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Yuan R, Wu C. YTHDF1-mediated sphingosine kinase 2 upregulation alleviates bupivacaine-induced neurotoxicity via the PI3K/AKT axis. Hum Exp Toxicol 2024; 43:9603271231218707. [PMID: 38487884 DOI: 10.1177/09603271231218707] [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] [Indexed: 03/19/2024]
Abstract
BACKGROUND Bupivacaine (BUP), a long-acting local anesthetic, has been widely used in analgesia and anesthesia. However, evidence strongly suggests that excessive application of BUP may lead to neurotoxicity in neurons. Sphingosine kinase 2 (SPHK2) has been reported to exert neuroprotective effects. In this study, we intended to investigate the potential role and mechanism of SPHK2 in BUP-induced neurotoxicity in dorsal root ganglion (DRG) neurons. METHODS DRG neurons were cultured with BUP to simulate BUP-induced neurotoxicity in vitro. CCK-8, LDH, and flow cytometry assays were performed to detect the viability, LDH activity, and apoptosis of DRG neurons. RT-qPCR and western blotting was applied to measure gene and protein expression. Levels. MeRIP-qPCR was applied for quantification of m6A modification. RIP-qPCR was used to analyze the interaction between SPHK2 and YTHDF1. RESULTS SPHK2 expression significantly declined in DRG neurons upon exposure to BUP. BUP challenge substantially reduced the cell viability and increased the apoptosis rate in DRG neurons, which was partly abolished by SPHK2 upregulation. YTHDF1, an N6-methyladenosine (m6A) reader, promoted SPHK2 expression in BUP-treated DRG neurons in an m6A-dependent manner. YTHDF1 knockdown partly eliminated the increase in SPHK2 protein level and the protection against BUP-triggered neurotoxicity in DRG neurons mediated by SPHK2 overexpression. Moreover, SPHK2 activated the PI3K/AKT signaling to protect against BUP-induced cytotoxic effects on DRG neurons. CONCLUSIONS In sum, YTHDF1-mediated SPHK2 upregulation ameliorated BUP-induced neurotoxicity in DRG neurons via promoting activation of the PI3K/AKT signaling pathway.
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Affiliation(s)
- Ru Yuan
- Department of Anesthesiology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Chunxia Wu
- Department of Anesthesiology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
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2
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Gao X, Li S, Yang Y, Yang S, Yu B, Zhu Z, Ma T, Zheng Y, Wei B, Hao Y, Wu H, Zhang Y, Guo L, Gao X, Wei Y, Xue B, Li J, Feng X, Lu L, Xia B, Huang J. A Novel Magnetic Responsive miR-26a@SPIONs-OECs for Spinal Cord Injury: Triggering Neural Regeneration Program and Orienting Axon Guidance in Inhibitory Astrocytic Environment. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304487. [PMID: 37789583 PMCID: PMC10646239 DOI: 10.1002/advs.202304487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/12/2023] [Indexed: 10/05/2023]
Abstract
Addressing the challenge of promoting directional axonal regeneration in a hostile astrocytic scar, which often impedes recovery following spinal cord injury (SCI), remains a daunting task. Cell transplantation is a promising strategy to facilitate nerve restoration in SCI. In this research, a pro-regeneration system is developed, namely miR-26a@SPIONs-OECs, for olfactory ensheathing cells (OECs), a preferred choice for promoting nerve regeneration in SCI patients. These entities show high responsiveness to external magnetic fields (MF), leading to synergistic multimodal cues to enhance nerve regeneration. First, an MF stimulates miR-26a@SPIONs-OECs to release extracellular vesicles (EVs) rich in miR-26a. This encourages axon growth by inhibiting PTEN and GSK-3β signaling pathways in neurons. Second, miR-26a@SPIONs-OECs exhibit a tendency to migrate and orientate along the direction of the MF, thereby potentially facilitating neuronal reconnection through directional neurite elongation. Third, miR-26a-enriched EVs from miR-26a@SPIONs-OECs can interact with host astrocytes, thereby diminishing inhibitory cues for neurite growth. In a rat model of SCI, the miR-26a@SPIONs-OECs system led to significantly improved morphological and motor function recovery. In summary, the miR-26a@SPIONS-OECs pro-regeneration system offers innovative insights into engineering exogenous cells with multiple additional cues, augmenting their efficacy for stimulating and guiding nerve regeneration within a hostile astrocytic scar in SCI.
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Affiliation(s)
- Xue Gao
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Shengyou Li
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Yujie Yang
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Shijie Yang
- Department of NeurosurgeryThe Second Affiliated Hospital of Xi'an Jiao Tong UniversityXi'an710032P. R. China
| | - Beibei Yu
- Department of NeurosurgeryThe Second Affiliated Hospital of Xi'an Jiao Tong UniversityXi'an710032P. R. China
| | - Zhijie Zhu
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Teng Ma
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Yi Zheng
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Bin Wei
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Yiming Hao
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Haining Wu
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Yongfeng Zhang
- Department of NeurosurgeryThe Second Affiliated Hospital of Xi'an Jiao Tong UniversityXi'an710032P. R. China
| | - Lingli Guo
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Xueli Gao
- School of Ecology and EnvironmentNorthwestern Polytechnical UniversityXi'an710072P. R. China
| | - Yitao Wei
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Borui Xue
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Jianzhong Li
- Department of Thoracic SurgeryThe Second Affiliated Hospital of Xi'an Jiao Tong UniversityXi'an710032P. R. China
| | - Xue Feng
- Department of Cell BiologySchool of MedicineNorthwest UniversityXi'an710032P. R. China
| | - Lei Lu
- State Key Laboratory of Military StomatologyNational Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesDepartment of Oral Anatomy and Physiology and TMDSchool of Stomatologythe Fourth Military Medical UniversityXi'an710032P. R. China
| | - Bing Xia
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
| | - Jinghui Huang
- Department of OrthopaedicsXijing HospitalFourth Military Medical UniversityXi'an710032P. R. China
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LncRNA OIP5-AS1 Mitigates Bupivacaine-Induced Neurotoxicity in Dorsal Root Ganglion Neurons Through Regulating NFAT5 Expression via Sponging miR-34b. Neurotox Res 2022; 40:2253-2263. [PMID: 36074257 DOI: 10.1007/s12640-022-00567-7] [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: 04/25/2022] [Revised: 06/16/2022] [Accepted: 08/19/2022] [Indexed: 12/31/2022]
Abstract
Bupivacaine (BUP), which is widely used in anesthesia, can cause neurotoxicity and neurological abnormalities. This work intended to study the function of long non-coding RNA (lncRNA) OIP5 antisense RNA 1 (OIP5-AS1) in BUP-triggered neurotoxicity. OIP5-AS1, microRNA (miR)-34b, and nuclear factor of activated T cells 5 (NFAT5) levels were examined via real-time quantitative PCR (RT-qPCR). Cell proliferation, caspase-3 activity, and apoptosis were assessed via 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT), caspase-3 activity, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assays. The regulatory relationships between miR-34b and OIP5-AS1 or NFAT5 were validated via RNA binding protein immunoprecipitation (RIP) and dual-luciferase reporter assays. Our data demonstrated that OIP5-AS1 and NFAT5 levels were downregulated and miR-34b was upregulated upon exposure to BUP. Functional assays implied that the OIP5-AS1 deficiency impeded cell proliferation and enhanced the apoptosis of DRG neurons, while OIP5-AS1 addition reversed these changes. Moreover, OIP5-AS1 could bind to miR-34b and OIP5-AS1 regulated BUP-induced neurotoxicity via miR-34b. Besides, miR-34b could directly interact with NFAT5. Augmentation of miR-34b impeded cell proliferation and expedited the apoptosis and caspase-3 activity, while NFAT5 addition neutralized these impacts. Finally, it was verified that OIP5-AS1 could upregulate NFAT5 through sponging miR-34b. In sum, our results disclosed that OIP5-AS1 ameliorated BUP-caused neurotoxicity via regulating the miR-34b/NFAT5 axis, suggesting that OIP5-AS1 might be a promising therapeutic target for the treatment of BUP-induced neurotoxicity.
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Zhang L, Zhang L, Guo F. MiRNA-494-3p Regulates Bupivacaine-Induced Neurotoxicity by the CDK6-PI3K/AKT Signaling. Neurotox Res 2021; 39:2007-2017. [PMID: 34652691 DOI: 10.1007/s12640-021-00427-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 12/28/2022]
Abstract
Bupivacaine (BUP) is a long-acting amide local anesthetic that may induce strong neurotoxicity and neurological complications. In this study, we elucidate the influence of microRNA-494-3p (miR-494-3p) in BUP-induced neurotoxicity in primary mouse hippocampal neuronal cells. In this study, primary hippocampal neurons were isolated from neonatal C57BL/6 mice. The isolated neurons were treated with various doses of BUP. MTT assay was conducted to analyze neuronal viability. Gene expression measurement was done by RT-qPCR. The impact of miR-494-3p in BUP-mediated neural injury was examined using TUNEL, flow cytometry, western blotting, and ROS activity detection. The regulatory relationship between miR-494-3p and cyclin-dependent kinases 4 and 6 (CDK6) was identified using a luciferase reporter assay. BUP treatment led to neurotoxicity and miR-494-3p upregulation in primary cultured hippocampal neurons. Functionally, miR-494-3p depletion alleviated neuronal apoptosis and oxidative damage induced by BUP. We verified that miR-494-3p targeted and negatively modulated CDK6. MiR-494-3p depletion also activated PI3K/AKT signaling by elevating CDK6 expression in BUP-treated neurons. Furthermore, CDK6 knockdown or PI3K/AKT inactivation attenuated the neuroprotective role of miR-494-3p depletion. Silencing miR-494-3p exerts neuroprotective function in hippocampal neuronal cells against BUP-induced injury by the CDK6-PI3K/AKT pathway.
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Affiliation(s)
- Licheng Zhang
- Deparment of Anesthesia Resuscitation Room, Zhongshan Hospital Xiamen University, Xiamen, Fujian, 361004, China
| | - Lifeng Zhang
- Deparment of Surgical Anesthesiology, Zhongshan Hospital Xiamen University, Xiamen, Fujian, 361004, China
| | - Fengying Guo
- Department of Tumor Radiotherapy, Zhongshan Hospital Xiamen University, Siming District, 1854 Xinjing Garden, Luling Road, Xiamen, 361004, Fujian, China.
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Melatonin Alleviates Radiculopathy Against Apoptosis and NLRP3 Inflammasomes Via the Parkin-Mediated Mitophagy Pathway. Spine (Phila Pa 1976) 2021; 46:E859-E868. [PMID: 34398134 DOI: 10.1097/brs.0000000000003942] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Animal experimental study with intervention. OBJECTIVE To investigate the effect of melatonin on rat radiculopathy model and dorsal root ganglion (DRG) cells, and to elucidate the underlying mechanism. SUMMARY OF BACKGROUND DATA Melatonin has a well-documented efficacy in intervertebral disc degeneration (IVDD) and low back pain. IVDD can also lead to other complications such as disc herniation which will cause radiculopathy. Herniated nucleus pulposus (NP) induced apoptosis and NLR pyrin domain containing 3 (NLRP3) activation in DRG. However, the effect and underlying mechanism of melatonin on radiculopathy and DRG cells are still unclear. METHODS Rat radiculopathy model was induced by implanting NP tissue from the tail disc of the same rat into the left L4/5 inter-laminar space near the left DRG. Melatonin was injected intraperitoneally in the treated group to test its function. Apoptosis was determined by Tunnel staining and flow cytometry. NLRP3 inflammasome activation was determined by levels of NLRP3, ASC, GSMDM-N, IL-1β, and Caspase-1. Mitophagy was determined by levels of Parkin, Beclin-1, p62, and LCB-II. Mitophagy was blocked by treatment with Parkin-si or cyclosporine A (CsA). RESULTS NLRP3 was significantly upregulated in DRG of rat radiculopathy model; moreover, melatonin markedly decreased pain behavior in rat radiculopathy model. Furthermore, melatonin treatment decreases the incidence of apoptosis in DRG cells. Melatonin also promotes mitophagy and inhibits NLRP3 inflammasomes in DRG cells. In addition, mitophagy was blocked by treatment with Parkin-si and CsA. Both Parkin-si and CsA attenuated melatonin's inhibitory effect on apoptosis and the NLRP3 inflammasome, indicating that the beneficial effects of melatonin in DRG cells are mediated through the Parkin-mediated mitophagy. CONCLUSION Melatonin alleviates radiculopathy against apoptosis and NLRP3 inflammasomes by promoting Parkin-mediated mitophagy, which may help us provide a potential target for the treatment of radiculopathy.Level of Evidence: N/A.
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Chen Y, Tian Z, He L, Liu C, Wang N, Rong L, Liu B. Exosomes derived from miR-26a-modified MSCs promote axonal regeneration via the PTEN/AKT/mTOR pathway following spinal cord injury. Stem Cell Res Ther 2021; 12:224. [PMID: 33820561 PMCID: PMC8022427 DOI: 10.1186/s13287-021-02282-0] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 03/11/2021] [Indexed: 12/16/2022] Open
Abstract
Background Exosomes derived from the bone marrow mesenchymal stem cell (MSC) have shown great potential in spinal cord injury (SCI) treatment. This research was designed to investigate the therapeutic effects of miR-26a-modified MSC-derived exosomes (Exos-26a) following SCI. Methods Bioinformatics and data mining were performed to explore the role of miR-26a in SCI. Exosomes were isolated from miR-26a-modified MSC culture medium by ultracentrifugation. A series of experiments, including assessment of Basso, Beattie and Bresnahan scale, histological evaluation, motor-evoked potential recording, diffusion tensor imaging, and western blotting, were performed to determine the therapeutic influence and the underlying molecular mechanisms of Exos-26a in SCI rats. Results Exos-26a was shown to promote axonal regeneration. Furthermore, we found that exosomes derived from miR-26a-modified MSC could improve neurogenesis and attenuate glial scarring through PTEN/AKT/mTOR signaling cascades. Conclusions Exosomes derived from miR-26a-modified MSC could activate the PTEN-AKT-mTOR pathway to promote axonal regeneration and neurogenesis and attenuate glia scarring in SCI and thus present great potential for SCI treatment. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02282-0.
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Affiliation(s)
- Yuyong Chen
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China
| | - Zhenming Tian
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China
| | - Lei He
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China
| | - Can Liu
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China
| | - Nangxiang Wang
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China
| | - Limin Rong
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China. .,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China. .,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.
| | - Bin Liu
- Department of Spine Surgery, The 3rd Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, Guangdong, China. .,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China. .,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, 510630, Guangdong, China.
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7
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Wu Y, Rong W, Jiang Q, Wang R, Huang H. Downregulation of lncRNA GAS5 Alleviates Hippocampal Neuronal Damage in Mice with Depression-Like Behaviors Via Modulation of MicroRNA-26a/EGR1 Axis. J Stroke Cerebrovasc Dis 2021; 30:105550. [PMID: 33341564 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105550] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/07/2020] [Accepted: 12/09/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Accumulating evidences have demonstrated the roles of several long non-coding RNAs (lncRNAs) in depression. We aim to examine the capabilities of lncRNA growth arrest-specific transcript 5 (GAS5) on mice with depression-like behaviors and the mechanism of action. METHODS Fifty-six healthy mice were selected for model establishment. Morris water maze test and trapeze test were performed for evaluating learning and memory ability. The binding relationship between lncRNA GAS5 and microRNA-26a (miR-26a) and the target relationship between miR-26a and EGR1 were verified by dual-luciferase reporter gene assay. The apoptosis of neurons in the hippocampal CA1 region of mice was detected by TUNEL staining. The expression of inflammatory factors, lncRNA GAS5, miR-26a, early growth response gene 1 (EGR1), phosphoinositide 3-kinase (PI3K)/protein kinase B (AKT) pathway- and apoptosis-related factors in hippocampal tissues was tested by RT-qPCR and western blot analysis. RESULTS miR-26a expression was down-regulated while EGR1 and lncRNA GAS5 expression were up-regulated in hippocampal tissues of mice with depression-like behaviors. LncRNA GAS5 specifically bound to miR-26a and miR-26a targeted EGR1. Silencing of lncRNA GAS5 curtailed the release of inflammatory factors and the apoptosis of hippocampal neuron of mice with depression-like behaviors. EGR1 suppressed PI3K/AKT pathway activation to promote the release of inflammatory factors and the apoptosis of hippocampal neurons in mice with depression-like behaviors. CONCLUSION Our study provides evidence that silencing of lncRNA GAS5 could activate PI3K/AKT pathway to protect hippocampal neurons against damage in mice with depression-like behaviors by regulating the miR-26a/EGR1 axis.
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Affiliation(s)
- Yigao Wu
- Department of Medical Psychology, The First Affiliated Hospital of Wannan Medical College, No. 2, Zheshan West Road, Wuhu 241001, Anhui, PR China.
| | - Wei Rong
- Department of Clinical Medical Psychology, The Second People's Hospital of Wuhu, Wuhu 241001, Anhui, PR China.
| | - Qin Jiang
- Department of Medical Psychology, The First Affiliated Hospital of Wannan Medical College, No. 2, Zheshan West Road, Wuhu 241001, Anhui, PR China.
| | - Ruiquan Wang
- Department of Medical Psychology, The First Affiliated Hospital of Wannan Medical College, No. 2, Zheshan West Road, Wuhu 241001, Anhui, PR China.
| | - Huilan Huang
- Department of Medical Psychology, The First Affiliated Hospital of Wannan Medical College, No. 2, Zheshan West Road, Wuhu 241001, Anhui, PR China.
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Qiu Y, Zhao Z, Chen Q, Zhang B, Yang C. MiR-495 regulates cell proliferation and apoptosis in H 2O 2 stimulated rat spinal cord neurons through targeting signal transducer and activator of transcription 3 (STAT3). ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:461. [PMID: 33850858 PMCID: PMC8039649 DOI: 10.21037/atm-21-102] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background MicroRNA-495 (miR-495) is a post-translational modulator that performs several functions, and it is involved in several disease states. On the other hand, the physiological functions of miR-495 in H2O2 stimulated mouse spinal cord neuronal dysfunction have not yet been fully understood. Methods In this study, we speculated that miR-495 may regulate the expression of STAT3 in the processes of neuronal proliferation and apoptosis following spinal cord injury (SCI). Cell viability was assessed with methyl thiazolyl tetrazolium (MTT) assay. Caspase-3 activity was assayed with ELISA. Cellular apoptotic changes were measured with TUNEL assay. Intracellular ROS production was determined by measuring uptake of dichlorodihydrofluorescein diacetate (DCFH-DA; PCR was used to assay the mRNA expression of STAT3 gene bearing predicted targeting positions for miR-495, while qRT-PCR was used to measure miR-495 mRNA. Results The results demonstrated that treatment of SCNs with H2O2 led to a significant decrease in cell survival, while it enhanced apoptosis. The H2O2 treatment induced cell membrane dysfunction, and increased ROS levels and DNA damage. Interestingly, the expression of miR-495 was markedly suppressed when SCNs were exposed to H2O2. However, miR-495 overexpression reversed H2O2-induced cytotoxicity and apoptosis in SCNs. Moreover, H2O2 exposure elevated protein and mRNA concentrations of STAT3 in SCNs. Bioinformatics analysis showed likely binding domains of miR-495 in the 3'-untranslated regions of STAT3 in SCNs. MiR-495 loss-of-function and gain-of-function significantly up-regulated and down-regulated both STAT3 mRNA and protein expressions, respectively, in SCNs. Conclusions miR-495 overexpression inhibited H2O2-induced SCN dysfunction. This mechanism was mediated through the down-regulation of STAT3 expression.
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Affiliation(s)
- Yunfeng Qiu
- Department of Orthopedic, Luhe Hospital Affiliated of Yangzhou University Medical College, Nanjing, China
| | - Ziru Zhao
- Department of Orthopedics, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qi Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Bin Zhang
- Department of Orthopedics, The Fourth Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Chuanjun Yang
- Department of Orthopedics, Anting Hospital, Shanghai, China
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9
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Zhao B, Qian M, Zhang Y, Yin F. Retracted: Stem cells from human exfoliated deciduous teeth transmit microRNA-26a to protect rats with experimental intracerebral hemorrhage from cerebral injury via suppressing CTGF. Brain Res Bull 2021; 168:146-155. [PMID: 33333175 DOI: 10.1016/j.brainresbull.2020.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 11/19/2020] [Accepted: 12/10/2020] [Indexed: 12/17/2022]
Abstract
OBJECTIVE A large number of studies have shown that stem cells from human exfoliated deciduous teeth (SHED) has a protective effect on brain damage, but its specific mechanism is unclear. This research focused on the effect of microRNA (miR)-26a that transmitted by SHED in intracerebral hemorrhage (ICH). METHODS SHED were extracted from deciduous teeth of healthy children and miR-26a expression in SHED was altered through transfection, and then the SHED were conducted with neuron differentiated induction, expression of β3 tubulin, MAP-2 and glial fibrillary acidic protein (GFAP), number of dendritic spines and cell proliferation were detected. ICH rat models were established by stereotactic injection of collagenase VII into the left striatum and the modeled rats were injected with miR-26a mimic or inhibitor-transfected SHED suspension. Then, the brain water content, blood-brain barrier permeability, pathological changes, and injury and apoptosis in the nervous cells in brain were assessed. The expression of miR-26a and CTGF in SHED and rats' brain tissues was evaluated and the target relation between miR-26a and CTGF was detected. RESULTS In SHED after induction, upregulated miR-26a could increase number of dendritic spines, cell proliferation, and expression of β3 tubulin, MAP-2 and GFAP, and restrain CTGF expression. In rat models, SHED engineered to overexpress miR-26a could attenuate brain water content, Evans blue content, apoptosis, pathological injury and expression of CTGF and Bax, while promoted number of Nissl bodies and expression of Bcl-2 in the nervous cells in brain in ICH rats. Furthermore, miR-26a competitively bound to CTGF. CONCLUSION Our findings provided the evidence that SHED could transmit miR-26a to protect ICH rats from cerebral injury by repressing CTGF, which may contribute to ICH therapy.
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Affiliation(s)
- Bin Zhao
- Department of Neurosurgery, The Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Min Qian
- Department of Neonatology, The Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Yan Zhang
- Department of Thoracic Surgery, The Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China
| | - Fei Yin
- Department of Neurology, The Second Hospital of Jilin University, Changchun, 130041, Jilin Province, China.
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10
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Segaran RC, Chan LY, Wang H, Sethi G, Tang FR. Neuronal Development-Related miRNAs as Biomarkers for Alzheimer's Disease, Depression, Schizophrenia and Ionizing Radiation Exposure. Curr Med Chem 2021; 28:19-52. [PMID: 31965936 DOI: 10.2174/0929867327666200121122910] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 09/30/2019] [Accepted: 10/22/2019] [Indexed: 11/22/2022]
Abstract
Radiation exposure may induce Alzheimer's disease (AD), depression or schizophrenia. A number of experimental and clinical studies suggest the involvement of miRNA in the development of these diseases, and also in the neuropathological changes after brain radiation exposure. The current literature review indicated the involvement of 65 miRNAs in neuronal development in the brain. In the brain tissue, blood, or cerebral spinal fluid (CSF), 11, 55, or 28 miRNAs are involved in the development of AD respectively, 89, 50, 19 miRNAs in depression, and 102, 35, 8 miRNAs in schizophrenia. We compared miRNAs regulating neuronal development to those involved in the genesis of AD, depression and schizophrenia and also those driving radiation-induced brain neuropathological changes by reviewing the available data. We found that 3, 11, or 8 neuronal developmentrelated miRNAs from the brain tissue, 13, 16 or 14 miRNAs from the blood of patient with AD, depression and schizophrenia respectively were also involved in radiation-induced brain pathological changes, suggesting a possibly specific involvement of these miRNAs in radiation-induced development of AD, depression and schizophrenia respectively. On the other hand, we noted that radiationinduced changes of two miRNAs, i.e., miR-132, miR-29 in the brain tissue, three miRNAs, i.e., miR- 29c-5p, miR-106b-5p, miR-34a-5p in the blood were also involved in the development of AD, depression and schizophrenia, thereby suggesting that these miRNAs may be involved in the common brain neuropathological changes, such as impairment of neurogenesis and reduced learning memory ability observed in these three diseases and also after radiation exposure.
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Affiliation(s)
- Renu Chandra Segaran
- Radiation Physiology Lab, Singapore Nuclear Research and Safety Initiative, National University of Singapore, CREATE Tower, Singapore 138602, Singapore
| | - Li Yun Chan
- Radiation Physiology Lab, Singapore Nuclear Research and Safety Initiative, National University of Singapore, CREATE Tower, Singapore 138602, Singapore
| | - Hong Wang
- Radiation Physiology Lab, Singapore Nuclear Research and Safety Initiative, National University of Singapore, CREATE Tower, Singapore 138602, Singapore
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117600, Singapore
| | - Feng Ru Tang
- Radiation Physiology Lab, Singapore Nuclear Research and Safety Initiative, National University of Singapore, CREATE Tower, Singapore 138602, Singapore
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11
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Abstract
The proliferation and migration of Schwann cells contribute to axonal outgrowth and functional recovery after peripheral nerve injury. Previously, several microRNAs were abnormally expressed after peripheral nerve injury and they played important roles in peripheral nerve regeneration. However, the role and underlying mechanism of miR-34a in peripheral nerve injury remain largely unknown. The levels of miR-34a and contactin-2 (CNTN2) were detected by quantitative real-time PCR. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyl-tetrazolium bromide and transwell assays were used to examine cell proliferation and migration, respectively. The protein level of CNTN2 was measured by western blot. The binding sites of miR-34a and CNTN2 were predicted by the online software and confirmed by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Following sciatic nerve injury, the expression of miR-34a was downregulated in the crushed nerve segment, reaching a minimum at the seventh day. Knockdown of miR-34a enhanced the axon outgrowth of dorsal root ganglion neurons. Moreover, miR-34a overexpression evidently inhibited the proliferation of Schwann cells, whereas its knockdown showed the opposite effects. In addition, CNTN2 was a direct target of miR-34a and its expression was negatively regulated by miR-34a in the crushed nerve segment. Besides, CNTN2 overexpression or knockdown could reverse the effects of miR-34a upregulation or downregulation on proliferation and migration of Schwann cells, respectively. Collectively, miR-34a inhibited the proliferation and migration of Schwann cells via targeting CNTN2, which might provide a new approach to peripheral nerve regeneration.
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Zhang H, Lu X, Hao Y, Tang L, He Z. MicroRNA-26a-5p alleviates neuronal apoptosis and brain injury in intracerebral hemorrhage by targeting RAN binding protein 9. Acta Histochem 2020; 122:151571. [PMID: 32622424 DOI: 10.1016/j.acthis.2020.151571] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/15/2020] [Accepted: 05/28/2020] [Indexed: 01/08/2023]
Abstract
Emerging evidence has unraveled the important implications of microRNAs (miRNAs/miRs) in intracerebral hemorrhage (ICH). The aim of the present study was to assess the possible regulatory role of miR-26a-5p in ICH both in vivo and in vitro. ICH model of rats was constructed using stereotactic injection of VII collagenase, and ICH condition of PC-12 cells was stimulated by hemin. Exogenous overexpression of miR-26a-5p was achieved utilizing the transfection with miR-26a-5p agomir or miR-26a-5p mimics. We detected decreased miR-26a-5p and increased RAN binding protein 9 (RANBP9) levels in perihematomal tissues of ICH rats and in PC-12 cells following ICH. While miR-26a-5p overexpression alleviated behavioral deficits and neuronal apoptosis of rats with ICH. Apoptosis-related proteins Bax, Bcl-2 and cleaved caspase-3 in perihematomal region were also measured to further confirm the inhibitory effect of miR-26a-5p on neuronal apoptosis. In ICH models in vitro, we found that miR-26a-5p overexpression significantly decreased hemin-stimulated apoptosis of PC-12 cells. Additionally, RANBP9 knockdown could suppress the apoptosis of PC-12 cells, similar to the effects of PC-12 cells transfected with miR-26a-5p mimics. With dual-luciferase reporter assay, we identified that miR-26a-5p directly targeted RANBP9. In conclusion, exogenous miR-26a-5p alleviated neuronal apoptosis and brain injury partially by targeting RANBP9, and miR-26a-5p/RANBP9 axis may be a potential target for ICH treatment.
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13
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Lafourcade CA, Fernández A, Ramírez JP, Corvalán K, Carrasco MÁ, Iturriaga A, Bátiz LF, Luarte A, Wyneken U. A Role for mir-26a in Stress: A Potential sEV Biomarker and Modulator of Excitatory Neurotransmission. Cells 2020; 9:cells9061364. [PMID: 32492799 PMCID: PMC7349773 DOI: 10.3390/cells9061364] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/21/2020] [Accepted: 05/27/2020] [Indexed: 01/08/2023] Open
Abstract
Stress is a widespread problem in today’s societies, having important consequences on brain function. Among the plethora of mechanisms involved in the stress response at the molecular level, the role of microRNAs (miRNAs) is beginning to be recognized. The control of gene expression by these noncoding RNAs makes them essential regulators of neuronal and synaptic physiology, and alterations in their levels have been associated with pathological conditions and mental disorders. In particular, the excitatory (i.e., glutamate-mediated) neurotransmission is importantly affected by stress. Here, we found that loss of miR-26a-5p (miR-26a henceforth) function in primary hippocampal neurons increased the frequency and amplitude of miniature excitatory currents, as well as the expression levels of the excitatory postsynaptic scaffolding protein PSD95. Incubation of primary hippocampal neurons with corticosterone downregulated miR-26a, an effect that mirrored our in vivo results, as miR-26a was downregulated in the hippocampus as well as in blood serum-derived small extracellular vesicles (sEVs) of rats exposed to two different stress paradigms by movement restriction (i.e., stress by restraint in cages or by complete immobilization in bags). Overall, these results suggest that miR-26a may be involved in the generalized stress response and that a stress-induced downregulation of miR-26a could have long-term effects on glutamate neurotransmission.
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Affiliation(s)
- Carlos Andrés Lafourcade
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
- Correspondence: (C.A.L.); (U.W.)
| | - Anllely Fernández
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
| | - Juan Pablo Ramírez
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
| | - Katherine Corvalán
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
| | - Miguel Ángel Carrasco
- Facultad de Ingeniería y Ciencias Aplicadas, Universidad de los Andes, Santiago PC 7620001, Chile;
| | - Andrés Iturriaga
- Instituto de Salud Poblacional, Facultad de Medicina, Universidad de Chile, Santiago PC 8380453, Chile;
| | - Luis Federico Bátiz
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
| | - Alejandro Luarte
- Biomedical Neuroscience Institute, Universidad de Chile, Santiago PC 8380453, Chile;
| | - Ursula Wyneken
- Centro de Investigación e Innovación Biomédica (CIIB), Facultad de Medicina, Universidad de los Andes, Santiago PC 7620001, Chile; (A.F.); (J.P.R.); (K.C.); (L.F.B.)
- Correspondence: (C.A.L.); (U.W.)
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Lucci C, Mesquita-Ribeiro R, Rathbone A, Dajas-Bailador F. Spatiotemporal regulation of GSK3β levels by miRNA-26a controls axon development in cortical neurons. Development 2020; 147:dev.180232. [PMID: 31964775 PMCID: PMC7033742 DOI: 10.1242/dev.180232] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 12/19/2019] [Indexed: 12/17/2022]
Abstract
Both the establishment of neuronal polarity and axonal growth are crucial steps in the development of the nervous system. The local translation of mRNAs in the axon provides precise regulation of protein expression, and is now known to participate in axon development, pathfinding and synaptic formation and function. We have investigated the role of miR-26a in early stage mouse primary cortical neuron development. We show that micro-RNA-26a-5p (miR-26a) is highly expressed in neuronal cultures, and regulates both neuronal polarity and axon growth. Using compartmentalised microfluidic neuronal cultures, we identified a local role for miR-26a in the axon, where the repression of local synthesis of GSK3β controls axon development and growth. Removal of this repression in the axon triggers local translation of GSK3β protein and subsequent transport to the soma, where it can impact axonal growth. These results demonstrate how the axonal miR-26a can regulate local protein translation in the axon to facilitate retrograde communication to the soma and amplify neuronal responses, in a mechanism that influences axon development. Highlighted Article: Axonal miR-26a can regulate GSK3β translation in the axon to promote retrograde communication to the soma in a mechanism that modulates axon development.
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Affiliation(s)
- Cristiano Lucci
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH Nottingham, UK
| | - Raquel Mesquita-Ribeiro
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH Nottingham, UK
| | - Alex Rathbone
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH Nottingham, UK
| | - Federico Dajas-Bailador
- School of Life Sciences, Medical School Building, University of Nottingham, NG7 2UH Nottingham, UK
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15
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Liu Y, Wang L, Xie F, Wang X, Hou Y, Wang X, Liu J. Overexpression of miR-26a-5p Suppresses Tau Phosphorylation and Aβ Accumulation in the Alzheimer's Disease Mice by Targeting DYRK1A. Curr Neurovasc Res 2020; 17:241-248. [PMID: 32286945 DOI: 10.2174/1567202617666200414142637] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE It is reported that miR-26a-5p could regulate neuronal development, but its underlying mechanisms in Alzheimer's disease (AD) progression is unclear. METHODS APP (swe)/PS1 (ΔE9) transgenic mice served as AD mice. Morris water maze test was used to measure the spatial learning and memory ability of mice. The expressions of miR-26a-5p, DYRK1A, phosphorylated-Tau, Aβ40, and Aβ42 were detected. The relationship between miR- 26a-5p and DYRK1A was explored using dual luciferase reporter assay. The effects of miR-26a- 5p on AD mice was determined. RESULTS AD mice walked a lot of wrong ways to find the platform area and the latency time to reach the platform was longer. There was low expression of MiR-26a-5p in AD mice. Overexpression of miR-26a-5p inhibited Tau phosphorylation and Aβ accumulation. MiR-26a-5p negatively regulated DYRK1A via targeting its 3'UTR. In vivo, increased miR-26a-5p down-regulated Aβ40, Aβ42, p-APP and p-Tau levels in AD mice through decreasing DYRK1A. Meanwhile, the swimming path and the latency time, to reach the platform, was shorten after enhancing miR-26a-5p expression. CONCLUSION Overexpression of miR-26a-5p could repress Tau phosphorylation and Aβ accumulation via down-regulating DYRK1A level in AD mice.
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Affiliation(s)
- Yanni Liu
- Department of Neurology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, 712000, China
| | - Lin Wang
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an City, Shaanxi Province, 710077, China
| | - Fuheng Xie
- Department of Neurology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, 712000, China
| | - Xiao Wang
- Department of Neurology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, 712000, China
| | - Yuanyuan Hou
- Department of Neurology, Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, Shaanxi Province, 712000, China
| | - Xiaomeng Wang
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an City, Shaanxi Province, 710077, China
| | - Juan Liu
- Department of Neurology, The First Affiliated Hospital of Xi'an Medical University, Xi'an City, Shaanxi Province, 710077, China
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16
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Bahmad HF, Darwish B, Dargham KB, Machmouchi R, Dargham BB, Osman M, Khechen ZA, El Housheimi N, Abou-Kheir W, Chamaa F. Role of MicroRNAs in Anesthesia-Induced Neurotoxicity in Animal Models and Neuronal Cultures: a Systematic Review. Neurotox Res 2019; 37:479-490. [PMID: 31707631 DOI: 10.1007/s12640-019-00135-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/15/2019] [Accepted: 10/28/2019] [Indexed: 12/27/2022]
Abstract
Exposure to anesthetic agents in early childhood or late intrauterine life might be associated with neurotoxicity and long-term neurocognitive decline in adulthood. This could be attributed to induction of neuroapoptosis and inhibition of neurogenesis by several mechanisms, with a pivotal role of microRNAs in this milieu. MicroRNAs are critical regulators of gene expression that are differentially expressed in response to internal and external environmental stimuli, including general anesthetics. Through this systematic review, we aimed at summarizing the current knowledge apropos of the roles and implications of deregulated microRNAs pertaining to anesthesia-induced neurotoxicity in animal models and derived neuronal cultures. OVID/Medline and PubMed databases were lastly searched on April 1st, 2019, using the Medical Subject Heading (MeSH) or Title/Abstract words ("microRNA" and "anesthesia"), to identify all published research studies on microRNAs and anesthesia. During the review process, data abstraction and methodological assessment was done by independent groups of reviewers. In total, 29 studies were recognized to be eligible and were thus involved in this systematic review. Anesthetic agents studied included sevoflurane, isoflurane, propofol, bupivacaine, and ketamine. More than 40 microRNAs were identified to have regulatory roles in anesthesia-induced neurotoxicity. This field of study still comprises several gaps that should be filled by conducting basic, clinical, and translational research in the future to decipher the exact role of microRNAs and their functions in the context of anesthesia-induced neurotoxicity.
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Affiliation(s)
- Hisham F Bahmad
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Batoul Darwish
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Karem Bou Dargham
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anesthesiology, Hammoud Hospital University Medical Center, Sidon, Lebanon
| | - Rabih Machmouchi
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anesthesiology, Hammoud Hospital University Medical Center, Sidon, Lebanon
| | - Bahaa Bou Dargham
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anesthesiology, Hammoud Hospital University Medical Center, Sidon, Lebanon
| | - Maarouf Osman
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anesthesiology, Hammoud Hospital University Medical Center, Sidon, Lebanon
| | - Zonaida Al Khechen
- Faculty of Medicine, Beirut Arab University, Beirut, Lebanon.,Department of Anesthesiology, Hammoud Hospital University Medical Center, Sidon, Lebanon
| | - Nour El Housheimi
- Department of Anesthesiology, American University of Beirut Medical Center, Beirut, Lebanon
| | - Wassim Abou-Kheir
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
| | - Farah Chamaa
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
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17
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Liu X, Yu X, He Y, Wang L. Long noncoding RNA nuclear enriched abundant transcript 1 promotes the proliferation and migration of Schwann cells by regulating the miR-34a/Satb1 axis. J Cell Physiol 2019; 234:16357-16366. [PMID: 30747445 DOI: 10.1002/jcp.28302] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
The proliferation and migration of Schwann cells contribute to axonal outgrowth and functional recovery after peripheral nerve injury. Studies have found that long noncoding RNAs (lncRNAs) were abnormally expressed after peripheral nerve injury and they played vital roles in peripheral nerve regeneration. LncRNA nuclear enriched abundant transcript 1 (NEAT1) was increased in the cerebral cortex surrounding the injury site of mice after traumatic brain injury, and it promoted the functional recovery in mice. However, its role and mechanism in peripheral nerve injury remain unknown. The expression of NEAT1, miR-34a, and Special AT-rich sequence-binding protein-1 (Satb1) was detected in the sciatic nerve of mice after sciatic nerve crush at 0, 1, 4 and 7 days. The effects of NEAT1 on the proliferation and migration of Schwann cells were detected by 5-Ethynyl-20-deoxyuridine (Edu) and transwell by gain- and loss-of-functions. The mechanism was focused on the miR-34a/Satb1 pathway. In addition, the effect of NEAT1 in Schwann cells on axon outgrowth of dorsal root ganglion neurons was further investigated. We found that the NEAT1 and Satb1 expression was increased, whereas miR-34a was reduced, in injured sciatic nerve at different time points. Overexpression of NEAT1 promoted, whereas knockdown of NEAT1 suppressed the proliferation and migration of Schwann cells. NEAT1 functioned as a competing endogenous RNA to regulate the Satb1 expression via sponging miR-34a. NEAT1 enhanced the axon outgrowth of dorsal root ganglion neurons via regulating the miR-34a and Satb1 expression. In conclusion, NEAT1 promotes the proliferation and migration of Schwann cell via miR-34a/Satb1, which may provide a new approach to peripheral nerve regeneration.
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Affiliation(s)
- Xiangyu Liu
- Department of Aesthetic Plastic & Craniofacial Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xueyuan Yu
- Department of Aesthetic Plastic & Craniofacial Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Youcheng He
- Department of Aesthetic Plastic & Craniofacial Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Lu Wang
- Department of Aesthetic Plastic & Craniofacial Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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18
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Notoginsenoside R1 protects human renal proximal tubular epithelial cells from lipopolysaccharide-stimulated inflammatory damage by up-regulation of miR-26a. Chem Biol Interact 2019; 308:364-371. [PMID: 31158334 DOI: 10.1016/j.cbi.2019.05.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Notoginsenoside R1 (NGR1) is the main saponin isolated from the roots of Panax notoginseng (Burk.) F.H. Chen (Araliaceae). This study explored the protective effects of NGR1 on human renal proximal tubular epithelial cell inflammatory damage caused by lipopolysaccharide (LPS), as well as possible internal molecular mechanisms. METHODS Cell viability and apoptosis were assessed using CCK-8 assay and Annexin V-FITC/PI Apoptosis Detection kit, respectively. Reactive oxygen species (ROS) level was tested using DCFH-DA staining. qRT-PCR was used to measure microRNA-26a (miR-26a), interleukin 1β (IL-1β), IL-6 and tumor necrosis factor α (TNF-α) expressions. miRNA transfection was conducted to knock down miR-26a. The protein expression levels of key molecules related to cell apoptosis, inflammatory response and nuclear factor kappa B (NF-κB) pathway were detected using western blotting. RESULTS LPS stimulation caused human renal proximal tubular epithelial cell viability reduction, apoptosis and inflammatory cytokines expression. NGR1 treatment protected human renal proximal tubular epithelial cells from LPS-caused viability reduction, ROS level elevation, apoptosis and inflammatory cytokines expression. Mechanistically, NGR1 enhanced miR-26a expression in LPS-treated human renal proximal tubular epithelial cells. Knockdown of miR-26a reversed the protective effect of NGR1 on LPS-treated cells. Besides, NGR1 inactivated NF-κB pathway in LPS-treated human renal proximal tubular epithelial cells via up-regulating miR-26a. CONCLUSION NGR1 protected human renal proximal tubular epithelial cells from LPS-caused inflammatory damage at least partially via up-regulating miR-26a and then inactivating NF-κB pathway.
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19
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Effect of miR-132 on bupivacaine-induced neurotoxicity in human neuroblastoma cell line. J Pharmacol Sci 2019; 139:186-192. [DOI: 10.1016/j.jphs.2019.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/04/2019] [Accepted: 01/17/2019] [Indexed: 12/18/2022] Open
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20
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Shi Q, Chen X, Sun G, Wang L, Cui L. Ginsenoside Rg1 protects human retinal pigment epithelial ARPE-19 cells from toxicity of high glucose by up-regulation of miR-26a. Life Sci 2019; 221:152-158. [PMID: 30763577 DOI: 10.1016/j.lfs.2019.02.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 02/01/2019] [Accepted: 02/09/2019] [Indexed: 02/01/2023]
Abstract
AIMS The therapeutic strategies for diabetic retinopathy (DR) are disappointing. Ginsenoside Rg1 (Rg1) extracted from Panax ginseng can induce glucose uptake and lower oxidative stress. We aimed to explore the effect of Rg1 on DR using human retinal pigment epithelium cells (ARPE-19). MAIN METHODS ARPE-19 cells were grown in high glucose (HG) to simulate DR. Cell viability, apoptosis, ROS generation and miR-26a level were examined by CCK-8 assay, flow cytometry assay, DCFH-DA staining and RT-qPCR, respectively. Expression of proteins associated with viability, apoptosis and oxidative stress was measured by Western blot analysis. Effects of Rg1 on HG-induced alteration were assessed. Moreover, whether miR-26a was involved in Rg1-associated modulation was verified. Finally, the involvements of the ERK and Wnt/β-catenin pathways were analyzed by Western blot analysis. KEY FINDINGS HG reduced cell viability while promoted apoptosis and oxidative stress in ARPE-19 cells. Rg1 ameliorated HG-induced cell injury. The expression of miR-26a was up-regulated by Rg1 in HG-treated cells, and miR-26a inhibition obviously reversed the effects of Rg1 on HG-treated cells. Finally, we found the ERK and Wnt/β-catenin pathways were inhibited by Rg1 through up-regulation of miR-26a. SIGNIFICANCE Rg1 protected ARPE-19 cells against HG-induced injury through up-regulating miR-26a, along with inhibition of the ERK and Wnt/β-catenin pathways. Rg1 might be a potential therapeutic drug for DR.
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Affiliation(s)
- Qianqian Shi
- Department of Ophthalmology, Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, Zhengzhou 450003, China
| | - Xiuying Chen
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Co-innovation Center of Henan Province for New Drug R&D and Preclinical Safety, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Guangli Sun
- Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Lili Wang
- Department of Ophthalmology, People's Hospital of Zhengzhou, Zhengzhou 450000, China
| | - Longjiang Cui
- Department of Ophthalmology, Henan Eye Institute, Henan Eye Hospital, Henan Provincial People's Hospital, Zhengzhou 450003, China.
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Downregulation of MicroRNA-33-5p Protected Bupivacaine-Induced Apoptosis in Murine Dorsal Root Ganglion Neurons Through GDNF. Neurotox Res 2019; 35:860-866. [PMID: 30617464 DOI: 10.1007/s12640-018-9994-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/21/2018] [Accepted: 12/26/2018] [Indexed: 12/25/2022]
Abstract
In this work, we evaluated the functional role of microRNA-33-5p (miR-33-5p) in regulating bupivacaine (Bv)-induced neural apoptosis in dorsal root ganglion (DRG) cells. DRG was extracted from adult mice and treated with BV in vitro. A TUNEL assay was applied to assess neural apoptosis among DRG cells. A qRT-PCR assay was applied to assess miR-33-5p expression among BV-treated DRG cells. MiR-33-5p was genetically knocked down in DRG cells. Its effect on BV-induced neural apoptosis was further evaluated by TUNEL assay. Correlation between miR-33-5p and its putative downstream target gene, glial cell-derived neurotrophic factor (GDNF), was assessed by dual-luciferase activity and qRT-PCR assays, respectively. GDNF was then inhibited in miR-33-5p-downregulated DRG cells to further assess its functional regulation in BV-induced neural apoptosis. BV induced significant neural apoptosis, in a dose-dependent manner, in DRG cells in vitro. MiR-33-5p was upregulated by BV treatment, also in a dose-dependent manner in DRG cells. On the other hand, downregulation of miR-33-5p protected BV-induced DRG neural apoptosis. GDNF was shown to be inversely correlated with miR-33-5p in BV-treated DRG cells. Moreover, inhibiting GDNF was able to reverse the protection of miR-33-5p-downregulation on BV-induced DRG neural apoptosis. MiR-33-5p, through its inverse regulation on DGNF gene, modulates anesthesia-induced neural apoptosis in DRG cells.
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Yin H, Shen L, Xu C, Liu J. Lentivirus-Mediated Overexpression of miR-29a Promotes Axonal Regeneration and Functional Recovery in Experimental Spinal Cord Injury via PI3K/Akt/mTOR Pathway. Neurochem Res 2018; 43:2038-2046. [PMID: 30173324 DOI: 10.1007/s11064-018-2625-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 07/24/2018] [Accepted: 08/28/2018] [Indexed: 12/11/2022]
Abstract
MicroRNAs as a novel class of endogenous small non-coding RNAs, modulate negative gene expression at the post-transcriptional level. Our previous work has demonstrated that miR-29a reduces PTEN expression by directly targeting the 3'-UTRs (untranslated regions) of its mRNA, thus promoting neurite outgrowth. To further confirm the role of miR-29a in the recovery of SCI and its potential mechanisms, a recombinant lentiviral vector was used to promote miR-29a expression in the injured spinal cord. As compared with the LV-eGFP group and normal saline group, a significantly increased level of miR-29a expression and a markedly decreased level of PTEN expression were observed in the LV-miR-29a group. Overexpression of miR-29a increased the phosphorylation of two proteins (Akt and S6) of PI3K-AKT-mTOR signaling pathway and the expression of axonal regeneration associated key marker protein (neurofiament-200). Moreover, quantitative imaging analysis was performed to confirm that LV-miR-29a group expressed axonal regeneration at 4.0 ± 0.2-fold as much as the other two groups. Besides, miR-29a overexpression promoted hindlimb motor functional recovery. Collectively, these results suggested that miR-29a may be an important regulator for axon regeneration, and a potential therapeutic target for SCI recovery.
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Affiliation(s)
- Hua Yin
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China.,Department of Orthopedics, The Jintan Affiliated Hospital of Jiangsu University, Jintan, 213200, Jiangsu, China
| | - Liming Shen
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China
| | - Chao Xu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China
| | - Jinbo Liu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, Jiangsu, China.
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Zhang K, Yang S, Luo C. TNF-alpha and TNF-R1 regulate bupivacaine-induced apoptosis in spinal cord dorsal root ganglion neuron. Eur J Pharmacol 2018; 833:63-68. [PMID: 29802833 DOI: 10.1016/j.ejphar.2018.05.034] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/19/2018] [Accepted: 05/22/2018] [Indexed: 02/05/2023]
Abstract
Local anesthesia has been shown to render severe spinal cord neurotoxicity. This study used an in vitro model to explore the expression and function of tumor necrosis factor (TNF) signaling pathway in bupivacaine-induced apoptotic injury in spinal cord dorsal root ganglia (DRG). DRG was prepared from adult C57BL/6 mice and incubated with 10 mM bupivacaine in vitro to induce apoptosis. QRT-PCR and western blot demonstrated that bupivacaine upregulated TNF-alpha (TNF-α) and TNF receptor 1 (TNF-R1), but left TNF receptor 2 (TNF-R2) unaffected in DRG. SiRNA-mediated TNF-α or TNF-R1 inhibition, but not TNF-R2 inhibition, rescued bupivacaine-induced DRG apoptosis. In addition, qRT-PCR and western blot demonstrated that downstream substrates of apoptotic and TNF signaling pathways, caspase-9, MAP3K and JNK, were all significantly downregulated by TNF-α or TNF-R1 inhibition, but not by TNF-R2 inhibition, in bupivacaine-injured DRG. Thus, our work suggested that TNF-α and TNF-R1 are the major contributors of TNF signaling pathway in anesthesia-induced spinal cord neurotoxicity. Targeting TNF-α / TNF-R1, not TNF-R2 signaling pathway may be the key component to rescue or prevent anesthesia-induced apoptotic injury in spinal cord neurons.
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Affiliation(s)
- Ke Zhang
- Department of Anesthesiology, The 2nd Affiliated Hospital of Chengdu Medical College, Nuclear Industry 416 Hospital, Chengdu 610051, China
| | - Shuai Yang
- Department of Anesthesiology, Affiliated Hospital and Clinical Medical College of Chengdu University, Chengdu 610081, China.
| | - Chaozhi Luo
- Department of Anesthesiology, West China School of Medicine, West China Hospital, Sichuan University, Chengdu 637400, China
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Inhibiting EZH2 rescued bupivacaine-induced neuronal apoptosis in spinal cord dorsal root ganglia in mice. J Anesth 2018; 32:524-530. [DOI: 10.1007/s00540-018-2506-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/30/2018] [Indexed: 10/16/2022]
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Guo Z, Liu Y, Cheng M. Resveratrol protects bupivacaine-induced neuro-apoptosis in dorsal root ganglion neurons via activation on tropomyosin receptor kinase A. Biomed Pharmacother 2018; 103:1545-1551. [PMID: 29864941 DOI: 10.1016/j.biopha.2018.04.155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 04/13/2018] [Accepted: 04/23/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND General anesthesia in spinal cord may lead to unexpected but irreversible neurotoxicity. We investigated whether resveratrol (RSV) may protect bupivacaine (BUP)-induced neuro-apoptosis in spinal cord dorsal root ganglia (DRG). METHODS Mouse DRG cells were cultured in vitro, pre-treated with RSV and then 5 mM BUP. A concentration-dependent effect of RSV on reducing BUP-induced apoptosis of DRG neurons (DRGNs) was evaluated using a TUNEL assay. QRT-PCR and western blot assays were also conducted to evaluate gene and protein expressions of tropomyosin receptor kinase A/B/C (TrkA/B/C) and activated (phosphorylated) Trk receptors, phospho-TrkA/B/C. In addition, a functional TrkA blocking antibody MNAC13 was applied in DRG culture to further measure the functional role of Trk receptor in RSV-initiated apoptotic protection on BUP-damaged DRGNs. RESULTS BUP promoted significant apoptosis in DRG. RSV exhibited protective effects against BUP-induced neuro-apoptosis in a concentration-dependent manner. qRT-PCR and western blot showed that RSV did not alter TrkA/B/C gene or protein expression, but significantly upregulated phospho-TrkA. Conversely, application of MNAC13 decreased phospho-TrkA and reversed RSV-initiated neuro-protection on BUP-induced DRGN apoptosis. CONCLUSION Resveratrol may protect anesthesia-induced DRG neuro-apoptosis, and activation of TrkA signaling pathway may be the underlying mechanism in this process.
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Affiliation(s)
- Zhiliang Guo
- Department of Orthopedic, No. 89 Hospital of Chinese PLA, Weifang, 261021, China
| | - Yuanyuan Liu
- Medicine Research Center, Weifang Medical University, Weifang, Shandong, 261053, China
| | - Min Cheng
- Medicine Research Center, Weifang Medical University, Weifang, Shandong, 261053, China.
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26
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Blandford SN, Galloway DA, Moore CS. The roles of extracellular vesicle microRNAs in the central nervous system. Glia 2018; 66:2267-2278. [PMID: 29726599 DOI: 10.1002/glia.23445] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 01/08/2023]
Abstract
MicroRNAs (miRNAs) are small, highly conserved non-coding RNA molecules that post-transcriptionally regulate protein expression and most biological processes. Mature miRNAs are recruited to the RNA-induced silencing complex (RISC) and target mRNAs via complementary base-pairing, thus resulting in translational inhibition and/or transcript degradation. Here, we present evidence implicating miRNAs within extracellular vesicles (EVs), including microvesicles and exosomes, as mediators of central nervous system (CNS) development, homeostasis, and injury. EVs are extracellular vesicles that are secreted by all cells and represent a novel method of intercellular communication. In glial cells, the transfer of miRNAs via EVs can alter the function of recipient cells and significantly impacts cellular mechanisms involved in both injury and repair. This review discusses the value of information to be gained by studying miRNAs within EVs in the context of CNS diseases and their potential use in the development of novel disease biomarkers and therapeutic strategies.
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Affiliation(s)
| | - Dylan A Galloway
- Memorial University of Newfoundland, St John's, Newfoundland, Canada
| | - Craig S Moore
- Memorial University of Newfoundland, St John's, Newfoundland, Canada
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Yu L, Jiang Y, Tang B. Lin28a functionally modulates bupivacaine-induced dorsal root ganglion neuron apoptosis through TrkA activation. Biomed Pharmacother 2018; 98:63-68. [DOI: 10.1016/j.biopha.2017.11.142] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 11/26/2017] [Accepted: 11/27/2017] [Indexed: 10/18/2022] Open
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28
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Guo J, Wang H, Tao Q, Sun S, Liu L, Zhang J, Yang D. Antidepressant Imipramine Protects Bupivacaine-Induced Neurotoxicity in Dorsal Root Ganglion Neurons Through Coactivation of TrkA and TrkB. J Cell Biochem 2018; 118:3960-3967. [PMID: 28398601 DOI: 10.1002/jcb.26051] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 04/10/2017] [Indexed: 01/16/2023]
Abstract
In our work, we used an in vitro culture model to investigate whether antidepressant imipramine (Ip) may protect bupivacaine (Bv)-induced neurotoxicity in mouse dorsal root ganglion (DRG). Adult mouse DRG was treated with 5 mM Bv in vitro to induce neurotoxicity. DRG was then pre-treated with Ip, prior to Bv, to examine its effects on protecting Bv-induced DRG apoptosis and neurite degeneration. Ip-induced dynamic changes in Trk receptors, including TrkA/B/C and phosphor (p-)TrkA/B/C, were examined by qPCR and Western blot. TrkA and TrkB were inhibited by siRNAs to further investigate their functional role in Ip- and Bv-treated DRG. Ip protected Bv-induced apoptosis and neurite loss in DRG. Ip did not alter TrkA/B/C expressions, whereas significantly augmented protein productions of p-TrkA and p-TrkB, but not p-TrkC. SiRNA-mediated TrkA or TrkB downregulation inhibited Trk receptors, and reduced p-TrkA and p-TrkB in DRG. TrkA or TrkB downregulation alone had no effect on Ip-induced protection in Bv-injured DRG. However, co-inhibition of TrkA and TrkB significantly ameliorated the protective effect of Ip on Bv-induced apoptosis and neurite loss in DRG. Imipramine protected bupivacaine-induced neurotoxicity in DRG, likely via the co-activation of TrkA and TrkB signaling pathways. J. Cell. Biochem. 118: 3960-3967, 2017. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Jianrong Guo
- Department of Anesthesiology, Gongli Hospital, Second Military Medical University, Shanghai, 200135, China
| | | | | | | | | | | | - Dawei Yang
- Department of Anesthesiology, Gongli Hospital, Second Military Medical University, Shanghai, 200135, China
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Chen L, Wang X, Huang W, Ying T, Chen M, Cao J, Wang M. MicroRNA-137 and its downstream target LSD1 inversely regulate anesthetics-induced neurotoxicity in dorsal root ganglion neurons. Brain Res Bull 2017; 135:1-7. [PMID: 28899795 DOI: 10.1016/j.brainresbull.2017.09.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/25/2017] [Accepted: 09/01/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE Anesthetic reagents, such as bupivacaine (Bv), induce significant neurotoxicity in dorsal root ganglion neurons (DRGNs). In this study, we investigated the expression, function and cross-association of microRNA-137-3p (miR-137-3p) and lysine (K)-specific demethylase 1A (LSD1) in a murine model of Bv-induced neural injury in DRGNs. METHODS Murine DRGNs were culture in vitro and treated with Bv. QPCR was used to evaluate miR-137-3p expression in Bv-injured DRGNs. MiR-137-3p was genetically downregulated to evaluate its rescuing effect on Bv-induced DRGN apoptosis and neurite retraction. The association of miR-137-3p on its downstream target, LSD1 coding gene KDM1A, was evaluated by dual-luciferase activity assay and qPCR. In miR-137-3p-downregulated DRGNs, KDM1A was inhibited to evaluate its involvement in miR-137-3p-mediated modulation on Bv-induced DRGN neurotoxicity. Furthermore, KDM1A expression in Bv-injured DRGN was evaluated by qPCR, and LSD1 was overexpressed in DRGN to evaluate its direct effect on Bv-induced neurotoxicity. RESULTS MiR-137-3p was upregulated in Bv-injured DRGNs. MiR-137-3p downregulation rescued Bv-induced DRGN apoptosis and neurite retraction. LSD1 was demonstrated to be downstream to, and inversely modulated by miR-137-3p in DRGN. In Bv-injured DRGNs, LSD1 downregulation reversed miR-137-3p-downregualtion-induced neural protection. Furthermore, LSD1 upregulation directly rescued Bv-induced apoptosis and neurite retraction in DRGNs. CONCLUSIONS MiR-137-3p and its downstream target LSD1 are inversely associated to regulate anesthetics-induced neurotoxicity in DRGN. This signaling pathway may be a therapeutic candidate to reduce anesthetics-induced neurological damage in human patients.
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Affiliation(s)
- Lingyang Chen
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Xiaodan Wang
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Wenguang Huang
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Tingting Ying
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Minjuan Chen
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Jianbin Cao
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China
| | - Mingcang Wang
- Department of Anesthesia, Zhejiang Taizhou Hospital Affiliated to Wenzhou Medical University, Taizhou 317000, China.
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Ghibaudi M, Boido M, Vercelli A. Functional integration of complex miRNA networks in central and peripheral lesion and axonal regeneration. Prog Neurobiol 2017; 158:69-93. [PMID: 28779869 DOI: 10.1016/j.pneurobio.2017.07.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 07/24/2017] [Accepted: 07/28/2017] [Indexed: 01/06/2023]
Abstract
New players are emerging in the game of peripheral and central nervous system injury since their physiopathological mechanisms remain partially elusive. These mechanisms are characterized by several molecules whose activation and/or modification following a trauma is often controlled at transcriptional level. In this scenario, microRNAs (miRNAs/miRs) have been identified as main actors in coordinating important molecular pathways in nerve or spinal cord injury (SCI). miRNAs are small non-coding RNAs whose functionality at network level is now emerging as a new level of complexity. Indeed they can act as an organized network to provide a precise control of several biological processes. Here we describe the functional synergy of some miRNAs in case of SCI and peripheral damage. In particular we show how several small RNAs can cooperate in influencing simultaneously the molecular pathways orchestrating axon regeneration, inflammation, apoptosis and remyelination. We report about the networks for which miRNA-target bindings have been experimentally demonstrated or inferred based on target prediction data: in both cases, the connection between one miRNA and its downstream pathway is derived from a validated observation or is predicted from the literature. Hence, we discuss the importance of miRNAs in some pathological processes focusing on their functional structure as participating in a cooperative and/or convergence network.
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Affiliation(s)
- M Ghibaudi
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy.
| | - M Boido
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy
| | - A Vercelli
- Department of Neuroscience "Rita Levi Montalcini", Neuroscience Institute Cavalieri Ottolenghi, University of Torino, Italian Institute of Neuroscience, Italy
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He J, Tian Y, Zhao Y, Liu Y, Tao Z, Li G, Niu D, Lu L, Lu Y. MiR-144 affects fatty acid composition by regulating ELOVL6 expression in duck hepatocytes. Cell Biol Int 2017; 41:691-696. [DOI: 10.1002/cbin.10753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2017] [Accepted: 02/19/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Jun He
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
- Department of Animal Science; Wenzhou Vocational College of Science & Technology; Wenzhou 325006 China
| | - Yong Tian
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
| | - Yan Zhao
- Department of Animal Science; Wenzhou Vocational College of Science & Technology; Wenzhou 325006 China
| | - Yali Liu
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
| | - Zhengrong Tao
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
| | - Guoqin Li
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
| | - Dong Niu
- College of Animal Science; Zhejiang University; Hangzhou 310021 China
| | - Lizhi Lu
- Institute of Animal Husbandry and Veterinary Science; Zhejiang Academy Agricultural Sciences; Hangzhou 310021 China
| | - Yingru Lu
- Department of Emergency Medicine; First Affiliated Hospital of Wenzhou Medical University; Wenzhou 325000 China
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32
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MiR-26a inhibits proliferation and migration of HaCaT keratinocytes through regulating PTEN expression. Gene 2016; 594:117-124. [DOI: 10.1016/j.gene.2016.09.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Revised: 08/30/2016] [Accepted: 09/05/2016] [Indexed: 01/27/2023]
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Small-molecule GSK-3 inhibitor rescued apoptosis and neurodegeneration in anesthetics-injured dorsal root ganglion neurons. Biomed Pharmacother 2016; 84:395-402. [DOI: 10.1016/j.biopha.2016.08.059] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 08/24/2016] [Indexed: 01/01/2023] Open
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Lafourcade C, Ramírez JP, Luarte A, Fernández A, Wyneken U. MiRNAs in Astrocyte-Derived Exosomes as Possible Mediators of Neuronal Plasticity. J Exp Neurosci 2016; 10:1-9. [PMID: 27547038 PMCID: PMC4978198 DOI: 10.4137/jen.s39916] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 07/07/2016] [Accepted: 07/09/2016] [Indexed: 12/21/2022] Open
Abstract
Astrocytes use gliotransmitters to modulate neuronal function and plasticity. However, the role of small extracellular vesicles, called exosomes, in astrocyte-to-neuron signaling is mostly unknown. Exosomes originate in multivesicular bodies of parent cells and are secreted by fusion of the multivesicular body limiting membrane with the plasma membrane. Their molecular cargo, consisting of RNA species, proteins, and lipids, is in part cell type and cell state specific. Among the RNA species transported by exosomes, microRNAs (miRNAs) are able to modify gene expression in recipient cells. Several miRNAs present in astrocytes are regulated under pathological conditions, and this may have far-reaching consequences if they are loaded in exosomes. We propose that astrocyte-derived miRNA-loaded exosomes, such as miR-26a, are dysregulated in several central nervous system diseases; thus potentially controlling neuronal morphology and synaptic transmission through validated and predicted targets. Unraveling the contribution of this new signaling mechanism to the maintenance and plasticity of neuronal networks will impact our understanding on the physiology and pathophysiology of the central nervous system.
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Affiliation(s)
- Carlos Lafourcade
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad de los Andes, Chile
| | - Juan Pablo Ramírez
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad de los Andes, Chile
| | - Alejandro Luarte
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad de los Andes, Chile
| | - Anllely Fernández
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad de los Andes, Chile
| | - Ursula Wyneken
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad de los Andes, Chile
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Zheng X, Lin C, Li Y, Ye J, Zhou J, Guo P. Long noncoding RNA BDNF-AS regulates ketamine-induced neurotoxicity in neural stem cell derived neurons. Biomed Pharmacother 2016; 82:722-8. [DOI: 10.1016/j.biopha.2016.05.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 05/27/2016] [Accepted: 05/31/2016] [Indexed: 12/31/2022] Open
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Zhang X, Chen K, Song C, Song C. Inhibition of long non-coding RNA IGF2AS has profound effect on inducing neuronal growth and protecting local-anesthetic induced neurotoxicity in dorsal root ganglion neurons. Biomed Pharmacother 2016; 82:298-303. [DOI: 10.1016/j.biopha.2016.04.042] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 04/20/2016] [Accepted: 04/22/2016] [Indexed: 12/19/2022] Open
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Shi H, Luo X. 7, 8, 3'-Trihydroxyflavone Promotes Neurite Outgrowth and Protects Against Bupivacaine-Induced Neurotoxicity in Mouse Dorsal Root Ganglion Neurons. Med Sci Monit 2016; 22:2301-8. [PMID: 27371503 PMCID: PMC4941892 DOI: 10.12659/msm.896961] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background 7, 8, 3′-trihydroxyflavone (THF) is a novel pro-neuronal small molecule that acts as a TrkB agonist. In this study, we examined the effect of THF on promoting neuronal growth and protecting anesthetics-induced neurotoxicity in dorsal root ganglion (DRG) neurons in vitro. Material/Methods Neonatal mouse DRG neurons were cultured in vitro and treated with various concentrations of THF. The effect of THF on neuronal growth was investigated by neurite outgrowth assay and Western blot. In addition, the protective effects of THF on bupivacaine-induced neurotoxicity were investigated by apoptosis TUNEL assay, neurite outgrowth assay, and Western blot, respectively. Results THF promoted neurite outgrowth of DRG neurons in dose-dependent manner, with an EC50 concentration of 67.4 nM. Western blot analysis showed THF activated TrkB signaling pathway by inducing TrkB phosphorylation. THF also rescued bupivacaine-induced neurotoxicity by reducing apoptosis and protecting neurite retraction in DRG neurons. Furthermore, the protection of THF in bupivacaine-injured neurotoxicity was directly associated with TrkB phosphorylation in a concentration-dependent manner in DRG neurons. Conclusions THF has pro-neuronal effect on DRG neurons by promoting neurite growth and protecting against bupivacaine-induced neurotoxicity, likely through TrkB activation.
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Affiliation(s)
- Haohong Shi
- Department of Anesthesia, Children's Hospital, Fudan University, Shanghai, China (mainland)
| | - Xingjing Luo
- Department of Anesthesia, Children's Hospital, Fudan University, Shanghai, China (mainland)
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38
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Zhang Y, Yan L, Cao Y, Kong G, Lin C. Long noncoding RNA BDNF-AS protects local anesthetic induced neurotoxicity in dorsal root ganglion neurons. Biomed Pharmacother 2016; 80:207-212. [PMID: 27133058 DOI: 10.1016/j.biopha.2016.03.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 03/02/2016] [Accepted: 03/02/2016] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Long noncoding RNA (lncRNA) BDNF-AS was recently identified to regulate neurotrophin signaling pathway. In this study, we examined the functional role of BDNF-AS in regulating local anesthetic-induced neurotoxicity in dorsal root ganglion (DRG) neurons. METHODS Neonatal mouse DRG neurons were cultured in vitro, and treated with local anesthetic, bupivacaine, to induce neurotoxicity. The corresponding change in BDNF-AS expression level in DRG was probed by qRT-PCR. BDNF-AS was knocked down by siRNA in DRG. The effects of BDNF-AS downregulation on neurite regrowth, neuronal apoptosis and activating TrkB signaling pathway in bupivacaine-injured DRG neurons were probed by neurite outgrowth assay, TUNEL assay and western blot assay, respectively. RESULTS During the process of bupivacaine-induce neurotoxicity in DRG, BDNF-AS was significantly upregulated in both dosage- and time- dependent manners. In DRG neurons, siRNA-mediated BDNF-AS downregulation promoted neurite outgrowth, reduced neuronal apoptosis, and phosphorylated TrkB signaling pathway after bupivacaine-induce neurotoxicity. CONCLUSIONS BDNF-AS downregulation rescued local anesthetic-induce neurotoxicity in DRG neurons, probably through the activation of neurotrophin TrkB signaling pathway.
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Affiliation(s)
- Yu Zhang
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; Department of Anesthesiology, Hunan Provincial People's Hospital, Changsha 410002, China
| | - Lulu Yan
- Department of Anesthesiology, Hunan Children's Hospital, Changsha 410007, China
| | - Yan Cao
- Department of Emergency, Hunan Provincial People's Hospital, Changsha 410002, China
| | - Gaoyin Kong
- Department of Anesthesiology, Hunan Provincial People's Hospital, Changsha 410002, China
| | - Chunshui Lin
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Wang Y, Ni H, Zhang W, Wang X, Zhang H. Downregulation of miR-210 protected bupivacaine-induced neurotoxicity in dorsal root ganglion. Exp Brain Res 2015; 234:1057-65. [DOI: 10.1007/s00221-015-4513-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 11/23/2015] [Indexed: 12/25/2022]
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