inflammatory response. Ginsenoside-Rh2 (GRh2), known for its neuroprotective effects, is considered a promising drug. However, the exact molecular mechanisms underlying these protective effects remain unclear. Aim of the Study: Explore the therapeutic value of GRh2 in SCI and its potential mechanisms of action. Materials and Methods: An SCI mouse model was established, followed by random grouping and drug treatments under different conditions. Subsequently, the functional recovery of SCI mice after GRh2 treatment was assessed using hematoxylin and eosin, Masson's trichrome, and Nissl staining, footprint analysis, Basso Mouse Scale scoring, and inclined plane tests. The expression levels of relevant indicators in the mice were detected using Western blotting, immunofluorescence, and a quantitative polymerase chain reaction. Network pharmacology analysis was used to identify the relevant signaling pathways through which GRh2 exerts its therapeutic effects. Results: GRh2 promoted functional recovery after SCI. GRh2 significantly inhibits pyroptosis by enhancing autophagy in SCI mice. Simultaneously, the neuroprotective effect of GRh2, achieved through the inhibition of pyroptosis, is partially reversed by 3-methyladenine, an autophagy inhibitor. Additionally, the increase in autophagy induced by GRh2 is mediated by the promotion of transcription factor EB (TFEB) nuclear translocation and dephosphorylation. Partial attenuation of the protective effects of GRh2 was observed after TFEB knockdown. Additionally, GRh2 can modulate the activity of TFEB in mice post-SCI through the EGFR-MAPK signaling pathway, and NSC228155 (an EGFR activator) can partially reverse the effect of GRh2 on the EGFR-MAPK signaling pathway. Conclusions: GRh2 improves functional recovery after SCI by upregulating TFEB-mediated autophagic flux and inhibiting pyroptosis, indicating its potential clinical applicability.
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Affiliation(s)
- Rongjie Liu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Liting Jiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Yituo Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jiaqin Shao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Kongbin Chen
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Xiang Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Junlei Lv
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Wanta Cai
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Haoxu Cai
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Zhefan Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Chenggui Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jinfeng Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Jian Xiao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Wenfei Ni
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
| | - Chenyu Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
- Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
- The Second Clinical Medical College of Wenzhou Medical University, Wenzhou 325027, China
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China
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Ding Y, Chen Q. Recent advances on signaling pathways and their inhibitors in spinal cord injury. Biomed Pharmacother 2024; 176:116938. [PMID: 38878684 DOI: 10.1016/j.biopha.2024.116938] [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: 04/12/2024] [Revised: 05/27/2024] [Accepted: 06/10/2024] [Indexed: 06/20/2024] Open
Abstract
Spinal cord injury (SCI) is a serious and disabling central nervous system injury. Its complex pathological mechanism can lead to sensory and motor dysfunction. It has been reported that signaling pathway plays a key role in the pathological process and neuronal recovery mechanism of SCI. Such as PI3K/Akt, MAPK, NF-κB, and Wnt/β-catenin signaling pathways. According to reports, various stimuli and cytokines activate these signaling pathways related to SCI pathology, thereby participating in the regulation of pathological processes such as inflammation response, cell apoptosis, oxidative stress, and glial scar formation after injury. Activation or inhibition of relevant pathways can delay inflammatory response, reduce neuronal apoptosis, prevent glial scar formation, improve the microenvironment after SCI, and promote neural function recovery. Based on the role of signaling pathways in SCI, they may be potential targets for the treatment of SCI. Therefore, understanding the signaling pathway and its inhibitors may be beneficial to the development of SCI therapeutic targets and new drugs. This paper mainly summarizes the pathophysiological process of SCI, the signaling pathways involved in SCI pathogenesis, and the potential role of specific inhibitors/activators in its treatment. In addition, this review also discusses the deficiencies and defects of signaling pathways in SCI research. It is hoped that this study can provide reference for future research on signaling pathways in the pathogenesis of SCI and provide theoretical basis for SCI biotherapy.
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Affiliation(s)
- Yi Ding
- Department of Spine Surgery, Ganzhou People's Hospital,16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China; Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University),16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China
| | - Qin Chen
- Department of Spine Surgery, Ganzhou People's Hospital,16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China; Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University),16 Meiguan Avenue, Ganzhou, Jiangxi Province 341000, PR China.
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He W, Li ZQ, Gu HY, Pan QL, Lin FX. Targeted Therapy of Spinal Cord Injury: Inhibition of Apoptosis Is a Promising Therapeutic Strategy. Mol Neurobiol 2024; 61:4222-4239. [PMID: 38066400 DOI: 10.1007/s12035-023-03814-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/16/2023] [Indexed: 07/11/2024]
Abstract
Spinal cord injury (SCI) is a serious disabling central nervous system injury that can lead to motor, sensory, and autonomic dysfunction below the injury level. SCI can be divided into primary injury and secondary injury according to pathological process. Primary injury is mostly irreversible, while secondary injury is a dynamic regulatory process. Apoptosis is an important pathological event of secondary injury and has a significant effect on the recovery of nerve function after SCI. Nerve cell death can further aggravate the microenvironment of the injured site, leading to neurological dysfunction and thus affect the clinical outcome of patients. Therefore, apoptosis plays a crucial role in the pathological progression of secondary SCI, while inhibiting apoptosis may be a promising therapeutic strategy for SCI. This review will summarize and explore the factors that lead to cell death after SCI, the influence of cross talk between signaling pathways and pathways involved in apoptosis and discuss the influence of apoptosis on SCI, and the therapeutic significance of targeting apoptosis on SCI. This review helps us to understand the role of apoptosis in secondary SCI and provides a theoretical basis for the treatment of SCI based on apoptosis.
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Affiliation(s)
- Wei He
- Department of Spine Surgery, Ganzhou People's Hospital, Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
| | - Zhi-Qiang Li
- Department of Spine Surgery, Ganzhou People's Hospital, Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
| | - Hou-Yun Gu
- Department of Spine Surgery, Ganzhou People's Hospital, Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
| | - Qi-Lin Pan
- Department of Spine Surgery, Ganzhou People's Hospital, Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China
| | - Fei-Xiang Lin
- Department of Spine Surgery, Ganzhou People's Hospital, Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China.
- Department of Spine Surgery, The Affiliated Ganzhou Hospital of Nanchang University (Ganzhou Hospital-Nanfang Hospital, Southern Medical University), Jiangxi Province, 16 Meiguan Avenue, Ganzhou, 341000, People's Republic of China.
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Wang Z, Luo W, Zhang G, Li H, Zhou F, Wang D, Feng X, Xiong Y, Wu Y. FoxO1 knockdown inhibits RANKL-induced osteoclastogenesis by blocking NLRP3 inflammasome activation. Oral Dis 2024; 30:3272-3285. [PMID: 37927112 DOI: 10.1111/odi.14800] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVES This study aimed to elucidate the connection between osteoclastic forkhead transcription factor O1 (FoxO1) and periodontitis and explore the underlying mechanism by which FoxO1 knockdown regulates osteoclast formation. MATERIALS AND METHODS A conventional ligature-induced periodontitis model was constructed to reveal the alterations in the proportion of osteoclastic FoxO1 in periodontitis via immunofluorescence staining. Additionally, RNA sequencing (RNA-seq) was performed to explore the underlying mechanisms of FoxO1 knockdown-mediated osteoclastogenesis, followed by western blotting, quantitative polymerase chain reaction, and enzyme-linked immunosorbent assay. RESULTS FoxO1+ osteoclasts were enriched in the alveolar bone in experimental periodontitis. Moreover, FoxO1 knockdown led to impaired osteoclastogenesis with low expression of osteoclast differentiation-related genes, accompanied by an insufficient osteoclast maturation phenotype. Mechanistically, RNA-seq revealed that the nuclear factor kappa B (NF-κB) and nucleotide-binding oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3) inflammasome signaling pathways were inhibited in FoxO1-knockdown osteoclasts. Consistent with this, MCC950, an effective inhibitor of the NLRP3 inflammasome, substantially attenuated osteoclast formation. CONCLUSIONS FoxO1 knockdown contributed to the inhibition of osteoclastogenesis by effectively suppressing NF-κB signaling and NLRP3 inflammasome activation. This prospective study reveals the role of FoxO1 in mediating osteoclastogenesis and provides a viable therapeutic target for periodontitis treatment.
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Affiliation(s)
- Zhanqi Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Wenxin Luo
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Guorui Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Haiyun Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Feng Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dongyang Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xuan Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yi Xiong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yingying Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Liu FS, Huang HL, Deng LX, Zhang QS, Wang XB, Li J, Liu FB. Identification and bioinformatics analysis of genes associated with pyroptosis in spinal cord injury of rat and mouse. Sci Rep 2024; 14:14023. [PMID: 38890348 PMCID: PMC11189416 DOI: 10.1038/s41598-024-64843-6] [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: 08/28/2023] [Accepted: 06/13/2024] [Indexed: 06/20/2024] Open
Abstract
The mechanism of spinal cord injury (SCI) is highly complex, and an increasing number of studies have indicated the involvement of pyroptosis in the physiological and pathological processes of secondary SCI. However, there is limited bioinformatics research on pyroptosis-related genes (PRGs) in SCI. This study aims to identify and validate differentially expressed PRGs in the GEO database, perform bioinformatics analysis, and construct regulatory networks to explore potential regulatory mechanisms and therapeutic targets for SCI. We obtained high-throughput sequencing datasets of SCI in rats and mice from the GEO database. Differential analysis was conducted using the "limma" package in R to identify differentially expressed genes (DEGs). These genes were then intersected with previously reported PRGs, resulting in a set of PRGs in SCI. GO and KEGG enrichment analyses, as well as correlation analysis, were performed on the PRGs in both rat and mouse models of SCI. Additionally, a protein-protein interaction (PPI) network was constructed using the STRING website to examine the relationships between proteins. Hub genes were identified using Cytoscape software, and the intersection of the top 5 hub genes in rats and mice were selected for subsequent experimentally validated. Furthermore, a competing endogenous RNA (ceRNA) network was constructed to explore potential regulatory mechanisms. The gene expression profiles of GSE93249, GSE133093, GSE138637, GSE174549, GSE45376, GSE171441_3d and GSE171441_35d were selected in this study. We identified 10 and 12 PRGs in rats and mice datasets respectively. Six common DEGs were identified in the intersection of rats and mice PRGs. Enrichment analysis of these DEGs indicated that GO analysis was mainly focused on inflammation-related factors, while KEGG analysis showed that the most genes were enriched on the NOD-like receptor signaling pathway. We constructed a ceRNA regulatory network that consisted of five important PRGs, as well as 24 miRNAs and 34 lncRNAs. This network revealed potential regulatory mechanisms. Additionally, the three hub genes obtained from the intersection were validated in the rat model, showing high expression of PRGs in SCI. Pyroptosis is involved in secondary SCI and may play a significant role in its pathogenesis. The regulatory mechanisms associated with pyroptosis deserve further in-depth research.
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Affiliation(s)
- Fu-Sheng Liu
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Hai-Long Huang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Lin-Xia Deng
- Department of Pediatrics, The Third Xiangya Hospital, Central South University, Changsha, 410011, China
| | - Qian-Shi Zhang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Xiao-Bin Wang
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Jing Li
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, 410011, Hunan, China
| | - Fu-Bing Liu
- Department of Spine Surgery, The Second Xiangya Hospital, Central South University, 139 Renmin Middle Road, Changsha, 410011, Hunan, China.
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Lou Y, Li Z, Zheng H, Yuan Z, Li W, Zhang J, Shen W, Gao Y, Ran N, Kong X, Feng S. New strategy to treat spinal cord injury: Nafamostat mesilate suppressed NLRP3-mediated pyroptosis during acute phase. Int Immunopharmacol 2024; 134:112190. [PMID: 38703569 DOI: 10.1016/j.intimp.2024.112190] [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] [Revised: 04/19/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024]
Abstract
Spinal cord injury (SCI) is a devastating condition for which effective clinical treatment is currently lacking. During the acute phase of SCI, myriad pathological changes give rise to subsequent secondary injury. The results of our previous studies indicated that treating rats post-SCI with nafamostat mesilate (NM) protected the blood-spinal cord barrier (BSCB) and exerted an antiapoptotic effect. However, the optimal dosage for mice with SCI and the underlying mechanisms potentially contributing to recovery, especially during the acute phase of SCI, have not been determined. In this study, we first determined the optimal dosage of NM for mice post-SCI (5 mg/kg/day). Subsequently, our RNA-seq findings revealed that NM has the potential to inhibit pyroptosis after SCI. These findings were further substantiated by subsequent Western blot (WB) and Immunofluorescence (IF) analyses in vivo. These results indicate that NM can alleviate NLRP3 (NOD-like receptor thermal protein domain associated protein 3)-mediated pyroptosis by modulating the NF-κB signaling pathway and reducing the protein expression levels of NIMA-related kinase 7 (NEK7) and cathepsin B (CTSB). In vitro experimental results supported our in vivo findings, revealing the effectiveness of NM in suppressing pyroptosis induced by adenosine triphosphate (ATP) and lipopolysaccharide (LPS) in BV2 cells. These results underscore the potential of NM to regulate NLRP3-mediated pyroptosis following SCI. Notably, compared with other synthetic compounds, NM exhibits greater versatility, suggesting that it is a promising clinical treatment option for SCI.
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Affiliation(s)
- Yongfu Lou
- Department of Orthopedics, The Second Hospital, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China
| | - Zonghao Li
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China
| | - Han Zheng
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China
| | - Zhongze Yuan
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China
| | - Wenxiang Li
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China
| | - Jianping Zhang
- Division of Surgery and Interventional Science, University College London, London HA7 4LP, United Kingdom
| | - Wenyuan Shen
- Department of Orthopedics, The Second Hospital, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China
| | - Yiming Gao
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China
| | - Ning Ran
- Department of Orthopedics, The Second Hospital, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China.
| | - Xiaohong Kong
- Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China.
| | - Shiqing Feng
- Department of Orthopedics, The Second Hospital, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong University Centre for Orthopaedics, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Orthopaedics, Qilu Hospital of Shandong University, Shandong University, Shandong, China.
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Tong YX, Zhu SY, Wang ZY, Zhao YX, Saleem MAU, Malh KK, Li XN, Li JL. Sulforaphane Ameliorate Cadmium-Induced Blood-Thymus Barrier Disruption by Targeting the PI3K/AKT/FOXO1 Axis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13382-13392. [PMID: 38814005 DOI: 10.1021/acs.jafc.4c01703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
Cadmium (Cd) is a transition metal ion that is extremely harmful to human and animal biological systems. Cd is a toxic substance that can accumulate in the food chain and cause various health issues. Sulforaphane (SFN) is a natural bioactive compound with potent antioxidant properties. In our study, 80 1 day-old chicks were fed with Cd (140 mg/kg BW/day) and/or SFN (50 mg/kg BW/day) for 90 days. The blood-thymus barrier (BTB) is a selective barrier separating T-lymphocytes from blood and cortical capillaries in the thymus cortex. Our research revealed that Cd could destroy the BTB by downregulating Wnt/β-catenin signaling and induce immunodeficiency, leading to irreversible injury to the immune system. The study emphasizes the health benefits of SFN in the thymus. SFN could ameliorate Cd-triggered BTB dysfunction and pyroptosis in the thymus tissues. SFN modulated the PI3K/AKT/FOXO1 axis, improving the level of claudin-5 (CLDN5) in the thymus to alleviate BTB breakdown. Our findings indicated the toxic impact of Cd on thymus, and BTB could be the specific target of Cd toxicity. The finding also provides evidence for the role of SFN in maintaining thymic homeostasis for Cd-related health issues.
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Affiliation(s)
- Yu-Xuan Tong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Shi-Yong Zhu
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhao-Yi Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Ying-Xin Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | | | - Kanwar Kumar Malh
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Xue-Nan Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
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30
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Yu W, Zhang Y, Sun L, Huang W, Li X, Xia N, Chen X, Wikana LP, Xiao Y, Chen M, Han S, Wang Z, Pu L. Myeloid Trem2 ameliorates the progression of metabolic dysfunction-associated steatotic liver disease by regulating macrophage pyroptosis and inflammation resolution. Metabolism 2024; 155:155911. [PMID: 38609037 DOI: 10.1016/j.metabol.2024.155911] [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: 12/21/2023] [Revised: 04/06/2024] [Accepted: 04/07/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND The prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD) is increasing year by year and has become one of the leading causes of end-stage liver disease worldwide. Triggering Receptor Expressed on Myeloid Cells 2 (Trem2) has been confirmed to play an essential role in the progression of MASLD, but its specific mechanism still needs to be clarified. This study aims to explore the role and mechanism of Trem2 in MASLD. METHODS Human liver tissues were obtained from patients with MASLD and controls. Myeloid-specific knockout mice (Trem2mKO) and myeloid-specific overexpression mice (Trem2TdT) were fed a high-fat diet, either AMLN or CDAHFD, to establish the MASLD model. Relevant signaling molecules were assessed through lipidomics and RNA-seq analyses after that. RESULTS Trem2 is upregulated in human MASLD/MASH-associated macrophages and is associated with hepatic steatosis and inflammation progression. Hepatic steatosis and inflammatory responses are exacerbated with the knockout of myeloid Trem2 in MASLD mice, while mice overexpressing Trem2 exhibit the opposite phenomenon. Mechanistically, Trem2mKO can aggravate macrophage pyroptosis through the PI3K/AKT signaling pathway and amplify the resulting inflammatory response. At the same time, Trem2 promotes the inflammation resolution phenotype transformation of macrophages through TGFβ1, thereby promoting tissue repair. CONCLUSIONS Myeloid Trem2 ameliorates the progression of Metabolic dysfunction-associated steatotic liver disease by regulating macrophage pyroptosis and inflammation resolution. We believe targeting myeloid Trem2 could represent a potential avenue for treating MASLD.
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Affiliation(s)
- Wenjie Yu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Yu Zhang
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Linfeng Sun
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Wei Huang
- Department of General Surgery, The Friendship Hospital of Ili Kazakh Autonomous Prefecture, Ili & Jiangsu Joint Institute of Health, Ili, China
| | - Xiangdong Li
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Nan Xia
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Xuejiao Chen
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Likalamu Pascalia Wikana
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Yuhao Xiao
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Minhao Chen
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Sheng Han
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Ziyi Wang
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China
| | - Liyong Pu
- Hepatobiliary Center, The First Affiliated Hospital of Nanjing Medical University; Key Laboratory of Liver Transplantation, Chinese Academy of Medical Sciences; NHC Key Laboratory of Hepatobiliary cancers, Nanjing 210029, Jiangsu Province, China.
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31
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Ricci A, Zara S, Carta F, Di Valerio V, Sancilio S, Cataldi A, Selleri S, Supuran CT, Carradori S, Gallorini M. 2-Substituted-4,7-dihydro-4-ethylpyrazolo[1,5-a]pyrimidin-7-ones alleviate LPS-induced inflammation by modulating cell metabolism via CD73 upon macrophage polarization. Mol Immunol 2024; 170:99-109. [PMID: 38643690 DOI: 10.1016/j.molimm.2024.04.004] [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: 08/21/2023] [Revised: 03/10/2024] [Accepted: 04/06/2024] [Indexed: 04/23/2024]
Abstract
Macrophage polarization towards the M1 phenotype under bacterial product-related exposure (LPS) requires a rapid change in gene expression patterns and cytokine production along with a metabolic rewiring. Metabolic pathways and redox reactions are such tightly connected, giving rise to an area of research referred to as immunometabolism. A role in this context has been paid to the master redox-sensitive regulator Nuclear factor erythroid 2-related factor 2 (Nrf2) and to the 5'-ectonucleotidase CD73, a marker related to macrophage metabolism rearrangement under pro-inflammatory conditions. In this light, a cell model of LPS-stimulated macrophages has been established and nine 4,7-dihydro-4-ethylpyrazolo[l,5-a]pyrimidin-7-ones with a potential anti-inflammatory effect have been administered. Our data highlight that two selected compounds (namely, 5 and 8) inhibit the LPS-induced Nrf2 nuclear translocation and ameliorate the activity rate of the antioxidant enzyme catalase. Additionally, the pyridine-containing compound (8) promotes the shift from the pro-inflammatory immunophenotype M1 to the pro-resolving M2 one, by downregulating CD80 and iNOS and by enhancing CD163 and TGFβ1 expression. Most importantly, CD73 is modulated by these compounds as well as the lactate production. Our data demonstrate that pyrazolo[l,5-a]pyrimidine derivatives are effective as anti-inflammatory compounds. Furthermore, these pyrazolo[l,5-a]pyrimidines exert their action via CD73-related signaling and modulation of cell metabolism of activated macrophages.
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Affiliation(s)
- Alessia Ricci
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy
| | - Susi Zara
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy
| | - Fabrizio Carta
- NEUROFARBA Department, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Florence, Italy
| | - Valentina Di Valerio
- Department of Innovative Technologies in Medicine and Dentistry, University "G. D'Annunzio" Chieti-Pescara, Chieti, Italy
| | - Silvia Sancilio
- Department of Medicine and Ageing Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy
| | - Amelia Cataldi
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy
| | - Silvia Selleri
- NEUROFARBA Department, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Florence, Italy
| | - Claudiu T Supuran
- NEUROFARBA Department, Section of Pharmaceutical and Nutraceutical Sciences, University of Florence, Florence, Italy
| | - Simone Carradori
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy
| | - Marialucia Gallorini
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
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Zhai R, Gong Z, Wang M, Ni Z, Zhang J, Wang M, Zhang Y, Zeng F, Gu Z, Chen X, Wang X, Zhou P, Liu L, Zhu W. Neutrophil extracellular traps promote invasion and metastasis via NLRP3-mediated oral squamous cell carcinoma pyroptosis inhibition. Cell Death Discov 2024; 10:214. [PMID: 38697992 PMCID: PMC11066066 DOI: 10.1038/s41420-024-01982-9] [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: 02/29/2024] [Revised: 04/16/2024] [Accepted: 04/19/2024] [Indexed: 05/05/2024] Open
Abstract
Neutrophil extracellular traps (NETs) are reticular structures composed of neutrophil elastase (NE), cathepsin G (CG) and DNA-histone enzyme complexes. Accumulating evidence has revealed that NETs play important roles in tumor progression, metastasis, and thrombosis. However, our understanding of its clinical value and mechanism of action in oral squamous cell carcinoma (OSCC) is limited and has not yet been systematically described. Here, we aimed to investigate the clinical significance of NETs in OSCC and the mechanisms by which they affect its invasive and metastatic capacity. Our results demonstrated that high enrichment of NETs is associated with poor prognosis in OSCC, and mechanistic studies have shown that NE in NETs promotes invasion and metastasis via NLRP3-mediated inhibition of pyroptosis in OSCC. These findings may provide a new therapeutic approach for OSCC.
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Affiliation(s)
- Rundong Zhai
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Zizhen Gong
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Mengqi Wang
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Zihui Ni
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Jiayi Zhang
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Mengyao Wang
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Yu Zhang
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Fanrui Zeng
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Ziyue Gu
- Department of Oral and Maxillofacial-Head Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China
- College of Stomatology, Shanghai Jiao Tong University, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai, 200011, China
| | - Xingyu Chen
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Xiudi Wang
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Pengcheng Zhou
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China
| | - Laikui Liu
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China.
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China.
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China.
| | - Weiwen Zhu
- State Key Laboratory Cultivation Base of Research, Prevention and Treatment for Oral Diseases, Nanjing Medical University, Jiangsu, China.
- Department of Basic Science of Stomatology, The Affiliated Stomatological Hospital of Nanjing Medical University, Jiangsu, China.
- Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Jiangsu, China.
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Jiang Y, Geng Y, Gao R, Chen Z, Chen J, Mu X, Zhang Y, Yin X, Chen X, Li F, He J. Maternal exposure to ZIF-8 derails placental function by inducing trophoblast pyroptosis through neutrophils activation in mice. Food Chem Toxicol 2024; 187:114604. [PMID: 38508570 DOI: 10.1016/j.fct.2024.114604] [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: 11/14/2023] [Revised: 03/09/2024] [Accepted: 03/15/2024] [Indexed: 03/22/2024]
Abstract
Adverse environmental factors during maternal gestation pose a threat to pregnancy. Environmental factors, particularly nanoparticles, can impact pregnancy by causing damage to the placenta. Compared to early gestation, foetuses in late gestation are more robustly developed and at lower risk of adverse effects from environmental factors. Delivery systems for targeted therapy during pregnancy is predominantly focused on their application in late gestation. Zeolitic imidazolate framework-8 (ZIF-8) holds great potential for targeted drug therapy. To evaluate the value of ZIF-8 in targeted treatment of disorders associated with late gestation, it is crucial to investigate the biological effects of ZIF-8 exposure during late gestation. Here, a mouse model exposed to ZIF-8 particles at different doses (5, 10, and 15 mg/kg) during late gestation was constructed. We found that ZIF-8 particles were deposited in the uterus of pregnant mice. ZIF-8 could trigger placental neutrophil aggregation and induce inflammation, which led to trophoblast pyroptosis and impair placental function, adversely affecting the foetus. Neutrophil depletion alleviated placental and foetal damage induced by ZIF-8. This study provides a novel mechanistic view of the reproductive toxicity induced by ZIF-8 and may offer clues to reduce the latent harm of adverse environmental factors to pregnancy.
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Affiliation(s)
- Yu Jiang
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yanqing Geng
- Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Rufei Gao
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Zhuxiu Chen
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Jun Chen
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Xinyi Mu
- Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yan Zhang
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xin Yin
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xuemei Chen
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Fangfang Li
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Junlin He
- School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China.
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Liu T, Ma Z, Liu L, Pei Y, Wu Q, Xu S, Liu Y, Ding N, Guan Y, Zhang Y, Chen X. Conditioned medium from human dental pulp stem cells treats spinal cord injury by inhibiting microglial pyroptosis. Neural Regen Res 2024; 19:1105-1111. [PMID: 37862215 PMCID: PMC10749599 DOI: 10.4103/1673-5374.385309] [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: 11/19/2022] [Revised: 05/05/2023] [Accepted: 07/12/2023] [Indexed: 10/22/2023] Open
Abstract
Human dental pulp stem cell transplantation has been shown to be an effective therapeutic strategy for spinal cord injury. However, whether the human dental pulp stem cell secretome can contribute to functional recovery after spinal cord injury remains unclear. In the present study, we established a rat model of spinal cord injury based on impact injury from a dropped weight and then intraperitoneally injected the rats with conditioned medium from human dental pulp stem cells. We found that the conditioned medium effectively promoted the recovery of sensory and motor functions in rats with spinal cord injury, decreased expression of the microglial pyroptosis markers NLRP3, GSDMD, caspase-1, and interleukin-1β, promoted axonal and myelin regeneration, and inhibited the formation of glial scars. In addition, in a lipopolysaccharide-induced BV2 microglia model, conditioned medium from human dental pulp stem cells protected cells from pyroptosis by inhibiting the NLRP3/caspase-1/interleukin-1β pathway. These results indicate that conditioned medium from human dental pulp stem cells can reduce microglial pyroptosis by inhibiting the NLRP3/caspase-1/interleukin-1β pathway, thereby promoting the recovery of neurological function after spinal cord injury. Therefore, conditioned medium from human dental pulp stem cells may become an alternative therapy for spinal cord injury.
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Affiliation(s)
- Tao Liu
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Ziqian Ma
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Liang Liu
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yilun Pei
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Qichao Wu
- Department of Orthopedic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Songjie Xu
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yadong Liu
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Nan Ding
- Department of Stomatology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Yun Guan
- Department of Anesthesiology and Critical Care Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
- Department of Neurological Surgery, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Yan Zhang
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xueming Chen
- Department of Orthopedic Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
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Huang Y, Dai F, Chen L, Li Z, Liu H, Cheng Y. BMP4 in Human Endometrial Stromal Cells Can Affect Decidualization by Regulating FOXO1 Expression. Endocrinology 2024; 165:bqae049. [PMID: 38679470 DOI: 10.1210/endocr/bqae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/06/2024] [Accepted: 04/15/2024] [Indexed: 05/01/2024]
Abstract
CONTEXT Recurrent spontaneous abortion (RSA) is defined as the loss of 2 or more consecutive intrauterine pregnancies with the same sexual partner in the first trimester. Despite its significance, the etiology and underlying mechanisms of RSA remain elusive. Defective decidualization is proposed as one of the potential causes of RSA, with abnormal decidualization leading to disturbances in trophoblast invasion function. OBJECTIVE To assess the role of bone morphogenetic protein 4 (BMP4) in decidualization and RSA. METHODS Decidual samples were collected from both RSA patients and healthy controls to assess BMP4 expression. In vitro cell experiments utilized the hESC cell line to investigate the impact of BMP4 on decidualization and associated aging, as well as its role in the maternal-fetal interface communication. Subsequently, a spontaneous abortion mouse model was established to evaluate embryo resorption rates and BMP4 expression levels. RESULTS Our study identified a significant downregulation of BMP4 expression in the decidua of RSA patients compared to the normal control group. In vitro, BMP4 knockdown resulted in inadequate decidualization and inhibited associated aging processes. Mechanistically, BMP4 was implicated in the regulation of FOXO1 expression, thereby influencing decidualization and aging. Furthermore, loss of BMP4 hindered trophoblast migration and invasion via FOXO1 modulation. Additionally, BMP4 downregulation was observed in RSA mice. CONCLUSION Our findings highlighted the downregulation of BMP4 in both RSA patients and mice. BMP4 in human endometrial stromal cells was shown to modulate decidualization by regulating FOXO1 expression. Loss of BMP4 may contribute to the pathogenesis of RSA, suggesting potential avenues for abortion prevention strategies.
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Affiliation(s)
- Yanjie Huang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
| | - Fangfang Dai
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
| | - Liping Chen
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
| | - Zhidian Li
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
| | - Hua Liu
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
| | - Yanxiang Cheng
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, People's Republic of China
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Jia X, Ju J, Li Z, Peng X, Wang J, Gao F. Inhibition of spinal BRD4 alleviates pyroptosis and M1 microglia polarization via STING-IRF3 pathway in morphine-tolerant rats. Eur J Pharmacol 2024; 969:176428. [PMID: 38432572 DOI: 10.1016/j.ejphar.2024.176428] [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: 11/13/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND Morphine tolerance has been a challenging medical issue. Neuroinflammation is considered as a critical mechanism for the development of morphine tolerance. Bromodomain-containing protein 4 (BRD4), a key regulator in cell damage and inflammation, participates in the development of chronic pain. However, whether BRD4 is involved in morphine tolerance and the underlying mechanisms remain unknown. METHODS The morphine-tolerant rat model was established by intrathecal administration of morphine twice daily for 7 days. Behavior test was assessed by a tail-flick latency test. The roles of BRD4, pyroptosis, microglia polarization and related signaling pathways in morphine tolerance were elucidated by Western blot, real-time quantitative polymerase chain reaction, and immunofluorescence. RESULTS Repeated morphine administration upregulated BRD4 level, induced pyroptosis, and promoted microglia M1-polarization in spinal cord, accompanied by the release of proinflammatory cytokines, such as TNF-α and IL-1β. JQ-1, a BRD4 antagonist, alleviated the development of morphine tolerance, diminished pyroptosis and induced the switch of microglia from M1 to M2 phenotype. Mechanistically, stimulator of interferon gene (STING)- interferon regulatory factor 3 (IRF3) pathway was activated and the protective effect of JQ-1 against morphine tolerance was at least partially mediated by inhibition of STING-IRF3 pathway. CONCLUSION This study demonstrated for the first time that spinal BRD4 contributes to pyroptosis and switch of microglia polarization via STING-IRF3 signaling pathway during the development of morphine tolerance, which extend the understanding of the neuroinflammation mechanism of morphine tolerance and provide an alternative strategy for the precaution against of this medical condition.
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Affiliation(s)
- Xiaoqian Jia
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jie Ju
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zheng Li
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xiaoling Peng
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jihong Wang
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Feng Gao
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Xu Q, Kong F, Zhao G, Jin J, Feng S, Li M. SP1 transcriptionally activates HTR2B to aggravate traumatic spinal cord injury by shifting microglial M1/M2 polarization. J Orthop Surg Res 2024; 19:230. [PMID: 38589918 PMCID: PMC11000286 DOI: 10.1186/s13018-024-04678-z] [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: 01/16/2024] [Accepted: 03/14/2024] [Indexed: 04/10/2024] Open
Abstract
BACKGROUND Spinal cord injury (SCI) can result in structural and functional damage to the spinal cord, which may lead to loss of limb movement and sensation, loss of bowel and bladder control, and other complications. Previous studies have revealed the critical influence of trans-acting transcription factor 1 (SP1) in neurological pathologies, however, its role and mechanism in SCI have not been fully studied. METHODS The study was performed using mouse microglia BV2 stimulated using lipopolysaccharide (LPS) and male adult mice subjected to spinal hitting. Western blotting was performed to detect protein expression of SP1, 5-hydroxytryptamine (serotonin) receptor 2B (HTR2B), BCL2-associated x protein (Bax), B-cell lymphoma-2 (Bcl-2), inducible nitric oxide synthase (iNOS), clusters of differentiation 86 (CD86), Arginase 1 (Arg-1) and clusters of differentiation 206 (CD206). Cell viability and apoptosis were analyzed by MTT assay and TUNEL assay. mRNA levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), interleukin-4 (IL-4) and tumor necrosis factor-β (TNF-β) were quantified by quantitative real-time polymerase chain reaction. The association of SP1 and HTR2B was identified by chromatin immunoprecipitation assay and dual-luciferase reporter assay. HE staining assay was performed to analyze the pathological conditions of spinal cord tissues. RESULTS LPS treatment induced cell apoptosis and inhibited microglia polarization from M1 to M2 phenotype, accompanied by an increase of Bax protein expression and a decrease of Bcl-2 protein expression, however, these effects were relieved after SP1 silencing. Mechanism assays revealed that SP1 transcriptionally activated HTR2B in BV2 cells, and HTR2B knockdown rescued LPS-induced effects on BV2 cell apoptosis and microglial M1/M2 polarization. Moreover, SP1 absence inhibited BV2 cell apoptosis and promoted microglia polarization from M1 to M2 phenotype by decreasing HTR2B expression. SCI mouse model assay further showed that SP1 downregulation could attenuate spinal hitting-induced promoting effects on cell apoptosis of spinal cord tissues and microglial M1 polarization. CONCLUSION SP1 transcriptionally activated HTR2B to aggravate traumatic SCI by shifting microglial M1/M2 polarization.
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Affiliation(s)
- Qifei Xu
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Fanguo Kong
- Department of Orthopedics, Henan Provincial Orthopedic Hospital, No. 100, Yongping Road, Zhengdong New District, Zhengzhou, 450045, China.
| | - Guanghui Zhao
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Junwei Jin
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Shengkai Feng
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
| | - Ming Li
- Department of Orthopedics, The First People's Hospital of Pingdingshan, Pingdingshan, 467000, China
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Qian Z, Xia M, Zhao T, Li Y, Li G, Zhang Y, Li H, Yang L. ACOD1, rather than itaconate, facilitates p62-mediated activation of Nrf2 in microglia post spinal cord contusion. Clin Transl Med 2024; 14:e1661. [PMID: 38644791 PMCID: PMC11033726 DOI: 10.1002/ctm2.1661] [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: 02/02/2024] [Revised: 03/31/2024] [Accepted: 04/02/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Spinal cord injury (SCI)-induced neuroinflammation and oxidative stress (OS) are crucial events causing neurological dysfunction. Aconitate decarboxylase 1 (ACOD1) and its metabolite itaconate (Ita) inhibit inflammation and OS by promoting alkylation of Keap1 to induce Nrf2 expression; however, it is unclear whether there is another pathway regulating their effects in inflammation-activated microglia after SCI. METHODS Adult male C57BL/6 ACOD1-/- mice and their wild-type (WT) littermates were subjected to a moderate thoracic spinal cord contusion. The degree of neuroinflammation and OS in the injured spinal cord were assessed using qPCR, western blot, flow cytometry, immunofluorescence, and trans-well assay. We then employed immunoprecipitation-western blot, chromatin immunoprecipitation (ChIP)-PCR, dual-luciferase assay, and immunofluorescence-confocal imaging to examine the molecular mechanisms of ACOD1. Finally, the locomotor function was evaluated with the Basso Mouse Scale and footprint assay. RESULTS Both in vitro and in vivo, microglia with transcriptional blockage of ACOD1 exhibited more severe levels of neuroinflammation and OS, in which the expression of p62/Keap1/Nrf2 was down-regulated. Furthermore, silencing ACOD1 exacerbated neurological dysfunction in SCI mice. Administration of exogenous Ita or 4-octyl itaconate reduced p62 phosphorylation. Besides, ACOD1 was capable of interacting with phosphorylated p62 to enhance Nrf2 activation, which in turn further promoted transcription of ACOD1. CONCLUSIONS Here, we identified an unreported ACOD1-p62-Nrf2-ACOD1 feedback loop exerting anti-inflammatory and anti-OS in inflammatory microglia, and demonstrated the neuroprotective role of ACOD1 after SCI, which was different from that of endogenous and exogenous Ita. The present study extends the functions of ACOD1 and uncovers marked property differences between endogenous and exogenous Ita. KEY POINTS ACOD1 attenuated neuroinflammation and oxidative stress after spinal cord injury. ACOD1, not itaconate, interacted with p-p62 to facilitate Nrf2 expression and nuclear translocation. Nrf2 was capable of promoting ACOD1 transcription in microglia.
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Affiliation(s)
- Zhanyang Qian
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
| | - Mingjie Xia
- Department of Spine SurgeryNantong First People's HospitalThe Second Affiliated Hospital of Nantong UniversityNantongChina
| | - Tianyu Zhao
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
- Postgraduate SchoolDalian Medical UniversityDalianChina
| | - You Li
- Department of Trauma and Reconstructive SurgeryRWTH Aachen University HospitalAachenGermany
| | - Guangshen Li
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
| | - Yanan Zhang
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
- Postgraduate SchoolDalian Medical UniversityDalianChina
| | - Haijun Li
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
| | - Lei Yang
- Department of OrthopedicsTaizhou School of Clinical MedicineTaizhou People's Hospital of Nanjing Medical University, Nanjing Medical UniversityTaizhouChina
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Li Y, Fan H, Han X, Sun J, Ni M, Hou X, Fang F, Zhang W, Ma P. Long Non-Coding RNA MALAT1 Protects Against Spinal Cord Injury via Suppressing microRNA-125b-5p Mediated Microglial M1 Polarization, Neuroinflammation, and Neural Apoptosis. Mol Neurobiol 2024; 61:2136-2150. [PMID: 37858031 DOI: 10.1007/s12035-023-03664-6] [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: 06/26/2023] [Accepted: 09/18/2023] [Indexed: 10/21/2023]
Abstract
Our previous studies have discovered that long non-coding RNA (lncRNA) MALAT1 and its target microRNA-125b-5p (miR-125b-5p) are implicated in neurological diseases via regulating neuroinflammation and neuronal injury. This study aimed to further explore the relationship between lncRNA MALAT1 and miR-125b-5p, as well as their effect on microglial activation, neuroinflammation, and neural apoptosis in spinal cord injury (SCI). Primary microglia from Sprague Dawley rats were stimulated with lipopolysaccharide (LPS). Then, microglia were transfected with lncRNA MALAT1 overexpression or knock-down adenovirus-associated virus with or without miR-125b-5p mimic. The culture medium of microglia was incubated with primary neurons. SCI rats were established for in vivo validation. LncRNA MALAT1 expression was reduced by LPS treatment in a dose-dependent manner. LncRNA MALAT1 overexpression suppressed the microglial M1 polarization (decreased iNOS but increased ARG1), neuroinflammation (declined PTGS2, TNF-α, IL-1β, and IL-6), and microglia-induced neural apoptosis (lower TUNEL positive cells and C-caspase3 but higher BCL2) under LPS treatment; its knock-down displayed the opposite trend. Moreover, lncRNA MALAT1 directly bound to and negatively regulated miR-125b-5p. MiR-125b-5p mimic promoted microglial M1 polarization, neuroinflammation, and microglia-induced neural apoptosis following LPS treatment; also, it could attenuate the effect of lncRNA MALAT1. Further in vivo study displayed that lncRNA MALAT1 overexpression elevated the Basso-Beattie-Bresnahan motor function score and improved neural injury. Also, in vivo validation indicated a similar effect of lncRNA MALAT1 on microglial polarization and neuroinflammation as in vitro. LncRNA MALAT1 improves SCI recovery via miR-125b-5p mediated microglial M1 polarization, neuroinflammation, and neural apoptosis.
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Affiliation(s)
- Yuanlong Li
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Zhengzhou University, Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Henan University, School of Clinical Medicine, Henan University, Zhengzhou, 450000, Henan, China
| | - Hua Fan
- School of Clinical Medicine, The First Affiliated Hospital of Henan University of Science and Technology, Henan University of Science and Technology, Luoyang, 471003, Henan, China
| | - Xiong Han
- Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
| | - Jun Sun
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Zhengzhou University, Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Henan University, School of Clinical Medicine, Henan University, Zhengzhou, 450000, Henan, China
| | - Ming Ni
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
- Department of Clinical Pharmacy, Fuwai Central China Cardiovascular Hospital, Zhengzhou, 450000, Henan, China
| | - Xiaodan Hou
- Ward of Heart Failure, Fuwai Central China Cardiovascular Hospital, Zhengzhou, 450000, Henan, China
| | - Fengqin Fang
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Zhengzhou University, Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Henan University, School of Clinical Medicine, Henan University, Zhengzhou, 450000, Henan, China
| | - Wei Zhang
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Zhengzhou University, Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450000, Henan, China
- Department of Pharmacy, People's Hospital of Henan University, School of Clinical Medicine, Henan University, Zhengzhou, 450000, Henan, China
| | - Peizhi Ma
- Department of Pharmacy, Henan Provincial People's Hospital, Zhengzhou, 450000, Henan, China.
- Department of Pharmacy, People's Hospital of Zhengzhou University, Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, 450000, Henan, China.
- Department of Pharmacy, People's Hospital of Henan University, School of Clinical Medicine, Henan University, Zhengzhou, 450000, Henan, 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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Chen W, Gao X, Yang W, Xiao X, Pan X, Li H. Htr2b Promotes M1 Microglia Polarization and Neuroinflammation after Spinal Cord Injury via Inhibition of Neuregulin-1/ErbB Signaling. Mol Neurobiol 2024; 61:1643-1654. [PMID: 37747614 DOI: 10.1007/s12035-023-03656-6] [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] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
The secondary injury of spinal cord injury (SCI) is dominated by neuroinflammation, which was caused by microglia M1 polarization. This study aimed to investigate the role and mechanism of Htr2b on neuroinflammation of SCI. The BV2 and HMC3 microglia were treated with lipopolysaccharide (LPS) or interferon (IFN)-γ to simulate in vitro models of SCI. Sprague-Dawley rats were subjected to the T10 laminectomy to induce animal model of SCI. Htr2b mRNA expression was measured by qRT-PCR. The expression of Htr2b and Iba-1 was detected by western blot and immunofluorescence. The expression of inflammatory cytokines in vitro and in vivo was also measured. Kyoto Encyclopedia of Genes and Genomes (KEGG) was employed to analyze Htr2b-regulated signaling pathways. Rat behavior was analyzed by the Basso, Beattie, and Bresnahan (BBB) and inclined plane test. Rat dorsal horn tissues were stained by hematoxylin-eosin (H&E) and Nissl to measure neuron loss. Htr2b was highly expressed in LPS- and IFN-γ-treated microglia and SCI rats. SCI modeling promoted M1 microglia polarization and increased levels of inflammatory cytokines. Inhibition of Htr2b by Htr2b shRNA or RS-127445 reduced the expression of Htr2b, Iba-1, and iNOS and suppressed cytokine levels. KEGG showed that Htr2b inhibited ErbB signaling pathway. Inhibition of Htr2b increased protein expression of neuregulin-1 (Nrg-1) and p-ErbB4. Inhibition of the ErbB signaling pathway markedly reversed the effect of Htr2b shRNA on M1 microglia polarization and inflammatory cytokines. Htr2b promotes M1 microglia polarization and neuroinflammation after SCI by inhibiting Nrg-1/ErbB signaling pathway.
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Affiliation(s)
- Wenhao Chen
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xianlei Gao
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
| | - Wanliang Yang
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xun Xiao
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
- Cheeloo College of Medicine, Shandong University, 250012, Jinan, Shandong, People's Republic of China
| | - Xin Pan
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China
| | - Hao Li
- Department of Orthopaedics, Qilu Hospital of Shandong University, No. 107, Wenhuaxi Road, Lixia District, 250012, Jinan, Shandong, People's Republic of China.
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Ma N, Lu H, Li N, Ni W, Zhang W, Liu Q, Wu W, Xia S, Wen J, Zhang T. CHOP-mediated Gasdermin E expression promotes pyroptosis, inflammation, and mitochondrial damage in renal ischemia-reperfusion injury. Cell Death Dis 2024; 15:163. [PMID: 38388468 PMCID: PMC10883957 DOI: 10.1038/s41419-024-06525-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/24/2024]
Abstract
In clinical practice, renal ischemia-reperfusion injury (IRI) is a common cause of acute kidney injury (AKI), often leading to acute renal failure or end-stage renal disease (ESRD). The current understanding of renal IRI mechanisms remains unclear, and effective therapeutic strategies and clear targets are lacking. Therefore, the need to find explicit and effective ways to reduce renal IRI remains a scientific challenge. The current study explored pyroptosis, a type of inflammation-regulated programmed cell death, and the role of Gasdermins E (GSDME)-mediated pyroptosis, mitochondrial damage, and inflammation in renal IRI. The analysis of human samples showed that the expression levels of GSDME in normal human renal tissues were higher than those of GSDMD. Moreover, our study demonstrated that GSDME played an important role in mediating pyroptosis, inflammation, and mitochondrial damage in renal IRI. Subsequently, GSDME-N accumulated in the mitochondrial membrane, leading to mitochondrial damage and activation of caspase3, which generated a feed-forward loop of self-amplification injury. However, GSDME knockout resulted in the amelioration of renal IRI. Moreover, the current study found that the transcription factor CHOP was activated much earlier in renal IRI. Inhibition of BCL-2 by CHOP leaded to casapse3 activation, resulting in mitochondrial damage and apoptosis; not only that, but CHOP positively regulated GSDME thereby causing pyroptosis. Therefore, this study explored the transcriptional mechanisms of GSDME during IRI development and the important role of CHOP/Caspase3/GSDME mechanistic axis in regulating pyroptosis in renal IRI. This axis might serve as a potential therapeutic target.
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Affiliation(s)
- Nannan Ma
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Hao Lu
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Ning Li
- Department of Nephropathy, The Zhongda Affilicated Hospital of Southeast University, Nanjing, Jiangsu, People's Republic of China
| | - Weijian Ni
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, People's Republic of China
- Department of Pharmacy, Centre for Leading Medicine and Advanced Technologies of IHM, Anhui Provincial Hospital, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, People's Republic of China
- Anhui Provincial Key Laboratory of Precision Pharmaceutical Preparations and Clinical Pharmacy, Hefei, Anhui, People's Republic of China
| | - Wenbo Zhang
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Qiang Liu
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Wenzheng Wu
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Shichao Xia
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Jiagen Wen
- Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei, Anhui, People's Republic of China.
| | - Tao Zhang
- Department of Urology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China.
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Wang Q, Tang Y, Dai A, Li T, Pei Y, Zhang Z, Hu X, Chen T, Chen Q. VNP20009-Abvec-Igκ-MIIP suppresses ovarian cancer progression by modulating Ras/MEK/ERK signaling pathway. Appl Microbiol Biotechnol 2024; 108:218. [PMID: 38372808 PMCID: PMC10876780 DOI: 10.1007/s00253-024-13047-z] [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: 10/18/2023] [Revised: 01/15/2024] [Accepted: 01/30/2024] [Indexed: 02/20/2024]
Abstract
Ovarian cancer poses a significant threat to women's health, with conventional treatment methods encountering numerous limitations, and the emerging engineered bacterial anti-tumor strategies offer newfound hope for ovarian cancer treatment. In this study, we constructed the VNP20009-Abvec-Igκ-MIIP (VM) engineered strain and conducted initial assessments of its in vitro growth performance and the expression capability of migration/invasion inhibitory protein (MIIP). Subsequently, ID8 ovarian cancer cells and mouse cancer models were conducted to investigate the impact of VM on ovarian cancer. Our results revealed that the VM strain demonstrated superior growth performance, successfully invaded ID8 ovarian cancer cells, and expressed MIIP, consequently suppressing cell proliferation and migration. Moreover, VM specifically targeted tumor sites and expressed MIIP which further reduced the tumor volume of ovarian cancer mice (p < 0.01), via the downregulation of epidermal growth factor receptor (EGFR), Ras, p-MEK, and p-ERK. The downregulation of the PI3K/AKT signaling pathway and the decrease in Bcl-2/Bax levels also indicated VM's apoptotic potency on ovarian cancer cells. In summary, our research demonstrated that VM exhibits promising anti-tumor effects both in vitro and in vivo, underscoring its potential for clinical treatment of ovarian cancer. KEY POINTS: • This study has constructed an engineered strain of Salmonella typhimurium capable of expressing anticancer proteins • The engineered bacteria can target and colonize tumor sites in vivo • VM can inhibit the proliferation, migration, and invasion of ovarian cancer cells.
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Affiliation(s)
- Qian Wang
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Yuwen Tang
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Ang Dai
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Tiange Li
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Yulin Pei
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Zuo Zhang
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Xinyue Hu
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China
| | - Tingtao Chen
- National Engineering Research Center for Bioengineering Drugs and the Technologies, Institute of Translational Medicine, Jiangxi Medical College, Nanchang University, No. 1299, Xuefu Avenue, Honggutan District, Nanchang City, Jiangxi Province, China.
| | - Qi Chen
- Department of Obstetrics and Gynecology, The 2nd Affiliated Hospital, Jiangxi Medical College, Nanchang University, 1 Minde Road, Donghu District, Nanchang City, 330000, Jiangxi Province, China.
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Zhang H, Han K, Li H, Zhang J, Zhao Y, Wu Y, Wang B, Ma J, Luan X. hPMSCs Regulate the Level of TNF-α and IL-10 in Th1 Cells and Improve Hepatic Injury in a GVHD Mouse Model via CD73/ADO/Fyn/Nrf2 Axis. Inflammation 2024; 47:244-263. [PMID: 37833615 DOI: 10.1007/s10753-023-01907-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/18/2023] [Accepted: 09/13/2023] [Indexed: 10/15/2023]
Abstract
Mesenchymal stem cells (MSCs) ameliorate graft-versus-host disease (GVHD)-induced tissue damage by exerting immunosuppressive effects. However, the related mechanism remains unclear. Here, we explored the therapeutic effect and mechanism of action of human placental-derived MSCs (hPMSCs) on GVHD-induced mouse liver tissue damage, which shows association with inflammatory responses, fibrosis accompanied by hepatocyte tight junction protein loss, the upregulation of Bax, and the downregulation of Bcl-2. It was observed in GVHD mice and Th1 cell differentiation system that hPMSCs treatment increased IL-10 levels and decreased TNF-α levels in the Th1 subsets via CD73. Moreover, hPMSCs treatment reduced tight junction proteins loss and inhibited hepatocyte apoptosis in the livers of GVHD mice via CD73. ADO level analysis in GVHD mice and the Th1 cell differentiation system showed that hPMSCs could also upregulate ADO levels via CD73. Moreover, hPMSCs enhanced Nrf2 expression and diminished Fyn expression via the CD73/ADO pathway in Th1, TNF-α+, and IL-10+ cells. These results indicated that hPMSCs promoted and inhibited the secretion of IL-10 and TNF-α, respectively, during Th1 cell differentiation through the CD73/ADO/Fyn/Nrf2 axis signaling pathway, thereby alleviating liver tissue injury in GVHD mice.
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Affiliation(s)
- Hengchao Zhang
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Kaiyue Han
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Heng Li
- Traditional Chinese Medicine Hospital of Muping District of Yantai City, Yantai, 264100, Shandong Province, China
| | - Jiashen Zhang
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Yaxuan Zhao
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Yunhua Wu
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Bin Wang
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China
| | - Junjie Ma
- Yuhuangding Hospital Affiliated to Qingdao University, Yantai, 264000, Shandong Province, China.
| | - Xiying Luan
- Department of Immunology, Binzhou Medical University, Yantai, 264003, Shandong Province, China.
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Lin L, Yan J, Sun J, Zhang J, Liao B. Screening and evaluation of metabolites binding PRAS40 from Erxian decoction used to treat spinal cord injury. Front Pharmacol 2024; 15:1339956. [PMID: 38318139 PMCID: PMC10839085 DOI: 10.3389/fphar.2024.1339956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 01/05/2024] [Indexed: 02/07/2024] Open
Abstract
Objective: The PRAS40 is an essential inhibitory subunit of the mTORC1 complex, which regulates autophagy. It has been suggested that Erxian Decoction (EXD) could treat spinal cord injury (SCI) via the autophagy pathway. However, the mechanism of whether EXD acts through PRAS40 remains unclear. Methods: With the help of immobilized PRAS40, isothermal titration calorimetry (ITC) and molecular docking, the bioactive metabolites in the EXD were screened. To establish in vitro SCI models, PC12 cells were exposed to hydrogen peroxide (H2O2) and then treated with the identified EXD substances. Furthermore, Western blot assay was carried out to identify potential molecular mechanisms involved. For assessing the effect of metabolites in vivo, the SCI model rats were first pretreated with or without the metabolite and then subjected to the immunohistochemistry (IHC) staining, Basso, Beattie & Bresnahan (BBB) locomotor rating scale, and H&E staining. Results: The immobilized PRAS40 isolated indole, 4-nitrophenol, terephthalic acid, palmatine, sinapinaldehyde, and 3-chloroaniline as the potential ligands binding to PRAS40. Furthermore, the association constants of palmatine and indole as 2.84 × 106 M-1 and 3.82 × 105 M-1 were elucidated via ITC due to the drug-like properties of these two metabolites. Molecular docking results also further demonstrated the mechanism of palmatine binding to PRAS40. Western blot analysis of PC12 cells demonstrated that palmatine inhibited the expression of p-mTOR by binding to PRAS40, activating the autophagic flux by markedly increasing LC3. The injection of palmatine (10μM and 20 μM) indicated notably increased BBB scores in the SCI rat model. Additionally, a dose-dependent increase in LC3 was observed by IHC staining. Conclusion: This research proved that EXD comprises PRAS40 antagonists, and the identified metabolite, palmatine, could potentially treat SCI by activating the autophagic flux.
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Affiliation(s)
- Li Lin
- Department of Orthopedics, Tangdu Hospital, Air Force Military Medical University, Xi’an, Shaanxi, China
| | - Jingchuan Yan
- Department of Orthopedics, Tangdu Hospital, Air Force Military Medical University, Xi’an, Shaanxi, China
| | - Jin Sun
- Department of Orthopedics, Tangdu Hospital, Air Force Military Medical University, Xi’an, Shaanxi, China
| | - Jianfeng Zhang
- Department of Pharmacy, Eighth Hospital of Xi’an City, Xi’an, Shaanxi, China
| | - Bo Liao
- Department of Orthopedics, Tangdu Hospital, Air Force Military Medical University, Xi’an, Shaanxi, China
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Zhuo LB, Liu YM, Jiang Y, Yan Z. Zinc oxide nanoparticles induce acute lung injury via oxidative stress-mediated mitochondrial damage and NLRP3 inflammasome activation: In vitro and in vivo studies. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122950. [PMID: 37979646 DOI: 10.1016/j.envpol.2023.122950] [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: 09/20/2023] [Revised: 11/02/2023] [Accepted: 11/13/2023] [Indexed: 11/20/2023]
Abstract
The widespread application of zinc oxide nanoparticles (ZnO-NPs) brings convenience to our lives while also renders threats to public health and ecological environment. The lung has been recognized as a primary target of ZnO-NPs, however, the detrimental effects and mechanism of ZnO-NPs on the respiratory system have not been thoroughly characterized so far. To investigate the effect of ZnO-NPs on acute lung injury (ALI), Sprague Dawley rats were intratracheally instilled with ZnO-NPs suspension at doses of 1, 2, and 4 mg/kg/day for 3 consecutive days. Our study revealed that ZnO-NPs induced ALI in rats characterized by increased airway resistance, excessive inflammatory response and lung histological damage. In addition, we identified several molecular biomarkers related to the potential mechanism of ZnO-NP-induced ALI, including oxidative stress, mitochondrial damage, and NLRP3 inflammasome activation. The results of in vitro experiments showed that the viability of A549 cells decreased with the increase in ZnO-NPs concentration. Meanwhile, it was also found that ZnO-NP treatment induced the production of ROS, the decrease in mitochondrial membrane potential and activation of NLRP3 inflammasome in A549 cells. Furthermore, to explore the underlying molecular mechanisms of ZnO-NP-induced ALI, N-acetyl-L-cysteine (a ROS scavenger), Cyclosporin A (an inhibitor for mitochondrial depolarization) and Glibenclamide (an inhibitor for NLRP3 inflammasome activity) were used to pre-treat A549 cells before ZnO-NPs stimulation in the in vitro experiments, respectively. The results from this study suggested that ZnO-NP-induced ROS production triggered the accumulation of damaged mitochondria and assembly of NLRP3 inflammatory complex, leading to maturation and release of IL-1β. Moreover, ZnO-NP-induced NLRP3 inflammasome activation was partly mediated by mitochondrial damage. Taken together, our study suggested that ZnO-NPs induced ALI through oxidative stress-mediated mitochondrial damage and NLRP3 inflammasome activation and provided insight into the mechanisms of ZnO-NPs-induced ALI.
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Affiliation(s)
- Lai-Bao Zhuo
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yu-Mei Liu
- International School of Public Health and One Health, Hainan Medical University, Haikou, China
| | - Yuhan Jiang
- Department of Built Environment, North Carolina A&T State University, Greensboro, NC, 27411, United States
| | - Zhen Yan
- International School of Public Health and One Health, Hainan Medical University, Haikou, China; School of Public Health, Zhengzhou University, Zhengzhou, China.
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Liu J, Zhou J, Luan Y, Li X, Meng X, Liao W, Tang J, Wang Z. cGAS-STING, inflammasomes and pyroptosis: an overview of crosstalk mechanism of activation and regulation. Cell Commun Signal 2024; 22:22. [PMID: 38195584 PMCID: PMC10775518 DOI: 10.1186/s12964-023-01466-w] [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: 08/23/2023] [Accepted: 12/28/2023] [Indexed: 01/11/2024] Open
Abstract
BACKGROUND Intracellular DNA-sensing pathway cGAS-STING, inflammasomes and pyroptosis act as critical natural immune signaling axes for microbial infection, chronic inflammation, cancer progression and organ degeneration, but the mechanism and regulation of the crosstalk network remain unclear. Cellular stress disrupts mitochondrial homeostasis, facilitates the opening of mitochondrial permeability transition pore and the leakage of mitochondrial DNA to cell membrane, triggers inflammatory responses by activating cGAS-STING signaling, and subsequently induces inflammasomes activation and the onset of pyroptosis. Meanwhile, the inflammasome-associated protein caspase-1, Gasdermin D, the CARD domain of ASC and the potassium channel are involved in regulating cGAS-STING pathway. Importantly, this crosstalk network has a cascade amplification effect that exacerbates the immuno-inflammatory response, worsening the pathological process of inflammatory and autoimmune diseases. Given the importance of this crosstalk network of cGAS-STING, inflammasomes and pyroptosis in the regulation of innate immunity, it is emerging as a new avenue to explore the mechanisms of multiple disease pathogenesis. Therefore, efforts to define strategies to selectively modulate cGAS-STING, inflammasomes and pyroptosis in different disease settings have been or are ongoing. In this review, we will describe how this mechanistic understanding is driving possible therapeutics targeting this crosstalk network, focusing on the interacting or regulatory proteins, pathways, and a regulatory mitochondrial hub between cGAS-STING, inflammasomes, and pyroptosis. SHORT CONCLUSION This review aims to provide insight into the critical roles and regulatory mechanisms of the crosstalk network of cGAS-STING, inflammasomes and pyroptosis, and to highlight some promising directions for future research and intervention.
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Affiliation(s)
- Jingwen Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Jing Zhou
- The Second Hospital of Ningbo, Ningbo, 315099, China
| | - Yuling Luan
- Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Xiaoying Li
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200080, China
| | - Xiangrui Meng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Wenhao Liao
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China
| | - Jianyuan Tang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
| | - Zheilei Wang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610075, China.
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Zeng J, Pei H, Wu H, Chen W, Du R, He Z. Palmatine attenuates LPS-induced neuroinflammation through the PI3K/Akt/NF-κB pathway. J Biochem Mol Toxicol 2024; 38:e23544. [PMID: 37815058 DOI: 10.1002/jbt.23544] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 08/16/2023] [Accepted: 09/26/2023] [Indexed: 10/11/2023]
Abstract
To investigate the key molecular mechanisms of palmatine for the treatment of neuroinflammation through modulation of a pathway using molecular docking, molecular dynamics (MD) simulation combined with network pharmacology, and animal experiments. Five alkaloid components were obtained from the traditional Chinese medicine Huangteng through literature mining. Molecular docking and MD simulation with acetylcholinesterase were used to screen palmatine. At the animal level, mice were injected with LPS intracerebrally to cause a neuroinflammatory model, and the Morris water maze experiment was performed to examine the learning memory of mice. Anxiety levels were tested using the autonomous activity behavior experiment with the open field and elevated behavior experiments. HE staining and Niss staining were performed on brain tissue sections to observe morphological lesions and apoptosis; serum was examined for inflammatory factors TNF-α, IL-6, and IL-1β; Western blot was performed to detect the protein expression. The expression of PI3K/AKT/NFkB signaling pathway-related proteins was examined by Western blot. The results of network pharmacology showed that the screening of palmatine activation containing the PI3K/Akt/NFkB signaling pathway exerts antineuroinflammatory effects. Results from behavioral experiments showed that Pal enhanced learning memory in model mice, improved anxiety behavior, and significantly improved brain damage caused by neuroinflammation. The results of HE staining and Niss staining of brain tissue sections showed that palmatine could alleviate morphological lesions and nucleus damage in brain tissue. Palmatine improved the levels of serum inflammatory factors TNF-α, IL-6, and IL-1β. SOD, MDA, CAT, ACH, and ACHE in the hippocampus were improved. Western blot results showed that palmatine administration ameliorated LPS-induced neuroinflammation through the PI3K/Akt/NFkB pathway.
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Affiliation(s)
- Jianning Zeng
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Hongyan Pei
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Hong Wu
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Weijia Chen
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
| | - Rui Du
- Department of Science and Technology of Jilin Province, Department of Traditional Chinese Medicine Industry in Xinjiang, Engineering Research Center for High-Efficiency Breeding and Product Development Technology of Sika Deer, Jilin, China
| | - Zhongmei He
- Department of Agriculture and Rural Affairs of Jilin Province Pharmacy and Pharmaceutical Science and Technology, College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun, Jilin, China
- Department of Science and Technology of Jilin Province, Department of Traditional Chinese Medicine Industry in Xinjiang, Engineering Research Center for High-Efficiency Breeding and Product Development Technology of Sika Deer, Jilin, China
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Wang M, Fu Q. Nanomaterials for Disease Treatment by Modulating the Pyroptosis Pathway. Adv Healthc Mater 2024; 13:e2301266. [PMID: 37354133 DOI: 10.1002/adhm.202301266] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/06/2023] [Indexed: 06/26/2023]
Abstract
Pyroptosis differs significantly from apoptosis and cell necrosis as an alternative mode of programmed cell death. Its occurrence is mediated by the gasdermin protein, leading to characteristic outcomes including cell swelling, membrane perforation, and release of cell contents. Research underscores the role of pyroptosis in the etiology and progression of many diseases, making it a focus of research intervention as scientists explore ways to regulate pyroptosis pathways in disease management. Despite numerous reviews detailing the relationship between pyroptosis and disease mechanisms, few delve into recent advancements in nanomaterials as a mechanism for modulating the pyroptosis pathway to mitigate disease effects. Therefore, there is an urgent need to fill this gap and elucidate the path for the use of this promising technology in the field of disease treatment. This review article delves into recent developments in nanomaterials for disease management through pyroptosis modulation, details the mechanisms by which drugs interact with pyroptosis pathways, and highlights the promise that nanomaterial research holds in driving forward disease treatment.
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Affiliation(s)
- Mengzhen Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, P. R. China
| | - Qinrui Fu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, 266021, P. R. China
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Li W, Tang T, Yao S, Zhong S, Fan Q, Zou T. Low-dose Lipopolysaccharide Alleviates Spinal Cord Injury-induced Neuronal Inflammation by Inhibiting microRNA-429-mediated Suppression of PI3K/AKT/Nrf2 Signaling. Mol Neurobiol 2024; 61:294-307. [PMID: 37605094 DOI: 10.1007/s12035-023-03483-9] [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: 05/09/2023] [Accepted: 07/05/2023] [Indexed: 08/23/2023]
Abstract
This study investigated the impact of low-dose lipopolysaccharide (LPS) on spinal cord injury (SCI) and the potential molecular mechanism. Rats were randomly assigned to four groups: Sham, SCI, SCI + LPS, and SCI + LPS + agomir. Allen's weight-drop method was used to establish an in vivo SCI model. The Basso Bcattie Bresnahan rating scale was employed to monitor locomotor function. An in vitro SCI model was constructed by subjecting PC12 cells to oxygen and glucose deprivation/ reoxygenation (OGD/R). Enzyme-linked immunosorbent assay (ELISA) was applied for the determination interleukin (IL)-1β and IL-6. The dual luciferase reporter assay was used to validate the targeting of microRNA (miR)-429 with PI3K. Immunohistochemical staining was used to assess the expression of PI3K, phosphorylated AKT and Nrf2 proteins. The Nrf2-downstream anti-oxidative stress proteins, OH-1 and NQO1, were detected by western blot assay. MiR-429 expression was detected by fluorescence in situ hybridization and real-time quantitative reverse transcription PCR. In vitro, low-dose LPS decreased miR-429 expression, activated PI3K/AKT/Nrf2, inhibited oxidative stress and inflammation, and attenuated SCI. MiR-429 was found to target and negatively regulate PI3K. Inhibition of miR-429 suppressed low-dose LPS-mediated oxidative stress and inflammation via activation of the PI3K/AKT/Nrf2 pathway. In vivo, miR-429 was detectable in neurons. Inhibition of miR-429 blocked low-dose LPS-mediated oxidative stress and inflammation via activation of the PI3K/AKT/Nrf2 pathway. Overall, low-dose LPS was found to alleviate SCI-induced neuronal oxidative stress and inflammatory response by down-regulating miR-429 to activate the PI3K/AKT/Nrf2 pathway.
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Affiliation(s)
- Weichao Li
- Department of Orthopedic Surgery, The First People's Hospital of Yunnan province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China
- Faculty of Medical Science, Kunming University of Science and Technology, Kunming, 650500, China
- Yunnan Key Laboratory of Digital Orthopaedics, Kunming, 650032, China
| | - Tao Tang
- Faculty of Medical Science, Kunming University of Science and Technology, Kunming, 650500, China
| | - Shaoping Yao
- Department of Orthopedic Surgery, The First People's Hospital of Yunnan province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China
- Yunnan Key Laboratory of Digital Orthopaedics, Kunming, 650032, China
| | - Shixiao Zhong
- Faculty of Medical Science, Kunming University of Science and Technology, Kunming, 650500, China
| | - Qianbo Fan
- Faculty of Medical Science, Kunming University of Science and Technology, Kunming, 650500, China
| | - Tiannan Zou
- Department of Orthopedic Surgery, The First People's Hospital of Yunnan province, Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650032, China.
- Yunnan Key Laboratory of Digital Orthopaedics, Kunming, 650032, China.
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