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Guo Z, Wang Z, Liu Y, Wu H, Zhang Q, Han J, Liu J, Zhang C. Carbon Dots from Lycium barbarum Attenuate Radiation-Induced Bone Injury by Inhibiting Senescence via METTL3/Clip3 in an m 6A-Dependent Manner. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20726-20741. [PMID: 37088945 DOI: 10.1021/acsami.3c01322] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Radiation-induced bone injury management remains a challenge in clinical practice, and there is no effective medicine. Recently, biomass-derived carbon dots (CDs) have attracted attention in biomedical engineering due to the advantages of abundant heteroatoms, low toxicity, and no need to drug loading. Here, we report that CDs, synthesized from Lycium barbarum via hydrothermal strategy, can effectively alleviate radiation-induced bone injury. CCK-8, apoptosis analysis, β-galactosidase staining, quantitative polymerase chain reaction, and western blots demonstrate that CDs can mediate radiation-induced damage and senescence of bone marrow mesenchymal stem cells (BMSCs). CDs regulate osteogenic- and adipogenic-balance after irradiation, shown by alizarin red and oil red O staining. In vivo experiments reveal that CDs prevent the occurrence of osteoradionecrosis in rats, demonstrated by micro-CT and histology examination. The osseointegration of titanium implants installed in irradiated bone is promoted by CDs. Mechanistically, CDs increase the N6-methyladenosine (m6A) level of irradiated BMSCs via the increased methyltransferase-like 3 (METTL3). High-throughput sequencing facilitates detection of increased m6A levels located in the 3'-untranslated regions (UTR) of the CAP-Gly domain containing linker protein 3 (Clip3) mRNA. The dual-luciferase reporter assay shows that 3'UTR is the direct target of METTL3. Subsequently, the increased m6A modification led to enhanced degradation of mRNA and downregulated CLIP3 expression, eventually resulting in the alleviation of radiation-induced bone injury. Interfering with the METTL3/Clip3 axis can antagonize the effect of CDs, indicating that CDs mediate radiation-induced bone injury via the METTL3/Clip3 axis. Taken together, CDs from L. barbarum alleviate radiation-induced bone injury by inhibiting senescence via regulation of m6A modification of Clip3. The present study paves a new pathway for the management of radiation-induced bone injury.
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Affiliation(s)
- Zhiyong Guo
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Zilin Wang
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yige Liu
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Hao Wu
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Qiaoyu Zhang
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Jing Han
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Jiannan Liu
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Chenping Zhang
- Department of Oromaxillofacial-Head & Neck Oncology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, College of Stomatology, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Research Institute of Stomatology, Shanghai Jiao Tong University, Shanghai 200011, China
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Xu R, Jin Y, Tang S, Wang W, Sun YE, Liu Y, Zhang W, Hou B, Huang Y, Ma Z. Association between single nucleotide variants and severe chronic pain in older adult patients after lower extremity arthroplasty. J Orthop Surg Res 2023; 18:184. [PMID: 36895017 PMCID: PMC9999576 DOI: 10.1186/s13018-023-03683-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Hip or knee osteoarthritis (OA) is one of the main causes of disability worldwide and occurs mostly in the older adults. Total hip or knee arthroplasty is the most effective method to treat OA. However, severe postsurgical pain leading to a poor prognosis. So, investigating the population genetics and genes related to severe chronic pain in older adult patients after lower extremity arthroplasty is helpful to improve the quality of treatment. METHODS We collected blood samples from elderly patients who underwent lower extremity arthroplasty from September 2020 to February 2021 at the Drum Tower Hospital Affiliated to Nanjing University Medical School. The enrolled patients provided measures of pain intensity using the numerical rating scale on the 90th day after surgery. Patients were divided into the case group (Group A) and the control group (Group B) including 10 patients respectively by the numerical rating scale. DNA was isolated from the blood samples of the two groups for whole-exome sequencing. RESULTS In total, 661 variants were identified in the 507 gene regions that were significantly different between both groups (P < 0.05), including CASP5, RASGEF1A, CYP4B1, etc. These genes are mainly involved in biological processes, including cell-cell adhesion, ECM-receptor interaction, metabolism, secretion of bioactive substances, ion binding and transport, regulation of DNA methylation, and chromatin assembly. CONCLUSIONS The current study shows some variants within genes are significantly associated with severe postsurgical chronic pain in older adult patients after lower extremity arthroplasty, indicating a genetic predisposition for chronic postsurgical pain. The study was registered according to ICMJE guidelines. The trial registration number is ChiCTR2000031655 and registration date is April 6th, 2020.
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Affiliation(s)
- Rui Xu
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Yinan Jin
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Suhong Tang
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Wenwen Wang
- Department of Anesthesiology, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, 210008, China
| | - Yu-E Sun
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Yue Liu
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Wei Zhang
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Bailing Hou
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China
| | - Yulin Huang
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China.
| | - Zhengliang Ma
- Department of Anesthesiology, Affiliated Drum Tower Hospital, Medical School, Nanjing University, No. 321 of Zhongshan Road, Nanjing, 210008, China.
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Mencias M, Levene M, Blighe K, Bax BE. Circulating miRNAs as Biomarkers for Mitochondrial Neuro-Gastrointestinal Encephalomyopathy. Int J Mol Sci 2021; 22:ijms22073681. [PMID: 33916195 PMCID: PMC8037498 DOI: 10.3390/ijms22073681] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 02/05/2023] Open
Abstract
Mitochondrial neurogastrointestinal encephalomyopathy (MNGIE) is an ultra-rare disease for which there are currently no validated outcome measures for assessing therapeutic intervention efficacy. The aim of this study was to identify a plasma and/or serum microRNA (miRNA) biomarker panel for MNGIE. Sixty-five patients and 65 age and sex matched healthy controls were recruited and assigned to one of four study phases: (i) discovery for sample size determination; (ii) candidate screening; (iii) candidate validation; and (iv) verifying the performance of the validated miRNA panel in four patients treated with erythrocyte-encapsulated thymidine phosphorylase (EE-TP), an enzyme replacement under development for MNGIE. Quantitative PCR (qPCR) was used to profile miRNAs in serum and/or plasma samples collected for the discovery, validation and performance phases, and next generation sequencing (NGS) analysis was applied to serum samples assigned to the candidate screening phase. Forty-one differentially expressed candidate miRNAs were identified in the sera of patients (p < 0.05, log2 fold change > 1). The validation cohort revealed that of those, 27 miRNAs were upregulated in plasma and three miRNAs were upregulated in sera (p < 0.05). Through binary logistic regression analyses, five plasma miRNAs (miR-192-5p, miR-193a-5p, miR-194-5p, miR-215-5p and miR-34a-5p) and three serum miRNAs (miR-192-5p, miR-194-5p and miR-34a-5p) were shown to robustly distinguish MNGIE from healthy controls. Reduced longitudinal miRNA expression of miR-34a-5p was observed in all four patients treated with EE-TP and coincided with biochemical and clinical improvements. We recommend the inclusion of the plasma exploratory miRNA biomarker panel in future clinical trials of investigational therapies for MNGIE; it may have prognostic value for assessing clinical status.
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Affiliation(s)
- Mark Mencias
- Molecular and Clinical Sciences, St. George’s, University of London, London SW17 0RE, UK; (M.M.); (M.L.)
| | - Michelle Levene
- Molecular and Clinical Sciences, St. George’s, University of London, London SW17 0RE, UK; (M.M.); (M.L.)
| | - Kevin Blighe
- Clinical Bioinformatics Research Ltd., London W1B 3HH, UK;
| | - Bridget E. Bax
- Molecular and Clinical Sciences, St. George’s, University of London, London SW17 0RE, UK; (M.M.); (M.L.)
- Correspondence: ; Tel.: +44-(0)208-266-6836
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Chen X, Chen C, Hao J, Zhang J, Zhang F. Effect of CLIP3 Upregulation on Astrocyte Proliferation and Subsequent Glial Scar Formation in the Rat Spinal Cord via STAT3 Pathway After Injury. J Mol Neurosci 2017; 64:117-128. [PMID: 29218499 DOI: 10.1007/s12031-017-0998-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/06/2017] [Indexed: 12/16/2022]
Abstract
Spinal cord injury (SCI) is a devastating event resulting in neuron degeneration and permanent paralysis through inflammatory cytokine overproduction and glial scar formation. Presently, the endogenous molecular mechanisms coordinating glial scar formation in the injured spinal cord remain elusive. Signal transducer and activator of transcription 3 (STAT3) is a well-known transcription factor particularly involving in cell proliferation and inflammation in the lesion site following SCI. Meanwhile, CAP-Gly domain containing linker protein 3(CLIP3), a vital cytoplasmic protein, has been confirmed to providing an optimal conduit for intracellular signal transduction and interacting with STAT3 with mass spectrometry analysis. In this study, we aimed to identify the expression of CLIP3 in the spinal cord as well as its role in mediating astrocyte activation and glial scar formation after SCI by establishing an acute traumatic SCI model in male adult rats. Western blot analysis revealed that CLIP3 increased gradually after injury, reached a peak at day 3. The immunohistochemistry staining showed the same result in white matter. With double immunofluorescence staining, we found that CLIP3 was expressed in glial cells and significant changes of CLIP3 expression occurred in astrocytes during the pathological process. Statistical analysis demonstrated there was a correlation between the number of positive cells stained by CLIP3 and STAT3 in the spinal cord after SCI. Co-immunoprecipitation further indicated that CLIP3 interacted with STAT3 in the injured spinal cord. Taken together, our study clearly suggested that CLIP3 played an essential role in astrocyte activation, associating with the STAT3 pathway activation induced by SCI.
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Affiliation(s)
- Xiaoqing Chen
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.,Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong, Jiangsu, 226001, China
| | - Cheng Chen
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.,Medical Colleges of Nantong University, Nantong, Jiangsu, 226001, China
| | - Jie Hao
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China.,Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong, Jiangsu, 226001, China
| | - Jiyun Zhang
- Medical Colleges of Nantong University, Nantong, Jiangsu, 226001, China.,Department of Radiology, Third Municipal People's Hospital, Nantong, Jiangsu, 226001, China
| | - Feng Zhang
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China. .,Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair, Nantong, Jiangsu, 226001, China.
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Darr AJ, Danzi MC, Brady L, Emig-Agius D, Hackett A, Golshani R, Warner N, Lee J, Lemmon VP, Tsoulfas P. Identification of genome-wide targets of Olig2 in the adult mouse spinal cord using ChIP-Seq. PLoS One 2017; 12:e0186091. [PMID: 29049317 PMCID: PMC5648140 DOI: 10.1371/journal.pone.0186091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 09/25/2017] [Indexed: 11/19/2022] Open
Abstract
In jawed vertebrates, oligodendrocytes (OLs) are the myelin-producing glial cells responsible for ensheathment of axons within the central nervous system and are also crucial for remyelination following injury or disease. Olig2 is a crucial factor in the specification and differentiation of oligodendrocyte precursor cells (OPCs) that give rise to mature, myelin-producing OLs in the developing and postnatal CNS; however, its role in adulthood is less well understood. To investigate the role Olig2 plays in regulating gene expression in the adult OL lineage in a physiologically-relevant context, we performed chromatin immunoprecipitation followed by next generation sequencing analysis (ChIP-Seq) using whole spinal cord tissue harvested from adult mice. We found that many of the Olig2-bound sites were associated with genes with biological processes corresponding to OL differentiation (Nkx2.2, Nkx6.2, and Sip1), myelination and ensheathment (Mbp, Cldn11, and Mobp), as well as cell cycle and cytoskeletal regulation. This suggests Olig2 continues to play a critical role in processes related to OL differentiation and myelination well into adulthood.
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Affiliation(s)
- Andrew J. Darr
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Matt C. Danzi
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- Center for Computational Science, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Lee Brady
- Illumina, Inc., San Diego, California, United States of America
| | | | - Amber Hackett
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | | | - Nikita Warner
- Illumina, Inc., San Diego, California, United States of America
| | - Jae Lee
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Vance P. Lemmon
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- Center for Computational Science, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Pantelis Tsoulfas
- The Miami Project to Cure Paralysis, Miami, Florida, United States of America
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, United States of America
- * E-mail:
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Yang X, Tao Z, Zhu Z, Liao H, Zhao Y, Fan H. MicroRNA-593-3p regulates insulin-promoted glucose consumption by targeting Slc38a1 and CLIP3. J Mol Endocrinol 2016; 57:211-222. [PMID: 27613819 DOI: 10.1530/jme-16-0090] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 09/07/2016] [Indexed: 12/12/2022]
Abstract
Insulin plays an important role in the regulation of glucose metabolism. However, the molecular mechanisms involved are not entirely clarified. In this context, we found that miR-593-3p negatively regulates insulin-regulated glucose metabolism in hepatocellular carcinoma HepG2 and Bel7402 cells. We then identified Slc38a1 and CLIP3 as novel targets of miR-593-3p. Further studies demonstrated that Slc38a1 and CLIP3 mediate insulin-regulated glucose metabolism. Interestingly, we also demonstrated that miR-593-3p expression was negatively associated with Slc38a1 and CLIP3 expression in insulin-treated HepG2 cells, and insulin-induced Slc38a1 and CLIP3 expression via downregulation of miR-593-3p. Taken together, this study indicates that inhibition of miRNA-593-3p by insulin promotes glucose metabolism through the regulation of Slc38a1 and CLIP3 expression, and provides a new insight into the role and mechanism of insulin-induced glycolysis.
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Affiliation(s)
- Xilin Yang
- Department of Otorhinolaryngology - Head and Neck SurgeryRenmin Hospital of Wuhan University, Wuhan, China
| | - Zezhang Tao
- Department of Otorhinolaryngology - Head and Neck SurgeryRenmin Hospital of Wuhan University, Wuhan, China
| | - Zhanyong Zhu
- Department of Plastic SurgeryRenmin Hospital of Wuhan University, Wuhan, China
| | - Hua Liao
- Department of Otorhinolaryngology - Head and Neck SurgeryRenmin Hospital of Wuhan University, Wuhan, China
| | - Yueqiang Zhao
- Department of Plastic SurgeryRenmin Hospital of Wuhan University, Wuhan, China
| | - Huajun Fan
- Department of Plastic SurgeryRenmin Hospital of Wuhan University, Wuhan, China
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Ozyigit F, Kucuk A, Akcer S, Tosun M, Kocak FE, Kocak C, Kocak A, Metineren H, Genc O. Different dose-dependent effects of ebselen in sciatic nerve ischemia-reperfusion injury in rats. Bosn J Basic Med Sci 2015; 15:36-43. [PMID: 26614850 DOI: 10.17305/bjbms.2015.521] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 06/06/2015] [Accepted: 06/06/2015] [Indexed: 11/16/2022] Open
Abstract
Ebselen is an organoselenium compound which has strong antioxidant and anti-inflammatory effects. We investigated the neuroprotective role of ebselen pretreatment in rats with experimental sciatic nerve ischemia-reperfusion (I/R) injury. Adult male Sprague Dawley rats were divided into four groups (N = 7 in each group). Before sciatic nerve I/R was induced, ebselen was injected intraperitoneally at doses of 15 and 30 mg/kg. After a 2 h ischemia and a 3 h reperfusion period, sciatic nerve tissues were excised. Tissue levels of malondialdehyde (MDA) and nitric oxide (NO), and activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) were measured. Sciatic nerve tissues were also examined histopathologically. The 15 mg/kg dose of ebselen reduced sciatic nerve damage and apoptosis (p<0.01), levels of MDA, NO, and inducible nitric oxide synthase (iNOS) positive cells (p<0.01, p<0.05, respectively), and increased SOD, GPx, and CAT activities (p<0.001, p<0.01, p<0.05, respectively) compared with the I/R group that did not receive ebselen. Conversely, the 30 mg/kg dose of ebselen increased sciatic nerve damage, apoptosis, iNOS positive cells (p<0.01, p<0.05, p<0.001) and MDA and NO levels (p<0.05, p<0.01) and decreased SOD, GPx, and CAT activities (p<0.05) compared with the sham group. The results of this study suggest that ebselen may cause different effects depending on the dose employed. Ebselen may be protective against sciatic nerve I/R injury via antioxidant and antiapoptotic activities at a 15 mg/kg dose, conversely higher doses may cause detrimental effects.
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Affiliation(s)
- Filiz Ozyigit
- Dumlupinar University, Faculty of Medicine, Department of Pharmacology, Kutahya, Turkey.
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Ginsenoside Re Promotes Nerve Regeneration by Facilitating the Proliferation, Differentiation and Migration of Schwann Cells via the ERK- and JNK-Dependent Pathway in Rat Model of Sciatic Nerve Crush Injury. Cell Mol Neurobiol 2015; 35:827-40. [DOI: 10.1007/s10571-015-0177-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 03/10/2015] [Indexed: 02/08/2023]
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Yao L, Cao J, Sun H, Guo A, Li A, Ben Z, Zhang H, Wang X, Ding Z, Yang X, Huang X, Ji Y, Zhou Z. FBP1 and p27kip1 expression after sciatic nerve injury: implications for Schwann cells proliferation and differentiation. J Cell Biochem 2014; 115:130-40. [PMID: 23939805 DOI: 10.1002/jcb.24640] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2013] [Accepted: 07/30/2013] [Indexed: 11/09/2022]
Abstract
Far Upstream Element (FUSE) Binding Protein 1 (FBP1), first identified as a single-stranded DNA (ssDNA) binding protein that binds to the FUSE, could modulate c-myc mRNA levels and also has been shown to regulate tumor cell proliferation and replication of virus. Typically, FBP1 could active the translation of p27kip1 (p27) and participate in tumor growth. However, the expression and roles of FBP1 in peripheral system lesions and repair are still unknown. In our study, we found that FBP1 protein levels was relatively higher in the normal sciatic nerves, significantly decreased and reached a minimal level at Day 3, and then returned to the normal level at 4 weeks. Spatially, we observed that FBP1 had a major colocation in Schwann cells and FBP1 was connected with Ki-67 and Oct-6. In vitro, we detected the decreased level of FBP1 and p27 in the TNF-α-induced Schwann cells proliferation model, while increased expression in cAMP-induced Schwann cells differentiation system. Specially, FBP1-specific siRNA-transfected SCs did not show fine and longer morphological change after cAMP treatment and had a decreased motility compared with normal. At 3 days after cAMP treatment and SC/neuron co-cultures, p27 was transported to cytoplasm to form CDK4/6-p27 to participate in SCs differentiation. In conclusion, we speculated that FBP1 and p27 were involved in SCs proliferation and the following differentiation in the sciatic nerve after crush by transporting p27 from nucleus to cytoplasm.
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Affiliation(s)
- Li Yao
- Department of Orthopaedics, Affiliated Jiangyin Hospital of Nantong University, Nantong, Jiangsu 226001, People's Republic of China; Department of Immunology, Medical College, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
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Zhu X, Yao L, Yang X, Sun H, Guo A, Li A, Yang H. Spatiotemporal expression of KHSRP modulates Schwann cells and neuronal differentiation after sciatic nerve injury. Int J Biochem Cell Biol 2013; 48:1-10. [PMID: 24368152 DOI: 10.1016/j.biocel.2013.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 12/01/2013] [Accepted: 12/14/2013] [Indexed: 01/02/2023]
Abstract
K-homology splicing regulator protein (KHSRP), a multifunctional RNA-binding protein, was originally thought to primarily control mRNA decay. KHSRP was shown to be involved in p38MAPK, NF-κB and the JAK2-STAT-1a pathways. Besides, KHSRP regulated neuronal localization of beta-actin and microtubule-associated protein 2 (MAP2) mRNAs, respectively. However, the expression and roles of KHSRP in peripheral system lesions and repair are still unknown. In our study, we found that KHSRP levels were relatively higher in the crushed sciatic nerves, significantly reached a highest level at day 5. Spatially, we observed that KHSRP had a major colocalization with Schwann cells (SCs) and neurons. KHSRP was connected with promyelinating SCs marker. KHSRP promoted the decay of beta-catenin (β-catenin) mRNA which was inactivated by PI3K-AKT signaling. We doubted that KHSRP might participate in Schwann cells differentiation by regulation of β-catenin mRNA decay. In vitro, in cyclic adenosine monophosphate (cAMP)-induced Schwann cells differentiation system, we detected the increased KHSRP in cytoplasm and decreased β-catenin at protein and mRNA level. In differentiation model of rat pheochromocytoma cells (PC12) induced by nerve growth factor (NGF) and primary dorsal root ganglion (DRG) cell culture, KHSRP also acted on neuronal differentiation. Specially, KHSRP-specific siRNA-transfected cells did not show morphological change, which was similar to β-catenin overexpressed SCs. During SC/neuron co-cultures, KHSRP was transported to cytoplasm and involved in SCs myelination. In conclusion, we speculated that KHSRP was involved in SCs and neuronal differentiation by inducing β-catenin mRNA decay.
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Affiliation(s)
- Xiaojian Zhu
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China; Department of Orthopaedics, Affiliated Mental Health Center of Nantong University, Nantong 226001, People's Republic of China
| | - Li Yao
- Department of Immunology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Xiaojing Yang
- Department of Immunology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Huiqing Sun
- Department of Immunology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Aisong Guo
- Department of Immunology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Aihong Li
- Department of Immunology, Medical College, Nantong University, Nantong 226001, Jiangsu, People's Republic of China
| | - Huilin Yang
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, People's Republic of China.
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Cao J, Cheng X, Zhou Z, Sun H, Zhou F, Zhao J, Liu Y, Cui G. Changes in the Foxj1 expression of Schwann cells after sciatic nerve crush. J Mol Histol 2013; 44:391-9. [DOI: 10.1007/s10735-013-9500-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 03/12/2013] [Indexed: 02/03/2023]
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