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Down-regulation miR-146a-5p in Schwann cell-derived exosomes induced macrophage M1 polarization by impairing the inhibition on TRAF6/NF-κB pathway after peripheral nerve injury. Exp Neurol 2023; 362:114295. [PMID: 36493861 DOI: 10.1016/j.expneurol.2022.114295] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 11/23/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Both Schwann cell-derived exosomes (SC-Exos) and macrophagic sub-phenotypes are closely related to the regeneration and repair after peripheral nerve injury (PNI). However, the crosstalk between them is less clear. OBJECTIVE We aim to investigate the roles and underlying mechanisms of exosomes from normoxia-condition Schwann cell (Nor-SC-Exos) and from post-injury oxygen-glucose-deprivation-condition Schwann cell in regulating macrophagic sub-phenotypes and peripheral nerve injury repair. METHOD Both Nor-SC-Exos and OGD-SC-Exos were extracted through ultracentrifugation, identified by transmission electron microscopy (TEM), Nanosight tracking analysis (NTA) and western blotting. High-throughput sequencing was performed to explore the differential expression of microRNAs in both SC-Exos. In vitro, RAW264.7 macrophage was treated with two types of SC-Exos, M1 macrophagic markers (IL-10, Arg-1, TGF-β1) and M2 macrophagic markers (IL-6, IL-1β, TNF-α) were detected by enzyme-linked Immunosorbent Assay (ELISA) or qRT-PCR, and the expression of CD206, iNOS were detected via cellular immunofluorescence (IF) to judge macrophage sub-phenotypes. Dorsal root ganglion neurons (DRGns) were co-cultured with RAW264.7 cells treated with Nor-SC-Exos and OGD-SC-Exos, respectively, to explore their effect on neuron growth. In vivo, we established a sciatic nerve crush injury rat model. Nor-SC-Exos and OGD-SC-Exos were locally injected into the injury site. The mRNA expression of M1 macrophagic markers (IL-10, Arg-1, TGF-β1) and M2 macrophagic markers (IL-6, IL-1β, TNF-α) were detected by qRT-PCR to determine the sub-phenotype of macrophages in the injury site. IF was used to detect the expression of MBP and NF200, reflecting the myelin sheath and axon regeneration, and sciatic nerve function index (SFI) was measured to evaluate function repair. RESULT In vitro, Nor-SC-Exos promoted macrophage M2 polarization, increased anti-inflammation factors secretion, and facilitated axon elongation of DRGns. OGD-SC-Exos promoted M1 polarization, increased pro-inflammation factors secretion, and restrained axon elongation of DRGns. High-throughput sequencing and qRT-PCR results found that compared with Nor-SC-Exos, a shift from anti-inflammatory (pro-M2) to pro-inflammatory (pro-M1) of OGD-SC-Exos was closely related to the down-regulation of miR-146a-5p and its decreasing inhibition on TRAF6/NF-κB pathway after OGD injury. In vivo, we found Nor-SC-Exos and miR-146a-5p mimic promoted regeneration of myelin sheath and axon, and facilitated sciatic function repair via targeting TRAF6, while OGD-SC-Exos and miR-146a-5p inhibitor restrained them. CONCLUSION Our study confirmed that miR-146a-5p was significantly decreased in SC-Exos under the ischemia-hypoxic microenvironment of the injury site after PNI, which mediated its shift from promoting macrophage M2 polarization (anti-inflammation) to promoting M1 polarization (pro-inflammation), thereby limiting axonal regeneration and functional recovery.
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Yin G, Lin Y, Wang P, Zhou J, Lin H. Upregulated lncARAT in Schwann cells promotes axonal regeneration by recruiting and activating proregenerative macrophages. Mol Med 2022; 28:76. [PMID: 35768768 PMCID: PMC9245276 DOI: 10.1186/s10020-022-00501-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 06/15/2022] [Indexed: 11/29/2022] Open
Abstract
Background Axonal regeneration following peripheral nerve injury (PNI) depends on the complex interaction between Schwann cells (SCs) and macrophages, but the mechanisms underlying macrophage recruitment and activation in axonal regeneration remain unclear. Methods RNA sequencing (RNA-seq) was conducted to identify differentially expressed long noncoding RNAs (DElncRNAs) between crushed sciatic nerves and intact contralateral nerves. The putative role of lncRNAs in nerve regeneration was analyzed in vitro and in vivo. Results An lncRNA, called axon regeneration-associated transcript (lncARAT), was upregulated in SCs and SC-derived exosomes (SCs-Exo) after sciatic nerve injury. LncARAT contributed to axonal regeneration and improved motor function recovery. Mechanistically, lncARAT epigenetically activated C–C motif ligand 2 (CCL2) expression by recruiting KMT2A to CCL2 promoter, resulting in increased histone 3 lysine 4 trimethylation (H3K4me3) and CCL2 transcription in SCs. CCL2 facilitated the infiltration of macrophages into the injured nerves. Meanwhile, lncARAT-enriched exosomes were released from SCs and incorporated into macrophages. LncARAT functioned as an endogenous sponge to adsorb miRNA-329-5p in macrophages, resulting in increased suppressor of cytokine signaling (SOCS) 2 expression, which induced a proregenerative function of macrophages through a signal transducer and activator of transcription (STAT) 1/6-dependent pathway. Conclusions LncARAT may represent a promising therapeutic avenue for peripheral nerve repair. Supplementary Information The online version contains supplementary material available at 10.1186/s10020-022-00501-9.
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Affiliation(s)
- Gang Yin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Road100, Shanghai, 200080, People's Republic of China
| | - Yaofa Lin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Road100, Shanghai, 200080, People's Republic of China
| | - Peilin Wang
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Road100, Shanghai, 200080, People's Republic of China
| | - Jun Zhou
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Road100, Shanghai, 200080, People's Republic of China
| | - Haodong Lin
- Department of Orthopedic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Road100, Shanghai, 200080, People's Republic of China.
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Yablonka-Reuveni Z, Stockdale F, Nudel U, Israeli D, Blau HM, Shainberg A, Neuman S, Kessler-Icekson G, Krull EM, Paterson B, Fuchs OS, Greenberg D, Sarig R, Halevy O, Ozawa E, Katcoff DJ. Farewell to Professor David Yaffe - A pillar of the myogenesis field. Eur J Transl Myol 2020; 30:9306. [PMID: 33117511 PMCID: PMC7582454 DOI: 10.4081/ejtm.2020.9306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022] Open
Abstract
It is with great sadness that we have learned about the passing of Professor David Yaffe (1929-2020, Israel). Yehi Zichro Baruch - May his memory be a blessing. David was a man of family, science and nature. A native of Israel, David grew up in the historic years that preceded the birth of the State of Israel. He was a member of the group that established Kibbutz Revivim in the Negev desert, and in 1948 participated in Israel's War of Independence. David and Ruth eventually joined Kibbutz Givat Brenner by Rehovot, permitting David to be both a kibbutz member and a life-long researcher at the Weizmann Institute of Science, where David received his PhD in 1959. David returned to the Institute after his postdoc at Stanford. Here, after several years of researching a number of tissues as models for studying the process of differentiation, David entered the myogenesis field and stayed with it to his last day. With his dedication to the field of myogenesis and his commitment to furthering the understanding of the People and the Land of Israel throughout the international scientific community, David organized the first ever myogenesis meeting that took place in Shoresh, Israel in 1975. This was followed by the 1980 myogenesis meeting at the same place and many more outstanding meetings, all of which brought together myogenesis, nature and scenery. Herein, through the preparation and publication of this current manuscript, we are meeting once again at a "David Yaffe myogenesis meeting". Some of us have been members of the Yaffe lab, some of us have known David as his national and international colleagues in the myology field. One of our contributors has also known (and communicates here) about David Yaffe's earlier years as a kibbutznick in the Negev. Our collective reflections are a tribute to Professor David Yaffe. We are fortunate that the European Journal of Translational Myology has provided us with tremendous input and a platform for holding this 2020 distance meeting "Farwell to Professor David Yaffe - A Pillar of the Myogenesis Field".
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Affiliation(s)
- Zipora Yablonka-Reuveni
- Department of Biological Structure, University of Washington School of Medicine, Seattle, WA, USA
| | | | - Uri Nudel
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | | | - Helen M. Blau
- Stanford University School of Medicine, Institute for Stem Cell Biology and Regenerative Medicine, Department of Microbiology and Immunology, Clinical Sciences Research Center, Stanford, CA, USA
| | - Asher Shainberg
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | | | - Gania Kessler-Icekson
- Laboratory of Cellular and Molecular Cardiology, Felsenstein Medical Research Center, Rabin Medical Center, Petah-Tikva, and Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | - Bruce Paterson
- Laboratory of Biochemistry and Molecular Biology, National Institutes of Health, Bethesda, Maryland, USA
| | | | - David Greenberg
- Department of Biological Chemistry, The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Rachel Sarig
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Orna Halevy
- Faculty of Agriculture, The Hebrew University, Rehovot, Israel
| | - Eijiro Ozawa
- National Institute of Neuroscience, NCNP, Tokyo, Japan
| | - Don J. Katcoff
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
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Guy R, Grynspan F, Ben-Zur T, Panski A, Lamdan R, Danon U, Yaffe D, Offen D. Human Muscle Progenitor Cells Overexpressing Neurotrophic Factors Improve Neuronal Regeneration in a Sciatic Nerve Injury Mouse Model. Front Neurosci 2019; 13:151. [PMID: 30872995 PMCID: PMC6400854 DOI: 10.3389/fnins.2019.00151] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 02/11/2019] [Indexed: 01/21/2023] Open
Abstract
The peripheral nervous system has an intrinsic ability to regenerate after injury. However, this process is slow, incomplete, and often accompanied by disturbing motor and sensory consequences. Sciatic nerve injury (SNI), which is the most common model for studying peripheral nerve injury, is characterized by damage to both motor and sensory fibers. The main goal of this study is to examine the feasibility of administration of human muscle progenitor cells (hMPCs) overexpressing neurotrophic factor (NTF) genes, known to protect peripheral neurons and enhance axon regeneration and functional recovery, to ameliorate motoric and sensory deficits in SNI mouse model. To this end, hMPCs were isolated from a human muscle biopsy, and manipulated to ectopically express brain-derived neurotrophic factor (BDNF), glial-cell-line-derived neurotrophic factor (GDNF), vascular endothelial growth factor (VEGF), and insulin-like growth factor (IGF-1). These hMPC-NTF were transplanted into the gastrocnemius muscle of mice after SNI, and motor and sensory functions of the mice were assessed using the CatWalk XT system and the hot plate test. ELISA analysis showed that genetically manipulated hMPC-NTF express significant amounts of BDNF, GDNF, VEGF, or IGF-1. Transplantation of 3 × 106 hMPC-NTF was shown to improve motor function and gait pattern in mice following SNI surgery, as indicated by the CatWalk XT system 7 days post-surgery. Moreover, using the hot-plate test, performed 6 days after surgery, the treated mice showed less sensory deficits, indicating a palliative effect of the treatment. ELISA analysis following transplantation demonstrated increased NTF expression levels in the gastrocnemius muscle of the treated mice, reinforcing the hypothesis that the observed positive effect was due to the transplantation of the genetically manipulated hMPC-NTF. These results show that genetically modified hMPC can alleviate both motoric and sensory deficits of SNI. The use of hMPC-NTF demonstrates the feasibility of a treatment paradigm, which may lead to rapid, high-quality healing of damaged peripheral nerves due to administration of hMPC. Our approach suggests a possible clinical application for the treatment of peripheral nerve injury.
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Affiliation(s)
- Reut Guy
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Tali Ben-Zur
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Avraham Panski
- Department of Orthopedic Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Ron Lamdan
- Department of Orthopedic Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Uri Danon
- Stem Cell Medicine Ltd., Jerusalem, Israel
| | - David Yaffe
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Daniel Offen
- Laboratory of Neuroscience, Felsenstein Medical Research Center, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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Jang S, Lim J, Lee O. Phase-contrast hard X-ray microscopy using synchrotron radiation for the properties of skeletal muscle in mouse hind limbs. Microsc Res Tech 2017; 80:1221-1228. [DOI: 10.1002/jemt.22920] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 06/06/2017] [Accepted: 07/29/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Sanghun Jang
- Department of Physical Therapy, College of Nursing and Health Science; Gimcheon University; 214, Daehak-ro, Gimcheon City Gyeongbuk 39528 South Korea
| | - Jaehong Lim
- Pohang Accelerator Laboratory; Industrial Technology Convergence Center; POSTECH, 80, Jigokro-127-beongil, Nam-Gu, Pohang Gyeongbuk 37673 South Korea
| | - Onseok Lee
- Department of Medical IT Engineering, College of Medical Sciences; Soonchunhyang University; 22, Soonchunhyang-ro, Asan City Chungnam 31538 South Korea
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Vascular endothelial growth factor-expressing neural stem cell for the treatment of neuropathic pain. Neuroreport 2015; 26:399-404. [PMID: 25793634 DOI: 10.1097/wnr.0000000000000359] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Previously, we determined that vascular endothelial growth factor (VEGF) improves the survival of neural stem cells (NSCs) transplanted into an ischemic environment and effectively enhances angiogenesis. Here, we applied NSCs expressing VEGF (SV-VEGF-NSCs) to treat neuropathic pain. In this study, our goal was to verify the therapeutic effect of SV-VEGF-NSCs by transplanting the cells in a sciatic nerve injury model. We compared the amount of VEGF secreted from DsRed-NSCs (control) or SV-VEGF-NSCs and observed that SV-VEGF-NSCs have a much higher expression level of VEGF. We next investigated whether transplantation with SV-VEGF-NSCs aids functional recovery and pain reduction. We confirmed that transplantation with SV-VEGF-NSCs enhances functional recovery, pain reduction, and remyelination as well as the number of blood vessels compared with the control groups. Our results show that VEGF aids functional recovery and pain reduction in a sciatic nerve injury model.
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Xiao N, Le QT. Neurotrophic Factors and Their Potential Applications in Tissue Regeneration. Arch Immunol Ther Exp (Warsz) 2015; 64:89-99. [PMID: 26611762 DOI: 10.1007/s00005-015-0376-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 11/02/2015] [Indexed: 12/24/2022]
Abstract
Neurotrophic factors are growth factors that can nourish neurons and promote neuron survival and regeneration. They have been studied as potential drug candidates for treating neurodegenerative diseases. Since their identification, there are more and more evidences to indicate that neurotrophic factors are also expressed in non-neuronal tissues and regulate the survival, anti-inflammation, proliferation and differentiation in these tissues. This mini review summarizes the characteristics of the neurotrophic factors and their potential clinical applications in the regeneration of neuronal and non-neuronal tissues.
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Affiliation(s)
- Nan Xiao
- Department of Biomedical Sciences, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, CA, USA.
| | - Quynh-Thu Le
- Department of Radiation Oncology, School of Medicine, Stanford University, Stanford, CA, USA
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Glat MJ, Benninger F, Barhum Y, Ben-Zur T, Kogan E, Steiner I, Yaffe D, Offen D. Ectopic Muscle Expression of Neurotrophic Factors Improves Recovery After Nerve Injury. J Mol Neurosci 2015; 58:39-45. [PMID: 26385386 DOI: 10.1007/s12031-015-0648-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 08/26/2015] [Indexed: 02/05/2023]
Abstract
Sciatic nerve damage is a common medical problem. The main causes include direct trauma, prolonged external nerve compression, and pressure from disk herniation. Possible complications include leg numbness and the loss of motor control. In mild cases, conservative treatment is feasible. However, following severe injury, recovery may not be possible. Neuronal regeneration, survival, and maintenance can be achieved by neurotrophic factors (NTFs). In this study, we examined the potency of combining brain-derived neurotrophic factor (BDNF), glial-derived neurotrophic factor (GDNF), vascular endothelial growth factor (VEGF), and insulin-like growth factor-1 (IGF-1) on the recovery of motor neuron function after crush injury of the sciatic nerve. We show that combined NTF application increases the survival of motor neurons exposed to a hypoxic environment. The ectopic expression of NTFs in the injured muscle improves the recovery of the sciatic nerve after crush injury. A significantly faster recovery of compound muscle action potential (CMAP) amplitude and conduction velocity is observed after muscle injections of viral vectors expressing a mixture of the four NTF genes. Our findings suggest a rationale for using genetic treatment with a combination of NTF-expressing vectors, as a potential therapeutic approach for severe peripheral nerve injury.
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Affiliation(s)
- Micaela Johanna Glat
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel.,Felsenstein Medical Research Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Felix Benninger
- Department of Neurology, Rabin Medical Center, Petach Tikva, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yael Barhum
- Felsenstein Medical Research Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Tali Ben-Zur
- Felsenstein Medical Research Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Elena Kogan
- Department of Neurology, Rabin Medical Center, Petach Tikva, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Israel Steiner
- Department of Neurology, Rabin Medical Center, Petach Tikva, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - David Yaffe
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Daniel Offen
- Sagol School of Neuroscience, Tel-Aviv University, Tel-Aviv, Israel. .,Felsenstein Medical Research Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel. .,The Neuroscience Laboratory, Felsenstein Medical Research Center, Rabin Medical Center, 49100, Petah Tikva, Israel.
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