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Wang Z, Xu J, Mo L, Zhan R, Zhang J, Liu L, Jiang J, Zhang Y, Bai Y. The Application Potential of the Regulation of Tregs Function by Irisin in the Prevention and Treatment of Immune-Related Diseases. Drug Des Devel Ther 2024; 18:3005-3023. [PMID: 39050796 PMCID: PMC11268596 DOI: 10.2147/dddt.s465713] [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] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Accepted: 06/25/2024] [Indexed: 07/27/2024] Open
Abstract
Irisin is a muscle factor induced by exercise, generated through the proteolytic cleavage of the membrane protein fibronectin type III domain-containing protein 5 (FNDC-5). Numerous studies have shown that irisin plays a significant role in regulating glucose and lipid metabolism, inhibiting oxidative stress, reducing systemic inflammatory responses, and providing neuroprotection. Additionally, irisin can exert immunomodulatory functions by regulating regulatory T cells (Tregs). Tregs are a highly differentiated subset of mature T cells that play a key role in maintaining self-immune homeostasis and are closely related to infections, inflammation, immune-related diseases, and tumors. Irisin exerts persistent positive effects on Treg cell functions through various mechanisms, including regulating Treg cell differentiation and proliferation, improving their function, modulating the balance of immune cells, increasing the production of anti-inflammatory cytokines, and enhancing metabolic functions, thereby helping to maintain immune homeostasis and prevent immune-related diseases. As an important myokine, irisin interacts with receptors on the cell membrane, activating multiple intracellular signaling pathways to regulate cell metabolism, proliferation, and function. Although the specific receptor for irisin has not been fully identified, integrins are considered potential receptors. Irisin activates various signaling pathways, including AMPK, MAPK, and PI3K/Akt, through integrin receptors, thereby exerting multiple biological effects. These research findings provide important clues for understanding the mechanisms of irisin's action and theoretical basis for its potential applications in metabolic diseases and immunomodulation. This article reviews the relationship between irisin and Tregs, as well as the research progress of irisin in immune-related diseases such as multiple sclerosis, myasthenia gravis, acquired immune deficiency syndrome, type 1 diabetes, sepsis, and rheumatoid arthritis. Studies have revealed that irisin plays an important role in immune regulation by improving the function of Tregs, suggesting its potential application value in the treatment of immune-related diseases.
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Affiliation(s)
- Zhengjiang Wang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Jiaqi Xu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Liqun Mo
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Renshu Zhan
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Jin Zhang
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Li Liu
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Jun Jiang
- Department of General Surgery (Thyroid Surgery), The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Yingying Zhang
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
| | - Yiping Bai
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
- Anesthesiology and Critical Care Medicine Key Laboratory of Luzhou, Southwest Medical University, Luzhou, Sichuan Province, 646000, People’s Republic of China
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Moldenhauer LM, Foyle KL, Wilson JJ, Wong YY, Sharkey DJ, Green ES, Barry SC, Hull ML, Robertson SA. A disrupted FOXP3 transcriptional signature underpins systemic regulatory T cell insufficiency in early pregnancy failure. iScience 2024; 27:108994. [PMID: 38327801 PMCID: PMC10847744 DOI: 10.1016/j.isci.2024.108994] [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: 07/12/2023] [Revised: 12/22/2023] [Accepted: 01/18/2024] [Indexed: 02/09/2024] Open
Abstract
Regulatory T (Treg) cell defects are implicated in disorders of embryo implantation and placental development, but the origins of Treg cell dysfunction are unknown. Here, we comprehensively analyzed the phenotypes and transcriptional profile of peripheral blood Treg cells in individuals with early pregnancy failure (EPF). Compared to fertile subjects, EPF subjects had 32% fewer total Treg cells and 54% fewer CD45RA+CCR7+ naive Treg cells among CD4+ T cells, an altered Treg cell phenotype with reduced transcription factor FOXP3 and suppressive marker CTLA4 expression, and lower Treg:Th1 and Treg:Th17 ratios. RNA sequencing demonstrated an aberrant gene expression profile, with upregulation of pro-inflammatory genes including CSF2, IL4, IL17A, IL21, and IFNG in EPF Treg cells. In silico analysis revealed 25% of the Treg cell dysregulated genes are targets of FOXP3. We conclude that EPF is associated with systemic Treg cell defects arising due to disrupted FOXP3 transcriptional control and loss of lineage fidelity.
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Affiliation(s)
- Lachlan M. Moldenhauer
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Kerrie L. Foyle
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Jasmine J. Wilson
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Ying Y. Wong
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - David J. Sharkey
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Ella S. Green
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - Simon C. Barry
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
| | - M. Louise Hull
- Robinson Research Institute and Adelaide Medical School, The University of Adelaide, Adelaide, SA, Australia
| | - Sarah A. Robertson
- Robinson Research Institute and School of Biomedicine, The University of Adelaide, Adelaide, SA, Australia
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Wang F, Gu X, Lin S, Wu Q, Sun Y, Zhang Q, Luo A, Feng X, Wang L, Xu L, Sun W, Tan W. Peptidase inhibitor 16 promotes inflammatory arthritis by suppressing Foxp3 expression via regulating K48-linked ubiquitin degradation Bmi-1 in regulatory T cells. Clin Immunol 2024; 259:109883. [PMID: 38147957 DOI: 10.1016/j.clim.2023.109883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/13/2023] [Accepted: 12/19/2023] [Indexed: 12/28/2023]
Abstract
Abnormalities of regulatory T cells (Tregs) has been suggested in rheumatoid arthritis (RA), and Forkhead box P3 (Foxp3) is the key transcriptional factor of Tregs expression. However, the underlying molecular mechanism remains unclear. Here, we demonstrated peptidase inhibitor 16 (PI16) was significantly increased in the peripheral blood, synovial fluid, and synovial tissue from RA patients. PI16 transgenic mice (PI16Tg) aggravated arthritis severity partly through suppressing Foxp3 expression. Mechanistically, PI16 could interact with and stabilize Bmi-1 in Tregs via inhibiting K48-linked polyubiquitin of Bmi-1, which promotes the enrichment of repressive histone mark in Foxp3 promoter. Furthermore, Bmi-1 specific inhibitor PTC209 could restore Foxp3 expression and alleviate arthritis progression in PI16Tg mice, accompanied by increased recruitment of active histone mark in the promoter of Tregs. Our results suggest that PI16-Bmi-1 axis plays an important role in RA and other autoimmune diseases by suppressing Foxp3 expression in Tregs via Bmi-1-mediated histone modification.
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Affiliation(s)
- Fang Wang
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xin Gu
- Department of Cardiology, the Affiliated Hospital of Jiangnan University, Wuxi 214125, China
| | - Shiyu Lin
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Qin Wu
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Yuankai Sun
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Qian Zhang
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Aishu Luo
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xiaoke Feng
- Department of Traditional Chinese Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China; Integrated Traditional Chinese and Western Medicine Institute of Nanjing Medical University, Nanjing 210029, China
| | - Lei Wang
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Lingxiao Xu
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Wei Sun
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Wenfeng Tan
- Department of Rheumatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
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Esparcia-Pinedo L, Lancho-Sánchez Á, Tsukalov I, Pacheco MI, Martínez-Fleta P, Pérez-Miés B, Palacios-Calvo J, Sánchez-Madrid F, Martín-Gayo E, Alfranca A. T regulatory lymphocytes specific for SARS-CoV-2 display increased functional plasticity. Clin Immunol 2023; 256:109806. [PMID: 37827267 DOI: 10.1016/j.clim.2023.109806] [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: 05/24/2023] [Revised: 09/22/2023] [Accepted: 10/07/2023] [Indexed: 10/14/2023]
Abstract
The study of phenotypic and functional characteristics of immune cells involved in host response to SARS-CoV-2 is relevant for understanding COVID-19 pathogenesis and individual differences in disease progression. We have analyzed chemokine receptor expression in SARS-CoV-2-specific CD4+ T lymphocytes from vaccinated donors, and have found an increase of CCR9+ and CCR6+ cells. CCR9+ specific CD4+ cells are enriched in T regulatory (Treg) lymphocytes. These cells specifically show heterogeneous regulatory activity, associated with different profiles of CCR9/CCR6 expression, individual differences in IL-10 and IL-17 production, and variable FoxP3 and Notch4 expression. A higher heterogeneity in FoxP3 is selectively observed in convalescent individuals within vaccinated population. Accordingly, SARS-CoV-2-specific CD4+ lymphocytes from COVID-19 patients are also enriched in CCR9+ and CCR6+ cells. CCR6+ specific Treg lymphocytes are mainly increased in critically ill individuals, indicating a preferential role for these cells in lung injury pathogenesis. We provide experimental evidence for a SARS-CoV-2-specific Treg population with increased plasticity, which may contribute to the differential pathogenic response against SARS-CoV-2 among individuals, and underlie the development of autoimmune conditions following SARS-CoV-2 infection.
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Affiliation(s)
- Laura Esparcia-Pinedo
- Immunology Department, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Ángel Lancho-Sánchez
- Immunology Department, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | | | - María I Pacheco
- Medical Oncology Department Hospital Universitario de La Princesa, and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Pedro Martínez-Fleta
- Immunology Department, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain
| | - Belén Pérez-Miés
- Pathology Department, Ramón y Cajal University Hospital, CIBERONC, IRYCIS and University of Alcalá, Madrid, Spain
| | - José Palacios-Calvo
- Pathology Department, Ramón y Cajal University Hospital, CIBERONC, IRYCIS and University of Alcalá, Madrid, Spain
| | - Francisco Sánchez-Madrid
- Immunology Department, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Cardiovascular, CIBERCV, 28029 Madrid, Spain
| | - Enrique Martín-Gayo
- Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Enfermedades Infecciosas, CIBERINFEC, 28029 Madrid, Spain
| | - Arantzazu Alfranca
- Immunology Department, Hospital Universitario de La Princesa and Instituto de Investigación Sanitaria Princesa, Madrid, Spain; Universidad Autónoma de Madrid, Madrid, Spain; Centro de Investigación Biomédica en Red Cardiovascular, CIBERCV, 28029 Madrid, Spain.
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Trammell CE, Rowe EH, Char AB, Jones BJ, Fawcett S, Ahlers LRH, Goodman AG. Insulin-mediated endothelin signaling is antiviral during West Nile virus infection. J Virol 2023; 97:e0111223. [PMID: 37796127 PMCID: PMC10617537 DOI: 10.1128/jvi.01112-23] [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: 07/24/2023] [Accepted: 08/20/2023] [Indexed: 10/06/2023] Open
Abstract
IMPORTANCE Arboviruses, particularly those transmitted by mosquitoes, pose a significant threat to humans and are an increasing concern because of climate change, human activity, and expanding vector-competent populations. West Nile virus is of significant concern as the most frequent mosquito-borne disease transmitted annually within the continental United States. Here, we identify a previously uncharacterized signaling pathway that impacts West Nile virus infection, namely endothelin signaling. Additionally, we demonstrate that we can successfully translate results obtained from D. melanogaster into the more relevant human system. Our results add to the growing field of insulin-mediated antiviral immunity and identify potential biomarkers or intervention targets to better address West Nile virus infection and severe disease.
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Affiliation(s)
- Chasity E. Trammell
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Evelyn H. Rowe
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Aditya B. Char
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Brianne J. Jones
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Stephen Fawcett
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Laura R. H. Ahlers
- RNA Viruses Section, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Alan G. Goodman
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
- Paul G. Allen School for Global Health, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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6
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Hillberg AK, Smith MK, Lausen BS, Suwansa-ard S, Johnston R, Mitu SA, MacDonald LE, Zhao M, Motti CA, Wang T, Elizur A, Nakashima K, Satoh N, Cummins SF. Crown-of-thorns starfish spines secrete defence proteins. PeerJ 2023; 11:e15689. [PMID: 37637177 PMCID: PMC10448888 DOI: 10.7717/peerj.15689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 06/14/2023] [Indexed: 08/29/2023] Open
Abstract
Background The crown-of-thorns starfish (COTS; Acanthaster species) is a slow-moving corallivore protected by an extensive array of long, sharp toxic spines. Envenomation can result in nausea, numbness, vomiting, joint aches and sometimes paralysis. Small molecule saponins and the plancitoxin proteins have been implicated in COTS toxicity. Methods Brine shrimp lethality assays were used to confirm the secretion of spine toxin biomolecules. Histological analysis, followed by spine-derived proteomics helped to explain the source and identity of proteins, while quantitative RNA-sequencing and phylogeny confirmed target gene expression and relative conservation, respectively. Results We demonstrate the lethality of COTS spine secreted biomolecules on brine shrimp, including significant toxicity using aboral spine semi-purifications of >10 kDa (p > 0.05, 9.82 µg/ml), supporting the presence of secreted proteins as toxins. Ultrastructure observations of the COTS aboral spine showed the presence of pores that could facilitate the distribution of secreted proteins. Subsequent purification and mass spectrometry analysis of spine-derived proteins identified numerous secretory proteins, including plancitoxins, as well as those with relatively high gene expression in spines, including phospholipase A2, protease inhibitor 16-like protein, ependymin-related proteins and those uncharacterized. Some secretory proteins (e.g., vitellogenin and deleted in malignant brain tumor protein 1) were not highly expressed in spine tissue, yet the spine may serve as a storage or release site. This study contributes to our understanding of the COTS through functional, ultrastructural and proteomic analysis of aboral spines.
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Affiliation(s)
- Adam K. Hillberg
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Meaghan K. Smith
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Blake S. Lausen
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Saowaros Suwansa-ard
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Ryan Johnston
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Shahida A. Mitu
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Leah E. MacDonald
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Min Zhao
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Cherie A. Motti
- Australian Institute of Marine Science, Townsville, Australia
| | - Tianfang Wang
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Abigail Elizur
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
| | - Keisuke Nakashima
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Noriyuki Satoh
- Marine Genomics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Scott F. Cummins
- Centre for Bioinnovation, University of the Sunshine Coast, Maroochydore, QLD, Australia
- School of Science, Technology and Engineering, University of the Sunshine Coast, Maroochydore, QLD, Australia
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7
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Wang L, Du A, Lu Y, Zhao Y, Qiu M, Su Z, Shu H, Shen H, Sun W, Kong X. Peptidase Inhibitor 16 Attenuates Left Ventricular Injury and Remodeling After Myocardial Infarction by Inhibiting the HDAC1-Wnt3a-β-Catenin Signaling Axis. J Am Heart Assoc 2023; 12:e028866. [PMID: 37158154 DOI: 10.1161/jaha.122.028866] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Background Myocardial infarction (MI) is a cardiovascular disease with high morbidity and mortality. PI16 (peptidase inhibitor 16), as a secreted protein, is highly expressed in heart diseases such as heart failure. However, the functional role of PI16 in MI is unknown. This study aimed to investigate the role of PI16 after MI and its underlying mechanisms. Methods and Results PI16 levels after MI were measured by enzyme-linked immunosorbent assay and immunofluorescence staining, which showed that PI16 was upregulated in the plasma of patients with acute MI and in the infarct zone of murine hearts. PI16 gain- and loss-of-function experiments were used to investigate the potential role of PI16 after MI. In vitro, PI16 overexpression inhibited oxygen-glucose deprivation-induced apoptosis in neonatal rat cardiomyocytes, whereas knockdown of PI16 exacerbated neonatal rat cardiomyocyte apoptosis. In vivo, left anterior descending coronary artery ligation was performed on PI16 transgenic mice, PI16 knockout mice, and their littermates. PI16 transgenic mice showed decreased cardiomyocyte apoptosis at 24 hours after MI and improved left ventricular remodeling at 28 days after MI. Conversely, PI16 knockout mice showed aggravated infract size and remodeling. Mechanistically, PI16 downregulated Wnt3a (wingless-type MMTV integration site family, member 3a)/β-catenin pathways, and the antiapoptotic role of PI16 was reversed by recombinant Wnt3a in oxygen-glucose deprivation-induced neonatal rat cardiomyocytes. PI16 also inhibited HDAC1 (class I histone deacetylase) expression, and overexpression HDAC1 abolished the inhibition of apoptosis and Wnt signaling of PI16. Conclusions In summary, PI16 protects against cardiomyocyte apoptosis and left ventricular remodeling after MI through the HDAC1-Wnt3a-β-catenin axis.
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Affiliation(s)
- Luyang Wang
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Anning Du
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Yan Lu
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Yunxi Zhao
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Ming Qiu
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
- School of Medicine Southeast University Nanjing Jiangsu China
| | - Zhenyang Su
- School of Medicine Southeast University Nanjing Jiangsu China
| | - Huanyu Shu
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Hui Shen
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Wei Sun
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
| | - Xiangqing Kong
- Department of Cardiology The First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu China
- Cardiovascular Research Center The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Gusu School, Nanjing Medical University Suzhou China
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8
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Ryan FJ, Hope CM, Masavuli MG, Lynn MA, Mekonnen ZA, Yeow AEL, Garcia-Valtanen P, Al-Delfi Z, Gummow J, Ferguson C, O'Connor S, Reddi BAJ, Hissaria P, Shaw D, Kok-Lim C, Gleadle JM, Beard MR, Barry SC, Grubor-Bauk B, Lynn DJ. Long-term perturbation of the peripheral immune system months after SARS-CoV-2 infection. BMC Med 2022; 20:26. [PMID: 35027067 PMCID: PMC8758383 DOI: 10.1186/s12916-021-02228-6] [Citation(s) in RCA: 141] [Impact Index Per Article: 70.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 12/29/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a highly infectious respiratory virus which is responsible for the coronavirus disease 2019 (COVID-19) pandemic. It is increasingly clear that recovered individuals, even those who had mild COVID-19, can suffer from persistent symptoms for many months after infection, a condition referred to as "long COVID", post-acute sequelae of COVID-19 (PASC), post-acute COVID-19 syndrome, or post COVID-19 condition. However, despite the plethora of research on COVID-19, relatively little is known about the molecular underpinnings of these long-term effects. METHODS We have undertaken an integrated analysis of immune responses in blood at a transcriptional, cellular, and serological level at 12, 16, and 24 weeks post-infection (wpi) in 69 patients recovering from mild, moderate, severe, or critical COVID-19 in comparison to healthy uninfected controls. Twenty-one of these patients were referred to a long COVID clinic and > 50% reported ongoing symptoms more than 6 months post-infection. RESULTS Anti-Spike and anti-RBD IgG responses were largely stable up to 24 wpi and correlated with disease severity. Deep immunophenotyping revealed significant differences in multiple innate (NK cells, LD neutrophils, CXCR3+ monocytes) and adaptive immune populations (T helper, T follicular helper, and regulatory T cells) in convalescent individuals compared to healthy controls, which were most strongly evident at 12 and 16 wpi. RNA sequencing revealed significant perturbations to gene expression in COVID-19 convalescents until at least 6 months post-infection. We also uncovered significant differences in the transcriptome at 24 wpi of convalescents who were referred to a long COVID clinic compared to those who were not. CONCLUSIONS Variation in the rate of recovery from infection at a cellular and transcriptional level may explain the persistence of symptoms associated with long COVID in some individuals.
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Affiliation(s)
- Feargal J Ryan
- Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, 5001, Australia
| | - Christopher M Hope
- Women's and Children's Health Network, North Adelaide, SA, Australia.,Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Makutiro G Masavuli
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia
| | - Miriam A Lynn
- Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, 5001, Australia
| | - Zelalem A Mekonnen
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia
| | - Arthur Eng Lip Yeow
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia
| | - Pablo Garcia-Valtanen
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia
| | - Zahraa Al-Delfi
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia
| | - Jason Gummow
- Gene Silencing and Expression Core Facility, Adelaide Health and Medical Sciences, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Catherine Ferguson
- Infectious Diseases Department, Royal Adelaide Hospital, Central Adelaide Local Health Network, Adelaide, SA, Australia
| | - Stephanie O'Connor
- Intensive Care Unit, Royal Adelaide Hospital, Central Adelaide Local Health Network and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Benjamin A J Reddi
- Intensive Care Unit, Royal Adelaide Hospital, Central Adelaide Local Health Network and Adelaide Medical School, University of Adelaide, Adelaide, SA, Australia
| | - Pravin Hissaria
- Infectious Diseases Department, Royal Adelaide Hospital, Central Adelaide Local Health Network, Adelaide, SA, Australia
| | - David Shaw
- Infectious Diseases Department, Royal Adelaide Hospital, Central Adelaide Local Health Network, Adelaide, SA, Australia
| | - Chuan Kok-Lim
- Infectious Diseases Department, Royal Adelaide Hospital, Central Adelaide Local Health Network, Adelaide, SA, Australia.,Microbiology and Infectious Diseases Department, SA Pathology, Adelaide, SA, Australia
| | - Jonathan M Gleadle
- Department of Renal Medicine, Flinders Medical Centre, Flinders University, Bedford Park, SA, 5042, Australia.,Flinders Health and Medical Research Institute, Flinders University, Bedford Park, SA, 5042, Australia
| | - Michael R Beard
- Research Centre for Infectious Diseases, School of Biological Sciences, University of Adelaide, Adelaide, SA, 5005, Australia
| | - Simon C Barry
- Women's and Children's Health Network, North Adelaide, SA, Australia. .,Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.
| | - Branka Grubor-Bauk
- Viral Immunology Group, Adelaide Medical School, University of Adelaide and Basil Hetzel Institute for Translational Health Research, Adelaide, SA, Australia.
| | - David J Lynn
- Precision Medicine Theme, South Australian Health and Medical Research Institute, Adelaide, SA, 5001, Australia. .,Flinders Health and Medical Research Institute, Flinders University, Bedford Park, SA, 5042, Australia.
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9
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Ben-Skowronek I, Sieniawska J, Pach E, Wrobel W, Skowronek A, Tomczyk Z, Rosolowska I. Potential Therapeutic Application of Regulatory T Cells in Diabetes Mellitus Type 1. Int J Mol Sci 2021; 23:ijms23010390. [PMID: 35008819 PMCID: PMC8745590 DOI: 10.3390/ijms23010390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/18/2021] [Accepted: 12/28/2021] [Indexed: 01/02/2023] Open
Abstract
The autoimmune reaction against the beta cells of the pancreatic islets in type 1 diabetes mellitus (T1DM) patients is active in prediabetes and during the development of the clinical manifestation of T1DM, but it decreases within a few years of the clinical manifestation of this disease. A key role in the pathogenesis of T1DM is played by regulatory T cell (Treg) deficiency or dysfunction. Immune interventions, such as potential therapeutic applications or the induction of the Treg-cell population in T1DM, will be important in the development of new types of treatment. The aim of this study was to evaluate innovative immune interventions as treatments for T1DM. After an evaluation of full-length papers from the PubMed database from 2010 to 2021, 20 trials were included for the final analysis. The analysis led to the following conclusions: Treg cells play an important role in the limitation of the development of T1DM, the activation or application of Tregs may be more effective in the early stages of T1DM development, and the therapeutic use of Treg cells in T1DM is promising but requires long-term observation in a large group of patients.
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10
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Brown CY, Sadlon T, Hope CM, Wong YY, Wong S, Liu N, Withers H, Brown K, Bandara V, Gundsambuu B, Pederson S, Breen J, Robertson SA, Forrest A, Beyer M, Barry SC. Molecular Insights Into Regulatory T-Cell Adaptation to Self, Environment, and Host Tissues: Plasticity or Loss of Function in Autoimmune Disease. Front Immunol 2020; 11:1269. [PMID: 33072063 PMCID: PMC7533603 DOI: 10.3389/fimmu.2020.01269] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 05/19/2020] [Indexed: 12/19/2022] Open
Abstract
There has been much interest in the ability of regulatory T cells (Treg) to switch function in vivo, either as a result of genetic risk of disease or in response to environmental and metabolic cues. The relationship between levels of FOXP3 and functional fitness plays a significant part in this plasticity. There is an emerging role for Treg in tissue repair that may be less dependent on FOXP3, and the molecular mechanisms underpinning this are not fully understood. As a result of detailed, high-resolution functional genomics, the gene regulatory networks and key functional mediators of Treg phenotype downstream of FOXP3 have been mapped, enabling a mechanistic insight into Treg function. This transcription factor-driven programming of T-cell function to generate Treg requires the switching on and off of key genes that form part of the Treg gene regulatory network and raises the possibility that this is reversible. It is plausible that subtle shifts in expression levels of specific genes, including transcription factors and non-coding RNAs, change the regulation of the Treg gene network. The subtle skewing of gene expression initiates changes in function, with the potential to promote chronic disease and/or to license appropriate inflammatory responses. In the case of autoimmunity, there is an underlying genetic risk, and the interplay of genetic and environmental cues is complex and impacts gene regulation networks frequently involving promoters and enhancers, the regulatory elements that control gene expression levels and responsiveness. These promoter–enhancer interactions can operate over long distances and are highly cell type specific. In autoimmunity, the genetic risk can result in changes in these enhancer/promoter interactions, and this mainly impacts genes which are expressed in T cells and hence impacts Treg/conventional T-cell (Tconv) function. Genetic risk may cause the subtle alterations to the responsiveness of gene regulatory networks which are controlled by or control FOXP3 and its target genes, and the application of assays of the 3D organization of chromatin, enabling the connection of non-coding regulatory regions to the genes they control, is revealing the direct impact of environmental/metabolic/genetic risk on T-cell function and is providing mechanistic insight into susceptibility to inflammatory and autoimmune conditions.
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Affiliation(s)
- Cheryl Y Brown
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Timothy Sadlon
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Women's and Children's Health Network, North Adelaide, SA, Australia
| | | | - Ying Y Wong
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Soon Wong
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Ning Liu
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - Holly Withers
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Katherine Brown
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Veronika Bandara
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Batjargal Gundsambuu
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Stephen Pederson
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - James Breen
- Bioinformatics Hub, University of Adelaide, Adelaide, SA, Australia
| | - Sarah Anne Robertson
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Alistair Forrest
- QEII Medical Centre and Centre for Medical Research, Harry Perkins Institute of Medical Research, Murdoch, WA, Australia
| | - Marc Beyer
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Simon Charles Barry
- Molecular Immunology, Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia.,Women's and Children's Health Network, North Adelaide, SA, Australia
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11
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Ahmed A, Vyakarnam A. Emerging patterns of regulatory T cell function in tuberculosis. Clin Exp Immunol 2020; 202:273-287. [PMID: 32639588 PMCID: PMC7670141 DOI: 10.1111/cei.13488] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/12/2020] [Accepted: 06/22/2020] [Indexed: 12/22/2022] Open
Abstract
Tuberculosis (TB) is one of the top 10 causes of mortality worldwide from a single infectious agent and has significant implications for global health. A major hurdle in the development of effective TB vaccines and therapies is the absence of defined immune‐correlates of protection. In this context, the role of regulatory T cells (Treg), which are essential for maintaining immune homeostasis, is even less understood. This review aims to address this knowledge gap by providing an overview of the emerging patterns of Treg function in TB. Increasing evidence from studies, both in animal models of infection and TB patients, points to the fact the role of Tregs in TB is dependent on disease stage. While Tregs might expand and delay the appearance of protective responses in the early stages of infection, their role in the chronic phase perhaps is to counter‐regulate excessive inflammation. New data highlight that this important homeostatic role of Tregs in the chronic phase of TB may be compromised by the expansion of activated human leucocyte antigen D‐related (HLA‐DR)+CD4+ suppression‐resistant effector T cells. This review provides a comprehensive and critical analysis of the key features of Treg cells in TB; highlights the importance of a balanced immune response as being important in TB and discusses the importance of probing not just Treg frequency but also qualitative aspects of Treg function as part of a comprehensive search for novel TB treatments.
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Affiliation(s)
- A Ahmed
- Laboratory of Immunology of HIV-TB Co-infection, Center for Infectious Disease Research (CIDR), Indian Institute of Science (IISc), Bangalore, India
| | - A Vyakarnam
- Laboratory of Immunology of HIV-TB Co-infection, Center for Infectious Disease Research (CIDR), Indian Institute of Science (IISc), Bangalore, India.,Peter Gorer Department of Immunobiology, School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, Guy's Hospital, King's College London (KCL), London, UK
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12
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Miran I, Scherer D, Ostyn P, Mazouni C, Drusch F, Bernard M, Louvet E, Adam J, Mathieu MC, Haffa M, Antignac JP, Le Bizec B, Vielh P, Dessen P, Perdry H, Delaloge S, Feunteun J. Adipose Tissue Properties in Tumor-Bearing Breasts. Front Oncol 2020; 10:1506. [PMID: 32974182 PMCID: PMC7472783 DOI: 10.3389/fonc.2020.01506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 07/14/2020] [Indexed: 12/11/2022] Open
Abstract
The tissue stroma plays a major role in tumors' natural history. Most programs for tumor progression are not activated as cell-autonomous processes but under the conditions of cross-talks between tumor and stroma. Adipose tissue is a major component of breast stroma. This study compares adipose tissues in tumor-bearing breasts to those in tumor-free breasts with the intention of defining a signature that could translate into markers of cancer risk. In tumor-bearing breasts, we sampled adipose tissues adjacent to, or distant from the tumor. Parameters studied included: adipocytes size and density, immune cell infiltration, vascularization, secretome and gene expression. Adipose tissues from tumor-bearing breasts, whether adjacent to or distant from the tumor, do not differ from each other by any of these parameters. By contrast, adipose tissues from tumor-bearing breasts have the capacity to secrete twice as much interleukin 8 (IL-8) than those from tumor-free breasts and differentially express a set of 137 genes of which a significant fraction belongs to inflammation, integrin and wnt signaling pathways. These observations show that adipose tissues from tumor-bearing breasts have a distinct physiological status from those from tumor-free breasts. We propose that this constitutive status contributes as a non-cell autonomous process to determine permissiveness for tumor growth.
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Affiliation(s)
- Isabelle Miran
- Translational Research Lab, INSERM U981, Université Paris-Saclay, Villejuif, France
| | - Dominique Scherer
- Division of Preventive Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Pauline Ostyn
- UMR 9019 Genome Integrity and Cancers, Université Paris-Saclay, Villejuif, France
| | - Chafika Mazouni
- Breast Cancer Group, Université Paris-Saclay, Villejuif, France
| | - Françoise Drusch
- Biology and Pathology Department, Université Paris-Saclay, Villejuif, France
| | - Marine Bernard
- Biology and Pathology Department, Université Paris-Saclay, Villejuif, France
| | - Emilie Louvet
- Biology and Pathology Department, Université Paris-Saclay, Villejuif, France
| | - Julien Adam
- Biology and Pathology Department, Université Paris-Saclay, Villejuif, France
| | - Marie-Christine Mathieu
- Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), UMR 1329 Oniris-INRA, Nantes, France
| | - Mariam Haffa
- Division of Preventive Oncology, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany.,Translational Functional Cancer Genomics, National Center for Tumor Diseases (NCT) and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jean-Philippe Antignac
- Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), UMR 1329 Oniris-INRA, Nantes, France
| | - Bruno Le Bizec
- Laboratoire d'Etude des Résidus et Contaminants dans les Aliments (LABERCA), UMR 1329 Oniris-INRA, Nantes, France
| | - Philippe Vielh
- Biology and Pathology Department, Université Paris-Saclay, Villejuif, France
| | - Philippe Dessen
- Bioinformatics Core Facility, Université Paris-Saclay, Villejuif, France
| | - Hervé Perdry
- INSERM U669 - Equipe GGS Génomique & Génétique Statistique, Villejuif, France
| | | | - Jean Feunteun
- UMR 9019 Genome Integrity and Cancers, Université Paris-Saclay, Villejuif, France
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13
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Wang X, Liu G, Sheng N, Zhang M, Pan X, Liu S, Huang K, Cong Y, Xu Q, Jia X, Xu J. Peptidome characterization of ovarian cancer serum and the identification of tumor suppressive peptide ZYX 36-58. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:925. [PMID: 32953725 PMCID: PMC7475411 DOI: 10.21037/atm-20-2018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Several serum biomarkers, including miRNA, mRNA, protein and peptides in cancer patients are also important mediators of cancer progression. Methods The differentially expressed peptides between the serum of ovarian cancer patients and healthy controls were analyzed by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The function of the peptides was analyzed by CCK8, transwell, wound healing, and flow cytometry analysis. And the mechanism of the peptides was analyzed by peptide pull down, and high-throughput RNA-sequencing. Results A total of 7 and 46 peptides were significantly up-regulated and down-regulated in the serum of ovarian cancer patients, respectively. The precursor proteins of the differentially expressed peptides mainly involved in the complement and coagulation cascades, platelet activation, phagosome and focal adhesion pathways. Interestingly, focal adhesion, platelet activation, platelet-cancer cell interaction, complement activation, coagulation cascades and phagosome formation are all critical factors for cancer initiation or progression, which indicated that the peptides may play a crucial role in cancer development. And we identified one peptide, ZYX36-58, which was down-regulated in the serum of ovarian cancer patients, significantly inhibited invasion and migration and promoted the apoptosis of ovarian cancer cells. Mechanistic study indicated that ZYX36-58 interacted with and increased the protein level of the antiangiogenic protein thrombospondin-1 (TSP1), which has a tumor suppressive effect on ovarian cancer. Conclusions ZYX36-58, which was significantly down-regulated in the serum of ovarian cancer patients can significantly inhibit cell invasion, migration and promote apoptosis of ovarian cancer cells by binding and up-regulating TSP1 protein expression.
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Affiliation(s)
- Xusu Wang
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Guangquan Liu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Na Sheng
- Model Animal Research Center of Nanjing University, Nanjing, China
| | - Mi Zhang
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Xinxing Pan
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Siyu Liu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Ke Huang
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Yu Cong
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Qing Xu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Xuemei Jia
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
| | - Juan Xu
- Department of Gynecology, Women's Hospital of Nanjing Medical University (Nanjing Maternity and Child Health Care Hospital), Nanjing, China
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14
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Mascarenhas DD. Transcriptional re-programming in rat central nervous system two weeks after burn trauma: the impact of nephrilin treatment on the expression of oxidative stress-related genes. Scars Burn Heal 2020; 6:2059513120939443. [PMID: 32850134 PMCID: PMC7425318 DOI: 10.1177/2059513120939443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
INTRODUCTION Survivors of severe burns suffer lifetime neuroinflammatory consequences manifested by higher incidence of major depression and neurodegenerative disease. In a scald model, nephrilin peptide has previously been shown to protect rats from loss of lean body mass, kidney function and glycaemic control, complications that have also been shown to endure in burn patient populations. Nephrilin's mechanism of action has been suggested to involve protection from excessive oxidative stress. METHODS Using quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) amplification of transcripts in total RNA extracted from dorsal root ganglia of male rats 14 days after exposure to thermal insult, we query the relative levels of expression of 34 genes believed to be associated with oxidative stress biology in the central nervous system (CNS). We use these data to explore the central role of oxidative stress in astrogliosis, immunosuppression and mitochondrial homeostasis. RESULTS AND DISCUSSION Rats that received nephrilin treatment (4 mg/kg by subcutaneous bolus injection once daily for seven days after scald injury) showed significantly reduced elevations in gene expression of some key genes such as NOX2, GFAP, AQP4 and RAC1, but not of others such as NOX4, STEAP4, ARG1 and CCL2. CONCLUSION The implications of these data with reference to nephrilin's potential clinical utility for mitigating the enduring effects of burn trauma on the CNS are discussed. Nephrilin reduces the expression of some genes implicated in neurodegeneration after burn insult. LAY SUMMARY Nephrilin peptide is a novel treatment for short- and long-term systemic effects of burn trauma. This study measures the capability of nephrilin to address post-traumatic neurodegenerative disease by looking at the expression of genes in the central nervous system, in a rat scald model. Nephrilin appears to have beneficial effects by reducing the expression of some key genes known to be relevant in neurodegenerative processes, but not others.
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Affiliation(s)
- Desmond D Mascarenhas
- Mayflower Organization for Research & Education, Sunnyvale, CA, USA
- Transporin, Inc., Sunnyvale, CA, USA
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