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Kang YJ, Hyeon SJ, McQuade A, Lim J, Baek SH, Diep YN, Do KV, Jeon Y, Jo D, Lee CJ, Blurton‐Jones M, Ryu H, Cho H. Neurotoxic Microglial Activation via IFNγ-Induced Nrf2 Reduction Exacerbating Alzheimer's Disease. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2304357. [PMID: 38482922 PMCID: PMC11132036 DOI: 10.1002/advs.202304357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 01/08/2024] [Indexed: 05/29/2024]
Abstract
Microglial neuroinflammation appears to be neuroprotective in the early pathological stage, yet neurotoxic, which often precedes neurodegeneration in Alzheimer's disease (AD). However, it remains unclear how the microglial activities transit to the neurotoxic state during AD progression, due to complex neuron-glia interactions. Here, the mechanism of detrimental microgliosis in AD by employing 3D human AD mini-brains, brain tissues of AD patients, and 5XFAD mice is explored. In the human and animal AD models, amyloid-beta (Aβ)-overexpressing neurons and reactive astrocytes produce interferon-gamma (IFNγ) and excessive oxidative stress. IFNγ results in the downregulation of mitogen-activated protein kinase (MAPK) and the upregulation of Kelch-like ECH-associated Protein 1 (Keap1) in microglia, which inactivate nuclear factor erythroid-2-related factor 2 (Nrf2) and sensitize microglia to the oxidative stress and induces a proinflammatory microglia via nuclear factor kappa B (NFκB)-axis. The proinflammatory microglia in turn produce neurotoxic nitric oxide and proinflammatory mediators exacerbating synaptic impairment, phosphorylated-tau accumulation, and discernable neuronal loss. Interestingly, recovering Nrf2 in the microglia prevents the activation of proinflammatory microglia and significantly blocks the tauopathy in AD minibrains. Taken together, it is envisioned that IFNγ-driven Nrf2 downregulation in microglia as a key target to ameliorate AD pathology.
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Affiliation(s)
- You Jung Kang
- Institute of Quantum BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
| | - Seung Jae Hyeon
- Center for Brain DisordersBrain Science InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea
| | - Amanda McQuade
- Institute for Neurodegenerative DiseasesUniversity of CaliforniaSan FranciscoCA94158USA
- Department of Neurobiology & BehaviorUniversity of California IrvineIrvineCA92697USA
- Sue and Bill Gross Stem Cell Research CenterUniversity of California IrvineIrvineCA92697USA
- Institute for Memory Impairments and Neurological DisordersUniversity of California IrvineIrvineCA92697USA
| | - Jiwoon Lim
- IBS SchoolUniversity of Science and Technology (UST)Daejeon34114Republic of Korea
- Center for Cognition and SocialityInstitute for Basic Science (IBS)Daejeon34126Republic of Korea
| | - Seung Hyun Baek
- School of PharmacySungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
| | - Yen N. Diep
- Institute of Quantum BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of Intelligent Precision Healthcare ConvergenceSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
| | - Khanh V. Do
- Institute of Quantum BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of Intelligent Precision Healthcare ConvergenceSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
| | - Yeji Jeon
- School of PharmacySungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
| | - Dong‐Gyu Jo
- School of PharmacySungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Biomedical Institute for ConvergenceSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Samsung Advanced Institute for Health Sciences and TechnologySungkyunkwan UniversitySeoul16419Republic of Korea
| | - C. Justin Lee
- Center for Cognition and SocialityInstitute for Basic Science (IBS)Daejeon34126Republic of Korea
| | - Mathew Blurton‐Jones
- Department of Neurobiology & BehaviorUniversity of California IrvineIrvineCA92697USA
- Sue and Bill Gross Stem Cell Research CenterUniversity of California IrvineIrvineCA92697USA
- Institute for Memory Impairments and Neurological DisordersUniversity of California IrvineIrvineCA92697USA
| | - Hoon Ryu
- Center for Brain DisordersBrain Science InstituteKorea Institute of Science and TechnologySeoul02792Republic of Korea
| | - Hansang Cho
- Institute of Quantum BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of BiophysicsSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
- Department of Intelligent Precision Healthcare ConvergenceSungkyunkwan UniversitySuwonGyeonggi16419Republic of Korea
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Pant T, Uche N, Juric M, Zielonka J, Bai X. Regulation of immunomodulatory networks by Nrf2-activation in immune cells: Redox control and therapeutic potential in inflammatory diseases. Redox Biol 2024; 70:103077. [PMID: 38359749 PMCID: PMC10877431 DOI: 10.1016/j.redox.2024.103077] [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: 12/30/2023] [Revised: 01/26/2024] [Accepted: 02/05/2024] [Indexed: 02/17/2024] Open
Abstract
Inflammatory diseases present a serious health challenge due to their widespread prevalence and the severe impact on patients' lives. In the quest to alleviate the burden of these diseases, nuclear factor erythroid 2-related factor 2 (Nrf2) has emerged as a pivotal player. As a transcription factor intimately involved in cellular defense against metabolic and oxidative stress, Nrf2's role in modulating the inflammatory responses of immune cells has garnered significant attention. Recent findings suggest that Nrf2's ability to alter the redox status of cells underlies its regulatory effects on immune responses. Our review delves into preclinical and clinical evidence that underscores the complex influence of Nrf2 activators on immune cell phenotypes, particularly in the inflammatory milieu. By offering a detailed analysis of Nrf2's role in different immune cell populations, we cast light on the potential of Nrf2 activators in shaping the immune response towards a more regulated state, mitigating the adverse effects of inflammation through modeling redox status of immune cells. Furthermore, we explore the innovative use of nanoencapsulation techniques that enhance the delivery and efficacy of Nrf2 activators, potentially advancing the treatment strategies for inflammatory ailments. We hope this review will stimulate the development and expansion of Nrf2-targeted treatments that could substantially improve outcomes for patients suffering from a broad range of inflammatory diseases.
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Affiliation(s)
- Tarun Pant
- Department of Medicine, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA; Department of Pediatrics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
| | - Nnamdi Uche
- Department of Pharmacology and Center for Pharmacogenomics, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Matea Juric
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA
| | - Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA
| | - Xiaowen Bai
- Department of Cell Biology, Neurobiology & Anatomy, Medical College of Wisconsin, 8701 Watertown Plank Road, Milwaukee, WI, 53226, USA.
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Ma L, Xiao C, Zhang Z, Zhan YA. Exosomes secreted from induced pluripotent stem cell ameliorate the lipopolysaccharide induced neuroinflammatory response via lncRNA-0949. Immun Inflamm Dis 2024; 12:e1155. [PMID: 38533916 DOI: 10.1002/iid3.1155] [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: 06/12/2023] [Revised: 11/01/2023] [Accepted: 01/05/2024] [Indexed: 03/28/2024] Open
Abstract
PURPOSE To study the effect of exosomes derived from the induced pluripotent stem cells (iPSCs) in the neuroinflammatory response of microglia caused by lipopolysaccharide (LPS) and reveal the potential underlying mechanism. METHODS A permanent microglia cell line HMO6 was activated by LPS. The features of exosomes were analyzed by nano flow cytometry, Western blot and transmission electron microscope. The RNA-seq was used to analyze the difference of noncoding RNA profiles between iPSC-Exos and HMO6 derived exosomes and proved that long no-coding RNA (lncRNA-0949) was highly expressed in the iPSC-Exos. Activated HMO6 cells were cocultured with iPSC-Exos in which lncRNA-0949 was overexpressed, knocked down or normally expressed. Quantitative real-time polymerase chain reaction (RT-qPCR), Enzyme-Linked Immunosorbent Assay and Western blot assay were adopted to analyze RNA and protein expression of inflammatory factors in HMO6 cells. RESULTS The oxidative stress and inflammatory response of microglia were significantly attenuated with the iPSC derived exosomes treatment. LncRNA-0949 was effectively delivered into the HMO6 cells through the iPSC-Exos, which largely alleviated the production of malondialdehyde, IL-6, IL-1β and TNF-α in HMO6 cells. Overexpression of lncRNA-0949 could enhance the anti-inflammatory effect of the iPSC-Exos, and knock-down of lncRNA-0949 impaired this availability. CONCLUSION According to our results, lncRNA-0949 enriched exosomes from iPSC could potentially be used as a therapeutic strategy to prevent/treat neuroinflammatory diseases.
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Affiliation(s)
- Lixiu Ma
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Nanchang University, Nanchang, Jian, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Nanchang, Jiangxi Province, People's Republic of China
| | - Ce Xiao
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Nanchang University, Nanchang, Jian, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Nanchang, Jiangxi Province, People's Republic of China
| | - Zhizhe Zhang
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Nanchang University, Nanchang, Jian, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Nanchang, Jiangxi Province, People's Republic of China
| | - Yi-An Zhan
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital of Nanchang University, Nanchang, Jian, People's Republic of China
- Department of Respiratory and Critical Care Medicine, Nanchang, Jiangxi Province, People's Republic of China
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Zheng Z, Shang X, Sun K, Hou Y, Zhang X, Xu J, Liu H, Ruan Z, Hou L, Guo Z, Wang G, Xu F, Guo F. P21 resists ferroptosis in osteoarthritic chondrocytes by regulating GPX4 protein stability. Free Radic Biol Med 2024; 212:336-348. [PMID: 38176476 DOI: 10.1016/j.freeradbiomed.2023.12.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/27/2023] [Accepted: 12/30/2023] [Indexed: 01/06/2024]
Abstract
Ferroptosis is involved in the pathogenesis of osteoarthritis (OA) while suppression of chondrocyte ferroptosis has a beneficial effect on OA. However, the molecular mechanism of ferroptosis in OA remains to be elucidated. P21, an indicator of aging, has been reported to inhibit ferroptosis, but the relationship between P21 and ferroptosis in OA remains unclear. Here, we aimed to investigate the expression and function of P21 in OA chondrocytes, and the involvement of P21 in the regulation of ferroptosis in chondrocytes. First, we demonstrated that high P21 expression was observed in the cartilage from OA patients and destabilized medial meniscus (DMM) mice, and in osteoarthritic chondrocytes induced by IL-1β, FAC and erastin. P21 knockdown exacerbated the reduction of Col2a1 and promoted the upregulation of MMP13 in osteoarthritic chondrocytes. Meanwhile, P21 knockdown exacerbated cartilage degradation in DMM-induced OA mouse models and decreased GPX4 expression in vivo. Furthermore, P21 knockdown sensitized chondrocytes to ferroptosis induced by erastin, which was closely associated with the accumulation of lipid peroxides. In mechanism, we demonstrated that P21 regulated the stability of GPX4 protein, and the regulation was independent of NRF2. Meanwhile, we found that P21 significantly affected the recruitment of GPX4 to linear ubiquitin chain assembly complex (LUBAC) and regulated the level of M1-linked ubiquitination of GPX4. Overall, our results suggest that P21 plays an essential anti-ferroptosis role in OA by regulating the stability of GPX4.
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Affiliation(s)
- Zehang Zheng
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xingru Shang
- Department of Rehabilitation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Sun
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanjun Hou
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiong Zhang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingting Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haigang Liu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhaoxuan Ruan
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Liangcai Hou
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhou Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Genchun Wang
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Xu
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Fengjing Guo
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Wang K, Zhang X, Zhang M, Li X, Xie J, Liu S, Huang Q, Wang J, Guo Q, Wang H. Hyperoside Prevents Aβ42-Induced Neurotoxicity in PC12 Cells and Caenorhabditis elegans. Mol Neurobiol 2023; 60:7136-7150. [PMID: 37535309 DOI: 10.1007/s12035-023-03521-6] [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: 12/07/2022] [Accepted: 07/19/2023] [Indexed: 08/04/2023]
Abstract
Traditional Chinese medicines such as hyperoside-rich Acanthopanax senticosus and Crataegus pinnatifida have been confirmed to exhibit anti-oxidative stress properties. Hyperoside, the main ingredient of numerous antioxidant herbs, may have the ability to postpone the onset of neurodegenerative diseases. This study investigates the possible therapeutic mechanism of hyperoside as a natural antioxidant against Alzheimer's disease (AD) in Caenorhabditis elegans and PC12 cells. Specifically, hyperoside reduced reactive oxygen species (ROS) level and Aβ42-induced neurotoxicity in C. elegans worms. Meanwhile, hyperoside reduced ROS production and increased mitochondrial membrane potentialin Aβ42-induced PC12 cells, which possibly due to the increase of antioxidant enzymes activity and the diminution of malondialdehyde levels. Hoechst 33,342 staining and flow cytometry analysis results suggested that hyperoside reverses cell apoptosis. Network pharmacology predicts potentially relevant hyperoside targets and pathways in AD therapy. As anticipated, hyperoside reversed Aβ42-stimulated downregulation of the PI3K/Akt/Nrf2/HO-1. The PI3K inhibitor LY294002 partially abolished the protective capability of hyperoside. The results of molecular docking further indicated that the PI3K/Akt pathways may be involved in the protection of Aβ42-induced PC12 cells by hyperoside treatment. The study provides theoretical information for research and development of hyperoside as an antioxidant dietary supplement.
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Affiliation(s)
- Kexin Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China
| | - Xinyue Zhang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China
| | - Miaosi Zhang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China
| | - Xin Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China
| | - Jiao Xie
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guizhou, 550025, People's Republic of China
| | - Suwen Liu
- College of Food Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao, 066004, Hebei, China.
| | - Qun Huang
- Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guizhou, 550025, People's Republic of China.
| | - Jilite Wang
- Department of Agriculture, Hetao College, Inner Mongolia Bayannur, 015000, China.
| | - Qingbin Guo
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China.
| | - Hao Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, No. 29, 13Th Avenue, Economic and Technological Development Area (TEDA), Tianjin, 300457, People's Republic of China.
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Esteves F, Brito D, Rajado AT, Silva N, Apolónio J, Roberto VP, Araújo I, Nóbrega C, Castelo-Branco P, Bragança J. Reprogramming iPSCs to study age-related diseases: Models, therapeutics, and clinical trials. Mech Ageing Dev 2023; 214:111854. [PMID: 37579530 DOI: 10.1016/j.mad.2023.111854] [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: 06/09/2023] [Revised: 07/19/2023] [Accepted: 07/30/2023] [Indexed: 08/16/2023]
Abstract
The unprecedented rise in life expectancy observed in the last decades is leading to a global increase in the ageing population, and age-associated diseases became an increasing societal, economic, and medical burden. This has boosted major efforts in the scientific and medical research communities to develop and improve therapies to delay ageing and age-associated functional decline and diseases, and to expand health span. The establishment of induced pluripotent stem cells (iPSCs) by reprogramming human somatic cells has revolutionised the modelling and understanding of human diseases. iPSCs have a major advantage relative to other human pluripotent stem cells as their obtention does not require the destruction of embryos like embryonic stem cells do, and do not have a limited proliferation or differentiation potential as adult stem cells. Besides, iPSCs can be generated from somatic cells from healthy individuals or patients, which makes iPSC technology a promising approach to model and decipher the mechanisms underlying the ageing process and age-associated diseases, study drug effects, and develop new therapeutic approaches. This review discusses the advances made in the last decade using iPSC technology to study the most common age-associated diseases, including age-related macular degeneration (AMD), neurodegenerative and cardiovascular diseases, brain stroke, cancer, diabetes, and osteoarthritis.
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Affiliation(s)
- Filipa Esteves
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal
| | - David Brito
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal
| | - Ana Teresa Rajado
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal
| | - Nádia Silva
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal
| | - Joana Apolónio
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal
| | - Vânia Palma Roberto
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; ABC Collaborative Laboratory, Association for Integrated Aging and Rejuvenation Solutions (ABC CoLAB), 8100-735 Loulé, Portugal
| | - Inês Araújo
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; ABC Collaborative Laboratory, Association for Integrated Aging and Rejuvenation Solutions (ABC CoLAB), 8100-735 Loulé, Portugal; Faculty of Medicine and Biomedical Sciences (FMCB), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Champalimaud Research Program, Champalimaud Centre for the Unknown, Avenida Brasília, 1400-038 Lisbon, Portugal
| | - Clévio Nóbrega
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; ABC Collaborative Laboratory, Association for Integrated Aging and Rejuvenation Solutions (ABC CoLAB), 8100-735 Loulé, Portugal; Faculty of Medicine and Biomedical Sciences (FMCB), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Champalimaud Research Program, Champalimaud Centre for the Unknown, Avenida Brasília, 1400-038 Lisbon, Portugal
| | - Pedro Castelo-Branco
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; ABC Collaborative Laboratory, Association for Integrated Aging and Rejuvenation Solutions (ABC CoLAB), 8100-735 Loulé, Portugal; Faculty of Medicine and Biomedical Sciences (FMCB), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Champalimaud Research Program, Champalimaud Centre for the Unknown, Avenida Brasília, 1400-038 Lisbon, Portugal
| | - José Bragança
- Algarve Biomedical Center Research Institute (ABC-RI), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; ABC Collaborative Laboratory, Association for Integrated Aging and Rejuvenation Solutions (ABC CoLAB), 8100-735 Loulé, Portugal; Faculty of Medicine and Biomedical Sciences (FMCB), University of Algarve, Gambelas Campus, Bld. 2, 8005-139 Faro, Portugal; Champalimaud Research Program, Champalimaud Centre for the Unknown, Avenida Brasília, 1400-038 Lisbon, Portugal.
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Xiao X, Hu H, Zhong Y, Chen Y, Tang K, Pan Z, Huang J, Yang X, Wang Q, Gao Y. Microglia Sirt6 modulates the transcriptional activity of NRF2 to ameliorate high-fat diet-induced obesity. Mol Med 2023; 29:108. [PMID: 37582706 PMCID: PMC10428617 DOI: 10.1186/s10020-023-00676-9] [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: 01/31/2023] [Accepted: 05/31/2023] [Indexed: 08/17/2023] Open
Abstract
BACKGROUND Microglia play a pivotal role in neuroinflammation, while obesity triggers hypothalamic microglia activation and inflammation. Sirt6 is an important regulator of energy metabolism in many peripheral tissues and hypothalamic anorexic neurons. However, the exact mechanism for microglia Sirt6 in controlling high-fat diet-induced obesity remain unknown. METHODS Microglia Sirt6 expression levels under various nutritional conditions were measured in the hypothalamus of mice. Also, microglia Sirt6-deficient mice were provided various diets to monitor metabolic changes and hypothalamic inflammatory response. Besides, RNA-seq and Co-IP of microglia with Sirt6 alterations were conducted to further investigate the detailed mechanism by which Sirt6 modulated microglia activity. RESULTS We found that Sirt6 was downregulated in hypothalamic microglia in mice given a high-fat diet (HFD). Additionally, knockout of microglia Sirt6 exacerbated high-fat diet-induced hypothalamic microglial activation and inflammation. As a result, mice were more prone to obesity, exhibiting a decrease in energy expenditure, impaired glucose tolerance, insulin and leptin resistance, and increased food intake. In vitro, Sirt6 overexpression in BV2 cells displayed protective effects against oleic acid and palmitic acid treatment-derived inflammatory response. Mechanically, Sirt6 deacetylated and stabilised NRF2 to increase the expression of anti-oxidative genes and defend against reactive oxygen species overload. Pharmacological inhibition of NRF2 eliminated the beneficial modulating effects of Sirt6 on microglial activity. CONCLUSION Collectively, our results revealed that microglial Sirt6 was a primary contributor of microglial activation in the central regulation of obesity. Thus, microglial Sirt6 may be an important therapeutic target for obesity.
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Affiliation(s)
- Xiaoxia Xiao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Huiling Hu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510289, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510289, China
| | - Yadi Zhong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yingjian Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Kaijia Tang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zhisen Pan
- First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jiawen Huang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Xiaoying Yang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, 221004, Jiangsu, China.
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Yong Gao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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Nakano-Kobayashi A, Canela A, Yoshihara T, Hagiwara M. Astrocyte-targeting therapy rescues cognitive impairment caused by neuroinflammation via the Nrf2 pathway. Proc Natl Acad Sci U S A 2023; 120:e2303809120. [PMID: 37549281 PMCID: PMC10438385 DOI: 10.1073/pnas.2303809120] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 07/06/2023] [Indexed: 08/09/2023] Open
Abstract
Neuroinflammation is a common feature of neurodegenerative disorders such as Alzheimer's disease (AD). Neuroinflammation is induced by dysregulated glial activation, and astrocytes, the most abundant glial cells, become reactive upon neuroinflammatory cytokines released from microglia and actively contribute to neuronal loss. Therefore, blocking reactive astrocyte functions is a viable strategy to manage neurodegenerative disorders. However, factors or therapeutics directly regulating astrocyte subtypes remain unexplored. Here, we identified transcription factor NF-E2-related factor 2 (Nrf2) as a therapeutic target in neurotoxic reactive astrocytes upon neuroinflammation. We found that the absence of Nrf2 promoted the activation of reactive astrocytes in the brain tissue samples obtained from AD model 5xFAD mice, whereas enhanced Nrf2 expression blocked the induction of reactive astrocyte gene expression by counteracting NF-κB subunit p65 recruitment. Neuroinflammatory astrocytes robustly up-regulated genes associated with type I interferon and the antigen-presenting pathway, which were suppressed by Nrf2 pathway activation. Moreover, impaired cognitive behaviors observed in AD mice were rescued upon ALGERNON2 treatment, which potentiated the Nrf2 pathway and reduced the induction of neurotoxic reactive astrocytes. Thus, we highlight the potential of astrocyte-targeting therapy by promoting the Nrf2 pathway signaling for neuroinflammation-triggered neurodegeneration.
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Affiliation(s)
- Akiko Nakano-Kobayashi
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
- Department of Drug Discovery for Lung Diseases, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
| | - Andres Canela
- The Hakubi Center for Advanced Research and Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Kyoto606-8501, Japan
| | - Toru Yoshihara
- Institute of Laboratory Animals, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
| | - Masatoshi Hagiwara
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
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9
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Luffarelli R, Panarello L, Quatrana A, Tiano F, Fortuni S, Rufini A, Malisan F, Testi R, Condò I. Interferon Gamma Enhances Cytoprotective Pathways via Nrf2 and MnSOD Induction in Friedreich's Ataxia Cells. Int J Mol Sci 2023; 24:12687. [PMID: 37628866 PMCID: PMC10454386 DOI: 10.3390/ijms241612687] [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: 06/08/2023] [Revised: 07/27/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Friedreich's ataxia (FRDA) is a rare monogenic disease characterized by multisystem, slowly progressive degeneration. Because of the genetic defect in a non-coding region of FXN gene, FRDA cells exhibit severe deficit of frataxin protein levels. Hence, FRDA pathophysiology is characterized by a plethora of metabolic disruptions related to iron metabolism, mitochondrial homeostasis and oxidative stress. Importantly, an impairment of the antioxidant defences exacerbates the oxidative damage. This appears closely associated with the disablement of key antioxidant proteins, such as the transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) and the mitochondrial superoxide dismutase (MnSOD). The cytokine interferon gamma (IFN-γ) has been shown to increase frataxin expression in FRDA cells and to improve functional deficits in FRDA mice. Currently, IFN-γ represents a potential therapy under clinical evaluation in FRDA patients. Here, we show that IFN-γ induces a rapid expression of Nrf2 and MnSOD in different cell types, including FRDA patient-derived fibroblasts. Our data indicate that IFN-γ signals two separate pathways to enhance Nrf2 and MnSOD levels in FRDA fibroblasts. MnSOD expression increased through an early transcriptional regulation, whereas the levels of Nrf2 are induced by a post-transcriptional mechanism. We demonstrate that the treatment of FRDA fibroblasts with IFN-γ stimulates a non-canonical Nrf2 activation pathway through p21 and potentiates antioxidant responses under exposure to hydrogen peroxide. Moreover, IFN-γ significantly reduced the sensitivity to hydrogen peroxide-induced cell death in FRDA fibroblasts. Collectively, these results indicate the presence of multiple pathways triggered by IFN-γ with therapeutic relevance to FRDA.
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Affiliation(s)
- Riccardo Luffarelli
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Luca Panarello
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Andrea Quatrana
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Francesca Tiano
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Silvia Fortuni
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Alessandra Rufini
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
- Departmental Faculty of Medicine and Surgery, Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy
| | - Florence Malisan
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Roberto Testi
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
| | - Ivano Condò
- Department of Biomedicine and Prevention, University of Rome Tor Vergata, 00133 Rome, Italy; (R.L.); (L.P.); (A.Q.); (F.T.); (S.F.); (A.R.); (F.M.); (R.T.)
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10
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Asveda T, Priti T, Ravanan P. Exploring microglia and their phenomenal concatenation of stress responses in neurodegenerative disorders. Life Sci 2023:121920. [PMID: 37429415 DOI: 10.1016/j.lfs.2023.121920] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/12/2023]
Abstract
Neuronal cells are highly functioning but also extremely stress-sensitive cells. By defending the neuronal cells against pathogenic insults, microglial cells, a unique cell type, act as the frontline cavalry in the central nervous system (CNS). Their remarkable and unique ability to self-renew independently after their creation is crucial for maintaining normal brain function and neuroprotection. They have a wide range of molecular sensors that help maintain CNS homeostasis during development and adulthood. Despite being the protector of the CNS, studies have revealed that persistent microglial activation may be the root cause of innumerable neurodegenerative illnesses, including Alzheimer's disease (AD), Parkinson's disease (PD), and Amyloid Lateral Sclerosis (ALS). From our vigorous review, we state that there is a possible interlinking between pathways of Endoplasmic reticulum (ER) stress response, inflammation, and oxidative stress resulting in dysregulation of the microglial population, directly influencing the accumulation of pro-inflammatory cytokines, complement factors, free radicals, and nitric oxides leading to cell death via apoptosis. Recent research uses the suppression of these three pathways as a therapeutic approach to prevent neuronal death. Hence, in this review, we have spotlighted the advancement in microglial studies, which focus on their molecular defenses against multiple stresses, and current therapeutic strategies indirectly targeting glial cells for neurodevelopmental diseases.
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Affiliation(s)
- Thankavelu Asveda
- Functional Genomics Laboratory, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, Tamil Nadu, India
| | - Talwar Priti
- Apoptosis and Cell Survival Research Laboratory, 412G Pearl Research Park, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India.
| | - Palaniyandi Ravanan
- Functional Genomics Laboratory, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, Tamil Nadu, India.
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11
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Abstract
Significance: Central nervous system (CNS) diseases are disorders of the brain and/or spinal cord and include neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, and multiple sclerosis. Nuclear factor erythroid 2-related factor 2 (NRF2) is a transcription factor belonging to the cap-n-collar family that harbors a unique basic leucine zipper motif and plays as a master regulator of homeostatic responses. Recent Advances: Kelch-like ECH-associated protein 1 (KEAP1) is an adaptor of the Cullin3 (CUL3)-based ubiquitin E3 ligase that enhances the ubiquitylation of NRF2, which promotes the degradation of NRF2 to suppress its transcriptional activity in the absence of stress. Cysteine residues of KEAP1 are modified under stress conditions, and NRF2 degradation is attenuated, allowing it to accumulate and induce the expression of target genes. This regulatory system is referred to as the KEAP1-NRF2 system and plays a central role in protecting cells against various stresses. NRF2 also negatively regulates the expression of inflammatory cytokine and chemokine genes and suppresses pathological inflammation. As oxidative stress, inflammation, and proteostasis are known to contribute to neurodegenerative diseases, the KEAP1-NRF2 system is an attractive target for the treatment of these diseases. Critical Issues: In mouse models of neurodegenerative diseases, Nrf2 depletion exacerbates symptoms and enhances oxidative damage and inflammation in the CNS. In contrast, chemical or genetic NRF2 activation improves these symptoms. Indeed, the NRF2-activating chemical dimethyl fumarate is now widely used for the clinical treatment of MS. Future Directions: The KEAP1-NRF2 system is a promising therapeutic target for neurodegenerative diseases.
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Affiliation(s)
- Akira Uruno
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masayuki Yamamoto
- Department of Integrative Genomics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Department of Medical Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
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12
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Development of Novel Fluorinated Polyphenols as Selective Inhibitors of DYRK1A/B Kinase for Treatment of Neuroinflammatory Diseases including Parkinson’s Disease. Pharmaceuticals (Basel) 2023; 16:ph16030443. [PMID: 36986543 PMCID: PMC10058583 DOI: 10.3390/ph16030443] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023] Open
Abstract
Natural polyphenol derivatives such as those found in green tea have been known for a long time for their useful therapeutic activity. Starting from EGCG, we have discovered a new fluorinated polyphenol derivative (1c) characterized by improved inhibitory activity against DYRK1A/B enzymes and by considerably improved bioavailability and selectivity. DYRK1A is an enzyme that has been implicated as an important drug target in various therapeutic areas, including neurological disorders (Down syndrome and Alzheimer’s disease), oncology, and type 2 diabetes (pancreatic β-cell expansion). Systematic structure–activity relationship (SAR) on trans-GCG led to the discovery that the introduction of a fluoro atom in the D ring and methylation of the hydroxy group from para to the fluoro atom provide a molecule (1c) with more desirable drug-like properties. Owing to its good ADMET properties, compound 1c showed excellent activity in two in vivo models, namely the lipopolysaccharide (LPS)-induced inflammation model and the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) animal model for Parkinson’s disease.
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13
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Kano F, Hashimoto N, Liu Y, Xia L, Nishihara T, Oki W, Kawarabayashi K, Mizusawa N, Aota K, Sakai T, Azuma M, Hibi H, Iwasaki T, Iwamoto T, Horimai N, Yamamoto A. Therapeutic benefits of factors derived from stem cells from human exfoliated deciduous teeth for radiation-induced mouse xerostomia. Sci Rep 2023; 13:2706. [PMID: 36792628 PMCID: PMC9932159 DOI: 10.1038/s41598-023-29176-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 01/31/2023] [Indexed: 02/17/2023] Open
Abstract
Radiation therapy for head and neck cancers is frequently associated with adverse effects on the surrounding normal tissue. Irreversible damage to radiation-sensitive acinar cells in the salivary gland (SG) causes severe radiation-induced xerostomia (RIX). Currently, there are no effective drugs for treating RIX. We investigated the efficacy of treatment with conditioned medium derived from stem cells from human exfoliated deciduous teeth (SHED-CM) in a mouse RIX model. Intravenous administration of SHED-CM, but not fibroblast-CM (Fibro-CM), prevented radiation-induced cutaneous ulcer formation (p < 0.0001) and maintained SG function (p < 0.0001). SHED-CM treatment enhanced the expression of multiple antioxidant genes in mouse RIX and human acinar cells and strongly suppressed radiation-induced oxidative stress. The therapeutic effects of SHED-CM were abolished by the superoxide dismutase inhibitor diethyldithiocarbamate (p < 0.0001). Notably, quantitative liquid chromatography-tandem mass spectrometry shotgun proteomics of SHED-CM and Fibro-CM identified eight proteins activating the endogenous antioxidant system, which were more abundant in SHED-CM than in Fibro-CM (p < 0.0001). Neutralizing antibodies against those activators reduced antioxidant activity of SHED-CM (anti-PDGF-D; p = 0.0001, anti-HGF; p = 0.003). Our results suggest that SHED-CM may provide substantial therapeutic benefits for RIX primarily through the activation of multiple antioxidant enzyme genes in the target tissue.
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Affiliation(s)
- Fumiya Kano
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Noboru Hashimoto
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Yao Liu
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Linze Xia
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Takaaki Nishihara
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Wakana Oki
- grid.267335.60000 0001 1092 3579Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504 Japan
| | - Keita Kawarabayashi
- grid.267335.60000 0001 1092 3579Department of Pediatric Dentistry, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Noriko Mizusawa
- grid.267335.60000 0001 1092 3579Department of Oral Bioscience, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Keiko Aota
- grid.267335.60000 0001 1092 3579Department of Oral Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Takayoshi Sakai
- grid.136593.b0000 0004 0373 3971Department of Oral-Facial Disorders, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Masayuki Azuma
- grid.267335.60000 0001 1092 3579Department of Oral Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Hideharu Hibi
- grid.27476.300000 0001 0943 978XDepartment of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomonori Iwasaki
- grid.267335.60000 0001 1092 3579Department of Pediatric Dentistry, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Tsutomu Iwamoto
- grid.265073.50000 0001 1014 9130Department of Pediatric Dentistry/Special Needs Dentistry, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | | | - Akihito Yamamoto
- Department of Tissue Regeneration, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8504, Japan.
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14
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Sharifi HJ, Paine DN, Fazzari VA, Tipple AF, Patterson E, de Noronha CMC. Sulforaphane Reduces SAMHD1 Phosphorylation To Protect Macrophages from HIV-1 Infection. J Virol 2022; 96:e0118722. [PMID: 36377871 PMCID: PMC9749475 DOI: 10.1128/jvi.01187-22] [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: 07/29/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
The cellular protein SAMHD1 is important for DNA repair, suppressing LINE elements, controlling deoxynucleoside triphosphate (dNTP) concentrations, maintaining HIV-1 latency, and preventing excessive type I interferon responses. SAMHD1 is also a potent inhibitor of HIV-1 and other significant viral pathogens. Infection restriction is due in part to the deoxynucleoside triphosphatase (dNTPase) activity of SAMHD1 but is also mediated through a dNTPase-independent mechanism that has been described but not explored. The phosphorylation of SAMHD1 at threonine 592 (T592) controls many of its functions. Retroviral restriction, irrespective of dNTPase activity, is linked to unphosphorylated T592. Sulforaphane (SFN), an isothiocyanate, protects macrophages from HIV infection by mobilizing the transcription factor and antioxidant response regulator Nrf2. Here, we show that SFN and other clinically relevant Nrf2 mobilizers reduce SAMHD1 T592 phosphorylation to protect macrophages from HIV-1. We further show that SFN, through Nrf2, triggers the upregulation of the cell cycle control protein p21 in human monocyte-derived macrophages to contribute to SAMHD1 activation. We additionally present data that support another, potentially redox-dependent mechanism employed by SFN to contribute to SAMHD1 activation through reduced phosphorylation. This work establishes the use of exogenous Nrf2 mobilizers as a novel way to study virus restriction by SAMHD1 and highlights the Nrf2 pathway as a potential target for the therapeutic control of SAMHD1 cellular and antiviral functions. IMPORTANCE Here, we show, for the first time, that the treatment of macrophages with Nrf2 mobilizers, known activators of antioxidant responses, increases the fraction of SAMHD1 without a regulatory phosphate at position 592. We demonstrate that this decreases infection of macrophages by HIV-1. Phosphorylated SAMHD1 is important for DNA repair, the suppression of LINE elements, the maintenance of HIV-1 in a latent state, and the prevention of excessive type I interferon responses, while unphosphorylated SAMHD1 blocks HIV infection. SAMHD1 impacts many viruses and is involved in various cancers, so knowledge of how it works and how it is regulated has broad implications for the development of therapeutics. Redox-modulating therapeutics are already in clinical use or under investigation for the treatment of many conditions. Thus, understanding the impact of redox modifiers on controlling SAMHD1 phosphorylation is important for many areas of research in microbiology and beyond.
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Affiliation(s)
- H. John Sharifi
- Albany College of Pharmacy and Health Sciences, Albany, New York, USA
| | - Dakota N. Paine
- Albany College of Pharmacy and Health Sciences, Albany, New York, USA
| | | | | | - Emilee Patterson
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, New York, USA
| | - Carlos M. C. de Noronha
- Department of Immunology and Microbial Disease, Albany Medical College, Albany, New York, USA
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15
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Wächter K, Gohde B, Szabó G, Simm A. Rye Bread Crust as an Inducer of Antioxidant Genes and Suppressor of NF-κB Pathway In Vivo. Nutrients 2022; 14:nu14224790. [PMID: 36432475 PMCID: PMC9697834 DOI: 10.3390/nu14224790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/04/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Heat-processed food, like bread, containing high amounts of advanced glycation end products (AGEs), is controversially discussed regarding the effects on health and disease. In in vitro and in vivo experiments, AGEs can induce proinflammatory NF-κB and/or the anti-inflammatory NRF2 pathways. The aim of this study was to investigate how gene expression is influenced in vivo upon short as well as long-term feeding of mice with control and bread crust-food (BC). For that, the liver, kidney and heart from two days- and eight days-fed mice were isolated and gene arrays were performed. Fewer genes were affected in terms of expression after two days of BC feeding than after eight days. We observed, especially in the heart and to lesser extent in the liver, an induction of antioxidant response by BC. Among the significantly up-regulated genes identified in the heart were transcripts encoding for cardioprotective and antioxidative proteins like metallothionein 2, uncoupling protein 3 and pyruvate dehydrogenase kinase 4. In contrast, in the liver, genes encoding for inflammatory drivers like thioredoxin-interacting protein, lncRNA Mtss1 and ubiquitin-specific protease 2 were down-modulated. However, an increased expression of immunoglobulins was observed in the kidney. Furthermore, in vivo imaging analyses with NF-κB-luciferase-reporter mice uncovered a rather anti-inflammatory response, especially after three and seven days of the feeding study. Our results suggest that bread crust exerts antioxidant and anti-inflammatory effects in the model organism mouse in an organ-specific manner.
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Affiliation(s)
- Kristin Wächter
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University, Halle-Wittenberg, 06120 Halle (Saale), Germany
- Correspondence: ; Tel.: +49-345-557-7068
| | - Birte Gohde
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University, Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Gábor Szabó
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University, Halle-Wittenberg, 06120 Halle (Saale), Germany
| | - Andreas Simm
- Department for Cardiac Surgery, University Hospital Halle (Saale), Martin-Luther University, Halle-Wittenberg, 06120 Halle (Saale), Germany
- Center for Medical Basic Research, Martin-Luther-University Halle-Wittenberg, 06120 Halle (Saale), Germany
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16
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Terao R, Ahmed T, Suzumura A, Terasaki H. Oxidative Stress-Induced Cellular Senescence in Aging Retina and Age-Related Macular Degeneration. Antioxidants (Basel) 2022; 11:2189. [PMID: 36358561 PMCID: PMC9686487 DOI: 10.3390/antiox11112189] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 11/02/2022] [Accepted: 11/03/2022] [Indexed: 07/30/2023] Open
Abstract
Aging leads to a gradual decline of function in multiple organs. Cataract, glaucoma, diabetic retinopathy, and age-related macular degeneration (AMD) are age-related ocular diseases. Because their pathogenesis is unclear, it is challenging to combat age-related diseases. Cellular senescence is a cellular response characterized by cell cycle arrest. Cellular senescence is an important contributor to aging and age-related diseases through the alteration of cellular function and the secretion of senescence-associated secretory phenotypes. As a driver of stress-induced premature senescence, oxidative stress triggers cellular senescence and age-related diseases by inducing senescence markers via reactive oxygen species and mitochondrial dysfunction. In this review, we focused on the mechanism of oxidative stress-induced senescence in retinal cells and its role in the pathogenesis of AMD.
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Affiliation(s)
- Ryo Terao
- Department of Ophthalmology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
- Department of Ophthalmology & Visual Sciences, Washington University School of Medicine in St. Louis, St. Louis, MO 63110, USA
| | - Tazbir Ahmed
- Department of Ophthalmology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
| | - Ayana Suzumura
- Department of Ophthalmology, Graduate School of Medicine, Nagoya University, Nagoya 466-8550, Japan
| | - Hiroko Terasaki
- Institutes of Innovation for Future Society, Nagoya University, Nagoya 464-8601, Japan
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17
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Huang Q, Zhang C, Dong S, Han J, Qu S, Xie T, Zhao H, Shi Y. Asafoetida exerts neuroprotective effect on oxidative stress induced apoptosis through PI3K/Akt/GSK3β/Nrf2/HO-1 pathway. Chin Med 2022; 17:83. [PMID: 35794585 PMCID: PMC9258148 DOI: 10.1186/s13020-022-00630-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 06/02/2022] [Indexed: 11/23/2022] Open
Abstract
Background Alzheimer's Disease (AD) is a serious neurodegenerative disease and there is currently no effective treatment for AD progression. The use of TCM as a potential treatment strategy for AD is an evolving field of investigation. Asafoetida (ASF), an oleo-gum-resin isolated from Ferula assa-foetida root, has been proven to possess antioxidative potential and neuroprotective effects, which is closely associated with the neurological disorders. However, the efficacy and further mechanisms of ASF in AD experimental models are still unclear. Methods A cognitive impairment of mouse model induced by scopolamine was established to determine the neuroprotective effects of ASF in vivo, as shown by behavioral tests, biochemical assays, Nissl staining, TUNEL staining, Immunohistochemistry, western blot and qPCR. Furthermore, the PC12 cells stimulated by H2O2 were applied to explore the underlying mechanisms of ASF-mediated efficacy. Then, the UPLCM analysis and integrated network pharmacology approach was utilized to identified the main constitutes of ASF and the potential target of ASF against AD, respectively. And the main identified targets were validated in vitro by western blot, qPCR and immunofluorescence staining. Results In vivo, ASF treatment significantly ameliorated cognitive impairment induced by scopolamine, as evidenced by improving learning and memory abilities, and reducing neuronal injury, cholinergic system impairment, oxidative stress and apoptosis in the hippocampus of mice. In vitro, our results validated that ASF can dose-dependently attenuated H2O2-induced pathological oxidative stress in PC12 cells by inhibiting ROS and MDA production, as well as promoting the activities of SOD, CAT, GSH. We also found that ASF can significantly suppressed the apoptosis rate of PC12 cells increased by H2O2 exposure, which was confirmed by flow cytometry analysis. Moreover, treatment with ASF obviously attenuated H2O2-induced increase in caspase-3 and Bax expression levels, as well as decrease in Bcl-2 protein expression. KEGG enrichment analysis indicated that the PI3K/Akt/GSK3β/Nrf2 /HO-1pathway may be involved in the regulation of cognitive impairment by ASF. The results of western blot, qPCR and immunofluorescence staining of vitro assay proved it. Conclusions Collectively, our work first uncovered the significant neuroprotective effect of ASF in treating AD in vivo. Then, we processed a series of vitro experiments to clarify the biological mechanism action. These data demonstrate that ASF can inhibit oxidative stress induced neuronal apoptosis to foster the prevention of AD both in vivo and in vitro, and it may exert the function of inhibiting AD through PI3K/Akt/GSK3β/Nrf2/HO-1pathway. Supplementary Information The online version contains supplementary material available at 10.1186/s13020-022-00630-7.
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18
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Harmine prevents 3-nitropropionic acid-induced neurotoxicity in rats via enhancing NRF2-mediated signaling: Involvement of p21 and AMPK. Eur J Pharmacol 2022; 927:175046. [PMID: 35623405 DOI: 10.1016/j.ejphar.2022.175046] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/01/2022] [Accepted: 05/18/2022] [Indexed: 11/24/2022]
Abstract
Oxidative stress induced neurotoxicity is increasingly perceived as an important neuropathologic mechanism underlying the motor and behavioral phenotypes associated with Huntington's disease (HD). Repeated exposure to 3-nitropropionic acid (3-NP) induces neurotoxic changes which closely simulate the neuropathological and behavioral characteristics of HD. This study aimed at evaluating the prophylactic effects of the dual-specificity tyrosine phosphorylation regulated kinase 1A (DYRK1A) inhibitor "harmine" against 3-NP-indued neurotoxicity and HD-like symptoms. The potential prophylactic effect of harmine (10 mg/kg/day; intraperitoneal) was investigated on 3-NP-induced motor and cognitive HD-like deficits, nuclear factor erythroid 2 like 2 (NRF2), AMP kinase (AMPK) and p21 protein levels and the gene expression of haem oxygenase-1 (Ho-1), NAD(P)H: quinone oxidoreductase-1 (Nqo-1) and p62 in addition to redox imbalance and histological neurotoxic changes in the striatum, prefrontal cortex, and hippocampus of male Wistar rats. Harmine successfully increased the protein levels of NRF2, AMPK and p21 and the gene expression of Ho-1, Nqo-1 and p62, restored redox homeostasis, and reduced CASPASE-3 level. This was reflected in attenuation of 3-NP-induced neurodegenerative changes and improvement of rats' motor and cognitive performance. This study draws attention to the protective role of harmine against 3-NP-induced motor and cognitive dysfunction that could be mediated via enhancing NRF2-mediated signaling with subsequent amelioration of oxidative stress injury via NRF2 activators, p21 and AMPK, in the striatum, prefrontal cortex, and hippocampus which could offer a promising therapeutic tool to slow the progression of HD.
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Araldi GL, Hwang YW. Design, synthesis, and biological evaluation of polyphenol derivatives as DYRK1A inhibitors. The discovery of a potentially promising treatment for Multiple Sclerosis. Bioorg Med Chem Lett 2022; 64:128675. [PMID: 35292341 PMCID: PMC9067539 DOI: 10.1016/j.bmcl.2022.128675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 11/28/2022]
Abstract
Green tea and its natural components are known for their usefulness against a variety of diseases. In particular, the activity of main catechin Epigallocatechin gallate (EGCG) against Dual-specificity tyrosine-(Y)-phosphorylation Regulated Kinase-1A (DYRK1A) has been reported; here we are showing a structure-activity relationship (SAR) for EGCG against this molecular target. We have studied the influence of all four rings on the activity and the nature of its absolute geometry. This work has led to the identification of the more potent and stable trans fluoro-catechin derivative 1f (IC50 = 35 nM). This molecule together with a novel delivery method showed good efficacy in vivo when tested in a validated model of multiple sclerosis (EAE).
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Affiliation(s)
- Gian Luca Araldi
- Avanti Biosciences, Inc. 3210 Merryfield Row, San Diego, CA 92121, United States.
| | - Yu-Wen Hwang
- Department of Molecular Biology, New York State Institute for Basic Research in Developmental Disabilities, 1050 Forest Hill Road, Staten Island, NY 10314, United States
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20
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Tao S, Yang Y, Fan Y, Chu K, Sun J, Wu Q, Wang A, Wan J, Tian H. Melatonin protects against nonylphenol caused pancreatic β-cells damage through MDM2-P53-P21 axis. Toxicol Res (Camb) 2022; 11:391-401. [PMID: 35782637 PMCID: PMC9244227 DOI: 10.1093/toxres/tfac016] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 01/07/2022] [Accepted: 03/11/2021] [Indexed: 11/13/2022] Open
Abstract
Abstract
Nonylphenol (NP) is an endocrine disrupting chemical, which widely exists in environment and can result in multiple system dysfunction. Pancreas as one of the most important organs is sensitive to NP, while the detail toxic effect is still less studied. Previously, we unveiled nonylphenol causes pancreatic damage in rats, herein, we further explore the potential mechanism and seek protection strategy in vitro. Insulinoma (INS-1) cells exposed to NP were observed to suffer oxidative stress and mitochondrial dysfunction, as reflected by the abnormal levels of reactive oxygen species, malonic dialdehyde, superoxide dismutase, Ca2+, and mitochondrial membrane potential. Melatonin (MT) was found to alleviate NP-induced mitochondrial dysfunction and oxidative stress, further inhibit apoptosis and restore pancreas function. Mechanically, MT induced the MDM2-P53-P21 signaling, which upregulated the Nrf2 signaling pathway. In summary, our study clarified NP-induced INS-1 cells mitochondrial dysfunction and oxidative stress, which could be ameliorated by MT through MDM2-P53-P21 axis.
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Affiliation(s)
- Shasha Tao
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
- Department of Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Youjing Yang
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Yayun Fan
- Yancheng First People’s Hospital, Yancheng, P. R. China
| | - Kaimiao Chu
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Jiaojiao Sun
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Qianqian Wu
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Aiqing Wang
- Department of Experimental Center, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Jianmei Wan
- Department of Experimental Center, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
| | - Hailin Tian
- Department of Occupational and Environmental Health, School of Public Health, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
- Department of Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Medical College of Soochow University, 199 Ren'ai Road, Suzhou, Jiangsu 215123, China
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Huang R, Gao Y, Chen J, Duan Q, He P, Zhang J, Huang H, Zhang Q, Ma G, Zhang Y, Nie K, Wang L. TGR5 agonist INT-777 alleviates inflammatory neurodegeneration in parkinson’s disease mouse model by modulating mitochondrial dynamics in microglia. Neuroscience 2022; 490:100-119. [DOI: 10.1016/j.neuroscience.2022.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/16/2022] [Accepted: 02/25/2022] [Indexed: 11/24/2022]
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22
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He D, Hu G, Zhou A, Liu Y, Huang B, Su Y, Wang H, Ye B, He Y, Gao X, Fu S, Liu D. Echinocystic Acid Inhibits Inflammation and Exerts Neuroprotective Effects in MPTP-Induced Parkinson’s Disease Model Mice. Front Pharmacol 2022; 12:787771. [PMID: 35126128 PMCID: PMC8807489 DOI: 10.3389/fphar.2021.787771] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/29/2021] [Indexed: 01/05/2023] Open
Abstract
Parkinson’s disease (PD), the second primary neurodegenerative disease affecting human health, is mainly characterized by dopaminergic neuron damage in the midbrain and the clinical manifestation of movement disorders. Studies have shown that neuroinflammation plays an important role in the progression of PD. Excessively activated microglia produce several pro-inflammatory mediators, leading to damage to the surrounding neurons and finally inducing neurodegeneration. Echinocystic acid (EA) exhibits an anti-inflammatory effect in peripheral tissues. However, whether it inhibited neuroinflammation remains unclear. Therefore, the current study investigates the effect of EA on neuroinflammation and whether it can improve PD symptoms through inhibiting neuroinflammation. In our experiments, we discovered that EA inhibited the production of pro-inflammatory mediators in LPS-exposed BV2 cells. Further mechanism-related studies revealed that EA inhibited inflammation by activating PI3K/Akt and inhibiting NF-κB and MAPK signal pathways in LPS-induced BV2 cells. Research revealed that EA eases microglia-mediated neuron death in SN4741 and SHSY5Y cells. In in vivo studies, the results demonstrated that EA improves weight loss and behavioral impairment in MPTP-induced mice. Further studies have revealed that EA inhibited dopaminergic neuron damage and inflammation in the mice midbrain. In conclusion, our study demonstrated that EA inhibits neuroinflammation and exerts neuroprotective effects by activating PI3K/Akt and inhibiting NF-κB and MAPK signal pathways in vivo and in vitro.
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Affiliation(s)
- Dewei He
- College of Animal Science, Jilin University, Changchun, China
| | - Guiqiu Hu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ang Zhou
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yanting Liu
- Department of Neurosurgery, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Bingxu Huang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yingchun Su
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Hefei Wang
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Bojian Ye
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yuan He
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiyu Gao
- College of Animal Science, Jilin University, Changchun, China
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Dianfeng Liu
- College of Animal Science, Jilin University, Changchun, China
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23
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Hibbitts AJ, Kočí Z, Kneafsey S, Matsiko A, Žilić L, Dervan A, Hinton P, Chen G, Cavanagh B, Dowling J, McCoy C, Buckley CT, Archibald SJ, O'Brien FJ. Multi-Factorial Nerve Guidance Conduit Engineering Improves Outcomes in Inflammation, Angiogenesis and Large Defect Nerve Repair. Matrix Biol 2022; 106:34-57. [PMID: 35032612 DOI: 10.1016/j.matbio.2022.01.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 11/13/2021] [Accepted: 01/05/2022] [Indexed: 12/20/2022]
Abstract
Nerve guidance conduits (NGCs) are sub-optimal for long-distance injuries with inflammation and poor vascularization related to poor axonal repair. This study used a multi-factorial approach to create an optimized biomaterial NGC to address each of these issues. Through stepwise optimization, a collagen-chondroitin-6-sulphate (Coll-CS) biomaterial was functionalized with extracellular matrix (ECM) components; fibronectin, laminin 1 and laminin 2 (FibL1L2) in specific ratios. A snap-cooled freeze-drying process was then developed with optimal pore architecture and alignment to guide axonal bridging. Culture of adult rat dorsal root ganglia on NGCs demonstrated significant improvements in inflammation, neurogenesis and angiogenesis in the specific Fib:L1:L2 ratio of 1:4:1. In clinically relevant, large 15 mm rat sciatic nerve defects, FibL1L2-NGCs demonstrated significant improvements in axonal density and angiogenesis compared to unmodified NGCs with functional equivalence to autografts. Therefore, a multiparameter ECM-driven strategy can significantly improve axonal repair across large defects, without exogenous cells or growth factors.
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Affiliation(s)
- Alan J Hibbitts
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Zuzana Kočí
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Simone Kneafsey
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Amos Matsiko
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Leyla Žilić
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Adrian Dervan
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Paige Hinton
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | - Gang Chen
- Department of Physiology and Medical Physics, Centre for the Study of Neurological Disorders, Microsurgical Research and Training Facility (MRTF), RCSI, Dublin, Ireland
| | | | - Jennifer Dowling
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, D02 YN77 Dublin, Ireland
| | - Claire McCoy
- School of Pharmacy and Biomolecular Sciences, Royal College of Surgeons in Ireland, 123 St. Stephen's Green, D02 YN77 Dublin, Ireland
| | - Conor T Buckley
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
| | | | - Fergal J O'Brien
- Tissue Engineering Research Group, Dept. of Anatomy & Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin, Ireland; Trinity Centre for Biomedical Engineering, Trinity College Dublin, The University of Dublin, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), RCSI and TCD, Dublin, Ireland
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24
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Zhang Y, Wang D, Fu H, Zhao D, Zhang J, Li M, Wang C. Protective effects of extracellular proteins of Saccharomycopsis fibuligera on UVA-damaged human skin fibroblasts. J Funct Foods 2022. [DOI: 10.1016/j.jff.2021.104897] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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25
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Morris G, Walder K, Kloiber S, Amminger P, Berk M, Bortolasci CC, Maes M, Puri BK, Carvalho AF. The endocannabinoidome in neuropsychiatry: Opportunities and potential risks. Pharmacol Res 2021; 170:105729. [PMID: 34119623 DOI: 10.1016/j.phrs.2021.105729] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/31/2021] [Accepted: 06/09/2021] [Indexed: 02/08/2023]
Abstract
The endocannabinoid system (ECS) comprises two cognate endocannabinoid receptors referred to as CB1R and CB2R. ECS dysregulation is apparent in neurodegenerative/neuro-psychiatric disorders including but not limited to schizophrenia, major depressive disorder and potentially bipolar disorder. The aim of this paper is to review mechanisms whereby both receptors may interact with neuro-immune and neuro-oxidative pathways, which play a pathophysiological role in these disorders. CB1R is located in the presynaptic terminals of GABAergic, glutamatergic, cholinergic, noradrenergic and serotonergic neurons where it regulates the retrograde suppression of neurotransmission. CB1R plays a key role in long-term depression, and, to a lesser extent, long-term potentiation, thereby modulating synaptic transmission and mediating learning and memory. Optimal CB1R activity plays an essential neuroprotective role by providing a defense against the development of glutamate-mediated excitotoxicity, which is achieved, at least in part, by impeding AMPA-mediated increase in intracellular calcium overload and oxidative stress. Moreover, CB1R activity enables optimal neuron-glial communication and the function of the neurovascular unit. CB2R receptors are detected in peripheral immune cells and also in central nervous system regions including the striatum, basal ganglia, frontal cortex, hippocampus, amygdala as well as the ventral tegmental area. CB2R upregulation inhibits the presynaptic release of glutamate in several brain regions. CB2R activation also decreases neuroinflammation partly by mediating the transition from a predominantly neurotoxic "M1" microglial phenotype to a more neuroprotective "M2" phenotype. CB1R and CB2R are thus novel drug targets for the treatment of neuro-immune and neuro-oxidative disorders including schizophrenia and affective disorders.
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Affiliation(s)
- Gerwyn Morris
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Ken Walder
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Deakin University, Centre for Molecular and Medical Research, School of Medicine, Geelong, Australia
| | - Stefan Kloiber
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON, Canada; Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Paul Amminger
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Michael Berk
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Orygen, The National Centre of Excellence in Youth Mental Health, Centre for Youth Mental Health, Florey Institute for Neuroscience and Mental Health and the Department of Psychiatry, The University of Melbourne, Melbourne, Australia
| | - Chiara C Bortolasci
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia
| | - Michael Maes
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia; Department of Psychiatry, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand; Department of Psychiatry, Medical University of Plovdiv, Plovdiv, Bulgaria
| | | | - Andre F Carvalho
- Deakin University, IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, Australia.
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