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Lei W, Yiming S, Qiang P, Xin C, Peng G, Baofeng Z. Unleashing the Neurotherapeutic Potential: The Crucial Role of miR-206-3p in Facilitating Hsp90aa1-Mediated Central Nervous System Injuries During Heat Stroke. Mol Neurobiol 2024:10.1007/s12035-024-04342-x. [PMID: 38995443 DOI: 10.1007/s12035-024-04342-x] [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: 12/15/2023] [Accepted: 07/01/2024] [Indexed: 07/13/2024]
Abstract
This study aims to explore the molecular mechanisms of miR-206-3p in regulating Hsp90aa1 and its involvement in the central nervous system (CNS) injury in heat stroke. Weighted gene co-expression network analysis (WGCNA) was performed on the GSE64778 dataset of heat stroke to identify module genes most closely associated with disease characteristics. Through the selection of key genes and predicting upstream miRNAs using RNAInter and miRWalk databases, the regulatory relationship between miR-206-3p and Hsp90aa1 was determined. Through in vitro experiments, various methods, including bioinformatics analysis, dual-luciferase reporter gene assay, RIP experiment, and RNA pull-down experiment, were utilized to validate this regulatory relationship. Furthermore, functional experiments, including CCK-8 assay to test neuron cell viability and flow cytometry to assess neuron apoptosis levels, confirmed the role of miR-206-3p. Transmission electron microscopy, real-time quantitative PCR, DCFH-DA staining, and ATP assay were employed to verify neuronal mitochondrial damage. Heat stroke rat models were constructed, and mNSS scoring and cresyl violet staining were utilized to assess neural functional impairment. Biochemical experiments were conducted to evaluate inflammation, brain water content, and histopathological changes in brain tissue using H&E staining. TUNEL staining was applied to detect neuronal apoptosis in brain tissue. RT-qPCR and Western blot were performed to measure gene and protein expression levels, further validating the regulatory relationship in vivo. Bioinformatics analysis indicated that miR-206-3p regulation of Hsp90aa1 may be involved in CNS injury in heat stroke. In vivo, animal experiments demonstrated that miR-206-3p and Hsp90aa1 co-localized in neurons of the rat hippocampal CA3 region, and with prolonged heat stress, the expression of miR-206-3p gradually increased while the expression of Hsp90aa1 gradually decreased. Further in vitro cellular mechanism validation and functional experiments confirmed that miR-206-3p could inhibit neuronal cell viability and promote apoptosis and mitochondrial damage by targeting Hsp90aa1. In vivo, experiments confirmed that miR-206-3p promotes CNS injury in heat stroke. This study revealed the regulatory relationship between miR-206-3p and Hsp90aa1, suggesting that miR-206-3p could regulate the expression of Hsp90aa1, inhibit neuronal cell viability, and promote apoptosis, thereby contributing to CNS injury in heat stroke.
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Affiliation(s)
- Wang Lei
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China
| | - Shen Yiming
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China
| | - Peng Qiang
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China
| | - Chu Xin
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China
| | - Gu Peng
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China
| | - Zhu Baofeng
- Department of Emergency Medicine, Nantong First People's Hospital, Nantong, 226001, Jiangsu, China.
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Du G, Yang Z, Wen Y, Li X, Zhong W, Li Z, Zhang S, Luo E, Ding H, Li W. Heat stress induces IL-1β and IL-18 overproduction via ROS-activated NLRP3 inflammasome: implication in neuroinflammation in mice with heat stroke. Neuroreport 2024; 35:558-567. [PMID: 38687900 DOI: 10.1097/wnr.0000000000002042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Heat stroke induced cerebral damage via neuroinflammation. This study aimed to approach whether heat stress would promote NOD-like receptor protein 3 (NLRP3) inflammasome via reactive oxygen species (ROS). The mice were randomly divided into the sham group, the heat stress group, and the heat stress + TEMPOL (ROS scavenger) group. And the NLRP3 -/- mice were applied and divided into the NLRP3 -/- + sham group and the NLRP3 -/- + heat stress group. Furthermore, the BV2 cells were divided into four groups following the intervention measures: the heat stress + TEMPOL group, the heat stress + Z-VAD-FMK (caspase-1 inhibitor) group, the heat stress group, and the control group. ROS levels were examined. The expression levels of NLRP3, caspase-1, IL-1β, and IL-18 were detected by western blotting and double immunofluorescence. We found that heat stress attack induced excessive ROS in microglia and subsequently activated NLRP3 inflammasome in both mice and BV2 cells. When ROS scavenged, the expression level of NLRP3 was downregulated. Furthermore, with NLRP3 inflammasome activation, the expression levels of caspase-1, IL-1β, and IL-18 were increased. In NLRP3 -/- mice, however, the caspase-1, IL-1β, and IL-18 were significantly declined. Further experiments showed that pretreatment of caspase-1 inhibitor decreased the expression levels of IL-1β and IL-18. These results suggest that heat stress attack caused neuroinflammation via excessive ROS activating the NLRP3 inflammasome in microglia cells.
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Affiliation(s)
- Guoqiang Du
- Department of Emergency Medicine, Luoding People's Hospital, Yunfu
| | - Zixi Yang
- College of Continuing Education, Guangdong Medical University, Zhanjiang
| | - Yin Wen
- Department of Critical Care Medicine
| | - Xusheng Li
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou
| | | | - Zhuo Li
- Department of Critical Care Medicine
| | | | - Ensi Luo
- Department of Endocrinology, Binhaiwan Central Hospital of Dongguan, Dongguan Hospital Affiliated to Medical College of Jinan University, Dongguan, China
| | - Hongguang Ding
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou
| | - Weifeng Li
- Department of Emergency Medicine, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou
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Wang L, Shen YM, Chu X, Peng Q, Cao ZY, Cao H, Jia HY, Zhu BF, Zhang Y. Molecular Investigation and Preliminary Validation of Candidate Genes Associated with Neurological Damage in Heat Stroke. Mol Neurobiol 2024:10.1007/s12035-024-03968-1. [PMID: 38296899 DOI: 10.1007/s12035-024-03968-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/16/2024] [Indexed: 02/02/2024]
Abstract
Heat stroke (HS) is a severe medical condition characterized by a systemic inflammatory response that may precipitate multi-organ dysfunction, with a particular predilection for inducing profound central nervous system impairments. We aim to employ bioinformatics techniques for the retrieval and analysis of genes associated with heat stroke-induced neurological damage. We performed a comprehensive analysis of the GSE64778 dataset from the Sequence Read Archive, resulting in the identification of 1178 significantly differentially expressed genes (DEGs). We retrieved 2914 genes associated with heat stroke from the GeneCards database and 2377 genes associated with heat stroke from the Comparative Toxicogenomics Database (CTD). The intersection of the top 300 DEGs in the GSE64778 dataset intersected with the search results of GeneCards and CTD, yielding 25 final candidates for DEGs associated with heat stroke. Gene Ontology functional annotation results indicated that the target genes were mainly involved in apoptosis, stress response, and negative regulation of cellular processes and function in processes such as protein dimerization and protein binding. The Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis revealed a predominant enrichment of candidate target genes within the PI3K-AKT signaling pathway. Subsequent protein-protein interaction network analysis highlighted HSP90aa1 as a central gene, indicating its pivotal role by possessing the highest number of edges among the genes enriched in the PI3K-AKT signaling pathway. Quantitative reverse transcription-polymerase chain reaction analysis performed on blood samples from patients validated the expression of Hsp90aa1 in individuals exhibiting early neurological damage in HS, consistent with the findings from the mRNA bioinformatics analysis. Additionally, the bioinformatics analysis of the upstream microRNAs (miRNAs) regulating HSP90aa1 and the target miRNAs associated with candidate long non-coding RNAs (lncRNAs) identified three lncRNAs, eight miRNAs, and one mRNA in the regulatory network. The DIANA Tools database and algorithms were employed for pathway enrichment and correlation analysis, revealing a significant association between LOC102547734 and MIR-206-3p, with the latter being identified as a target binding site Moreover, the analysis unveiled a correlation between MIR-206-3p and HSP90aa1, implicating the latter as a potential target binding site within the regulatory network.
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Affiliation(s)
- Lei Wang
- Department of Emergency Center, Second Affiliated Hospital of Nantong University, No. 6 North, Child Lane Road, Nantong, China
| | - Yi-Ming Shen
- Department of Emergency Center, Second Affiliated Hospital of Nantong University, No. 6 North, Child Lane Road, Nantong, China
| | - Xin Chu
- Department of Emergency Center, Second Affiliated Hospital of Nantong University, No. 6 North, Child Lane Road, Nantong, China
| | - Qiang Peng
- Department of Emergency Center, Second Affiliated Hospital of Nantong University, No. 6 North, Child Lane Road, Nantong, China
| | - Zhi-Yong Cao
- Department of Neurology, Second Affiliated Hospital of Nantong University, No. 6, North Child Lane Road, Nantong, China
| | - Hui Cao
- Department of Rehabilitation, Second Affiliated Hospital of Nantong University, No. 6, North Child Lane Road, Nantong, China
| | - Han-Yu Jia
- Research and Education Sector, Second Affiliated Hospital of Nantong University, No. 6, North Child Lane Road, Nantong, China
| | - Bao-Feng Zhu
- Department of Emergency Center, Second Affiliated Hospital of Nantong University, No. 6 North, Child Lane Road, Nantong, China.
| | - Yi Zhang
- Research and Education Sector, Second Affiliated Hospital of Nantong University, No. 6, North Child Lane Road, Nantong, China.
- Department of Neurosurgery, Second Affiliated Hospital of Nantong University, No. 6, North Child Lane Road, Nantong, China.
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Jin J, Chen M, Wang H, Li S, Ma L, Wang B. Schizandrin A attenuates early brain injury following subarachnoid hemorrhage through suppressing neuroinflammation. Mol Biol Rep 2024; 51:236. [PMID: 38285214 DOI: 10.1007/s11033-023-08956-7] [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: 08/02/2023] [Accepted: 11/17/2023] [Indexed: 01/30/2024]
Abstract
BACKGROUND Early brain injury (EBI) is the vital factor in determining the outcome of subarachnoid hemorrhage (SAH). Schizandrin A (Sch A), the bioactive ingredient extracted from Schisandra chinensis, has been proved to exert beneficial effects in multiple human diseases. However, the effect of Sch A on SAH remains unknown. The current study was designed to explored role and mechanism of Sch A in the pathophysiological process of EBI following SAH. METHOD A total of 74 male C57BL/6 J mice were subjected to endovascular perforation to establish the SAH model. Different dosages of Sch A were administrated post-modeling. The post-modeling assessments included neurological test, brain water content, RT-PCR, immunofluorescence, Nissl staining. Oxygenated hemoglobin was introduced into microglia to establish a SAH model in vitro. RESULT Sch A significantly alleviated SAH-induced brain edema and neurological impairment. Moreover, application of Sch A remarkably inhibited SAH-induced neuroinflammation, evidenced by the decreased microglial activation and downregulated TNF-α, IL-1β and IL-6 and expression. Additionally, Sch A, both in vivo and in vitro, protected neurons against SAH-induced inflammatory injury. Mechanismly, administration of Sch A inhibited miR-155/NF-κB axis and attenuated neuroinflammation, as well as alleviating neuronal injury. CONCLUSION Our data suggested that Sch A could attenuated EBI following SAH via modulating neuroinflammation. The anti-inflammatory effect was exerted, at least partly through the miR-155/NF-κB axis, which may shed light on a possible therapeutic target for SAH.
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Affiliation(s)
- Jianxiang Jin
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China
| | - Maosong Chen
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China
| | - Hongcai Wang
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China
| | - Shiwei Li
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China
| | - Lei Ma
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China
| | - Boding Wang
- Department of Neurosurgery, Li Huili Hospital, Ningbo Medical Center, Xingning Road 57th, Yinzhou District, Ningbo, 315000, China.
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Chen M, Zhang H, Chu YH, Tang Y, Pang XW, Qin C, Tian DS. Microglial autophagy in cerebrovascular diseases. Front Aging Neurosci 2022; 14:1023679. [PMID: 36275005 PMCID: PMC9582432 DOI: 10.3389/fnagi.2022.1023679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 09/20/2022] [Indexed: 11/25/2022] Open
Abstract
Microglia are considered core regulators for monitoring homeostasis in the brain and primary responders to central nervous system (CNS) injuries. Autophagy affects the innate immune functions of microglia. Recently some evidence suggests that microglial autophagy is closely associated with brain function in both ischemic stroke and hemorrhagic stroke. Herein, we will discuss the interaction between autophagy and other biological processes in microglia under physiological and pathological conditions and highlight the interaction between microglial metabolism and autophagy. In the end, we focus on the effect of microglial autophagy in cerebrovascular diseases.
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