1
|
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.
Collapse
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
| |
Collapse
|
2
|
Dong Q, Fu H, Jiang H. The role of exosome-shuttled miRNAs in heavy metal-induced peripheral tissues and neuroinflammation in Alzheimer's disease. Biomed Pharmacother 2024; 176:116880. [PMID: 38850652 DOI: 10.1016/j.biopha.2024.116880] [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: 03/17/2024] [Revised: 05/11/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024] Open
Abstract
Heavy metal-induced neuroinflammation is a significant pathophysiologic mechanism in Alzheimer's disease (AD). Microglia-mediated neuroinflammation plays a crucial role in the pathogenesis of AD. Multiple miRNAs are differentially expressed in peripheral tissues after heavy metal exposure, and increasing evidence suggests that they are involved in AD progression by regulating microglial homeostasis. Exosomes, which are capable of loading miRNAs and crossing the bloodbrain barrier, serve as mediators of communication between peripheral tissues and the brain. In this review, we summarize the current evidence on the link between miRNAs in peripheral tissues and neuroinflammation in AD after heavy metal exposure and propose a role for miRNAs in the microglial neurodegenerative phenotype (MGnD) of AD. This study will help to elucidate the link between peripheral tissue damage and MGnD-mediated neuroinflammation in AD after heavy metal exposure. Additionally, we summarize the regulatory effects of natural compounds on peripheral tissue-derived miRNAs, which could be potential therapeutic targets for natural compounds to regulate peripheral tissue-derived exosomal miRNAs to ameliorate heavy metal-induced MGnD-mediated neuroinflammation in patients with AD after heavy metal exposure.
Collapse
Affiliation(s)
- Qing Dong
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China.
| | - Huanyong Fu
- Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China.
| | - Hong Jiang
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention, Ministry of Education, China Medical University, Shenyang, Liaoning 110122, China; The Key Laboratory of Liaoning Province on Toxic and Biological Effects of Arsenic, Shenyang, Liaoning 110122, China; Department of Health Laboratory Technology, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China.
| |
Collapse
|
3
|
Huang S, Zhang Y, Shu H, Liu W, Zhou X, Zhou X. Advances of the MAPK pathway in the treatment of spinal cord injury. CNS Neurosci Ther 2024; 30:e14807. [PMID: 38887853 PMCID: PMC11183187 DOI: 10.1111/cns.14807] [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: 02/05/2024] [Revised: 04/23/2024] [Accepted: 05/27/2024] [Indexed: 06/20/2024] Open
Abstract
Spinal cord injury (SCI) represents a complex pathology within the central nervous system (CNS), leading to severe sensory and motor impairments. It activates various signaling pathways, notably the mitogen-activated protein kinase (MAPK) pathway. Present treatment approaches primarily focus on symptomatic relief, lacking efficacy in addressing the underlying pathophysiological mechanisms. Emerging research underscores the significance of the MAPK pathway in neuronal differentiation, growth, survival, axonal regeneration, and inflammatory responses post-SCI. Modulating this pathway post-injury has shown promise in attenuating inflammation, minimizing apoptosis, alleviating neuropathic pain, and fostering neural regeneration. Given its pivotal role, the MAPK pathway emerges as a potential therapeutic target in SCI management. This review synthesizes current knowledge on SCI pathology, delineates the MAPK pathway's characteristics, and explores its dual roles in SCI pathology and therapeutic interventions. Furthermore, it addresses the existing challenges in MAPK research in the context of SCI, proposing solutions to overcome these hurdles. Our aim is to offer a comprehensive reference for future research on the MAPK pathway and SCI, laying the groundwork for targeted therapeutic strategies.
Collapse
Affiliation(s)
- Shixue Huang
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
| | - Yinuo Zhang
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
| | - Haoming Shu
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
| | - Wei Liu
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
| | - Xin Zhou
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
| | - Xuhui Zhou
- Department of Orthopedics, Changzheng HospitalSecond Affiliated Hospital of Naval Medical UniversityShanghaiChina
- Translational Research Centre of Orthopedics, Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| |
Collapse
|
4
|
Qi G, Li S, Jiang Q, Yu Z, Peng Z, Li Q, Qi W, Guo M. Network pharmacology analysis and experimental validation to explore the effect and mechanism of tetramethylpyrazine for spinal cord injury. J Chem Neuroanat 2024; 136:102386. [PMID: 38176475 DOI: 10.1016/j.jchemneu.2023.102386] [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: 09/10/2023] [Revised: 12/29/2023] [Accepted: 12/29/2023] [Indexed: 01/06/2024]
Abstract
OBJECTIVE To investigate the effect and mechanism of Tetramethylpyrazine (TMP) in treating Spinal Cord Injury (SCI) using network pharmacology analysis and animal experiments. METHODS This study was based on public databases, including PharmMapper, BATMAN-TCM, and STRING, as well as KEGG pathway analysis and other methods of network pharmacology were used to preliminarily explore the molecular mechanism of TMP in the treatment of SCI. Using a mouse SCI compression injury model, the efficacy of TMP was evaluated, and the expression of predictive targets on the PI3K/AKT and MAPK signaling pathways was measured using Western blotting and q-PCR. RESULTS Network pharmacology analysis showed that TMP may exert therapeutic effects through the MAPK and PI3K/AKT signaling pathways. In animal experimental validation studies, it was shown that after treatment with TMP, the hind limb motor function scores and ramp test scores of the TMP-treated mice improved significantly. HE staining showed that after treatment with TMP, cavities decreased, fewer glial cells proliferated, and fewer inflammatory cells infiltrated; Nielsen staining showed less neuronal loss. Western blot studies showed that compared with the model group, expression of RAS, ERK1/2, RAF1, PI3K, and p-AKT proteins in the spinal cord tissue of mice treated with high-dose TMP was significantly lower. Accordingly, q-PCR studies showed that compared with the model group, the expression levels of RAS, ERK1/2, RAF1, PI3K, and p-AKT genes in the spinal cords of mice in the high-dose TMP group were significantly lower. CONCLUSION TMP exhibits a good neuroprotective effect after SCI, which may be related to inhibition of the MAPK and PI3K/AKT signaling pathways.
Collapse
Affiliation(s)
- Guodong Qi
- Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Orthopedics Department, Chongqing, China
| | - Shujun Li
- Chongqing Medical University, Chongqing Key Laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases, Chongqing, China
| | - Qiong Jiang
- Chongqing Medical University, Chongqing Key Laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases, Chongqing, China
| | - Zhijuan Yu
- Chongqing Erlang Community Health Service Center, Clinical Laboratory, Chongqing, China
| | - Zhenggang Peng
- Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Orthopedics Department, Chongqing, China
| | - Qiurui Li
- Chongqing Medical University, Chongqing Key Laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases, Chongqing, China
| | - Wei Qi
- Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Orthopedics Department, Chongqing, China.
| | - Mingjun Guo
- Chongqing Orthopedic Hospital of Traditional Chinese Medicine, Orthopedics Department, Chongqing, China.
| |
Collapse
|
5
|
Shan W, Wang J, Cheng R, Xuan Y, Yin Z. Erythropoietin alleviates astrocyte pyroptosis by targeting the miR-325-3p/Gsdmd axis in rat spinal cord injury. Inflammopharmacology 2024; 32:523-536. [PMID: 37578618 DOI: 10.1007/s10787-023-01311-z] [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: 03/31/2023] [Accepted: 07/27/2023] [Indexed: 08/15/2023]
Abstract
BACKGROUND Neuroinflammation plays an important role in spinal cord injury (SCI), and an increasing number of studies have focused on the role of astrocytes in neuroinflammation. Pyroptosis is an inflammation-related form of programmed cell death, and neuroinflammation induced by astrocytes in the form of pyroptosis has been widely reported in many central nervous system diseases. Recent studies have found that erythropoietin has significant anti-inflammatory and neuroprotective effects in SCI; however, it has not been reported whether erythropoietin can reduce neuroinflammation by inhibiting neural cell pyroptosis in SCI. METHODS A GEO dataset (GSE153720) was used to analyse the expression of pyroptosis-related genes in sham astrocytes and astrocytes 7 days, 1 month and 3 months after SCI. TargetScan and miRDB databases were used to predict the miRNA that could bind to the 3'UTR of rat Gsdmd. Primary rat spinal astrocytes were used for in vitro experiments, and the modified version of Allen's method was used to establish the rat SCI model. Western blotting, quantitative real-time polymerase chain reaction, flow cytometry, immunofluorescence, lactate dehydrogenase release assay and propidium iodide staining were used to detect the pyroptosis phenotype. A dual luciferase reporter gene assay was used to verify that miR-325-3p can bind to the 3'UTR of Gsdmd. RESULTS We found that pyroptosis-related genes mediated by the canonical NLRP3 inflammasome were highly expressed in astrocytes in an SCI animal model by bioinformatic analysis. We also observed that erythropoietin could reduce astrocyte pyroptosis in vivo and in vitro. In addition, we predicted miRNAs that regulate Gsdmd, the pyroptosis executor, and verified that erythropoietin inhibits astrocyte pyroptosis in SCI through the miR-325-3p/Gsdmd axis. CONCLUSIONS We demonstrated that erythropoietin can inhibit astrocyte pyroptosis through the miR-325-3p/Gsdmd axis. This study is expected to provide a new mechanism for erythropoietin in the treatment of SCI and a more reliable theoretical basis for clinical research.
Collapse
Affiliation(s)
- Wenshan Shan
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jiawei Wang
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Rui Cheng
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yong Xuan
- Department of Orthopaedics, The Second People's Hospital of Hefei, Hefei, Anhui, China.
- Department of Orthopaedics, Hefei Hospital Affiliated to Anhui Medical University, Hefei, Anhui, China.
| | - Zongsheng Yin
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
| |
Collapse
|
6
|
Wang R, Bai J. Pharmacological interventions targeting the microcirculation following traumatic spinal cord injury. Neural Regen Res 2024; 19:35-42. [PMID: 37488841 PMCID: PMC10479866 DOI: 10.4103/1673-5374.375304] [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: 11/06/2022] [Revised: 03/08/2023] [Accepted: 04/07/2023] [Indexed: 07/26/2023] Open
Abstract
Traumatic spinal cord injury is a devastating disorder characterized by sensory, motor, and autonomic dysfunction that severely compromises an individual's ability to perform activities of daily living. These adverse outcomes are closely related to the complex mechanism of spinal cord injury, the limited regenerative capacity of central neurons, and the inhibitory environment formed by traumatic injury. Disruption to the microcirculation is an important pathophysiological mechanism of spinal cord injury. A number of therapeutic agents have been shown to improve the injury environment, mitigate secondary damage, and/or promote regeneration and repair. Among them, the spinal cord microcirculation has become an important target for the treatment of spinal cord injury. Drug interventions targeting the microcirculation can improve the microenvironment and promote recovery following spinal cord injury. These drugs target the structure and function of the spinal cord microcirculation and are essential for maintaining the normal function of spinal neurons, axons, and glial cells. This review discusses the pathophysiological role of spinal cord microcirculation in spinal cord injury, including its structure and histopathological changes. Further, it summarizes the progress of drug therapies targeting the spinal cord microcirculation after spinal cord injury.
Collapse
Affiliation(s)
- Rongrong Wang
- Department of Spine and Spinal Cord Surgery, Beijing Bo’ai Hospital, China Rehabilitation Research Center, Beijing, China
- School of Rehabilitation Medicine, Capital Medical University, Beijing, China
| | - Jinzhu Bai
- Department of Spine and Spinal Cord Surgery, Beijing Bo’ai Hospital, China Rehabilitation Research Center, Beijing, China
- School of Rehabilitation Medicine, Capital Medical University, Beijing, China
| |
Collapse
|
7
|
Shen W, Liu Q, Li C, Abula M, Yang Z, Wang Z, Cai J, Kong X. Exploration of the effect and potential mechanism of quercetin in repairing spinal cord injury based on network pharmacology and in vivo experimental verification. Heliyon 2023; 9:e20024. [PMID: 37809922 PMCID: PMC10559748 DOI: 10.1016/j.heliyon.2023.e20024] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/19/2023] [Accepted: 09/08/2023] [Indexed: 10/10/2023] Open
Abstract
Spinal cord injury (SCI) is a highly complex neurological disease, but there is no effective repair method. Quercetin is a flavonol drug and has a variety of biological activities, such as scavenging oxygen free radicals in the body to resist oxidation, inhibiting inflammation, and so on. In this study, quercetin was firstly demonstrated to reduce tissue damage, promote neuron survival and repair motor function after SCI in rats through in vivo experiments. Then, 293 potential targets of quercetin repair for SCI were predicted by network pharmacology. GO analysis revealed that the biological processes of potential targets focused mainly on signal transduction, negative regulation of the apoptotic process, protein phosphorylation, drug response, and so on. Similarly, KEGG analysis suggested that these potential targets were involved in cell growth regulation, differentiation, apoptosis, and a few metabolic pathways. PPI network analysis predicted that the key genes were EP300, CREBBP, SRC, HSP90AA1, TP53, PIK3R1, EGFR, ESR1, and CBL. Further, the molecular docking showed that quercetin binds well with these proteins. Finally, RT-qPCR and Western blotting experiments verified that quercetin downregulated the expression levels of PIK3R1 and EGFR. It is suggested that quercetin can repair SCI in rats through PI3K-AKT signaling pathway and EGFR/MAPK pathway, which may provide a new theoretical basis for the repair of spinal cord injury.
Collapse
Affiliation(s)
- Wenyuan Shen
- International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Department of Orthopedics, The Second Hospital of Shandong University, Cheeloo College of Medicine, Shandong University, 247 Beiyuan Street, Jinan, Shandong, China
- Orthopedic Research Center of Shandong University &Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Quan Liu
- International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Chuanhao Li
- International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Muhetidier Abula
- International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
- Department of Orthopedics, Hotan Prefecture People's Hospital, Hotan, Xinjiang, 848000, China
| | - Zibo Yang
- Tianjin Medicine and Health Research Center, Tianjin Institute of Medical & Pharmaceutical Sciences, Tianjin, 300020, China
| | - Zhishuo Wang
- International Science and Technology Cooperation Base of Spinal Cord Injury, Tianjin Key Laboratory of Spine and Spinal Cord, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, China
| | - Jun Cai
- Tianjin Medicine and Health Research Center, Tianjin Institute of Medical & Pharmaceutical Sciences, Tianjin, 300020, China
| | - Xiaohong Kong
- Orthopedic Research Center of Shandong University &Advanced Medical Research Institute, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| |
Collapse
|
8
|
Wang Z, Dai Z, Zhang H, Zhang N, Liang X, Peng L, Zhang J, Liu Z, Peng Y, Cheng Q, Liu Z. Comprehensive analysis of pyroptosis-related gene signatures for glioblastoma immune microenvironment and target therapy. Cell Prolif 2023; 56:e13376. [PMID: 36681858 PMCID: PMC9977674 DOI: 10.1111/cpr.13376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/25/2022] [Accepted: 11/16/2022] [Indexed: 01/23/2023] Open
Abstract
Glioblastoma (GBM) is a malignant brain tumour, but its subtypes (mesenchymal, classical, and proneural) show different prognoses. Pyroptosis is a programmed cell death relating to tumour progression, but its association with GBM is poorly understood. In this work, we collected 73 GBM samples (the Xiangya GBM cohort) and reported that pyroptosis involves tumour-microglia interaction and tumour response to interferon-gamma. GBM samples were grouped into different subtypes, cluster 1 and cluster 2, based on pyroptosis-related genes. Cluster 1 samples manifested a worse prognosis and had a more complicated immune landscape than cluster 2 samples. Single-cell RNA-seq data analysis supported that cluster 1 samples respond to interferon-gamma more actively. Moreover, the machine learning algorithm screened several potential compounds, including nutlin-3, for cluster 1 samples as a novel treatment. In vitro experiments supported that cluster 1 cell line, T98G, is more sensitive to nutlin-3 than cluster 2 cell line, LN229. Nutlin-3 can trigger oxidative stress by increasing DHCR24 expression. Moreover, pyroptosis-resistant genes were upregulated in LN229, which may participate against nutlin-3. Therefore, we hypothesis that GBM may be able to upregulate pyroptosis resistant related genes to against nutlin-3-triggered cell death. In summary, we conclude that pyroptosis highly associates with GBM progression, tumour immune landscape, and tumour response to nutlin-3.
Collapse
Affiliation(s)
- Zeyu Wang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina,MRC Centre for Regenerative Medicine, Institute for Regeneration and RepairUniversity of EdinburghEdinburghUK
| | - Ziyu Dai
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina
| | - Hao Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina
| | - Nan Zhang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,One‐Third Lab, College of Bioinformatics Science and TechnologyHarbin Medical UniversityHarbinChina
| | - Xisong Liang
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina
| | - Luo Peng
- Department of Oncology, Zhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Jian Zhang
- Department of Interventional RadiologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Zaoqu Liu
- Department of Interventional RadiologyThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouChina
| | - Yun Peng
- Department of Geriatrics, Xiangya HospitalCentral South UniversityChangshaChina,Teaching and Research Section of Clinical NursingXiangya Hospital of Central South UniversityChangshaChina
| | - Quan Cheng
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina
| | - Zhixiong Liu
- Department of Neurosurgery, Xiangya HospitalCentral South UniversityChangshaChina,National Clinical Research Center for Geriatric DisordersChangshaChina
| |
Collapse
|
9
|
Jayaswamy PK, Vijaykrishnaraj M, Patil P, Alexander LM, Kellarai A, Shetty P. Implicative role of epidermal growth factor receptor and its associated signaling partners in the pathogenesis of Alzheimer's disease. Ageing Res Rev 2023; 83:101791. [PMID: 36403890 DOI: 10.1016/j.arr.2022.101791] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 11/12/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
Abstract
Epidermal growth factor receptor (EGFR) plays a pivotal role in early brain development, although its expression pattern declines in accordance with the maturation of the active nervous system. However, recurrence of EGFR expression in brain cells takes place during neural functioning decline and brain atrophy in order to maintain the homeostatic neuronal pool. As a consequence, neurotoxic lesions such as amyloid beta fragment (Aβ1-42) formed during the alternative splicing of amyloid precursor protein in Alzheimer's disease (AD) elevate the expression of EGFR. This inappropriate peptide deposition on EGFR results in the sustained phosphorylation of the downstream signaling axis, leading to extensive Aβ1-42 production and tau phosphorylation as subsequent pathogenesis. Recent reports convey that the pathophysiology of AD is correlated with EGFR and its associated membrane receptor complex molecules. One such family of molecules is the annexin superfamily, which has synergistic relationships with EGFR and is known for membrane-bound signaling that contributes to a variety of inflammatory responses. Besides, Galectin-3, tissue-type activated plasminogen activator, and many more, which lineate the secretion of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-18) result in severe neuronal loss. Altogether, we emphasized the perspectives of cellular senescence up-regulated by EGFR and its associated membrane receptor molecules in the pathogenesis of AD as a target for a therapeutical alternative to intervene in AD.
Collapse
Affiliation(s)
- Pavan K Jayaswamy
- Central Research Laboratory, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India
| | - M Vijaykrishnaraj
- Central Research Laboratory, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India
| | - Prakash Patil
- Central Research Laboratory, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India
| | - Lobo Manuel Alexander
- Department of Neurology, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India
| | - Adithi Kellarai
- Department of General Medicine, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India
| | - Praveenkumar Shetty
- Central Research Laboratory, KS. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India; Department of Biochemistry, K.S. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore 575018, Karnataka, India.
| |
Collapse
|
10
|
Qiu M, Xu E, Zhan L. Epigenetic Regulations of Microglia/Macrophage Polarization in Ischemic Stroke. Front Mol Neurosci 2021; 14:697416. [PMID: 34707480 PMCID: PMC8542724 DOI: 10.3389/fnmol.2021.697416] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/26/2021] [Indexed: 01/04/2023] Open
Abstract
Ischemic stroke is one of the leading causes of death and disability worldwide. Microglia/macrophages (MMs)-mediated neuroinflammation contributes significantly to the pathological process of ischemic brain injury. Microglia, serving as resident innate immune cells in the central nervous system, undergo pro-inflammatory phenotype or anti-inflammatory phenotype in response to the microenvironmental changes after cerebral ischemia. Emerging evidence suggests that epigenetics modifications, reversible modifications of the phenotype without changing the DNA sequence, could play a pivotal role in regulation of MM polarization. However, the knowledge of the mechanism of epigenetic regulations of MM polarization after cerebral ischemia is still limited. In this review, we present the recent advances in the mechanisms of epigenetics involved in regulating MM polarization, including histone modification, non-coding RNA, and DNA methylation. In addition, we discuss the potential of epigenetic-mediated MM polarization as diagnostic and therapeutic targets for ischemic stroke. It is valuable to identify the underlying mechanisms between epigenetics and MM polarization, which may provide a promising treatment strategy for neuronal damage after cerebral ischemia.
Collapse
Affiliation(s)
- Meiqian Qiu
- Institute of Neurosciences and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University and Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - En Xu
- Institute of Neurosciences and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University and Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| | - Lixuan Zhan
- Institute of Neurosciences and Department of Neurology of the Second Affiliated Hospital of Guangzhou Medical University and Key Laboratory of Neurogenetics and Channelopathies of Guangdong Province and the Ministry of Education of China, Guangzhou, China
| |
Collapse
|
11
|
Li ZW, Zhao JJ, Li SY, Cao TT, Wang Y, Guo Y, Xi GJ. Blocking the EGFR/p38/NF-κB signaling pathway alleviates disruption of BSCB and subsequent inflammation after spinal cord injury. Neurochem Int 2021; 150:105190. [PMID: 34537318 DOI: 10.1016/j.neuint.2021.105190] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 10/20/2022]
Abstract
Epidermal growth factor receptor (EGFR) activation is involved in blood spinal cord barrier (BSCB) disruption and secondary injury after spinal cord injury (SCI). However, the underlying mechanisms of EGFR activation mediating BSCB disruption and secondary injury after SCI remain unclear. An in vitro model of oxygen and glucose deprivation/reoxygenation (OGD/R) induced BSCB damage and in vivo rat SCI model were employed to define the role of EGFR/p38/NF-κB signal pathway activation and its induced inflammatory injury in main cellular components of BSCB. Genetic regulation (lentivirus delivered shRNA and overexpression system) or chemical intervention (agonist or inhibitor) were applied to activate or inactivate EGFR and p38 in astrocytes and microvascular endothelial cells (MEC) under which conditions, the expression of pro-inflammatory factors (TNF-α, iNOS, COX-2, and IL-1β), tight junction (TJ) protein (ZO-1 and occludin), nuclear translocation of NF-κB and permeability of BSCB were analyzed. The pEGFR was increased in astrocytes and MEC which induced the activation of EGFR and p38 and NF-κB nuclear translocation. The activation of EGFR and p38 increased the TNF-α, iNOS, COX-2, and IL-1β responsible for the inflammatory injury and reduced the ZO-1 and occludin which caused BSCB disruption. While EGFR or p38 inactivation inhibited NF-κB nuclear translocation, and markedly attenuated the production of pro-inflammatory factors and the loss of TJ protein. This study suggests that the EGFR activation in main cellular components of BSCB after SCI mediates BSCB disruption and secondary inflammatory injury via the EGFR/p38/NF-κB pathway.
Collapse
Affiliation(s)
- Zai-Wang Li
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, PR China.
| | - Jing-Jing Zhao
- Center of Clinical Research, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, 214023, PR China
| | - Su-Ya Li
- Department of Neurology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, PR China
| | - Ting-Ting Cao
- Department of Neurology, Yancheng First People's Hospital, Yancheng, 224001, PR China
| | - Yi Wang
- University of Traditional Chinese Medicine, Kunming, 650500, PR China; Otolaryngological Department, Yunnan Province Traditional Chinese Medicine, Hospital of Yunnan University of Traditional Chinese Medicine, Kunming, 650500, PR China
| | - Yi Guo
- Department of Neurology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, PR China
| | - Guang-Jun Xi
- Department of Neurology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, PR China.
| |
Collapse
|
12
|
Morphine promotes microglial activation by upregulating the EGFR/ERK signaling pathway. PLoS One 2021; 16:e0256870. [PMID: 34520454 PMCID: PMC8439491 DOI: 10.1371/journal.pone.0256870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 08/17/2021] [Indexed: 11/20/2022] Open
Abstract
Although they represent the cornerstone of analgesic therapy, opioids, such as morphine, are limited in efficacy by drug tolerance, hyperalgesia and other side effects. Activation of microglia and the consequent production of proinflammatory cytokines play a key pathogenic role in morphine tolerance, but the exact mechanisms are not well understood. This study aimed to investigate the regulatory mechanism of epidermal growth factor receptor (EGFR) on microglial activation induced by morphine in mouse microglial BV-2 cells. In this research, BV-2 cells were stimulated with morphine or pretreated with AG1478 (an inhibitor of EGFR). Expression levels of cluster of differentiation molecule 11b (CD11b), EGFR, and phospho-EGFR were detected by immunofluorescence staining. Cell signaling was assayed by Western blot. The migration ability of BV-2 cells was tested by Transwell assay. The production of interleukin-1beta (IL-1β) and tumor necrosis factor-alpha (TNF-α) in the cell supernatant was determined by ELISA. We observed that the expression of CD11b induced by morphine was increased in a dose- and time- dependent manner in BV-2 cells. Phosphorylation levels of EGFR and ERK1/2, migration of BV-2 cells, and production of IL-1β and TNFα were markedly enhanced by morphine treatment. The activation, migration, and production of proinflammatory cytokines in BV-2 cells were inhibited by blocking the EGFR signaling pathway with AG1478. The present study demonstrated that the EGFR/ERK signaling pathway may represent a novel pharmacological strategy to suppress morphine tolerance through attenuation of microglial activation.
Collapse
|
13
|
Gu E, Pan W, Chen K, Zheng Z, Chen G, Cai P. LncRNA H19 Regulates Lipopolysaccharide (LPS)-Induced Apoptosis and Inflammation of BV2 Microglia Cells Through Targeting miR-325-3p/NEUROD4 Axis. J Mol Neurosci 2020; 71:1256-1265. [PMID: 33205379 DOI: 10.1007/s12031-020-01751-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 11/02/2020] [Indexed: 11/26/2022]
Abstract
Spinal cord injury (SCI) is a devastating traumatic event worldwide. Work from the past decade has highlighted the key involvement of long non-coding RNAs (lncRNAs) in SCI. Nevertheless, the molecular action of lncRNA H19 in SCI is still not fully understood. The levels of H19, microRNA (miR)-325-3p, and neuronal differentiation 4 (NEUROD4) were determined by quantitative real-time polymerase chain reaction (qRT-PCR) or western blot. Flow cytometry was performed to assess cell apoptosis. The levels of tumor necrosis factor-α (TNF-α), interleukin 1β (IL-1β), and IL-6 were detected using the enzyme-linked immunosorbent assay (ELISA). Targeted relationships among H19, miR-325-3p, and NEUROD4 were confirmed by dual-luciferase reporter, RNA immunoprecipitation (RIP), or RNA pull-down assays. Our data showed that H19 level was overexpressed in lipopolysaccharide (LPS)-treated BV2 cells. H19 silencing alleviated LPS-evoked cell apoptosis and inflammation. Mechanistically, H19 in BV2 cells directly targeted miR-325-3p, and NEUROD4 was a direct target of miR-325-3p. Moreover, miR-325-3p was a functional target of H19 in regulating cell apoptosis and inflammation induced by LPS. Enforced expression of miR-325-3p relieved LPS-evoked cell apoptosis and inflammation through reducing NEUROD4. Furthermore, H19 in BV2 cells regulated NEUROD4 expression through targeting miR-325-3p. Our results identified that the silencing of H19 attenuated LPS-evoked microglia cell apoptosis and inflammation after SCI at least partially through targeting the miR-325-3p/NEUROD4 axis, highlighting a novel approach for SCI management.
Collapse
Affiliation(s)
- Enyi Gu
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China
| | - Weikun Pan
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China
| | - Kangyao Chen
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China
| | - Zhong Zheng
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China
| | - Guoling Chen
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China
| | - Pengde Cai
- Department of Orthopedics, Fuzhou Second Hospital Affiliated To Xiamen University, Cangshan District, 47 Shangteng Road, Fuzhou, 350007, Fujian, China.
| |
Collapse
|
14
|
Yi S, Zhang C, Li N, Fu Y, Li H, Zhang J. miR-325-3p Protects Neurons from Oxygen-Glucose Deprivation and Reoxygenation Injury via Inhibition of RIP3. Dev Neurosci 2020; 42:83-93. [PMID: 33130681 DOI: 10.1159/000509108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE Recent reports have corroborated that micro-RNAs (miRs) are related to the pathological changes of cerebral ischemia-reperfusion (CIR) induced injury. This work aimed to unearth the role and potential mechanism of miR-325-3p in regulating neuronal survival in CIR injury. METHODS To conduct this investigation, we established an in vitro model of CIR injury by subjecting neurons to oxygen-glucose deprivation and reoxygenation (OGD/R). Gain and loss of function of miR-325-3p and receptor-interacting serine-threonine kinase 3 (RIP3) in neurons were performed to observe its effect on cell apoptosis and the release of lactate dehydrogenase. The levels of miR-325-3p and RIP3 in neurons were detected by qRT-PCR. Western blot was employed to inspect the levels of caspase3, Bax, and Bcl-2, as well as p38 and JNK phosphorylation. The relationship between miR-325-3p and RIP3 was detected by TargetScan and validated by dual-luciferase reporter assay. RESULTS Firstly, miR-325-3p expression was obviously downregulated while RIP3 expression was upregulated in neurons following OGD/R treatment. Overexpressed miR-325-3p or downexpressed RIP3 ameliorated OGD/R-induced neuronal injury. Besides, RIP3 was a direct target mRNA of miR-325-3p. Additionally, Western blot revealed the mitogen-activated protein kinase (MAPK) pathway was involved in the regulation of miR-325-3p on OGD/R-induced neuronal injury. Furthermore, miR-325-3p was verified to hinder OGD/R-induced neuronal injury through downregulating RIP3. CONCLUSION This study demonstrated that miR-325-3p targets RIP3 to inactivate the MAPK pathway, thereby protecting neurons against OGD/R-induced injury.
Collapse
Affiliation(s)
- Song Yi
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Chuqin Zhang
- Department of Otorhinolaryngology, The 2nd Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Na Li
- Department of Stomatology, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Yajing Fu
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Hongkun Li
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Jun Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China,
| |
Collapse
|
15
|
Sun S, Liu F, Xian S, Cai D. miR-325-3p Overexpression Inhibits Proliferation and Metastasis of Bladder Cancer Cells by Regulating MT3. Med Sci Monit 2020; 26:e920331. [PMID: 32512576 PMCID: PMC7297032 DOI: 10.12659/msm.920331] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND miRNAs have been widely used in cancer treatment. Our study was designed to explore the effects of miR-325-3p in bladder cancer cells. MATERIAL AND METHODS Levels ofd miR-325-3p and MT3 in bladder cancer tissues and cells were assessed by quantitative real-time polymerase chain reaction (qRT-PCR). miR-325-3p mimics were transfected into bladder cancer T24 cells, and cell migration and invasion rates and cell proliferation were assessed by transwell assay and Cell Counting Kit-8 (CCK-8). The target mRNA for miR-325-3p was predicted by Targetscan7.2 and confirmed by dual-luciferase reporter assay. More experiments were performed to confirm the effects of miR-325-3p and MT3 in T24 cells. Additionally, the levels of TIMP-2, MMP9, and E-cadherin were assessed by Western blotting to identify the effects of miR-325-3p and MT3 on epithelial-mesenchymal transition (EMT). RESULTS miR-325-3p expression was reduced and MT3 was increased in bladder cancer tissues and bladder cancer cells. miR-325-3p mimics suppressed cell proliferation ability and invasion and migration rates of T24 cells. Moreover, miR-325-3p was confirmed to target MT3. Further experiments showed that the effects of increased cell proliferation, invasion, migration, and EMT promoted by MT3 overexpression were abolished by miR-325-3p mimics, proving that miR-325-3p is a tumor suppressor through targeting MT3 in bladder cancer cells. CONCLUSIONS Downregulation of miR-325-3p in bladder cancer regulates cell proliferation, migration, invasion, and EMT by targeting MT3. Furthermore, miR-325-3p is a potential therapeutic target in treating bladder cancer.
Collapse
Affiliation(s)
- Shaopeng Sun
- Department of Urology, Beijing Luhe Hospital Affiliated to Beijing Capital Medical University, Beijing, China (mainland)
| | - Feng Liu
- Department of Urology, Beijing Luhe Hospital Affiliated to Beijing Capital Medical University, Beijing, China (mainland)
| | - Shaozhong Xian
- Department of Urology, Beijing Luhe Hospital Affiliated to Beijing Capital Medical University, Beijing, China (mainland)
| | - Dawei Cai
- Department of Urology, Beijing Luhe Hospital Affiliated to Beijing Capital Medical University, Beijing, China (mainland)
| |
Collapse
|
16
|
MicroRNA-325-3p prevents sevoflurane-induced learning and memory impairment by inhibiting Nupr1 and C/EBPβ/IGFBP5 signaling in rats. Aging (Albany NY) 2020; 12:5209-5220. [PMID: 32191629 PMCID: PMC7138556 DOI: 10.18632/aging.102942] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 01/27/2020] [Indexed: 12/17/2022]
Abstract
Endoplasmic reticulum stress-induced neuronal apoptosis contributes to neurotoxicity observed after sevoflurane exposure. However, the molecular mechanism underlying the resulting learning and memory impairments remains unknown. Here, we investigated the roles of miR-325-3p and Nupr1 in sevoflurane-induced learning and memory impairments in neonatal rats and HCN-2 human cortical neuronal cells. We found that in both neonatal rats and HCN-2 cells, sevoflurane exposure impairs learning and memory in neonatal rats and increases expression of Nupr1, the endoplasmic reticulum stress marker proteins C/EBPβ and IGFBP5, and the apoptosis-related protein markers cleaved-Caspase-3 and Bax. Using bioinformatics tools to identify microRNAs that bind to Nupr1, we found that miR-325-3p is downregulated in hippocampal neurons exposed to sevoflurane. Moreover, Nupr1 knockdown and miR-325-3p overexpression improved the rats’ performance in learning and memory tests and reduced sevoflurane-induced apoptosis in vitro and in vivo. These results suggest that miR-325-3p blocks sevoflurane-induced learning and memory impairments by inhibiting Nupr1 and the downstream C/EBPβ/IGFBP5 signaling axis in neonatal rats. MiR-325-3p may therefore be a useful therapeutic target in sevoflurane-induced neurotoxicity.
Collapse
|