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Blaszkiewicz M, Tao T, Mensah-Arhin K, Willows JW, Bates R, Huang W, Cao L, Smith RL, Townsend KL. Gene therapy approaches for obesity-induced adipose neuropathy: Device-targeted AAV-mediated neurotrophic factor delivery to adipocytes in subcutaneous adipose. Mol Ther 2024; 32:1407-1424. [PMID: 38429927 PMCID: PMC11081869 DOI: 10.1016/j.ymthe.2024.02.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/15/2023] [Accepted: 02/27/2024] [Indexed: 03/03/2024] Open
Abstract
Maintaining functional adipose innervation is critical for metabolic health. We found that subcutaneous white adipose tissue (scWAT) undergoes peripheral neuropathy (PN) with obesity, diabetes, and aging (reduced small-fiber innervation and nerve/synaptic/growth-cone/vesicle markers, altered nerve activity). Unlike with nerve injuries, peripheral nerves do not regenerate with PN, and therefore new therapies are needed for treatment of this condition affecting 20-30 million Americans. Here, we validated a gene therapy approach using an adipocyte-tropic adeno-associated virus (AAV; serotype Rec2) to deliver neurotrophic factors (brain-derived neurotrophic factor [BDNF] and nerve growth factor [NGF]) directly to scWAT to improve tissue-specific PN as a proof-of-concept approach. AAVRec2-BDNF intra-adipose delivery improved tissue innervation in obese/diabetic mice with PN, but after longer periods of dietary obesity there was reduced efficacy, revealing a key time window for therapies. AAVRec2-NGF also increased scWAT innervation in obese mice and was more effective than BDNF, likely because Rec2 targeted adipocytes, the tissue's endogenous NGF source. AAVRec2-NGF also worked well even after 25 weeks of dietary obesity, unlike BDNF, which likely needs a vector that targets its physiological cellular source (stromal vascular fraction cells). Given the differing effects of AAVs carrying NGF versus BDNF, a combined therapy may be ideal for PN.
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Affiliation(s)
| | - Tianyi Tao
- Department of Neurological Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Kofi Mensah-Arhin
- Department of Neurological Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Jake W Willows
- Department of Neurological Surgery, The Ohio State University, Columbus, OH 43210, USA
| | - Rhiannon Bates
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Wei Huang
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Lei Cao
- Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH 43210, USA
| | - Rosemary L Smith
- College of Engineering, University of Maine, Orono, ME 04469, USA
| | - Kristy L Townsend
- Department of Neurological Surgery, The Ohio State University, Columbus, OH 43210, USA; College of Engineering, University of Maine, Orono, ME 04469, USA.
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2
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Li R, Li DH, Zhang HY, Wang J, Li XK, Xiao J. Growth factors-based therapeutic strategies and their underlying signaling mechanisms for peripheral nerve regeneration. Acta Pharmacol Sin 2020; 41:1289-1300. [PMID: 32123299 PMCID: PMC7608263 DOI: 10.1038/s41401-019-0338-1] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 11/20/2019] [Indexed: 12/21/2022] Open
Abstract
Peripheral nerve injury (PNI), one of the most common concerns following trauma, can result in a significant loss of sensory or motor function. Restoration of the injured nerves requires a complex cellular and molecular response to rebuild the functional axons so that they can accurately connect with their original targets. However, there is no optimized therapy for complete recovery after PNI. Supplementation with exogenous growth factors (GFs) is an emerging and versatile therapeutic strategy for promoting nerve regeneration and functional recovery. GFs activate the downstream targets of various signaling cascades through binding with their corresponding receptors to exert their multiple effects on neurorestoration and tissue regeneration. However, the simple administration of GFs is insufficient for reconstructing PNI due to their short half‑life and rapid deactivation in body fluids. To overcome these shortcomings, several nerve conduits derived from biological tissue or synthetic materials have been developed. Their good biocompatibility and biofunctionality made them a suitable vehicle for the delivery of multiple GFs to support peripheral nerve regeneration. After repairing nerve defects, the controlled release of GFs from the conduit structures is able to continuously improve axonal regeneration and functional outcome. Thus, therapies with growth factor (GF) delivery systems have received increasing attention in recent years. Here, we mainly review the therapeutic capacity of GFs and their incorporation into nerve guides for repairing PNI. In addition, the possible receptors and signaling mechanisms of the GF family exerting their biological effects are also emphasized.
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Affiliation(s)
- Rui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
- School of Chemistry, Sun Yat-sen University, Guangzhou, 510275, China
| | - Duo-Hui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Hong-Yu Zhang
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Jian Wang
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou, Medical University, Wenzhou, 325000, China
| | - Xiao-Kun Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China.
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou, Medical University, Wenzhou, 325000, China.
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de Amorim VCM, Júnior MSO, da Silva AB, David JM, David JPL, de Fátima Dias Costa M, Butt AM, da Silva VDA, Costa SL. Agathisflavone modulates astrocytic responses and increases the population of neurons in an in vitro model of traumatic brain injury. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1921-1930. [PMID: 32444988 DOI: 10.1007/s00210-020-01905-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 05/10/2020] [Indexed: 12/20/2022]
Abstract
Traumatic brain injury (TBI) is a critical health problem worldwide, with a high incidence rate and potentially severe long-term consequences. Depending on the level of mechanical stress, astrocytes react with complex morphological and functional changes known as reactive astrogliosis. In cases of severe tissue injury, astrocytes proliferate in the area immediately adjacent to the lesion to form the glial scar, which is a major barrier to neuronal regeneration in the central nervous system. The flavonoid agathisflavone has been shown to have neuroprotective, neurogenic, and immunomodulatory effects and could have beneficial effects in situations of TBI. In this study, we investigated the effects of agathisflavone on modulating the responses of astrocytes and neurons to injury, using the in vitro scratch wound model of TBI in primary cultures of rat cerebral cortex. In control conditions, the scratch wound induced an astroglial injury response, characterized by upregulation of glial fibrillary acidic protein (GFAP) and hypertrophy, together with the reduction in proportion of neurons within the lesion site. Treatment with agathisflavone (1 μM) decreased astroglial GFAP expression and hypertrophy and induced an increase in the number of neurons and neurite outgrowth into the lesion site. Agathisflavone also induced increased expression of the neurotrophic factors NGF and GDNF, which are associated with the neuroprotective profile of glial cells. These results demonstrate that in an in vitro model of TBI, the flavonoid agathisflavone modulates the astrocytic injury response and glial scar formation, stimulating neural recomposition.
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Affiliation(s)
- Vanessa Cristina Meira de Amorim
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Markley Silva Oliveira Júnior
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Alessandra Bispo da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Jorge M David
- Department of General and Inorganic Chemistry, Institute of Chemistry, Federal University of Bahia, R. Barão de Jeremoabo, Salvador, BA, 40170-115, Brazil
| | - Juceni Pereira Lima David
- Department of Medication, Faculty of Pharmacy, Federal University of Bahia, R. Barão de Jeremoabo, Salvador, BA, 40170-115, Brazil
| | - Maria de Fátima Dias Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Arthur Morgan Butt
- School of Pharmacy and Biomedical Science, University of Portsmouth, Winston Churchill Avenue, Portsmouth, PO1 2UP, UK
| | - Victor Diogenes Amaral da Silva
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil
| | - Silvia Lima Costa
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Av. Reitor Miguel Calmon, Salvador, BA, 40100-902, Brazil.
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Li R, Li D, Wu C, Ye L, Wu Y, Yuan Y, Yang S, Xie L, Mao Y, Jiang T, Li Y, Wang J, Zhang H, Li X, Xiao J. Nerve growth factor activates autophagy in Schwann cells to enhance myelin debris clearance and to expedite nerve regeneration. Theranostics 2020; 10:1649-1677. [PMID: 32042328 PMCID: PMC6993217 DOI: 10.7150/thno.40919] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 10/27/2019] [Indexed: 12/12/2022] Open
Abstract
Rationale: Autophagy in Schwann cells (SCs) is crucial for myelin debris degradation and clearance following peripheral nerve injury (PNI). Nerve growth factor (NGF) plays an important role in reconstructing peripheral nerve fibers and promoting axonal regeneration. However, it remains unclear if NGF effect in enhancing nerve regeneration is mediated through autophagic clearance of myelin debris in SCs. Methods: In vivo, free NGF solution plus with/without pharmacological inhibitors were administered to a rat sciatic nerve crush injury model. In vitro, the primary Schwann cells (SCs) and its cell line were cultured in normal medium containing NGF, their capable of swallowing or clearing degenerated myelin was evaluated through supplement of homogenized myelin fractions. Results: Administration of exogenous NGF could activate autophagy in dedifferentiated SCs, accelerate myelin debris clearance and phagocytosis, as well as promote axon and myelin regeneration at early stage of PNI. These NGF effects were effectively blocked by autophagy inhibitors. In addition, inhibition of the p75 kD neurotrophin receptor (p75NTR) signal or inactivation of the AMP-activated protein kinase (AMPK) also inhibited the NGF effect as well. Conclusions: NGF effect on promoting early nerve regeneration is closely associated with its accelerating autophagic clearance of myelin debris in SCs, which probably regulated by the p75NTR/AMPK/mTOR axis. Our studies thus provide strong support that NGF may serve as a powerful pharmacological therapy for peripheral nerve injuries.
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Li K, Shi X, Luo M, Inam-U-Llah, Wu P, Zhang M, Zhang C, Li Q, Wang Y, Piao F. Taurine protects against myelin damage of sciatic nerve in diabetic peripheral neuropathy rats by controlling apoptosis of schwann cells via NGF/Akt/GSK3β pathway. Exp Cell Res 2019; 383:111557. [PMID: 31415759 DOI: 10.1016/j.yexcr.2019.111557] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/30/2019] [Accepted: 08/10/2019] [Indexed: 12/19/2022]
Abstract
Diabetic peripheral neuropathy is a common complications of Type 2 Diabetes and its main pathological feature is myelin sheath damage of peripheral nerve that was induced by Schwann cells (SCs) apoptosis. Increasing evidence suggested that taurine might play a role in improving DPN because of its ability to prevent SCs apoptosis. In this study, we explore the effect of taurine on preventing SCs apoptosis and its underlying mechanism. Sprague Dawley rats were treated with streptozotocin to establish the diabetes model. Rats were randomly divided into control, diabetes, taurine treatment (as giving 0.5%, 1% and 2% taurine in drinking water) groups. RSC96 cell (a rat SCs line) was used for intervention experiments in vitro. Results showed that taurine significantly corrected morphology of damaged myelin sheath and inhibited SCs apoptosis in sciatic nerve of diabetic rats. Moreover, taurine prevented apoptosis of RSC96 cells exposed to high glucose. Mechanistically, taurine up-regulated NGF expression and phosphorylation levels of Akt and GSK3β, while, blocking activation of NGF and phosphorylation of Akt and GSK3β increased apoptosis of high glucose-exposed RSC96 cells with taurine supplement. These results revealed taurine improved the myelin sheath damage of sciatic nerve in diabetic rats by controlling SCs apoptosis via NGF/Akt/GSK3β signaling pathways, which provides some clues that taurine might be effective and feasible candidate for the treatment of DPN.
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Affiliation(s)
- Kaixin Li
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Xiaoxia Shi
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Mengxin Luo
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Inam-U-Llah
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Pingan Wu
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Mengren Zhang
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China
| | - Cong Zhang
- Department of Food Nutrition and Safety, Dalian Medical University, Dalian, China
| | - Qiujuan Li
- Department of Experimental Teaching Center of Public Health, Dalian Medical University, Dalian, China
| | - Yachen Wang
- Department of Regenerative Medicine Center and Stem Cell Clinical Research Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Fengyuan Piao
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, China; Comprehensive Laboratory, Affiliated Zhong Shan Hospital of Dalian University, Dalian, 116001, China.
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6
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Li R, Li Y, Wu Y, Zhao Y, Chen H, Yuan Y, Xu K, Zhang H, Lu Y, Wang J, Li X, Jia X, Xiao J. Heparin-Poloxamer Thermosensitive Hydrogel Loaded with bFGF and NGF Enhances Peripheral Nerve Regeneration in Diabetic Rats. Biomaterials 2018; 168:24-37. [PMID: 29609091 PMCID: PMC5935004 DOI: 10.1016/j.biomaterials.2018.03.044] [Citation(s) in RCA: 144] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 03/21/2018] [Accepted: 03/24/2018] [Indexed: 12/13/2022]
Abstract
Peripheral nerve injury (PNI) is a major burden to society with limited therapeutic options, and novel biomaterials have great potential for shifting the current paradigm of treatment. With a rising prevalence of chronic illnesses such as diabetes mellitus (DM), treatment of PNI is further complicated, and only few studies have proposed therapies suitable for peripheral nerve regeneration in DM. To provide a supportive environment to restore structure and/or function of nerves in DM, we developed a novel thermo-sensitive heparin-poloxamer (HP) hydrogel co-delivered with basic fibroblast growth factor (bFGF) and nerve growth factor (NGF) in diabetic rats with sciatic nerve crush injury. The delivery vehicle not only had a good affinity for large amounts of growth factors (GFs), but also controlled their release in a steady fashion, preventing degradation in vitro. In vivo, compared with HP hydrogel alone or direct GFs administration, GFs-HP hydrogel treatment is more effective at facilitating Schwann cell (SC) proliferation, leading to an increased expression of nerve associated structural proteins, enhanced axonal regeneration and remyelination, and improved recovery of motor function (all p < 0.05). Our mechanistic investigation also revealed that these neuroprotective and neuroregenerative effects of the GFs-HP hydrogel may be associated with activations of phosphatidylinositol 3 kinase and protein kinase B (PI3K/Akt), janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3), and mitogen-activated protein kinase kinase/extracellular signal-regulated kinase (MAPK/ERK) signaling pathways. Our work provides a promising therapy option for peripheral nerve regeneration in patients with DM.
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Affiliation(s)
- Rui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Yiyang Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Yanqing Wu
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Yingzheng Zhao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Huanwen Chen
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Yuan Yuan
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Ke Xu
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Hongyu Zhang
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Yingfeng Lu
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Jian Wang
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325000, China
| | - Xiaokun Li
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Xiaofeng Jia
- Department of Neurosurgery, Orthopaedics, Anatomy Neurobiology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Department of Biomedical Engineering, Anesthesiology and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China.
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Li R, Wu Y, Zou S, Wang X, Li Y, Xu K, Gong F, Liu Y, Wang J, Liao Y, Li X, Xiao J. NGF Attenuates High Glucose-Induced ER Stress, Preventing Schwann Cell Apoptosis by Activating the PI3K/Akt/GSK3β and ERK1/2 Pathways. Neurochem Res 2017; 42:3005-3018. [PMID: 28762104 DOI: 10.1007/s11064-017-2333-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 05/22/2017] [Accepted: 06/14/2017] [Indexed: 01/24/2023]
Abstract
Diabetic peripheral neuropathy (DPN) is one of the most common and troublesome complications of diabetes mellitus. It has been demonstrated that nerve growth factor (NGF) exerts a pivotal role in the regulation of neuronal growth and the promotion of DPN recovery. However, the exact molecular mechanisms are not well understood. Recent studies have indicated that as a novel therapeutic target, endoplasmic reticulum (ER) stress participates in the onset and progression of DPN. In the present study, it has been demonstrated that NGF prevents the sciatic nerve from degeneration and demyelination in DPN rats. Thus, RSC 96 cells, which retain the characteristic features of Schwann cells (SCs), were cultured in medium containing 30 mM glucose (high glucose, HG) to mimic SCs in DPN mice. The 50-ng/ml dose of NGF was identified to be the optimal concentration for treating an excessive ER stress level under HG conditions for 24 h. We found that NGF treatment significantly inhibits HG-induced ER stress and subsequently suppresses ER-related apoptosis. Further, NGF administration also activates the upstream signaling pathway of ER stress, PI3K/Akt/GSK3β signaling and ERK1/2 signaling. Co-treatment with the PI3K inhibitor LY294002 or ERK1/2 inhibitor U0126 significantly reverses the protective role of NGF on HG-induced excessive ER stress and subsequent apoptosis. These observations suggest that the neuroprotective role of NGF in DPN is mediated by the inhibition of excessive ER stress via the activation of the PI3K/Akt/GSK3β and ERK1/2 signaling pathways.
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Affiliation(s)
- Rui Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yanqing Wu
- The Institute of Life Sciences, Wenzhou University, Wenzhou, 325035, China
| | - Shuang Zou
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xiaofang Wang
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yiyang Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Ke Xu
- The Institute of Life Sciences, Wenzhou University, Wenzhou, 325035, China
| | - Fanghua Gong
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Yanlong Liu
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Jian Wang
- Department of Peripheral Neurosurgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Yi Liao
- Department of Surgery, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, China
| | - Xiaokun Li
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China. .,The Institute of Life Sciences, Wenzhou University, Wenzhou, 325035, China.
| | - Jian Xiao
- Molecular Pharmacology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China. .,The Institute of Life Sciences, Wenzhou University, Wenzhou, 325035, China.
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Li R, Ma J, Wu Y, Nangle M, Zou S, Li Y, Yin J, Zhao Y, Xu H, Zhang H, Li X, Ye QS, Wang J, Xiao J. Dual Delivery of NGF and bFGF Coacervater Ameliorates Diabetic Peripheral Neuropathy via Inhibiting Schwann Cells Apoptosis. Int J Biol Sci 2017; 13:640-651. [PMID: 28539836 PMCID: PMC5441180 DOI: 10.7150/ijbs.18636] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 03/09/2017] [Indexed: 01/09/2023] Open
Abstract
Diabetic neuropathy is a kind of insidious complications that impairs neural and vascular function and ultimately leads to somatic and visceral denervation. Basic fibroblast growth factor (bFGF) and nerve growth factor (NGF) are important neurotrophic factors for stimulating angiogenesis and improving peripheral nerve function. Administrating a single factor has good therapeutic effect on diabetic peripheral neuropathy (DPN). However, the short half-life and rapid diffusion of growth factors under physiological conditions limits its clinical applications. Here, we used a biodegradable coacervate, composed of heparin and polycation, to dominate the combined release of bFGF and NGF in a steady fashion. We found this combined growth factors (GFs) coacervate, administered as a single injection, improved motor and sensory functions, restored morphometric structure and decreased apoptosis of Schwann cells in a rat model of prolonged DPN. Similarly the GFs coacervate, as compared with free bFGF and NGF combination, markedly reduced the apoptosis level of a rat Schwann cell line, RSC 96 cells in vitro. We also demonstrated that neuroprotective effects of the GFs coacervate in both rat DPN model and hyperglycemia-induced RSC 96 cell model is likely due to suppression of endocytoplasmic reticulum stress (ERS).
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Affiliation(s)
- Rui Li
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Jianfeng Ma
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China.,UQ-WMU Joint Research Group for Regenerative Medicine, Oral Health Centre, University of Queensland, Brisbane 4006, Australia
| | - Yanqing Wu
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Matthew Nangle
- UQ-WMU Joint Research Group for Regenerative Medicine, Oral Health Centre, University of Queensland, Brisbane 4006, Australia
| | - Shuang Zou
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Yiyang Li
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Jiayu Yin
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Yingzheng Zhao
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Helin Xu
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Hongyu Zhang
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiaokun Li
- The Institute of Life Sciences, Wenzhou University, Wenzhou 325035, China
| | - Qing Song Ye
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China.,UQ-WMU Joint Research Group for Regenerative Medicine, Oral Health Centre, University of Queensland, Brisbane 4006, Australia
| | - Jian Wang
- Department of Peripheral Neurosurgery, the First Affiliated Hospital Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jian Xiao
- WZMU-JCU Joint Research Group for Stem Cell and Tissue Engineering, Institute of Stem Cell and Tissue Engineering, School of Pharmacy, Wenzhou Medical University, Wenzhou 325035, China
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9
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Bae H, Ra Y, Han C, Kim DJ. Decreased serum level of NGF in alcohol-dependent patients with declined executive function. Neuropsychiatr Dis Treat 2014; 10:2153-7. [PMID: 25419139 PMCID: PMC4235489 DOI: 10.2147/ndt.s72067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The role of neurotrophic factors has been highlighted as a cause of decline in the cognitive function of alcohol-dependent patients. It is known that nerve-growth factor (NGF), one of the neurotrophins, is related to the growth and differentiation of nerve cells, as well as to a decline in cognitive function. The purpose of this study was to investigate the relationship between decreased NGF levels and cognitive decline in alcohol-dependent patients. The serum concentration of NGF was measured in 38 patients with chronic alcohol dependence, and several neuropsychological tests were also performed for cognitive function assessment. The results indicated a significant correlation between serum NGF level and the trail-making test part B, which evaluates executive function, but did not show a significant correlation with other cognitive function tests. An increased serum level of NGF was associated with a decreased completion time in the trail-making test B, and this finding indicates that a high serum level of NGF is related to greater executive function. This finding may imply a protective role of NGF in preventing neuron damage among patients with alcohol dependence. Larger controlled studies will be necessary in the future to investigate this issue further.
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Affiliation(s)
- Hwallip Bae
- Department of Psychiatry, Myongji Hospital, Goyang, Catholic University of Korea, Seoul, South Korea
| | - Youngsun Ra
- Department of Psychiatry, Myongji Hospital, Goyang, Catholic University of Korea, Seoul, South Korea
| | - Changwoo Han
- Department of Psychiatry, Keyo Hospital, Uiwang, Catholic University of Korea, Seoul, South Korea
| | - Dai-Jin Kim
- Department of Psychiatry, Seoul St Mary's Hospital, College of Medicine, Catholic University of Korea, Seoul, South Korea
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