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Gao S, He X, Liu H, Liu Y, Wang H, Zhou Z, Chen L, Ji X, Yang R, Xie J. Multifunctional Bioactive Nanozyme Systems for Enhanced Diabetic Wound Healing. Adv Healthc Mater 2024:e2401580. [PMID: 39077928 DOI: 10.1002/adhm.202401580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/12/2024] [Indexed: 07/31/2024]
Abstract
The protracted transition from inflammation to proliferation in diabetic wound healing poses significant challenges, exacerbated by persistent inflammatory responses and inadequate vascularization. To address these issues, a novel nanozymatic therapeutic approach utilizing asymmetrically structured MnO₂-Au-mSiO₂@aFGF Janus nanoparticles is engineered. Nanozymes featuring a mSiO₂ head and MnO₂ extensions, into which acidic fibroblast growth factor (aFGF) is encapsulated, resulting in MnO₂-Au-mSiO₂@aFGF Janus nanoparticles (mSAM@aFGF), are synthesized. This nanozyme system effectively emulates enzymatic activities of catalase (CAT) and superoxide dismutase (SOD), catalyzing degradation of reactive oxygen species (ROS) and generating oxygen. In addition, controlled release of aFGF fosters tissue regeneration and vascularization. In vitro studies demonstrate that mSAM@aFGF significantly alleviates oxidative stress in cells, and enhances cell proliferation, migration, and angiogenesis. An injectable hydrogel based on photocrosslinked hyaluronic acid (HAMA), incorporating the nanozymatic ROS-scavenging and growth factor-releasing system, is developed. The HAMA-mSAM@aFGF hydrogel exhibits multifaceted benefits in a diabetic wound model, including injectability, wound adhesion, hemostasis, anti-inflammatory effects, macrophage polarization from M1 to M2 phenotype, and promotion of vascularization. These attributes underscore the potential of this system to facilitate transition from chronic inflammation to the proliferative phase of wound repair, offering a promising therapeutic strategy for diabetic wound management.
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Affiliation(s)
- Suyue Gao
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Xuefeng He
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Hengdeng Liu
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Yiling Liu
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Hanwen Wang
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Ziheng Zhou
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Lei Chen
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Xiaoyuan Ji
- Academy of Medical Engineering and Translational Medicine, Medical College, Tianjin University, Tianjin, 300072, China
| | - Ronghua Yang
- Department of Burn and Plastic Surgery, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, Guangdong, 510180, China
| | - Julin Xie
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
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Yin T, Chen Y, Li W, Tang T, Li T, Xie B, Xiao D, He H. Antioxidative Potential and Ameliorative Effects of Rice Bran Fermented with Lactobacillus against High-Fat Diet-Induced Oxidative Stress in Mice. Antioxidants (Basel) 2024; 13:639. [PMID: 38929078 PMCID: PMC11201030 DOI: 10.3390/antiox13060639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/02/2024] [Accepted: 05/16/2024] [Indexed: 06/28/2024] Open
Abstract
Rice bran is an important byproduct of the rice polishing process, rich in nutrients, but it is underutilized and often used as feed or discarded, resulting in a huge amount of waste. In this study, rice bran was fermented by Lactobacillus fermentum MF423 to obtain a product with high antioxidant activity. First, a reliable and efficient method for assessing the antioxidant capacity of the fermentation products was established using high-performance liquid chromatography (HPLC), which ensured the consistency of the batch fermentation. The fermented rice bran product (FLRB) exhibited significant antioxidant activity in cells, C. elegans, and hyperlipidemic mice. Transcriptome analysis of mouse livers showed that the expression of plin5 was upregulated in diabetic mice administered FLRB, thereby preventing the excessive production of free fatty acids (FFAs) and the subsequent generation of large amounts of reactive oxygen species (ROS). These studies lay the foundation for the application of rice bran fermentation products.
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Affiliation(s)
- Tingting Yin
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
| | - Yidan Chen
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
| | - Wenzhao Li
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
| | - Tingting Tang
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
| | - Tong Li
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
| | - Binbin Xie
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China;
| | - Dong Xiao
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China;
| | - Hailun He
- School of Life Sciences, Central South University, Changsha 410083, China; (T.Y.); (Y.C.); (W.L.); (T.T.); (T.L.)
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China;
- State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Xuzhou 221116, China;
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Maiese K. Cornerstone Cellular Pathways for Metabolic Disorders and Diabetes Mellitus: Non-Coding RNAs, Wnt Signaling, and AMPK. Cells 2023; 12:2595. [PMID: 37998330 PMCID: PMC10670256 DOI: 10.3390/cells12222595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/31/2023] [Accepted: 11/07/2023] [Indexed: 11/25/2023] Open
Abstract
Metabolic disorders and diabetes (DM) impact more than five hundred million individuals throughout the world and are insidious in onset, chronic in nature, and yield significant disability and death. Current therapies that address nutritional status, weight management, and pharmacological options may delay disability but cannot alter disease course or functional organ loss, such as dementia and degeneration of systemic bodily functions. Underlying these challenges are the onset of aging disorders associated with increased lifespan, telomere dysfunction, and oxidative stress generation that lead to multi-system dysfunction. These significant hurdles point to the urgent need to address underlying disease mechanisms with innovative applications. New treatment strategies involve non-coding RNA pathways with microRNAs (miRNAs) and circular ribonucleic acids (circRNAs), Wnt signaling, and Wnt1 inducible signaling pathway protein 1 (WISP1) that are dependent upon programmed cell death pathways, cellular metabolic pathways with AMP-activated protein kinase (AMPK) and nicotinamide, and growth factor applications. Non-coding RNAs, Wnt signaling, and AMPK are cornerstone mechanisms for overseeing complex metabolic pathways that offer innovative treatment avenues for metabolic disease and DM but will necessitate continued appreciation of the ability of each of these cellular mechanisms to independently and in unison influence clinical outcome.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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Maiese K. The impact of aging and oxidative stress in metabolic and nervous system disorders: programmed cell death and molecular signal transduction crosstalk. Front Immunol 2023; 14:1273570. [PMID: 38022638 PMCID: PMC10663950 DOI: 10.3389/fimmu.2023.1273570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
Life expectancy is increasing throughout the world and coincides with a rise in non-communicable diseases (NCDs), especially for metabolic disease that includes diabetes mellitus (DM) and neurodegenerative disorders. The debilitating effects of metabolic disorders influence the entire body and significantly affect the nervous system impacting greater than one billion people with disability in the peripheral nervous system as well as with cognitive loss, now the seventh leading cause of death worldwide. Metabolic disorders, such as DM, and neurologic disease remain a significant challenge for the treatment and care of individuals since present therapies may limit symptoms but do not halt overall disease progression. These clinical challenges to address the interplay between metabolic and neurodegenerative disorders warrant innovative strategies that can focus upon the underlying mechanisms of aging-related disorders, oxidative stress, cell senescence, and cell death. Programmed cell death pathways that involve autophagy, apoptosis, ferroptosis, and pyroptosis can play a critical role in metabolic and neurodegenerative disorders and oversee processes that include insulin resistance, β-cell function, mitochondrial integrity, reactive oxygen species release, and inflammatory cell activation. The silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), AMP activated protein kinase (AMPK), and Wnt1 inducible signaling pathway protein 1 (WISP1) are novel targets that can oversee programmed cell death pathways tied to β-nicotinamide adenine dinucleotide (NAD+), nicotinamide, apolipoprotein E (APOE), severe acute respiratory syndrome (SARS-CoV-2) exposure with coronavirus disease 2019 (COVID-19), and trophic factors, such as erythropoietin (EPO). The pathways of programmed cell death, SIRT1, AMPK, and WISP1 offer exciting prospects for maintaining metabolic homeostasis and nervous system function that can be compromised during aging-related disorders and lead to cognitive impairment, but these pathways have dual roles in determining the ultimate fate of cells and organ systems that warrant thoughtful insight into complex autofeedback mechanisms.
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Affiliation(s)
- Kenneth Maiese
- Innovation and Commercialization, National Institutes of Health, Bethesda, MD, United States
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Wu KY, Deng F, Mao XY, Zhou D, Shen WG. Ferroptosis involves in Schwann cell death in diabetic peripheral neuropathy. Open Med (Wars) 2023; 18:20230809. [PMID: 37829841 PMCID: PMC10566555 DOI: 10.1515/med-2023-0809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 10/14/2023] Open
Abstract
Accumulating evidence shows that Schwann cells' (SCs) death caused by high glucose (HG) is involved in the pathological process of diabetic peripheral neuropathy (DPN). Ferroptosis is a novel form of regulatory cell death driven by iron-dependent lipid peroxidation. However, it is not clear whether ferroptosis is involved in the death process of SCs induced by HG. The expression of ferroptosis-related indicators in the serum of DPN patients was detected by ELISA. Subsequently, using cell counting kit‑8, western blot, real-time PCR, and Ki-67 staining, we investigated the effects of HG on the ferroptosis of SCs and initially explored the underlying mechanism. The results showed that the serum levels of glutathione peroxidase 4 (GPX4) and glutathione in patients with DPN decreased, while malondialdehyde levels increased significantly. Then, we observed that erastin and HG induced ferroptosis in SCs, resulting in the decrease in cell activity and the expression level of GPX4 and SLC7A11, which could be effectively reversed by the ferroptosis inhibitor Fer-1. Mechanistically, HG induced ferroptosis in SCs by inhibiting the NRF2 signaling pathway. Our results showed that ferroptosis was involved in the death process of SCs induced by HG. Inhibition of ferroptosis in SCs might create a new avenue for the treatment of DPN.
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Affiliation(s)
- Kai-yan Wu
- Department of Cell Biology, School of Medicine of Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Fei Deng
- Department of Cell Biology, School of Medicine of Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Xin-yu Mao
- Department of Cell Biology, School of Medicine of Yangzhou University, Yangzhou, Jiangsu, 225009, China
| | - Dan Zhou
- Department of Central Laboratory, Jintan Hospital, Jiangsu University, 500 Avenue Jintan, Jintan, Jiangsu, 213200, China
| | - Wei-gan Shen
- Department of Cell Biology, School of Medicine of Yangzhou University, Yangzhou, Jiangsu, 225009, China
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Maiese K. Cognitive Impairment in Multiple Sclerosis. Bioengineering (Basel) 2023; 10:871. [PMID: 37508898 PMCID: PMC10376413 DOI: 10.3390/bioengineering10070871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 07/30/2023] Open
Abstract
Almost three million individuals suffer from multiple sclerosis (MS) throughout the world, a demyelinating disease in the nervous system with increased prevalence over the last five decades, and is now being recognized as one significant etiology of cognitive loss and dementia. Presently, disease modifying therapies can limit the rate of relapse and potentially reduce brain volume loss in patients with MS, but unfortunately cannot prevent disease progression or the onset of cognitive disability. Innovative strategies are therefore required to address areas of inflammation, immune cell activation, and cell survival that involve novel pathways of programmed cell death, mammalian forkhead transcription factors (FoxOs), the mechanistic target of rapamycin (mTOR), AMP activated protein kinase (AMPK), the silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1), and associated pathways with the apolipoprotein E (APOE-ε4) gene and severe acute respiratory syndrome coronavirus (SARS-CoV-2). These pathways are intertwined at multiple levels and can involve metabolic oversight with cellular metabolism dependent upon nicotinamide adenine dinucleotide (NAD+). Insight into the mechanisms of these pathways can provide new avenues of discovery for the therapeutic treatment of dementia and loss in cognition that occurs during MS.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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Monereo-Sánchez J, Jansen JFA, Köhler S, van Boxtel MPJ, Backes WH, Stehouwer CDA, Kroon AA, Kooman JP, Schalkwijk CG, Linden DEJ, Schram MT. The association of prediabetes and type 2 diabetes with hippocampal subfields volume: The Maastricht study. Neuroimage Clin 2023; 39:103455. [PMID: 37356423 PMCID: PMC10310479 DOI: 10.1016/j.nicl.2023.103455] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 06/13/2023] [Accepted: 06/18/2023] [Indexed: 06/27/2023]
Abstract
AIMS/HYPOTHESIS We investigated whether prediabetes, type 2 diabetes, and continuous measures of hyperglycemia are associated with tissue volume differences in specific subfields of the hippocampus. METHODS We used cross-sectional data from 4,724 participants (58.7 ± 8.5 years, 51.5% women) of The Maastricht Study, a population-based prospective cohort. Glucose metabolism status was assessed with an oral glucose tolerance test, and defined as type 2 diabetes (n = 869), prediabetes (n = 671), or normal glucose metabolism (n = 3184). We extracted 12 hippocampal subfield volumes per hemisphere with FreeSurfer v6.0 using T1w and FLAIR 3T MRI images. We used multiple linear regression and linear trend analysis, and adjusted for total intracranial volume, demographic, lifestyle, and cardiovascular risk factors. RESULTS Type 2 diabetes was significantly associated with smaller volumes in the hippocampal subfield fimbria (standardized beta coefficient ± standard error (β ± SE) = -0.195 ± 0.04, p-value < 0.001), the hippocampus proper, i.e. Cornu Ammonis (CA) 1, CA2/3, CA4, dentate gyrus, subiculum and presubiculum (β ± SE < -0.105 ± 0.04, p-value < 0.006); as well as the hippocampal tail (β ± SE = -0.162 ± 0.04, p-value < 0.001). Prediabetes showed no significant associations. However, linear trend analysis indicated a dose-response relation from normal glucose metabolism, to prediabetes, to type 2 diabetes. Multiple continuous measures of hyperglycemia were associated with smaller volumes of the subfields fimbria (β ± SE < -0.010 ± 0.011, p-value < 0.001), dentate gyrus (β ± SE < -0.013 ± 0.010, p-value < 0.002), CA3 (β ± SE < -0.014 ± 0.011, p-value < 0.001), and tail (β ± SE < -0.006 ± 0.012, p-value < 0.003). CONCLUSIONS/INTERPRETATION Type 2 diabetes and measures of hyperglycemia are associated with hippocampal subfield atrophy, independently of lifestyle and cardiovascular risk factors. We found evidence for a dose-response relationship from normal glucose metabolism, to prediabetes, to type 2 diabetes. Prediabetes stages could give a window of opportunity for the early prevention of brain disease.
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Affiliation(s)
- Jennifer Monereo-Sánchez
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Radiology & Nuclear Medicine, Maastricht University Medical Center, The Netherlands
| | - Jacobus F A Jansen
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Radiology & Nuclear Medicine, Maastricht University Medical Center, The Netherlands.
| | - Sebastian Köhler
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Psychiatry and Neuropsychology, Maastricht University Medical Center, The Netherlands; Alzheimer Centrum Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands.
| | - Martin P J van Boxtel
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Psychiatry and Neuropsychology, Maastricht University Medical Center, The Netherlands; Alzheimer Centrum Limburg, Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands.
| | - Walter H Backes
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Radiology & Nuclear Medicine, Maastricht University Medical Center, The Netherlands; School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands.
| | - Coen D A Stehouwer
- School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Internal Medicine, Maastricht University Medical Center, The Netherlands.
| | - Abraham A Kroon
- School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Internal Medicine, Maastricht University Medical Center, The Netherlands.
| | - Jeroen P Kooman
- Department of Internal Medicine, Maastricht University Medical Center, The Netherlands; School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.
| | - Casper G Schalkwijk
- School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Internal Medicine, Maastricht University Medical Center, The Netherlands.
| | - David E J Linden
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands.
| | - Miranda T Schram
- School for Mental Health & Neuroscience, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; School for Cardiovascular Diseases, Faculty of Health, Medicine and Life Sciences, Maastricht University, The Netherlands; Department of Internal Medicine, Maastricht University Medical Center, The Netherlands; Maastricht Heart+Vascular Center, Maastricht University Medical Center, The Netherlands.
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Maiese K. Cellular Metabolism: A Fundamental Component of Degeneration in the Nervous System. Biomolecules 2023; 13:816. [PMID: 37238686 PMCID: PMC10216724 DOI: 10.3390/biom13050816] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 05/05/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
It is estimated that, at minimum, 500 million individuals suffer from cellular metabolic dysfunction, such as diabetes mellitus (DM), throughout the world. Even more concerning is the knowledge that metabolic disease is intimately tied to neurodegenerative disorders, affecting both the central and peripheral nervous systems as well as leading to dementia, the seventh leading cause of death. New and innovative therapeutic strategies that address cellular metabolism, apoptosis, autophagy, and pyroptosis, the mechanistic target of rapamycin (mTOR), AMP activated protein kinase (AMPK), growth factor signaling with erythropoietin (EPO), and risk factors such as the apolipoprotein E (APOE-ε4) gene and coronavirus disease 2019 (COVID-19) can offer valuable insights for the clinical care and treatment of neurodegenerative disorders impacted by cellular metabolic disease. Critical insight into and modulation of these complex pathways are required since mTOR signaling pathways, such as AMPK activation, can improve memory retention in Alzheimer's disease (AD) and DM, promote healthy aging, facilitate clearance of β-amyloid (Aß) and tau in the brain, and control inflammation, but also may lead to cognitive loss and long-COVID syndrome through mechanisms that can include oxidative stress, mitochondrial dysfunction, cytokine release, and APOE-ε4 if pathways such as autophagy and other mechanisms of programmed cell death are left unchecked.
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Affiliation(s)
- Kenneth Maiese
- Cellular and Molecular Signaling, New York, NY 10022, USA
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Gao N, Ma B, Jia H, Hao C, Jin T, Liu X. Translocator protein alleviates allodynia and improves Schwann cell function against diabetic peripheral neuropathy via activation of the Nrf2-dependent antioxidant system and promoting autophagy. Diabet Med 2023; 40:e15090. [PMID: 37013248 DOI: 10.1111/dme.15090] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 02/22/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023]
Abstract
AIMS In diabetes, autophagy and the nuclear factor erythroid-derived-2-like 2 (Nrf2)-dependent antioxidant system are impaired. Translocator protein (TSPO) agonist Ro5-4864 alleviates neuropathic pain, including diabetic peripheral neuropathy (DPN). However, the precise mechanisms remain unclear. Thus, we investigated the effects of Ro5-4864 on autophagy and the Nrf2-dependent antioxidant system in the sciatic nerves of DPN rats. METHODS All rats were randomly assigned to Sham or DPN group. After type 2 diabetes modelling (established by high-fat diet and streptozotocin injection) followed by behavioural tests, established DPN rats were randomly assigned to the DPN group, the Ro (TSPO agonist Ro5-4864) group, the Ro + 3-MA (autophagy inhibitor) group and the Ro + ML385 (Nrf2 inhibitor) group. Behavioural assessments were performed at baseline, on days 3, 7, 14, 21 and 28. Sciatic nerves were collected on day 28 for immunofluorescence, morphological and western blot analyses. RESULTS Ro5-4864 alleviated allodynia and increased myelin sheath thickness and myelin protein expression after DPN. Beclin-1 (p < 0.01) and LC3-II/LC3-I ratio (p < 0.01) decreased and p62 (p < 0.01) accumulated in the DPN rats. Ro5-4864 administration increased the Beclin-1 and LC3-II/LC3-I ratio and decreased p62 accumulation. Furthermore, nuclear Nrf2 contents (p < 0.01) and cytoplasmic HO-1 (p < 0.01) and NQO1 (p < 0.01) expressions were significantly inhibited in the DPN rat, which was also improved by Ro5-4864. All the beneficial effects were abrogated by 3-MA or ML385. CONCLUSION TSPO exhibited a potent analgesic effect and improved Schwann cell function and regeneration against DPN by activating the Nrf2-dependent antioxidant system and promoting autophagy.
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Affiliation(s)
- Nan Gao
- Pain Management Center, Shanghai Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 210092, China
| | - Bingjie Ma
- Pain Management Center, Shanghai Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 210092, China
| | - Hongbin Jia
- Pain Management Center, Nanjing Jinling Hospital, Nanjing, 210002, China
| | - Can Hao
- Pain Management Center, Shanghai Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 210092, China
| | - Tian Jin
- Pain Management Center, Shanghai Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 210092, China
| | - Xiaoming Liu
- Pain Management Center, Shanghai Xinhua Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, 210092, China
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Tong MQ, Lu CT, Huang LT, Yang JJ, Yang ST, Chen HB, Xue PP, Luo LZ, Yao Q, Xu HL, Zhao YZ. Polyphenol-driven facile assembly of a nanosized acid fibroblast growth factor-containing coacervate accelerates the healing of diabetic wounds. Acta Biomater 2023; 157:467-486. [PMID: 36460288 DOI: 10.1016/j.actbio.2022.11.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/23/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022]
Abstract
Diabetic wounds are challenging to heal due to complex pathogenic abnormalities. Routine treatment with acid fibroblast growth factor (aFGF) is widely used for diabetic wounds but hardly offers a satisfying outcome due to its instability. Despite the emergence of various nanoparticle-based protein delivery approaches, it remains challenging to engineer a versatile delivery system capable of enhancing protein stability without the need for complex preparation. Herein, a polyphenol-driven facile assembly of nanosized coacervates (AE-NPs) composed of aFGF and Epigallocatechin-3-gallate (EGCG) was constructed and applied in the healing of diabetic wounds. First, the binding patterns of EGCG and aFGF were predicted by molecular docking analysis. Then, the characterizations demonstrated that AE-NPs displayed higher stability in hostile conditions than free aFGF by enhancing the binding activity of aFGF to cell surface receptors. Meanwhile, the AE-NPs also had a powerful ability to scavenge reactive oxygen species (ROS) and promote angiogenesis, which significantly accelerated full-thickness excisional wound healing in diabetic mice. Besides, the AE-NPs suppressed the early scar formation by improving collagen remodeling and the mechanism was associated with the TGF-β/Smad signaling pathway. Conclusively, AE-NPs might be a potential and facile strategy for stabilizing protein drugs and achieving the scar-free healing of diabetic wounds. STATEMENT OF SIGNIFICANCE: Diabetic chronic wound is among the serious complications of diabetes that eventually cause the amputation of limbs. Herein, a polyphenol-driven facile assembly of nanosized coacervates (AE-NPs) composed of aFGF and EGCG was constructed. The EGCG not only acted as a carrier but also possessed a therapeutic effect of ROS scavenging. The AE-NPs enhanced the binding activity of aFGF to cell surface receptors on the cell surface, which improved the stability of aFGF in hostile conditions. Moreover, AE-NPs significantly accelerated wound healing and improved collagen remodeling by regulating the TGF-β/Smad signaling pathway. Our results bring new insights into the field of polyphenol-containing nanoparticles, showing their potential as drug delivery systems of macromolecules to treat diabetic wounds.
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Affiliation(s)
- Meng-Qi Tong
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Cui-Tao Lu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lan-Tian Huang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jiao-Jiao Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Si-Ting Yang
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Hang-Bo Chen
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Peng-Peng Xue
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Lan-Zi Luo
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Qing Yao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - He-Lin Xu
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Department of Ultrasonography, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang 325000, China.
| | - Ying-Zheng Zhao
- Department of Pharmaceutics, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China; Department of Ultrasonography, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou City, Zhejiang 325000, China.
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Gu WL, Li ZH, Zhang SQ, Ao P, Zhu XB, Zhao X, Zhang XY, Zhang DF, Huang XJ, Jiang Y, Wei L. Role of Fibrinogen in Type-2 Diabetes Mellitus with Diabetic Neuropathy and its Preliminary Mechanism. Protein Pept Lett 2023; 30:486-497. [PMID: 37165590 PMCID: PMC10494282 DOI: 10.2174/0929866530666230509140515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 03/10/2023] [Accepted: 04/05/2023] [Indexed: 05/12/2023]
Abstract
INTRODUCTION Diabetic peripheral neuropathy (DN) is the most common complication of type 2 diabetes mellitus (T2DM). OBJECTIVE This study aimed to explore the role of fibrinogen (FIB) in T2DM neuropathy and its preliminary mechanism. METHODS Ten male Sprague-Dawley rats were divided into a normal control group (NC group) and a T2DM neuropathy model group (DN group). The DN group was given a high-energy diet and streptozotocin, while the NC group was given a normal diet and a citric acid buffer. The expression levels of related proteins were analysed. RESULTS Electrophysiology: Compared with the NC group, the conduction latency of the somatosensory-evoked potential and nerve conduction velocity was prolonged in the DN group, while the motor nerve action potential was decreased. As seen under a light microscope, the peripheral nerve fibres in the DN group were swollen, and the nerve fibres in the posterior funiculus of the spinal cord were loose or missing. Moreover, as seen under an electron microscope, the peripheral nerve demyelination of the DN group was severe, with microvascular blood coagulation, luminal stenosis, and collapse. Compared with the NC group, in the DN group, the expression of FIB was positively correlated with the expression of both ionised calcium-binding adaptor molecule-1 and glial fibrillary acidic protein. Compared with the NC group, in the DN group, the expression of platelet/endothelial cell adhesion molecule-1 and B-cell lymphoma 2 was negatively correlated. CONCLUSION The increased concentration of FIB may be the cause of neuropathy, and its mechanism may be related to its promotion of inflammatory response, blood coagulation, and vascular stenosis.
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Affiliation(s)
- Wei-Li Gu
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Zhen-Hong Li
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Si-Qin Zhang
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
| | - Pian Ao
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
| | - Xiao-Bei Zhu
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Xin Zhao
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
| | - Xin-Yue Zhang
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
| | - Deng-Feng Zhang
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Xiao-Juan Huang
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Yu Jiang
- Department of Ultrasound Diagnosis, 923 Hospital of the People’s Liberation Army, Nanning, 530021, China
| | - Li Wei
- College of Basic Medicine, Guangxi Medical University, Nanning, 530021, China
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12
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Maiese K. Pyroptosis, Apoptosis, and Autophagy: Critical Players of Inflammation and Cell Demise in the Nervous System. Curr Neurovasc Res 2022; 19:241-244. [PMID: 35909267 DOI: 10.2174/1567202619666220729093449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Ornitz DM, Itoh N. New developments in the biology of fibroblast growth factors. WIREs Mech Dis 2022; 14:e1549. [PMID: 35142107 PMCID: PMC10115509 DOI: 10.1002/wsbm.1549] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 01/28/2023]
Abstract
The fibroblast growth factor (FGF) family is composed of 18 secreted signaling proteins consisting of canonical FGFs and endocrine FGFs that activate four receptor tyrosine kinases (FGFRs 1-4) and four intracellular proteins (intracellular FGFs or iFGFs) that primarily function to regulate the activity of voltage-gated sodium channels and other molecules. The canonical FGFs, endocrine FGFs, and iFGFs have been reviewed extensively by us and others. In this review, we briefly summarize past reviews and then focus on new developments in the FGF field since our last review in 2015. Some of the highlights in the past 6 years include the use of optogenetic tools, viral vectors, and inducible transgenes to experimentally modulate FGF signaling, the clinical use of small molecule FGFR inhibitors, an expanded understanding of endocrine FGF signaling, functions for FGF signaling in stem cell pluripotency and differentiation, roles for FGF signaling in tissue homeostasis and regeneration, a continuing elaboration of mechanisms of FGF signaling in development, and an expanding appreciation of roles for FGF signaling in neuropsychiatric diseases. This article is categorized under: Cardiovascular Diseases > Molecular and Cellular Physiology Neurological Diseases > Molecular and Cellular Physiology Congenital Diseases > Stem Cells and Development Cancer > Stem Cells and Development.
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Affiliation(s)
- David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Nobuyuki Itoh
- Kyoto University Graduate School of Pharmaceutical Sciences, Sakyo, Kyoto, Japan
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14
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Effects of heme oxygenase 1 in the molecular changes and neuropathy associated with type 2 diabetes in mice. Biochem Pharmacol 2022; 199:114987. [PMID: 35276215 DOI: 10.1016/j.bcp.2022.114987] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 12/26/2022]
Abstract
Painful diabetic neuropathy is one of the most common complications of diabetes in humans. The current treatments are not completely effective, and the main mechanisms implicated in the development of diabetic neuropathy are not completely elucidated. Thus, in male db/db mice, a murine model of type 2 diabetes, we investigated the effects of treatment with a heme oxygenase 1 (HO-1) inducer, cobalt protoporphyrin IX (CoPP), on the 1) hyperglycemia and mechanical allodynia associated with type 2 diabetes and 2) molecular changes induced by diabetic neuropathy in the central nervous system (CNS). Thus, we evaluated the effects of CoPP on the protein levels of 4-HNE (oxidative stress), Nrf2, superoxide dismutase 1 (SOD1), NAD(P)H quinone oxidoreductase 1 (NQO1), HO-1, glutathione S-transferase Mu 1 (GSTM1) (antioxidant enzymes), phosphatidylinositol 3-kinase/protein kinase B (nociceptive pathway), CD11b/c (microglial activation), and BAX (apoptosis) in the amygdala and spinal cord of db/db mice. Our results showed the antihyperglycemic and antiallodynic effects of CoPP treatment as well as the potent antioxidant, antinociceptive, anti-inflammatory, and antiapoptotic properties of this HO-1 inducer in the CNS of type 2 diabetic mice. Treatment with CoPP also prevented the downregulation of several antioxidant proteins (Nrf2, SOD-1, and NQO1) and/or enhanced the protein levels of HO-1 and GSTM1 in the spinal cord and/or amygdala of db/db mice. These effects might be implicated in the antiallodynic actions of CoPP. Our findings revealed the modulatory effects of CoPP in the CNS of db/db mice and provide new prospects for novel type 2 diabetes-associated neuropathy therapies.
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15
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Li X, Xiao GY, Guo T, Song YJ, Li QM. Potential therapeutic role of pyroptosis mediated by the NLRP3 inflammasome in type 2 diabetes and its complications. Front Endocrinol (Lausanne) 2022; 13:986565. [PMID: 36387904 PMCID: PMC9646639 DOI: 10.3389/fendo.2022.986565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 10/13/2022] [Indexed: 11/25/2022] Open
Abstract
As a new way of programmed cell death, pyroptosis plays a vital role in many diseases. In recent years, the relationship between pyroptosis and type 2 diabetes (T2D) has received increasing attention. Although the current treatment options for T2D are abundant, the occurrence and development of T2D appear to continue, and the poor prognosis and high mortality of patients with T2D remain a considerable burden in the global health system. Numerous studies have shown that pyroptosis mediated by the NLRP3 inflammasome can affect the progression of T2D and its complications; targeting the NLRP3 inflammasome has potential therapeutic effects. In this review, we described the molecular mechanism of pyroptosis more comprehensively, discussed the most updated progress of pyroptosis mediated by NLRP3 inflammasome in T2D and its complications, and listed some drugs and agents with potential anti-pyroptosis effects. Based on the available evidence, exploring more mechanisms of the NLRP3 inflammasome pathway may bring more options and benefits for preventing and treating T2D and drug development.
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Xu J, Cai S, Zhao J, Xu K, Ji H, Wu C, Xiao J, Wu Y. Advances in the Relationship Between Pyroptosis and Diabetic Neuropathy. Front Cell Dev Biol 2021; 9:753660. [PMID: 34712670 PMCID: PMC8545826 DOI: 10.3389/fcell.2021.753660] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/14/2021] [Indexed: 12/28/2022] Open
Abstract
Pyroptosis is a novel programmed cell death process that promotes the release of interleukin-1β (IL-1β) and interleukin-18 (IL-18) by activating inflammasomes and gasdermin D (GSDMD), leading to cell swelling and rupture. Pyroptosis is involved in the regulation of the occurrence and development of cardiovascular and cerebrovascular diseases, tumors, and nerve injury. Diabetes is a metabolic disorder characterized by long-term hyperglycemia, insulin resistance, and chronic inflammation. The people have paid more and more attention to the relationship between pyroptosis, diabetes, and its complications, especially its important regulatory significance in diabetic neurological diseases, such as diabetic encephalopathy (DE) and diabetic peripheral neuropathy (DPN). This article will give an in-depth overview of the relationship between pyroptosis, diabetes, and its related neuropathy, and discuss the regulatory pathway and significance of pyroptosis in diabetes-associated neuropathy.
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Affiliation(s)
- Jingyu Xu
- Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Shufang Cai
- Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Jiaxin Zhao
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Ke Xu
- Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Hao Ji
- Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, The Institute of Life Sciences, Wenzhou University, Wenzhou, China
| | - Chengbiao Wu
- Clinical Research Center, Affiliated Xiangshan Hospital, Wenzhou Medical University, Wenzhou, China
| | - Jian Xiao
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yanqing Wu
- Engineering Laboratory of Zhejiang Province for Pharmaceutical Development of Growth Factors, Biomedical Collaborative Innovation Center of Wenzhou, The Institute of Life Sciences, Wenzhou University, Wenzhou, China
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Human Umbilical Cord Mesenchymal Stem Cell-Derived Extracellular Vesicles Promote the Proliferation of Schwann Cells by Regulating the PI3K/AKT Signaling Pathway via Transferring miR-21. Stem Cells Int 2021; 2021:1496101. [PMID: 34552631 PMCID: PMC8452411 DOI: 10.1155/2021/1496101] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/07/2021] [Indexed: 12/13/2022] Open
Abstract
As an alternative mesenchymal stem cell- (MSC-) based therapy, MSC-derived extracellular vesicles (EVs) have shown promise in the field of regenerative medicine. We previously found that human umbilical cord mesenchymal stem cell-derived EVs (hUCMSC-EVs) improved functional recovery and nerve regeneration in a rat model of sciatic nerve transection. However, the underlying mechanisms are poorly understood. Here, we demonstrated for the first time that hUCMSC-EVs promoted the proliferation of Schwann cells by activating the PI3K/AKT signaling pathway. Furthermore, we showed that hUCMSC-EVs mediated Schwann cell proliferation via transfer of miR-21. Our findings highlight a novel mechanism of hUCMSC-EVs in treating peripheral nerve injury and suggest that hUCMSC-EVs may be an attractive option for clinical application in the treatment of peripheral nerve injury.
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Ai X, Wu C, Yin T, Zhur O, Liu C, Yan X, Yi C, Liu D, Xiao L, Li W, Xie B, He H. Antidiabetic Function of Lactobacillus fermentum MF423-Fermented Rice Bran and Its Effect on Gut Microbiota Structure in Type 2 Diabetic Mice. Front Microbiol 2021; 12:682290. [PMID: 34248898 PMCID: PMC8266379 DOI: 10.3389/fmicb.2021.682290] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/10/2021] [Indexed: 01/10/2023] Open
Abstract
Rice bran is an industrial byproduct that exerts several bioactivities despite its limited bioavailability. In this study, rice bran fermented with Lactobacillus fermentum MF423 (FLRB) had enhanced antidiabetic effects both in vitro and in vivo. FLRB could increase glucose consumption and decrease lipid accumulation in insulin resistant HepG2 cells. Eight weeks of FLRB treatment significantly reduced the levels of blood glucose and lipids and elevated antioxidant activity in type 2 diabetic mellitus (T2DM) mice. H&E staining revealed alleviation of overt lesions in the livers of FLRB-treated mice. Moreover, high-throughput sequencing showed notable variation in the composition of gut microbiota in FLRB-treated mice, especially for short-chain fatty acids (SCFAs)-producing bacteria such as Dubosiella and Lactobacillus. In conclusion, our results suggested that rice bran fermentation products can modulate the intestinal microbiota and improve T2DM-related biochemical abnormalities, so they can be applied as potential probiotics or dietary supplements.
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Affiliation(s)
- Xiaojuan Ai
- School of Life Sciences, Central South University, Changsha, China
| | - Cuiling Wu
- Department of Biochemistry, Changzhi Medical College, Changzhi, China
| | - Tingting Yin
- School of Life Sciences, Central South University, Changsha, China
| | - Olena Zhur
- School of Life Sciences, Central South University, Changsha, China
| | - Congling Liu
- School of Life Sciences, Central South University, Changsha, China
| | - Xiaotao Yan
- School of Life Sciences, Central South University, Changsha, China
| | - CuiPing Yi
- School of Chemistry and Biology Engineering, Changsha University of Science and Technology, Changsha, China
| | - Dan Liu
- Department of Biochemistry and Molecular Biology, School of Preclinical Medicine, Guangxi Medical University, Nanning, China
| | - Linhu Xiao
- School of Life Sciences, Central South University, Changsha, China
| | - Wenkai Li
- School of Life Sciences, Central South University, Changsha, China
| | - Binbin Xie
- Microbial Technology Institute and State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Hailun He
- School of Life Sciences, Central South University, Changsha, China
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Sun WM, Ma CL, Xu J, He JP. Reduction in post-spinal cord injury spasticity by combination of peripheral nerve grafting and acidic fibroblast growth factor infusion in monkeys. J Int Med Res 2021; 49:3000605211022294. [PMID: 34154433 PMCID: PMC8236803 DOI: 10.1177/03000605211022294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE Spasticity is a frequent complication after spinal cord injury (SCI), but the existing therapies provide only limited relief and are associated with adverse reactions. Therefore, we aimed to develop a novel strategy to ameliorate the spasticity induced by SCI. METHODS This nonrandomized controlled study used a repeated measurement design. The study involved four monkeys, two of which served as controls and only underwent spinal cord hemisection surgery at the T8 spine level. The other two monkeys underwent transplantation of sural nerve segments into the injured sites and long-term infusion of acidic fibroblast growth factor (aFGF). All monkeys received postoperative exercise training and therapy. RESULTS The combined therapy substantially reduced the spasticity in leg muscle tone, patella tendon reflex, and fanning of toes. Although all monkeys showed spontaneous recovery of function over time, the recovery in the controls reached a plateau and started to decline after 11 weeks. CONCLUSIONS The combination of peripheral nerve grafting and aFGF infusion may serve as a complementary approach to reduce the signs of spasticity in patients with SCI.
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Affiliation(s)
- Wei-Ming Sun
- Institute of Life Science, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
| | - Chao-Lin Ma
- Institute of Life Science, Nanchang University, Nanchang, China.,School of Life Science, Nanchang University, Nanchang, China
| | - Jiang Xu
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ji-Ping He
- Center for Neural Interface Design, School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
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