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Xie G, Chen H, He C, Hu S, Xiao X, Luo Q. The dysregulation of miRNAs in epilepsy and their regulatory role in inflammation and apoptosis. Funct Integr Genomics 2023; 23:287. [PMID: 37653173 PMCID: PMC10471759 DOI: 10.1007/s10142-023-01220-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/22/2023] [Accepted: 08/26/2023] [Indexed: 09/02/2023]
Abstract
Epilepsy is a neurological disorder that impacts millions of people worldwide, and it is characterized by the occurrence of recurrent seizures. The pathogenesis of epilepsy is complex, involving dysregulation of various genes and signaling pathways. MicroRNAs (miRNAs) are a group of small non-coding RNAs that play a vital role in the regulation of gene expression. They have been found to be involved in the pathogenesis of epilepsy, acting as key regulators of neuronal excitability and synaptic plasticity. In recent years, there has been a growing interest in exploring the miRNA regulatory network in epilepsy. This review summarizes the current knowledge of the regulatory miRNAs involved in inflammation and apoptosis in epilepsy and discusses its potential as a new avenue for developing targeted therapies for the treatment of epilepsy.
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Affiliation(s)
- Guoping Xie
- Department of Clinical Laboratory, The Second Staff Hospital of Wuhan Iron and Steel (Group) Corporation, Wuhan, Hubei, China
| | - Huan Chen
- Department of Clinical Laboratory, Wuhan Institute of Technology Hospital, Wuhan Institute of Technology, Wuhan, China
| | - Chan He
- Department of Clinical Laboratory, Maternal and Child Health Hospital in Wuchang District, Wuhan, Hubei, China
| | - Siheng Hu
- Department of Clinical Laboratory, Honggangcheng Street Community Health Service Center, Qingshan District, Wuhan, Hubei, China
| | - Xue Xiao
- Department of Clinical Laboratory, Gongrencun Street Community Health Service Center, Wuhan, China
| | - Qunying Luo
- Department of Neurology, Huarun Wuhan Iron and Steel General Hospital, Wuhan, Hubei, China.
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Cao F, Jiang X, Xiong A, Yang M, Shi J, Chang Y, Gao T, Yang S, Tan J, Xia P, Xu J. Identification of the OA-related metabolism-related genes, corresponding transcription factors, relevant pathways, and specific bioactive small molecules. Int Immunopharmacol 2022; 112:109096. [PMID: 36152536 DOI: 10.1016/j.intimp.2022.109096] [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: 03/15/2022] [Revised: 07/10/2022] [Accepted: 07/24/2022] [Indexed: 11/19/2022]
Abstract
Metabolic alteration of articular cartilage is associated with the pathogenesis of Osteoarthritis (OA). This study aims to identify the metabolism-related genes, corresponding transcription factors (TFs), and relevant pathways. Overall, RNA sequencing profiles of articular cartilage were collected from the GEO database. Metabolism-related genes and OA-related hallmarks were collected from the MSigDB v7.1. Differential expression analysis, Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, and Gene Set Variation Analysis (GSVA) were conducted to identify pathways or hallmarks that were related to the pathogenesis of OA. The Pearson correlation analysis was used to establish the regulatory network among transcription factors, metabolism-related genes, and hallmarks. To further confirm the regulation of the identified transcription factors, Chromatin Immunoprecipitation-sequencing (ChIP-seq) was conducted, and single-cell sequencing was used to locate the cell clusters. Connectivity Map (CM) analysis were also conducted to identify the potential specific bioactive small molecules targeting the metabolic alteration of osteoarthritis. scTPA database was used to detect activated signaling pathways. Collectively, a total of 74 and 38 differentially expressed metabolism-related genes and TFs were retrieved. Skeletal system development, extracellular matrix, and cell adhesion molecule binding were important pathways in GO analysis. Human papillomavirus infection, PI3K-Akt signaling pathway, and Human T-cell leukemia virus 1 infection were the top 3 pathways in KEGG. 7 and 12 hallmarks were down- and up-regulated in GSVA, respectively. Ten bioactive small molecules may be potential treatments of OA by regulating the metabolism of articular cartilage. ChIP-seq analysis showed high relativity between transcription factors and their target genes. Furthermore, single-cell sequencing confirms the high expression of identified transcription factors in chondrocytes. To conclude, we established a comprehensive network integrated with transcription factors, metabolism-related genes, and hallmarks.
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Affiliation(s)
- Fuyang Cao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Xu Jiang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Ao Xiong
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Meng Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Jianming Shi
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Yingjian Chang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Tianhao Gao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Shangliang Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Jun Tan
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Peige Xia
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China
| | - Jianzhong Xu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, 450000, China.
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Jia Y, Tang L, Yao Y, Zhuo L, Qu D, Chen X, Ji Y, Tao J, Zhu Y. Low-intensity exercise combined with sodium valproate attenuates kainic acid-induced seizures and associated co-morbidities by inhibiting NF-κB signaling in mice. Front Neurol 2022; 13:993405. [PMID: 36212646 PMCID: PMC9534325 DOI: 10.3389/fneur.2022.993405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/30/2022] [Indexed: 11/13/2022] Open
Abstract
Sodium valproate (VPA) is a broad-spectrum anticonvulsant that is effective both in adults and children suffering from epilepsy, but it causes psychiatric and behavioral side effects in patients with epilepsy. In addition, 30% of patients with epilepsy develop resistance to VPA. At present, regular physical exercise has shown many benefits and has become an effective complementary therapy for various brain diseases, including epilepsy. Therefore, we wondered whether VPA combined with exercise would be more effective in the treatment of seizures and associated co-morbidities. Here, we used a mouse model with kainic acid (KA)-induced epilepsy to compare the seizure status and the levels of related co-morbidities, such as cognition, depression, anxiety, and movement disorders, in each group using animal behavioral experiment and local field potential recordings. Subsequently, we investigated the mechanism behind this phenomenon by immunological means. Our results showed that low-intensity exercise combined with VPA reduced seizures and associated co-morbidities. This phenomenon seems to be related to the Toll-like receptor 4, activation of the nuclear factor kappa B (NF-κB), and release of interleukin 1β (IL-1β), tumor necrosis factor α (TNF-α), and IL-6. In brief, low-intensity exercise combined with VPA enhanced the downregulation of NF-κB-related inflammatory response, thereby alleviating the seizures, and associated co-morbidities.
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Affiliation(s)
- Yuxiang Jia
- School of Medicine, Shanghai University, Shanghai, China
| | - Lele Tang
- Department of Neurology and Neurosurgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yu Yao
- School of Medicine, Shanghai University, Shanghai, China
| | - Limin Zhuo
- School of Medicine, Shanghai University, Shanghai, China
| | - Dongxiao Qu
- Department of Neurology and Neurosurgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xingxing Chen
- Department of Neurology and Neurosurgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yonghua Ji
- School of Medicine, Shanghai University, Shanghai, China
- *Correspondence: Yonghua Ji
| | - Jie Tao
- Department of Neurology and Neurosurgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Jie Tao
| | - Yudan Zhu
- Department of Neurology and Neurosurgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Yudan Zhu
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Wang F, Guo L, Wu Z, Zhang T, Dong D, Wu B. The Clock gene regulates kainic acid-induced seizures through inhibiting ferroptosis in mice. J Pharm Pharmacol 2022; 74:1640-1650. [PMID: 35704277 DOI: 10.1093/jpp/rgac042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Accepted: 05/20/2022] [Indexed: 12/28/2022]
Abstract
OBJECTIVES Temporal lobe epilepsy (TLE) is a common and intractable form of epilepsy. There is a strong need to better understand molecular events underlying TLE and to find novel therapeutic agents. Here we aimed to investigate the role of Clock and ferroptosis in regulating TLE. METHODS TLE model was established by treating mice with kainic acid (KA). Regulatory effects of the Clock gene on KA-induced seizures and ferroptosis were evaluated using Clock knockout (Clock-/-) mice. mRNA and protein levels were determined by quantitative real-time PCR and western blotting, respectively. Ferroptosis was assessed by measuring the levels of iron, GSH and ROS. Transcriptional regulation was studied using a combination of luciferase reporter, mobility shift and chromatin immunoprecipitation (ChIP) assays. KEY FINDINGS We found that Clock ablation exacerbated KA-induced seizures in mice, accompanied by enhanced ferroptosis in the hippocampus. Clock ablation reduced the hippocampal expression of GPX4 and PPAR-γ, two ferroptosis-inhibitory factors, in mice and in N2a cells. Moreover, Clock regulates diurnal expression of GPX4 and PPAR-γ in mouse hippocampus and rhythmicity in KA-induced seizures. Consistent with this finding, Clock overexpression up-regulated GPX4 and PPAR-γ and protected against ferroptosis in N2a cells. In addition, luciferase reporter, mobility shift and ChIP assays showed that CLOCK trans-activated Gpx4 and Ppar-γ through direct binding to the E-box elements in the gene promoters. CONCLUSION CLOCK protects against KA-induced seizures through increased expression of GPX4 and PPAR-γ and inhibition of ferroptosis.
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Affiliation(s)
- Fei Wang
- College of Pharmacy, Jinan University, Guangzhou, China.,Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lianxia Guo
- College of Pharmacy, Jinan University, Guangzhou, China.,Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhengping Wu
- School of Medicine, Yichun University, Yichun, China
| | - Tianpeng Zhang
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Dong Dong
- School of Medicine, Jinan University, Guangzhou, China
| | - Baojian Wu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
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Li C, Chai X, Pan J, Huang J, Wu Y, Xue Y, Zhou W, Yang J, Zhu X, Zhao S. β-Hydroxybutyrate Alleviates Low Glucose-Induced Apoptosis via Modulation of ROS-Mediated p38 MAPK Signaling. J Mol Neurosci 2022; 72:923-938. [PMID: 35129799 DOI: 10.1007/s12031-022-01974-3] [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: 09/14/2021] [Accepted: 01/14/2022] [Indexed: 11/26/2022]
Abstract
Hypoglycemia has emerged as a prominent complication in anti-diabetic drug therapy or negative energy balance of animals, which causes brain damage, cognitive impairment, and even death. Brain injury induced by hypoglycemia is closely related to oxidative stress and the production of reactive oxygen species (ROS). The intracellular accumulation of ROS leads to neuronal damage, even death. Ketone body β-hydroxybutyrate (BHBA) not only serves as alternative energy source for glucose in extrahepatic tissues, but is also involved in cellular signaling transduction. Previous studies showed that BHBA reduces apoptosis by inhibiting the excessive production of ROS and activation of caspase-3. However, the effects of BHBA on apoptosis induced by glucose deprivation and its related molecular mechanisms have been seldom reported. In the present study, PC12 cells and primary cortical neurons were used to establish a low glucose injury model. The effects of BHBA on the survival and apoptosis in a glucose deficient condition and related molecular mechanisms were investigated by using flow cytometry, immunofluorescence, and western blotting. PC12 cells were incubated with 1 mM glucose for 24 h as a low glucose cell model, in which ROS accumulation and cell mortality were significantly increased. After 24 h and 48 h treatment with different concentrations of BHBA (0 mM, 0.05 mM, 0.5 mM, 1 mM, 2 mM), ROS production was significantly inhibited. Moreover, cell apoptosis rate was decreased and survival rate was significantly increased in 1 mM and 2 mM BHBA groups. In primary cortical neurons, at 24 h after treatment with 2 mM BHBA, the injured length and branch of neurites were significantly improved. Meanwhile, the intracellular ROS level, the proportion of c-Fos+ cells, apoptosis rate, and nuclear translocation of NF-κB protein after treatment with BHBA were significantly decreased when compared with that in low glucose cells. Importantly, the expression of p38, p-p38, NF-κB, and caspase-3 were significantly decreased, while the expression of p-ERK was significantly increased in both PC12 cells and primary cortical neurons. Our results demonstrate that BHBA decreased the accumulation of intracellular ROS, and further inhibited cell apoptosis by mediating the p38 MAPK signaling pathway and caspase-3 apoptosis cascade during glucose deprivation. In addition, BHBA inhibited apoptosis by activating ERK phosphorylation and alleviated the damage of low glucose to PC12 cells and primary cortical neurons. These results provide new insight into the anti-apoptotic effect of BHBA in a glucose deficient condition and the related signaling cascade.
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Affiliation(s)
- Cixia Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Xuejun Chai
- College of Basic Medicine, Xi'An Medical University, Xi'An, Shaanxi, 710021, People's Republic of China
| | - Jiarong Pan
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jian Huang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Yongji Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Yuhuan Xue
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Wentai Zhou
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jiping Yang
- College of Basic Medicine, Xi'An Medical University, Xi'An, Shaanxi, 710021, People's Republic of China
| | - Xiaoyan Zhu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Shanting Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
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Ghafouri-Fard S, Hussen BM, Abak A, Taheri M, Jalili Khoshnoud R. Aberrant expression of miRNAs in epilepsy. Mol Biol Rep 2022; 49:5057-5074. [PMID: 35088379 PMCID: PMC9262756 DOI: 10.1007/s11033-022-07188-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/21/2022] [Indexed: 12/22/2022]
Abstract
Epilepsy is manifested by intermittent convulsions and alterations in consciousness. This disorder has serious effects on daily functions and physical and mental health of affected patients. A variety of temporary irregularities in the function of brain can results in epilepsy. The molecular mechanism of epilepsy and the underlying causes of abnormal apoptotic responses in neurons, dysregulation of regenerative mechanisms in glial cells and abnormal immune reactions in the context of epilepsy are not clear. microRNAs (miRNAs) as important regulators of cell apoptosis as well as regenerative and immune responses have been shown to affect pathologic events in epilepsy. In the current review, we aimed at defining the role of miRNAs in the pathophysiology of epilepsy. We have listed dysregulated miRNAs in animal models of epilepsy and human subjects. miR-25-3p, miR-494, miR-139-5p, miR-101a-3p, miR-344a, miR-129, miR-298 and miR-187 are among down-regulated miRNAs in epilepsy. Moreover, expressions of miR-132, miR-146a, miR-181a and miR-155 have been reported to be increased in epilepsy. A number of genetic variants within miRNAs can affect risk of epilepsy. We discuss the role of miRNAs in the development of epilepsy.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Atefe Abak
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Reza Jalili Khoshnoud
- Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Zhou L, Xue C, Chen Z, Jiang W, He S, Zhang X. c-Fos is a mechanosensor that regulates inflammatory responses and lung barrier dysfunction during ventilator-induced acute lung injury. BMC Pulm Med 2022; 22:9. [PMID: 34986829 PMCID: PMC8734268 DOI: 10.1186/s12890-021-01801-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 12/13/2021] [Indexed: 12/05/2022] Open
Abstract
Background As one of the basic treatments performed in the intensive care unit, mechanical ventilation can cause ventilator-induced acute lung injury (VILI). The typical features of VILI are an uncontrolled inflammatory response and impaired lung barrier function; however, its pathogenesis is not fully understood, and c-Fos protein is activated under mechanical stress. c-Fos/activating protein-1 (AP-1) plays a role by binding to AP-1 within the promoter region, which promotes inflammation and apoptosis. T-5224 is a specific inhibitor of c-Fos/AP-1, that controls the gene expression of many proinflammatory cytokines. This study investigated whether T-5224 attenuates VILI in rats by inhibiting inflammation and apoptosis. Methods The SD rats were divided into six groups: a control group, low tidal volume group, high tidal volume group, DMSO group, T-5224 group (low concentration), and T-5224 group (high concentration). After 3 h, the pathological damage, c-Fos protein expression, inflammatory reaction and apoptosis degree of lung tissue in each group were detected. Results c-Fos protein expression was increased within the lung tissue of VILI rats, and the pathological damage degree, inflammatory reaction and apoptosis in the lung tissue of VILI rats were significantly increased; T-5224 inhibited c-Fos protein expression in lung tissues, and T-5224 inhibit the inflammatory reaction and apoptosis of lung tissue by regulating the Fas/Fasl pathway. Conclusions c-Fos is a regulatory factor during ventilator-induced acute lung injury, and the inhibition of its expression has a protective effect. Which is associated with the antiinflammatory and antiapoptotic effects of T-5224.
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Affiliation(s)
- Leilei Zhou
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China
| | - Chunju Xue
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China
| | - Zongyu Chen
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China
| | - Wenqing Jiang
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China
| | - Shuang He
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China
| | - Xianming Zhang
- School of Clinical Medicine, Guizhou Medical University, 550004, Guiyang, China. .,Department of Respiratory and Critical Care Medicine, The Affiliated Hospital of Guizhou Medical University, 550004, Guiyang, China.
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Wang Y, Zhao S, Li G, Wang D, Jin Y. Neuroprotective Effect of HOTAIR Silencing on Isoflurane-Induced Cognitive Dysfunction via Sponging microRNA-129-5p and Inhibiting Neuroinflammation. Neuroimmunomodulation 2022; 29:369-379. [PMID: 35026768 DOI: 10.1159/000521014] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 11/08/2021] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION This article purposed to detect the function of the HOTAIR and HOTAIR/microRNA-129-5p (miR-129-5p) axis on the isoflurane (ISO)-injured cells and rat, and propounded a novel perspective in exploring the molecular pathogenesis of ISO damage. METHODS The expression of HOTAIR and miR-129-5p was tested by quantitative real-time PCR. The viable cells were identified using MMT, and the apoptotic cells were provided by flow cytometry. The concentration of proinflammatory indicators was revealed by enzyme-linked immunosorbent assay kits. The function of HOTAIR on oxidative stress was detected by commercial kits. A luciferase assay was performed to confirm the relationship between miR-129-5p and HOTAIR. The Morris water maze test was conducted to elucidate the cognition of SD rats. RESULTS The expression of HOTAIR was enhanced and the expression of miR-129-5p was lessened in the ISO-evoked SD rats and HT22 cells. The interference of HOTAIR reversed the injury of ISO on cell viability, apoptosis, inflammation, and oxidative stress. Besides, HOTAIR might be a target ceRNA of miR-129-5p. MiR-129-5p abrogated the function of silenced HOTAIR on cell viability, cell apoptosis, inflammation, and oxidative stress. Moreover, in vivo, the intervention of HOTAIR reversed the influence of ISO on cognition and oxidative stress by binding miR-129-5p. DISCUSSION/CONCLUSION Lowly expressed HOTAIR contributed to the recovery of the ISO-injured HT22 cell model from the abnormal viability, apoptosis, inflammation, and oxidative stress by regulating miR-129-5p. miR-129-5p mediated the function of HOTAIR on cognition and oxidative balance in the ISO-managed SD rat model.
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Affiliation(s)
- Ying Wang
- Department of Operating Room, The Second Hospital of Shandong University, Shandong University, Jinan, China
| | - Shanshan Zhao
- Department of Anesthesiology, The Second Hospital of Shandong University, Shandong University, Jinan, China
| | - Guohua Li
- Department of Anesthesiology, The Second Affiliated Hospital of Shandong First Medical University, Taian, China
| | - Dawei Wang
- Department of Obstetrics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yanwu Jin
- Department of Anesthesiology, The Second Hospital of Shandong University, Shandong University, Jinan, China
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Ojo ES, Ishola IO, Afolayan O, James AB, Ben-Azu B, Adeyemi OO. Cnestis ferruginea Vahl ex DC (Connaraceae) downregulates expression of immediate early genes in kainic acid-induced temporal lobe epilepsy in mice. Drug Metab Pers Ther 2021; 37:191-200. [PMID: 34881530 DOI: 10.1515/dmpt-2021-0145] [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: 05/08/2021] [Accepted: 07/09/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES This study investigates the influence of Cnestis ferruginea (CF) on kainic acid (KA)-induced immediate early genes (IEGs) associated with hippocampal sclerosis in temporal lobe epilepsy (TLE) in mice. METHODS Animals were randomly divided into preventive treatment; vehicle (10 mL/kg, p.o.) or CF (400 mg/kg, p.o.) for three consecutive days before KA (5 mg/kg, i.p.) on days 4 and 5. In the reversal model, KA (5 mg/kg, i.p.) was administered on days 1 and 2 before CF (400 mg/kg) administration on days 3-5. Animals were euthanized on day 5, 6 h after KA exposure in preventive model and 1 h after CF administration in reversal model to estimate markers of IEGs. RESULTS KA upregulated the expression of c-Fos protein by 3.32-, 9.45-, 8.13-, and 8.66-fold in the hippocampal CA1, CA2, CA3, and DG regions, respectively. Also, KA elevated inducible nitric oxide synthase protein expression by 10.9-, 10.6-, 9.78-, and 9.51-fold. Besides, mRNA expression of brain-derived neurotrophic factors and heat shock protein was increased by 2.38- and 1.39-fold, respectively, after exposure to KA which were attenuated by CF. CONCLUSIONS CF attenuated KA-induced IEGs and could be used as an adjunct in TLE.
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Affiliation(s)
- Emmanuel S Ojo
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Lagos State, Nigeria
| | - Ismail O Ishola
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Lagos State, Nigeria
| | - Olasunmbo Afolayan
- Department of Anatomy, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Lagos State, Nigeria
| | - Ayorinde B James
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria
| | - Benneth Ben-Azu
- Department of Pharmacology and Therapeutics, Faculty of Basic Medical Sciences, Delta State University, Abraka, Delta State, Nigeria
| | - Olufunmilayo O Adeyemi
- Department of Pharmacology, Therapeutics and Toxicology, Faculty of Basic Medical Sciences, College of Medicine, University of Lagos, Lagos, Lagos State, Nigeria
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Decreased MicroRNA-150 Exacerbates Neuronal Apoptosis in the Diabetic Retina. Biomedicines 2021; 9:biomedicines9091135. [PMID: 34572320 PMCID: PMC8469350 DOI: 10.3390/biomedicines9091135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 12/27/2022] Open
Abstract
Diabetic retinopathy (DR) is a chronic complication associated with diabetes and the number one cause of blindness in working adults in the US. More than 90% of diabetic patients have obesity-associated type 2 diabetes (T2D), and 60% of T2D patients will develop DR. Photoreceptors undergo apoptosis shortly after the onset of diabetes, which contributes to the retinal dysfunction and microvascular complications leading to vision impairment. However, how diabetic insults cause photoreceptor apoptosis remains unclear. In this study, obesity-associated T2D mice and cultured photoreceptors were used to investigate how decreased microRNA-150 (miR-150) and its downstream target were involved in photoreceptor apoptosis. In the T2D retina, miR-150 was decreased with its target ETS-domain transcription factor (ELK1) and phosphorylated ELK1 at threonine 417 (pELK1T417) upregulated. In cultured photoreceptors, treatments with palmitic acid (PA), to mimic a high-fat environment, decreased miR-150 but upregulated ELK1, pELK1T417, and the translocation of pELK1T417 from the cytoplasm to the cell nucleus. Deletion of miR-150 (miR-150-/-) exacerbates T2D- or PA-induced photoreceptor apoptosis. Blocking the expression of ELK1 with small interfering RNA (siRNA) for Elk1 did not rescue PA-induced photoreceptor apoptosis. Translocation of pELK1T417 from cytoplasm-to-nucleus appears to be the key step of diabetic insult-elicited photoreceptor apoptosis.
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Fan Y, Tang Z, Sun J, Zhao X, Li Z, Zheng Y, Zeng X, Feng J. MicroRNA-29a promotes the proliferation of human nasal epithelial cells and inhibits their apoptosis and promotes the development of allergic rhinitis by down-regulating FOS expression. PLoS One 2021; 16:e0255480. [PMID: 34383804 PMCID: PMC8360612 DOI: 10.1371/journal.pone.0255480] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/18/2021] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE To explore the regulation of microRNA-29a (miR-29a) on FOS in human nasal epithelial cells and its molecular mechanism, as well as the effects of miR-29a on the cell proliferation and apoptosis. METHODS By cell transfection, gene silencing, quantitative real-time polymerase chain reaction (qRT-PCR), flow cytometry and TUNEL assay (for cell apoptosis), CCK-8 assay (for cell proliferation), dual-luciferase reporter gene assay and Western Blot, it was validated that miR-29a promoted the proliferation of human nasal epithelial cells and inhibited their apoptosis by down-regulating FOS expression in RPMI2650 and HNEpC cell lines. RESULTS ①Compared with healthy controls, miR-29a expression was up-regulated and FOS mRNA expression was down-regulated in the nasal tissues from the patients with allergic rhinitis (AR). ②MiR-29a over-expression promoted the proliferation of RPMI2650 cells and HNEpC cells but inhibited their apoptosis. ③MiR-29a targeted at FOS. ④MiR-29a over-expression and FOS silencing both significantly promoted cell proliferation and inhibited cell apoptosis. After transfection with both miR-29a and FOS, there was a decrease in the proliferation but an increase in the apoptosis of cells.⑤MiR-29a promoted the proliferation of human nasal epithelial cells and inhibited their apoptosis by down-regulating FOS expression. CONCLUSION MiR-29a-/FOS axis can be regarded as a potential marker and a new therapy for AR.
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Affiliation(s)
- Yuqin Fan
- Department of Otolaryngology-Head and Neck Surgery, Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhiyuan Tang
- Department of Otorhinolaryngology, Shenzhen Longgang E.N.T Hospital & Shenzhen Key Laboratory of E.N.T., Institute of E.N.T., Shenzhen, Guangdong, China
| | - Jie Sun
- Department of Otorhinolaryngology, The Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Xiaorui Zhao
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Zhen Li
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Yiqing Zheng
- Department of Otolaryngology, Sun Yat-Sen Memorial Hospital, Guangzhou, Guangdong, P.R. China
| | - Xianhai Zeng
- Department of Otorhinolaryngology, Shenzhen Longgang E.N.T Hospital & Shenzhen Key Laboratory of E.N.T., Institute of E.N.T., Shenzhen, Guangdong, China
| | - Juan Feng
- Department of Otorhinolaryngology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Wang GY, Luan ZL, Che NW, Yan DB, Sun XW, Zhang C, Yin J. Inhibition of microRNA-129-2-3p protects against refractory temporal lobe epilepsy by regulating GABRA1. Brain Behav 2021; 11:e02195. [PMID: 34029007 PMCID: PMC8323041 DOI: 10.1002/brb3.2195] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 03/30/2021] [Accepted: 05/05/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Accumulating evidence demonstrates that certain microRNAs play critical roles in epileptogenesis. Our previous studies found microRNA (miR)-129-2-3p was induced in patients with refractory temporal lobe epilepsy (TLE). In this study, we aimed to explore the role of miR-129-2-3p in TLE pathogenesis. METHOD By bioinformatics, we predicted miR-129-2-3p may target the gene GABRA1 encoding the GABA type A receptor subunit alpha 1. Luciferase assay was used to investigate the regulation of miR-129-2-3p on GABRA1 3'UTR. The dynamic expression of miR-129-2-3p and GABRA1 mRNA and protein levels were measured in primary hippocampal neurons and a rat kainic acid (KA)-induced seizure model by quantitative reverse transcription-polymerase chain reaction (qPCR), Western blotting, and immunostaining. MiR-129-2-3p agomir and antagomir were utilized to explore their role in determining GABRA1 expression. The effects of targeting miR-129-2-3p and GABRA1 on epilepsy were assessed by electroencephalography (EEG) and immunostaining. RESULTS Luciferase assay, qPCR, and Western blot results suggested GABRA1 as a direct target of miR-129-2-3p. MiR-129-2-3p level was significantly upregulated, whereas GABRA1 expression downregulated in KA-treated rat primary hippocampal neurons and KA-induced seizure model. In vivo knockdown of miR-129-2-3p by antagomir alleviated the seizure-like EEG findings in accordance with the upregulation of GABRA1. Furthermore, the seizure-suppressing effect of the antagomir was partly GABRA1 dependent. CONCLUSIONS The results suggested GABRA1 as a target of miR-129-2-3p in rat primary hippocampal neurons and a rat kainic acid (KA) seizure model. Silencing of miR-129-2-3p exerted a seizure-suppressing effect in rats. MiR-129-2-3p/GABRA1 pathway may represent a potential target for the prevention and treatment of refractory epilepsy.
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Affiliation(s)
- Guan-Yu Wang
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China.,Epileptic Center of Liaoning, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhi-Lin Luan
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China.,Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Ning-Wei Che
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - De-Bin Yan
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China.,Epileptic Center of Liaoning, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiao-Wan Sun
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Cong Zhang
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian, China
| | - Jian Yin
- Department of Neurosurgery, the Second Affiliated Hospital of Dalian Medical University, Dalian, China.,Epileptic Center of Liaoning, the Second Affiliated Hospital of Dalian Medical University, Dalian, China
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13
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Deng B, Tang X, Wang Y. Role of microRNA-129 in cancer and non-cancerous diseases (Review). Exp Ther Med 2021; 22:918. [PMID: 34335879 PMCID: PMC8290460 DOI: 10.3892/etm.2021.10350] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/11/2021] [Indexed: 12/15/2022] Open
Abstract
An increasing number of studies indicate that microRNAs (miRNAs/miRs) are involved in diverse biological signaling pathways and play important roles in the progression of various diseases, including both oncological and non-oncological diseases. These small non-coding RNAs can block translation, resulting in a low expression level of target genes. miR-129 is an miRNA that has been the focus of considerable research in recent years. A growing body of evidence shows that the miR-129 family not only functions in cancer, including osteosarcoma, nasopharyngeal carcinoma, and ovarian, prostate, lung, breast and colon cancer, but also in non-cancerous diseases, including heart failure (HF), epilepsy, Alzheimer's disease (AD), obesity, diabetes and intervertebral disc degeneration (IVDD). It is therefore necessary to summarize current research progress on the role of miR-129 in different diseases. The present review includes an updated summary of the mechanisms of the miR-129 family in oncological and non-oncological diseases. To the best of our knowledge, this is the first review focusing on the role of miR-129 in non-cancerous diseases such as obesity, HF, epilepsy, diabetes, IVDD and AD.
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Affiliation(s)
- Bingpeng Deng
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, P.R. China
| | - Xuan Tang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, P.R. China
| | - Yong Wang
- Department of Forensic Science, School of Basic Medical Science, Central South University, Changsha, Hunan 410013, P.R. China
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Yin J, Chen H, Li S, Zhang S, Guo X. Blockage of miR-485-5p on Cortical Neuronal Apoptosis Induced by Oxygen and Glucose Deprivation/Reoxygenation Through Inactivating MAPK Pathway. Neuromolecular Med 2021; 23:256-266. [PMID: 32719988 DOI: 10.1007/s12017-020-08605-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 07/21/2020] [Indexed: 02/07/2023]
Abstract
This study is designed to explore the role of miR-485-5p in hypoxia/reoxygenation-induced neuronal injury in primary rat cortical neurons. Hypoxia/reoxygenation model was established through oxygen and glucose deprivation/reoxygenation (OGD/R). RN-c cells were transfected with miR-485-5p mimics, miR-485-5p inhibitors, si-SOX6, pCNDA3.1-SOX6 or miR-485-5p + pCDNA3.1-SOX6, in which cell viability, apoptosis, lactate dehydrogenase (LDH) release rate were assessed. Western blot detected the protein expressions of apoptotic-related proteins (caspase3, Bcl-2, Bax) and the phosphorylated level of ERK1/2. The potential binding sites between miR-485-5p and SOX6 were predicted by STARBASE and identified using dual luciferase reporter gene assay. OGD/R-treated RN-c cell presented increases in apoptosis and LDH release rate as well as a decrease in cell viability. miR-485-5p was downregulated while SOX6 was upregulated in OGD/R-treated RN-c cells. Overexpression of miR-485-5p or SOX6 knockdown rescued cell viability and Bcl-2 expression, while attenuated apoptosis, LDH release rate, expression of SOX6 and the phosphorylated level of ERK1/2. Consistently, miR-485-5p inhibition led to the reverse pattern. Co-transfection of miR-485-5p and SOX6 reversed the protective effect of miR-485-5p on OGD/R-induced neuronal apoptosis. miR-485-5p can directly target SOX6. Together, miR-485-5p inhibited SOX6 to alleviate OGD/R-induced apoptosis. Collectively, miR-485-5p protects primary cortical neurons against hypoxia injury through downregulating SOX6 and inhibiting MAPK pathway.
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Affiliation(s)
- Jiangliu Yin
- Department of Neurosurgery, Changsha Central Hospital of University of South China, Changsha, 410005, Hunan, People's Republic of China
| | - Huan Chen
- Hunan Provincial Center for Disease Prevent and Control, Changsha, 410006, Hunan, People's Republic of China
| | - Suonan Li
- Department of Neurosurgery, Changsha Central Hospital of University of South China, Changsha, 410005, Hunan, People's Republic of China
| | - Shuai Zhang
- Department of Neurosurgery, Changsha Central Hospital of University of South China, Changsha, 410005, Hunan, People's Republic of China
| | - Xieli Guo
- Department of Neurosurgery, Jinjiang Municipal Hospital of Quanzhou Medical College, No. 392, Xinhua Road, Meiling Street, Quanzhou, 362200, Fujian, People's Republic of China.
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15
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Geng J, Zhao H, Liu X, Geng J, Gao Y, He B. MiR-101a-3p Attenuated Pilocarpine-Induced Epilepsy by Downregulating c-FOS. Neurochem Res 2021; 46:1119-1128. [PMID: 33559830 DOI: 10.1007/s11064-021-03245-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/21/2020] [Accepted: 01/12/2021] [Indexed: 01/07/2023]
Abstract
This study aimed to explore the effects and function of microRNA-101a-3p (miR-101a-3p) in epilepsy. Rat model of pilocarpine-induced epilepsy was established and the seizure frequency was recorded. Expression of miR-101a-3p and c-Fos in hippocampus tissues of Rat models were detected by qRT-PCR and western blot. Besides, we established a hippocampal neuronal culture model of acquired epilepsy using Mg2+ free medium to evaluate the effects of miR-101a-3p and c-Fos in vitro. Cells were transfected with miR-101a-3p mimic, si-c-FOS, miR-101a-3p + c-FOS and its corresponding controls. MTT assay was used to detect cell viability upon transfection. Flow cytometry was performed to determine the apoptosis rate. Western blot was performed to measure the protein expression of apoptosis-related proteins (Bcl-2, Bax, and cleaved caspase 3), autophagy-related proteins (LC3 and Beclin1) and c-FOS. The targeting relationship between miR-101a-3p and c-FOS was predicted and verified by TargetScan software and dual-luciferase reporter assay. The role of miR-101a-3p was validated using epilepsy rat models in vivo. Another Rat models of pilocarpine-induced epilepsy with miR-NC or miR-101a-3p injection were established to evaluate the effect of miR-101a-3p overexpression on epilepsy in vivo. MiR-101a-3p was downregulated while c-FOS was increased in hippocampus tissues of Rat model of pilocarpine-induced epilepsy. Overexpression of miR-101a-3p or c-FOS depletion promoted cell viability, inhibited cell apoptosis and autophagy. C-FOS was a target of miR-101a-3p and miR-101a-3p negatively regulated c-FOS expression to function in epilepsy. Overexpression of miR-101a-3p attenuated pilocarpine-induced epilepsy in Rats in vivo. This study indicated that miR-101a-3p could attenuate pilocarpine-induced epilepsy by repressing c-Fos expression.
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Affiliation(s)
- Jiefeng Geng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China.
| | - Haibiao Zhao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Xing Liu
- Department of Anesthesiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Junjie Geng
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Yuyuan Gao
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
| | - Bingzheng He
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, No. 1, East Jianshe Rd, Zhengzhou, 450052, Henan, China
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16
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Wang J, Zhao J. MicroRNA Dysregulation in Epilepsy: From Pathogenetic Involvement to Diagnostic Biomarker and Therapeutic Agent Development. Front Mol Neurosci 2021; 14:650372. [PMID: 33776649 PMCID: PMC7994516 DOI: 10.3389/fnmol.2021.650372] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 02/23/2021] [Indexed: 12/21/2022] Open
Abstract
Epilepsy is the result of a group of transient abnormalities in brain function caused by an abnormal, highly synchronized discharge of brain neurons. MicroRNA (miRNA) is a class of endogenous non-coding single-stranded RNA molecules that participate in a series of important biological processes. Recent studies demonstrated that miRNAs are involved in a variety of central nervous system diseases, including epilepsy. Although the exact mechanism underlying the role of miRNAs in epilepsy pathogenesis is still unclear, these miRNAs may be involved in the inflammatory response in the nervous system, neuronal necrosis and apoptosis, dendritic growth, synaptic remodeling, glial cell proliferation, epileptic circuit formation, impairment of neurotransmitter and receptor function, and other processes. Here, we discuss miRNA metabolism and the roles of miRNA in epilepsy pathogenesis and evaluate miRNA as a potential new biomarker for the diagnosis of epilepsy, which enhances our understanding of disease processes.
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Affiliation(s)
- Jialu Wang
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Jiuhan Zhao
- Department of Neurology, First Affiliated Hospital of China Medical University, Shenyang, China
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17
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Wang J, Dai P, Zou T, Lv Y, Zhao W, Zhang X, Zhang Y. Transcriptome analysis of the transdifferentiation of canine BMSCs into insulin producing cells. BMC Genomics 2021; 22:134. [PMID: 33632121 PMCID: PMC7905582 DOI: 10.1186/s12864-021-07426-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 02/05/2021] [Indexed: 12/31/2022] Open
Abstract
Background Bone marrow mesenchymal stem cells are a potential resource for the clinical therapy of certain diseases. Canine, as a companion animal, living in the same space with human, is an ideal new model for human diseases research. Because of the high prevalence of diabetes, alternative transplantation islets resource (i.e. insulin producing cells) for diabetes treatment will be in urgent need, which makes our research on the transdifferentiation of Bone marrow mesenchymal stem cells into insulin producing cells become more important. Result In this study, we completed the transdifferentiation process and achieved the transcriptome profiling of five samples with two biological duplicates, namely, “BMSCs”, “islets”, “stage 1”, “stage 2” and “stage 3”, and the latter three samples were achieved on the second, fifth and eighth day of induction. A total of 11,530 differentially expressed transcripts were revealed in the profiling data. The enrichment analysis of differentially expressed genes revealed several signaling pathways that are essential for regulating proliferation and transdifferentiation, including focal adhesion, ECM-receptor interaction, tight junction, protein digestion and absorption, and the Rap1 signaling pathway. Meanwhile, the obtained protein–protein interaction network and functional identification indicating involvement of three genes, SSTR2, RPS6KA6, and VIP could act as a foundation for further research. Conclusion In conclusion, to the best of our knowledge, this is the first survey of the transdifferentiation of canine BMSCs into insulin-producing cells according with the timeline using next-generation sequencing technology. The three key genes we pick out may regulate decisive genes during the development of transdifferentiation of insulin producing cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07426-3.
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Affiliation(s)
- Jinglu Wang
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Pengxiu Dai
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Tong Zou
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Yangou Lv
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Wen Zhao
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Xinke Zhang
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China
| | - Yihua Zhang
- The College of Veterinary Medicine of the Northwest Agriculture and Forestry University, No.3 Taicheng Road, Yangling, 712100, Shaanxi, P. R. China.
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18
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Pang YY, Huang GY, Song YM, Song XZ, Lv JH, He L, Niu C, Shi AY, Shi XL, Cheng YX, Yang XZ. Effects of miR-143 and its target receptor 5-HT2B on agonistic behavior in the Chinese mitten crab (Eriocheir sinensis). Sci Rep 2021; 11:4492. [PMID: 33627750 PMCID: PMC7904944 DOI: 10.1038/s41598-021-83984-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 02/10/2021] [Indexed: 11/17/2022] Open
Abstract
Chinese mitten crab (Eriocheir sinensis) as a commercially important species is widely cultured in China. However, E. sinensis is prone to agonistic behavior, which causes physical damage and wastes energy resources, negatively impacting their growth and survival. Therefore, understanding the regulatory mechanisms that underlie the switching of such behavior is essential for ensuring the efficient and cost-effective aquaculture of E. sinensis. The 5-HT2B receptor is a key downstream target of serotonin (5-HT), which is involved in regulating animal behavior. In this study, the full-length sequence of 5-HT2B gene was cloned. The total length of the 5-HT2B gene was found to be 3127 bp with a 236 bp 5′-UTR (untranslated region), a 779 bp 3′-UTR, and a 2112 bp open reading frame encoding 703 amino acids. Phylogenetic tree analysis revealed that the 5-HT2B amino acid sequence of E. sinensis is highly conserved with that of Cancer borealis. Using in vitro co-culture and luciferase assays, the miR-143 targets the 5-HT2B 3′-UTR and inhibits 5-HT2B expression was confirmed. Furthermore, RT-qPCR and Western blotting analyses revealed that the miR-143 mimic significantly inhibits 5-HT2B mRNA and protein expression. However, injection of miR-143 did not decrease agonistic behavior, indicating that 5-HT2B is not involved in the regulation of such behavior in E. sinensis.
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Affiliation(s)
- Yang-Yang Pang
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Gen-Yong Huang
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Ya-Meng Song
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Xiao- Zhe Song
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Jia-Huan Lv
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Long He
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Chao Niu
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Ao-Ya Shi
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Xing-Liang Shi
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China
| | - Yong-Xu Cheng
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China.
| | - Xiao-Zhen Yang
- National Demonstration Center for Experimental Fisheries Science Education; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture; Engineering Research Center of Aquaculture, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai, 201306, People's Republic of China.
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Inhibition of miR-129 Improves Neuronal Pyroptosis and Cognitive Impairment Through IGF-1/GSK3β Signaling Pathway: An In Vitro and In Vivo Study. J Mol Neurosci 2021; 71:2299-2309. [PMID: 33484421 DOI: 10.1007/s12031-021-01794-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 01/04/2021] [Indexed: 10/22/2022]
Abstract
Pyroptosis is a programmed cell death process which is accompanied by inflammation. The aims of this in vitro and in vivo study were to reveal whether miR-129 contributed to neuronal pyroptosis and cognitive impairment and to further explore its mechanism involved. PC-12 cells were treated with LPS, miR-129 antagomir, AXL1717 (IGF-1 receptor blocker), or SB216763 (GSK3β blocker). After that, expression of miR-129 was measured using qRT-PCR. Relationship between miR-129 and IGF-1 was revealed using luciferase reporter assay. Protein expression of IGF-1, p-Ser9-GSK3β, NLRP3, and Caspase-1 was determined using western blotting. Pyroptosis rate was measured using flow cytometry. Wistar rats were fed with high-fat diet to induce neural inflammation and were further treated with miR-129 antagomir through intracerebroventricular injection. Then, cognitive impairment was assessed by water maze test. Expression of the proteins mentioned above was measured again in midbrain and hippocampus of the rats. In the PC-12 cells, LPS-induced neuronal pyroptosis can be alleviated by miR-129 antagomir. IGF-1 was a specific target for miR-129. Up-regulation and down-regulation of IGF-1/GSK3β signaling pathway separately alleviated and deteriorated neuronal pyroptosis in the cells. In the rats, high-fat diet caused cognitive impairment following with neuronal pyroptosis and down-regulation of IGF-1/GSK3β signaling pathway in midbrain and hippocampus tissues. Also, miR-129 antagomir improved these abnormalities in the rats. Inhibition of miR-129 improved neuronal pyroptosis and cognitive impairment through IGF-1/GSK3β signaling pathway.
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Chen J, Luo X, Liu M, Peng L, Zhao Z, He C, He Y. Silencing long non-coding RNA NEAT1 attenuates rheumatoid arthritis via the MAPK/ERK signalling pathway by downregulating microRNA-129 and microRNA-204. RNA Biol 2021; 18:657-668. [PMID: 33258403 DOI: 10.1080/15476286.2020.1857941] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The participation of long noncoding RNAs (lncRNAs) and microRNAs (miRs) in the progression of rheumatoid arthritis (RA) is a key area of investigation. The current study aimed to investigate the action of lncRNA nuclear paraspeckle assembly transcript 1 (NEAT1) in fibroblast-like synoviocyte (FLS) proliferation and synovitis in RA. A rat model of RA was established. LncRNA NEAT1 expression in the synovial tissues of patients with RA and FLSs from the RA rat model was determined using RT-qPCR. Next, dual luciferase reporter gene assay was applied to investigate the relationship between miR-129/204 and mitogen-activated protein kinase (MAPK)/extracellular regulated protein kinase (ERK). A putative binding relationship between miR-204 and lncRNA NEAT1 was evaluated by RIP assay, and miR-129 promoter methylation was determined using MSP. After the expression of lncRNA NEAT1, miR-129 or miR-204 was altered in FLSs, the extent of ERK1/2 phosphorylation was assessed. In addition, FLS synovitis and proliferation were determined by ELISA and EdU assay, respectively. In RA rats, lncRNA NEAT1 was silenced and miR-129/miR-204 was overexpressed to explore their roles in vivo. LncRNA NEAT1 was upregulated, while miR-129 and miR-204 were downregulated in RA synovial tissues and FLSs. MAPK1 was target gene of both miR-129 and miR-204. LncRNA NEAT1 bound to miR-204 and promoted miR-129 promoter methylation. Silencing lncRNA NEAT1 or overexpressing miR-129/miR-204 enhanced miR-129/miR-204 expression, but reduced the extent of ERK1/2 phosphorylation, proliferation of FLSs, and synovitis in RA. Collectively, silencing lncRNA NEAT1 promoted miR-129 and miR-204 to inhibit the MAPK/ERK signalling pathway, reducing FLS synovitis in RA.Abbreviations: ACR: American College of Rheumatology; ELISA: Enzyme-linked immunosorbent assay; ERK: extracellular signal-regulated kinase; FLS: fibroblast-like synoviocyte; GADPH: glyceraldehyde-3-phosphate dehydrogenase; HRP: horseradish peroxidase; IFA: Incomplete Freund's Adjuvant; lncRNAs: long noncoding RNAs; MSP: Methylation-specific PCR; NC: negative control; NEAT1: nuclear paraspeckle assembly transcript 1; OD: optical density; RA: rheumatoid arthritis; RIPA: Radio Immunoprecipitation Assay; RLU: relative light units; RT-qPCR: reverse transcription quantitative polymerase chain reaction; UTR: untranslated region.
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Affiliation(s)
- Jie Chen
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Xiao Luo
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Mao Liu
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Lihui Peng
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Zixia Zhao
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Chengsong He
- Department of Rheumatology and Immunology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
| | - Yue He
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou, P.R. China
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Zhang YY, Bao HL, Dong LX, Liu Y, Zhang GW, An FM. Silenced lncRNA H19 and up-regulated microRNA-129 accelerates viability and restrains apoptosis of PC12 cells induced by Aβ 25-35 in a cellular model of Alzheimer's disease. Cell Cycle 2021; 20:112-125. [PMID: 33410377 DOI: 10.1080/15384101.2020.1863681] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Accumulating data manifest that long non-coding RNA (lncRNAs) are involved in all kinds of neurodegenerative disorders, consisting of the onset and progression of Alzheimer's disease (AD). The study was for the research of the mechanism of lncRNA H19 (H19) in viability and apoptosis of PC12 cells induced by Aβ25-35 in a cellular model of AD with the regulation of microRNA (miR)-129 and high mobility group box-1 protein (HMGB1). An AD cellular model of PC12 cells was established using Aβ25-35. The Aβ25-35-induced PC12 cells were transfected with si-H19 or miR-129 mimic to figure their roles in cell viability,apoptosis, mitochondrial membrane potential dysfunction and oxidative stress in AD. Luciferase reporter assay and RNA-pull down assay were employed for verification of the binding relationship between H19 and miR-129 and the targeting relationship between miR-129 and HMGB1. An AD mouse model was induced and brain tissues were collected. H19, miR-129 and HMGB1 were detected in Aβ25-35-treated cells and brain tissues of AD mice. Elevated H19, HMGB1 and decreased miR-129 were found in Aβ25-35-treated PC12 cells as well as in brain tissues of AD mice. Silenced H19 or elevated miR-129 promoted viability, inhibited apoptosis, prevented mitochondrial membrane potential dysfunction and decreased oxidative stress in Aβ25-35-treated PC12 cells. H19 could specifically bind to miR-129. MiR-129 specifically suppressed HMGB1 expression. This study suggests that silenced H19 and up-regulated miR-129 accelerates viability and represses apoptosis of PC12 cells stimulated by Aβ25-35 in AD, which is beneficial for AD treatment.
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Affiliation(s)
- Yan-Yun Zhang
- College of Nursing, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China
| | - Hai-Lan Bao
- College of Nursing, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China
| | - Li-Xia Dong
- College of Nursing, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China
| | - Yu Liu
- College of Nursing, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China
| | - Guo-Wei Zhang
- College of Nursing, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China
| | - Feng-Mao An
- Institute of Dementia, Inner Mongolia University for Nationalities , Tongliao, P.R. China.,Inner Mongolia Key Laboratory, Mongolian Medicine Pharmacology for Cardio-Cerebral Vascular System, Tongliao, Inner Mongolia, P.R. China
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22
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Zhang W, Wang H, Liu B, Jiang M, Gu Y, Yan S, Han X, Hou AY, Tang C, Jiang Z, Shen H, Na M, Lin Z. Differential DNA Methylation Profiles in Patients with Temporal Lobe Epilepsy and Hippocampal Sclerosis ILAE Type I. J Mol Neurosci 2021; 71:1951-1966. [PMID: 33403589 DOI: 10.1007/s12031-020-01780-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 12/15/2020] [Indexed: 02/02/2023]
Abstract
Hippocampal sclerosis (HS) is one of the most prevalent pathological types of temporal lobe epilepsy (TLE), and it significantly affects patient prognoses. The methylation of DNA plays an important role in the development of epilepsy. However, few studies have focused on HS subtypes to determine DNA methylation profiles in TLE. This study aimed to determine the pathogenesis of TLE from an epigenetic perspective in patients with TLE-HS type I (TLE-HSTI) and TLE without HS (TLE-nHS) using whole-genome bisulfite sequencing (WGBS). We defined 1171 hypermethylated and 2537 hypomethylated regions and found 632 differentially methylated genes (DMG) in the promoter region that were primarily involved in the regulation of various aspects of epilepsy development. Twelve DMG overlapped with differentially expressed genes (DEG) in the promoter region, and RT-qPCR findings revealed significant overexpression of the SBNO2, CBX3, RASAL3, and TMBIM4 genes in TLE-HSTI. We present the first systematic analysis of methylation profiles of TLE-HSTI and TLE-nHS from an epigenetic perspective using WGBS. Overall, our preliminary data highlight the underlying mechanism of TLE-HSTI, providing a new perspective for guiding treatment of TLE.
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Affiliation(s)
- Wang Zhang
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Haiyang Wang
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Binchao Liu
- Department of Neurosurgery of Xing Tai People's Hospital, Xing Tai, China
| | - Miaomiao Jiang
- Department of Pathology of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Yifei Gu
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Shi Yan
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Xian Han
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Alicia Y Hou
- Lillian S. Wells Department of Neurosurgery, University of Florida, Gainesville, Florida, USA
| | - Chongyang Tang
- SanboBrain Hospital Capital Medical University, Beijing, China
| | - Zhenfeng Jiang
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Hong Shen
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China
| | - Meng Na
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China.
| | - Zhiguo Lin
- Department of Neurosurgery of the First Affiliate Hospital, Harbin Medical University, Harbin, China.
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23
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Wang B, Li Y, You C. miR-129-3p Targeting of MCU Protects Against Glucose Fluctuation-Mediated Neuronal Damage via a Mitochondrial-Dependent Intrinsic Apoptotic Pathway. Diabetes Metab Syndr Obes 2021; 14:153-163. [PMID: 33488104 PMCID: PMC7815084 DOI: 10.2147/dmso.s285179] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 12/12/2020] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Glucose fluctuations have an adverse effect on several diabetes-related complications, especially for the nervous system, but the underlying mechanisms are not clear. MicroRNAs are critical regulators of posttranscription in many physiological processes, such as apoptosis. Our study clarified the neuroprotective effects of miR-129-3p targeting mitochondrial calcium uniporter (MCU) in glucose fluctuation-mediated neuronal damage and the specific mechanisms involved. METHODS The expression of MCU and miR-129-3p was examined by real-time PCR and Western blot in the glucose fluctuation cell model. Dual-luciferase reporter assay was performed to confirm the transcriptional regulation of miR-129-3p by MCU. Fluorescent probe and assay kit assay was used to determine oxidative stress condition. Mitochondrial-dependent intrinsic apoptotic factors were examined by flow cytometry assay, enzyme-linked immunosorbent assay (ELISA), and gene and protein expression assays. RESULTS We found an upregulation of MCU and downregulation of miR-129-3p in glucose fluctuation-treated primary hippocampal neuronal cells, and miR-129-3p directly targeted MCU. miR-129-3p overexpression produced a dramatic reduction in calcium overload, reactive oxygen species (ROS) generation, GSH-to-GSSG ratio, MMP-2 expression in the mitochondrial-dependent intrinsic apoptosis pathway and an increase in MnSOD activity. Increasing MCU expression rescued the effects of miR-129-3p overexpression. miR-129-3p downregulation produced a significant increase in calcium overload, reactive oxygen species (ROS) generation, MMP-2 expression, cytochrome c release and cell apoptosis, and antioxidant N-acetyl cysteine (NAC) rescued the effects of miR-129-3p downregulation. CONCLUSION Therefore, miR-129-3p suppressed glucose fluctuation-mediated neuronal damage by targeting MCU via a mitochondrial-dependent intrinsic apoptotic pathway. The miR-129-3p/MCU axis may be a promising therapeutic target for glucose fluctuation-mediated neuronal damage.
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Affiliation(s)
- Bo Wang
- Department of Neurosurgery, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan610041, People’s Republic of China
- Department of Neurosurgery, Kunming Medical University First Affiliated Hospital, Kunming, Yunnan650032, People’s Republic of China
| | - Yang Li
- Intensive Care Unit, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan610041, People’s Republic of China
| | - Chao You
- Department of Neurosurgery, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan610041, People’s Republic of China
- Correspondence: Chao You Department of Neurosurgery, West China School of Medicine/West China Hospital of Sichuan University, Chengdu, Sichuan610041, People’s Republic of ChinaTel +86 28-85422026 Email
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24
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Fu M, Tao J, Wang D, Zhang Z, Wang X, Ji Y, Li Z. Downregulation of MicroRNA-34c-5p facilitated neuroinflammation in drug-resistant epilepsy. Brain Res 2020; 1749:147130. [DOI: 10.1016/j.brainres.2020.147130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/20/2020] [Accepted: 09/13/2020] [Indexed: 12/19/2022]
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25
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Sex differences in gene expression with galactosylceramide treatment in Cln3Δex7/8 mice. PLoS One 2020; 15:e0239537. [PMID: 33006978 PMCID: PMC7531864 DOI: 10.1371/journal.pone.0239537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 09/09/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND CLN3 disease is caused by mutations in the CLN3 gene. The purpose of this study is to discern global expression patterns reflecting therapeutic targets in CLN3 disease. METHODS Differential gene expression in vehicle-exposed mouse brain was determined after intraperitoneal vehicle/Galactosylceramide (GalCer) injections for 40 weeks with GeneChip Mouse Genome 430 2.0 arrays. RESULTS Analysis identified 66 genes in male and 30 in female brains differentially expressed in GalCer-treated versus vehicle-exposed Cln3Δex7/8 mice. Gene ontology revealed aberrations of biological function including developmental, cellular, and behavioral processes. GalCer treatment altered pathways of long-term potentiation/depression, estrogen signaling, synaptic vesicle cycle, ErbB signaling, and prion diseases in males, but prolactin signaling, selenium compound metabolism and steroid biosynthesis in females. Gene-gene network analysis highlighted networks functionally pertinent to GalCer treatment encompassing motor dysfunction, neurodegeneration, memory disorder, inflammation and astrogliosis in males, and, cataracts, inflammation, astrogliosis, and anxiety in females. CONCLUSIONS This study sheds light on global expression patterns following GalCer treatment of Cln3Δex7/8 mice. Understanding molecular effects of GalCer on mouse brain gene expression, paves the way for personalized strategies for treating this debilitating disease in humans.
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Sun W, Zhao J, Li C. Dexmedetomidine Provides Protection Against Hippocampal Neuron Apoptosis and Cognitive Impairment in Mice with Alzheimer's Disease by Mediating the miR-129/YAP1/JAG1 Axis. Mol Neurobiol 2020; 57:5044-5055. [PMID: 32839917 DOI: 10.1007/s12035-020-02069-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 08/10/2020] [Indexed: 12/31/2022]
Abstract
Alzheimer's disease (AD) is a multifactorial neurodegenerative disease that leads to progressive cognitive, memory, and learning dysfunction that affects the aging population. Dexmedetomidine (Dex) might be beneficial for postoperative cognitive function in elderly patients. However, the exact mechanism underlying the protective role of Dex against cognitive impairment requires further elucidation. The present study aims to determine whether miR-129 is involved in the protective effect of Dex against Aβ1-42-induced hippocampal neuron apoptosis and cognitive impairment in mice. In our study, Y-shaped maze and water maze tests were conducted to evaluate the cognitive function of AD mice, while neuronal apoptosis was measured by Terminal Deoxynucleotidyl Transferase-Mediated dUTP Nick-End Labeling (TUNEL) staining. The findings showed that Dex administration resulted in the enhancement of miR-129 expression with declined hippocampal neuron apoptosis and attenuated cognitive impairment in Aβ1-42-injected mice. miR-129 targeted YAP1 and disrupted its interaction with JAG1, leading to a decline in hippocampal neuron apoptosis and attenuated cognitive impairment in Aβ1-42-injected mice. In conclusion, the miR-129/YAP1/JAG1 axis could potentially be the mechanism by which Dex protects AD mice from cognitive impairment.
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Affiliation(s)
- Weiying Sun
- Department of Pharmacy, Linyi People's Hospital, No. 27, Jiefang East Road, Lanshan District, Linyi, 276000, Shandong Province, People's Republic of China
| | - Jun Zhao
- Department of Ophthalmology, Linyi People's Hospital, Linyi, 276000, People's Republic of China
| | - Chunzhi Li
- Department of Pharmacy, Linyi People's Hospital, No. 27, Jiefang East Road, Lanshan District, Linyi, 276000, Shandong Province, People's Republic of China.
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27
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Sun X, Li X, Qi H, Hou X, Zhao J, Yuan X, Ma X. MiR-21 nanocapsules promote early bone repair of osteoporotic fractures by stimulating the osteogenic differentiation of bone marrow mesenchymal stem cells. J Orthop Translat 2020; 24:76-87. [PMID: 32695607 PMCID: PMC7349941 DOI: 10.1016/j.jot.2020.04.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/10/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023] Open
Abstract
Objective The healing of osteoporotic fractures in the elderly patients is a difficult clinical problem. Currently, based on the internal fixation of fractures, the available drug treatments mainly focus on either inhibiting osteoclast function, such as bisphosphonate, calcitonin, oestrogen or promoting osteogenesis, such as parathyroid hormones. However, the availability of current antiosteoporotic drugs in promoting osteoporotic fracture healing is limited. The objective of the present study was to investigate the ability of the MiR-21/nanocapsule to enhance the early bone repair of osteoporotic fractures. Methods Based on the presence of matrix metalloproteinases that are overexpressed at the fracture site, we designed the matrix metalloproteinase–sensitive nanocapsules which were formed by in situ free radical polymerisation on the surface of MiR-21 with 2-(methacryloyloxy) ethyl phosphorylcholine and the bisacryloylated VPLGVRTK peptide. The MiR-21/nanocapsule [n (miR-21)] and O-carboxymethyl chitosan (CMCS) were mixed until they formed a gel-like material [CMCS/n (miR-21)] with good fluidity and injectability. Thirty elderly Sprague Dawley (SD) rats (female, 14-month-old, 380 ± 10 g) were subjected to bilateral removal of the ovaries (ovariectomised). All rats were subjected to bilateral bone defects (2 mm diameter) of the proximal tibia and randomly divided into three groups (groups A, B, and C): separately injected with CMCS/n (miR-21), CMCS/n (NC-miR), and saline. Micro-computed tomography (CT) imaging was performed to evaluate newly formed bone volume and connectivity. Nondecalcified histology and toluidine blue staining were performed to measure the effects of CMCS/n (miR-21) on bone repair. In vitro, the effect of n (miR-21) on osteogenic differentiation to bone marrow mesenchymal stem cells (BMSCs) which derived from the ovariectomised rat model was observed. Results The morphology of n (miR-21) was a regular spherical nanocapsule with a uniform small size (25–35 nm). The results confirmed that n (miR-21) could be efficiently phagocytosed by BMSCs and released in the cytoplasm to promote osteogenesis. The expression level of alkaline phosphatase and Runt-related transcription factor 2 mRNA in the n (miR-21) group was higher than that in the n (NC-miR) group. Animal experiments proved that CMCS/n (miR-21) produced better bone repair compared with the CMCS/n (NC-miR) group in the early stages of fracture healing at 4 weeks. In the late stage of fracture healing (8 weeks), micro-CT quantitative analysis showed that the new bone trabeculae in the CMCS/n (miR-21) group has decreased compared with the CMCS/n (NC-miR) group. In the CMCS/n (miR-21) group, the new cancellous bone had been absorbed, and the process of bone healing was almost completed. In contrast, the new bone in the CMCS/n (NC-miR) and the control groups was still in the healing process. Conclusion The cytological tests confirmed that n (miR-21) can promote osteogenic differentiation of BMSCs derived from the osteoporosis rat model. Furthermore, the results of animal tests demonstrated that local injection of CMCS/n (miR-21) promoted the early healing of osteoporotic bone defects. Consequently CMCS/n (miR-21) promoted the bone repair process to enter the moulding phase earlier. The translational potential of this article CMCS/n (miR-21) can be widely applied to elderly patients with osteoporotic fractures. This method can help patients with osteoporotic fractures recover earlier and avoid serious complications. It provides a potential approach for the clinical treatment of osteoporotic fractures in the elderly.
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Affiliation(s)
- Xiaolei Sun
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.,Department of Orthopaedics, Tianjin Hospital, Tianjin, 300211, China
| | - Xueping Li
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Hongzhao Qi
- Institute for Translational Medicine, Qingdao University, Qingdao, 266021, China
| | - Xin Hou
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Jin Zhao
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Xubo Yuan
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Xinlong Ma
- Department of Orthopaedics, Tianjin Hospital, Tianjin, 300211, China
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Danbaran GR, Aslani S, Sharafkandi N, Hemmatzadeh M, Hosseinzadeh R, Azizi G, Jadidi-Niaragh F, Babaie F, Mohammadi H. How microRNAs affect the PD-L1 and its synthetic pathway in cancer. Int Immunopharmacol 2020; 84:106594. [PMID: 32416456 DOI: 10.1016/j.intimp.2020.106594] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/27/2020] [Accepted: 05/08/2020] [Indexed: 12/17/2022]
Abstract
Programmed cell death-ligand 1 (PD-L1) is a glycoprotein that is expressed on the cell surface of both hematopoietic and nonhematopoietic cells. PD-L1 play a role in the immune tolerance and protect self-tissues from immune system attack. Dysfunction of this molecule has been highlighted in the pathogenesis of tumors, autoimmunity, and infectious disorders. MicroRNAs (miRNAs) are endogenous molecules that are classified as small non-coding RNA with approximately 20-22 nucleotides (nt) length. The function of miRNAs is based on complementary interactions with target mRNA via matching completely or incompletely. The result of this function is decay of the target mRNA or preventing mRNA translation. In the past decades, several miRNAs have been discovered which play an important role in the regulation of PD-L1 in various malignancies. In this review, we discuss the effect of miRNAs on PD-L1 expression and consider the effect of miRNAs on the synthetic pathway of PD-L1, especially during cancers.
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Affiliation(s)
| | - Saeed Aslani
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nadia Sharafkandi
- Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Maryam Hemmatzadeh
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ramin Hosseinzadeh
- Department of Medical Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Farhad Jadidi-Niaragh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Immunology, School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farhad Babaie
- Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Hamed Mohammadi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran; Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran.
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Zhang D, Cao Y, Zuo Y, Wang Z, Mi X, Tang W. Integrated bioinformatics analysis reveals novel hub genes closely associated with pathological mechanisms of immunoglobulin A nephropathy. Exp Ther Med 2019; 18:1235-1245. [PMID: 31316619 PMCID: PMC6601137 DOI: 10.3892/etm.2019.7686] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Accepted: 05/09/2019] [Indexed: 02/06/2023] Open
Abstract
Immunoglobulin A (IgA) nephropathy (IgAN) is the most common glomerular disease. The major pathological changes associated with it affect cell proliferation, fibrosis, apoptosis, inflammation and extracellular matrix (ECM) organization. However, the molecular events underlying IgAN remain to be fully elucidated. In the present study, an integrated bioinformatics analysis was applied to further explore novel potential gene targets for IgAN. The mRNA expression profile datasets GSE93798 and GSE37460 were downloaded from the Gene Expression Omnibus database. After data preprocessing, differentially expressed genes (DEGs) were identified. Gene Ontology (GO) enrichment analysis of DEGs was performed. Protein-protein interaction (PPI) networks of the DEGs were built with the STRING online search tool and visualized by using Cytoscape, and hub genes were identified through the degree of connectivity in the PPI. The hub genes were subjected to Kyoto Encyclopedia of Genes and Genomes pathway analysis, and co-expression analysis was performed. A total of 298 DEGs between IgAN and control groups were identified, and 148 and 150 of these DEGs were upregulated and downregulated, respectively. The DEGs were enriched in distinct GO terms for Biological Process, including cell growth, epithelial cell proliferation, ERK1 and ERK2 cascades, regulation of apoptotic signaling pathway and ECM organization. The top 10 hub genes were then screened from the PPI network by Cytoscape. As novel hub genes, Fos proto-oncogene, AP-1 transcription factor subunit and early growth response 1 were determined to be closely associated with apoptosis and cell proliferation in IgAN. Tumor protein 53, integrin subunit β2 and fibronectin 1 may also be involved in the occurrence and development of IgAN. Co-expression analysis suggested that these hub genes were closely linked with each other. In conclusion, the present integrated bioinformatics analysis provided novel insight into the molecular events and novel candidate gene targets of IgAN.
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Affiliation(s)
- Dongmei Zhang
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
| | - Yiling Cao
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
| | - Yongdi Zuo
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
| | - Zheng Wang
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
| | - Xuhua Mi
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
| | - Wanxin Tang
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu, Sichuan 610000, P.R. China
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Uncovering the Pharmacological Mechanism of Chaibei Zhixian Decoction on Epilepsy by Network Pharmacology Analysis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:3104741. [PMID: 31214268 PMCID: PMC6535852 DOI: 10.1155/2019/3104741] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/29/2019] [Accepted: 04/21/2019] [Indexed: 02/07/2023]
Abstract
Objective Epilepsy is a neuronal disorder that is characterized by epileptic seizures and linked with abnormal neural functioning in the brain. Traditional Chinese medicine (TCM) formula Chaibei Zhixian decoction (CZD) has been widely used for epilepsy in China while the pharmacological mechanisms are still unclear. In the present study, systematic and comprehensive network pharmacology was utilized for the first time to reveal the potential pharmacological mechanisms of CZD on epilepsy. Methods Traditional Chinese Medicine Systems Pharmacology (TCMSP) database and analysis platform was utilized for the development of an ingredients-targets database. After identifying epileptic targets of CZD, their interaction with other proteins was estimated based on protein-protein interaction network created from STITCH and gene ontology (GO) enrichment analysis utilizing Cytoscape-ClueGO plugin. Results CZD formula was found to have 643 chemical ingredients, and the potential protein targets of these ingredients were 5230, as retrieved from TCMSP database. Twenty-six protein targets were found to be associated with epilepsy. Thirteen hub genes were regulated by CZD in epilepsy, including estradiol, ESR1, ESR2, SRC, CTNNB1, EP300, MAPK1, MAPK3, SP1, BRCA1, NCOA3, CHRM1, and GSK3B. The results of GO terms analysis showed that 8 GO terms were recovered in the form of 3 clusters, including negative regulation of protein kinase B signaling, positive regulation of interleukin-1 production, and microvillus assembly. Conclusions Network pharmacology approach provides better understanding of the underlying pharmacological mechanisms of CZD on epilepsy. Estradiol, ESR1, ESR2, CTNNB1, EP300, MAPK1, MAPK3, BRCA1, and GSK3B are likely to be important molecules regulated by CZD in treatment of epilepsy. Negative regulation of protein kinase B signaling may play vital roles in the treatment of epilepsy by CZD.
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Sun Q, Zeng Q, Chen Y, Zhang M, Wei L, Chen P. Long intergenic noncoding RNA p21 suppresses the apoptosis of hippocampus neurons in streptozotocin‐diabetic mice by sponging microRNA‐221 through upregulation of FOS. J Cell Physiol 2019; 234:21113-21125. [PMID: 31081202 DOI: 10.1002/jcp.28714] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 01/03/2023]
Affiliation(s)
- Qin Sun
- Department of Geriatrics Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu China
| | - Qing‐Cui Zeng
- Department of Geriatrics Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu China
| | - Yan‐Qiu Chen
- Department of Neurology People's Hospital of Chongqing Yubei District Chongqing China
| | - Min Zhang
- Department of Geriatrics Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu China
| | - Ling‐Ling Wei
- Center of Diabetes Mellitus Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu China
- School of Medicine, University of Electronic Science and Technology of China Chengdu China
| | - Ping Chen
- Department of Geriatrics Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital Chengdu China
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MiR-15b is a key regulator of proliferation and apoptosis of chondrocytes from patients with condylar hyperplasia by targeting IGF1, IGF1R and BCL2. Osteoarthritis Cartilage 2019; 27:336-346. [PMID: 30521861 DOI: 10.1016/j.joca.2018.09.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 09/10/2018] [Accepted: 09/13/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study aimed to explore potential microRNAs (miRNAs), which participate in the pathological process of condylar hyperplasia (CH) through targeting specific proliferation- and apoptosis- related genes of chondrocytes. METHODS Insulin-like growth factor 1 (IGF1), IGF1 receptor (IGF1R) and B-cell CLL/lymphoma 2 (BCL2) in CH cartilage were detected by real-time polymerase chain reaction (PCR), Western blot, immunohistochemistry and immunofluorescence. MiRanda and TargetScanS algorithms were used to predict certain miRNAs in CH chondrocytes concurrently modulating the above three genes. MiR-15b was screened and identified using real-time PCR. After transfection of miR-15b mimics or inhibitor into CH chondrocytes, expression of the above three genes was detected by real-time PCR and western blot, meanwhile, cell proliferation and apoptosis was examined by CCK8, cell cycle assays, flow cytometry and Hoechst staining. Dual luciferase activity was performed to identify the direct regulation of miR-15b on IGF1, IGF1R and BCL2. RESULTS Expression of IGF1, IGF1R and BCL2 increased in CH cartilage. Seven microRNAs concurrently correlated with IGF1, IGF1R and BCL2. Among them, only miR-15b significantly changed in CH chondrocytes. Overexpression of miR-15b in CH chondrocytes suppressed the expression of IGF1, IGF1R and BCL2, while it increased when miR-15b was knockdown. Furthermore, miR-15b suppressed their expression by directly binding to its 3'-UTR in these cells. Besides, miR-15b hampered chondrocytes proliferation through targeting IGF1 and IGF1R and accelerated chondrocytes apoptosis through targeting BCL2. CONCLUSION Suppressed miR-15b contributed to enhanced proliferation capacity and weakened apoptosis of chondrocytes through augmentation of IGF1, IGF1R and BCL2, thereby resulting in development of CH.
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Zhao Z, Li X, Zou D, Lian Y, Tian S, Dou Z. Expression of microRNA-21 in osteoporotic patients and its involvement in the regulation of osteogenic differentiation. Exp Ther Med 2018; 17:709-714. [PMID: 30651854 PMCID: PMC6307376 DOI: 10.3892/etm.2018.6998] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 11/09/2018] [Indexed: 12/15/2022] Open
Abstract
Expression of microRNA-21 in bone tissue and serum of patients with osteoporosis (OP) and its involvement in the regulation of osteogenic differentiation of rat bone marrow mesenchymal stem cells (BMSCs) were investigated. Bone tissue and serum were collected from 48 patients with OP and 48 normal subjects. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of six microRNAs. Among these microRNAs, the expression level of microRNA-21 in bone tissue and serum of OP patients was the lowest. In addition, BMSCs of SD rats were isolated and cultured. Subculture was performed 3 times, transfection of microRNA-21 was performed and osteogenic differentiation was induced. Control group [negative control (NC)] was transfected with microRNA-21 mimics followed by osteogenic induction. Experimental groups were transfected with microRNA-21 analogue (mimics) and microRNA-21 inhibitor (inhibitor) followed by osteogenic induction. Ten days after osteogenic induction, alkaline phosphatase (ALP) staining and alizarin red staining were performed to measure the mineralized stained area and the number of mineralized nodules in each treatment group. RT-qPCR was used to detect the expression of osteogenic genes in each group of cells. RT-qPCR results showed that microRNA-21 expression was lower in bone tissue and serum of patients with OP than that of normal subjects. Moreover, compared with control group, BMSCs showed increased stained mineralized areas, deeper color and increased number of mineralized nodules. In addition, increased mRNA expression of osteogenic genes was evident after microRNA-21 mimics transfection and osteogenic induction (p<0.05). Compared with control group, BMSCs showed decreased stained mineralized areas, lighter color, decreased number of mineralized nodules, and decreased mRNA expression of osteogenic genes after microRNA-21 inhibitor transfection and osteogenic induction (p<0.05). MicroRNA-21 is expressed at low level in bone tissue and serum in patients with OP, and microRNA-21 can promote osteogenic differentiation of BMSCs. Our study provided theoretical basis for drug treatment of OP.
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Affiliation(s)
- Zhongfu Zhao
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Xiaoguang Li
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Dexun Zou
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161006, P.R. China
| | - Yongyun Lian
- Department of Orthopaedics, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
| | - Shaohua Tian
- Department of Orthopaedics, The Third Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang 161000, P.R. China
| | - Zhi Dou
- Department of Orthopaedics (Ⅱ), The First Hospital of Qiqihar City, Qiqihar, Heilongjiang 161005, P.R. China
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