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Mitsuyama Y, Matsumoto H, Togami Y, Oda S, Onishi S, Yoshimura J, Murtatsu A, Ito H, Ogura H, Okuzaki D, Oda J. T cell dysfunction in elderly ARDS patients based on miRNA and mRNA integration analysis. Front Immunol 2024; 15:1368446. [PMID: 38571958 PMCID: PMC10987699 DOI: 10.3389/fimmu.2024.1368446] [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: 01/10/2024] [Accepted: 03/07/2024] [Indexed: 04/05/2024] Open
Abstract
Background Acute respiratory distress syndrome (ARDS) is respiratory failure that commonly occurs in critically ill patients, and the molecular mechanisms underlying its pathogenesis and severity are poorly understood. We evaluated mRNA and miRNA in patients with ARDS and elucidated the pathogenesis of ARDS after performing mRNA and miRNA integration analysis. Methods In this single-center, prospective, observational clinical study of patients with ARDS, peripheral blood of each patient was collected within 24 hours of admission. Sequencing of mRNA and miRNA was performed using whole blood from the ARDS patients and healthy donors. Results Thirty-four ARDS patients were compared with 15 healthy donors. Compared with the healthy donors, 1233 mRNAs and 6 miRNAs were upregulated and 1580 mRNAs and 13 miRNAs were downregulated in the ARDS patients. For both mRNA and miRNA-targeted mRNA, canonical pathway analysis showed that programmed death-1 (PD-1) and programmed cell death ligand 1 (PD-L1) cancer immunotherapy pathway was most activated and the Th2 pathway was most suppressed. For mRNA, the Th1 pathway was most suppressed. miR-149-3p and several miRNAs were identified as upstream regulators. Conclusion miRNAs regulated the PD-1 and PD-L1 cancer immunotherapy pathway and Th2 pathway through miRNA interference action of mRNA. Integrated analysis of mRNAs and miRNAs showed that T cells were dysfunctional in ARDS patients.
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Affiliation(s)
- Yumi Mitsuyama
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hisatake Matsumoto
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuki Togami
- Department of Acute Medicine and Critical Care Medical Center, Osaka National Hospital, National Hospital Organization, Osaka, Japan
| | - Sayaka Oda
- Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Shinya Onishi
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Jumpei Yoshimura
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Arisa Murtatsu
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Ito
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Hiroshi Ogura
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Daisuke Okuzaki
- Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
| | - Jun Oda
- Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
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Reitsema RD, Kumawat AK, Hesselink BC, van Baarle D, van Sleen Y. Effects of ageing and frailty on circulating monocyte and dendritic cell subsets. NPJ AGING 2024; 10:17. [PMID: 38438383 PMCID: PMC10912203 DOI: 10.1038/s41514-024-00144-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 02/14/2024] [Indexed: 03/06/2024]
Abstract
Ageing is associated with dysregulated immune responses, resulting in impaired resilience against infections and low-grade inflammation known as inflammageing. Frailty is a measurable condition in older adults characterized by decreased health and physical impairment. Dendritic cells (DCs) and monocytes play a crucial role in initiating and steering immune responses. To assess whether their frequencies and phenotypes in the blood are affected by ageing or frailty, we performed a flow cytometry study on monocyte and DC subsets in an immune ageing cohort. We included (n = 15 in each group) healthy young controls (HYC, median age 29 years), healthy older controls (HOC, 73 years) and Frail older controls (76 years). Monocyte subsets (classical, intermediate, non-classical) were identified by CD14 and CD16 expression, and DC subsets (conventional (c)DC1, cDC2, plasmacytoid (p)DC) by CD11c, CD1c, CD141 and CD303 expression. All subsets were checked for TLR2, TLR4, HLA-DR, CD86, PDL1, CCR7 and CD40 expression. We observed a lower proportion of pDCs in HOC compared to HYC. Additionally, we found higher expression of activation markers on classical and intermediate monocytes and on cDC2 in HOC compared to HYC. Frail participants had a higher expression of CD40 on classical and non-classical monocytes compared to the HOC group. We document a substantial effect of ageing on monocytes and DCs. Reduced pDCs in older people may underlie their impaired ability to counter viral infections, whereas enhanced expression of activation markers could indicate a state of inflammageing. Future studies could elucidate the functional consequences of CD40 upregulation with frailty.
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Affiliation(s)
- Rosanne D Reitsema
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, Groningen, The Netherlands
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Ashok K Kumawat
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Bernd-Cornèl Hesselink
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, Groningen, The Netherlands
| | - Debbie van Baarle
- Department of Medical Microbiology and Infection Prevention, University Medical Center Groningen, Groningen, The Netherlands
| | - Yannick van Sleen
- Department of Rheumatology and Clinical Immunology, University Medical Center Groningen, Groningen, The Netherlands.
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Berclaz LM, Altendorf-Hofmann A, Lindner LH, Burkhard-Meier A, Di Gioia D, Dürr HR, Klein A, Albertsmeier M, Schmidt-Hegemann NS, Klauschen F, Knösel T. TIM-3 Qualifies as a Potential Immunotherapeutic Target in Specific Subsets of Patients with High-Risk Soft Tissue Sarcomas (HR-STS). Cancers (Basel) 2023; 15:2735. [PMID: 37345075 DOI: 10.3390/cancers15102735] [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: 04/13/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 06/23/2023] Open
Abstract
(1) Background: The expression of T cell immunoglobulin and mucin domain-containing protein 3 (TIM-3), an immune checkpoint receptor on T cells, has been associated with dismal outcomes and advanced tumor stages in various solid tumors. The blockade of TIM-3 is currently under examination in several clinical trials. This study examines TIM-3 expression in high-risk soft tissue sarcomas (HR-STS). (2) Methods: Tumor cell expression of TIM-3 on protein level was analyzed in pre-treatment biopsies of patients with HR-STS. TIM-3 expression was correlated with clinicopathological parameters including tumor-infiltrating lymphocyte (TIL) counts, programmed cell death 1 (PD-1) and programmed cell death ligand 1 (PDL-1) expression in patients with HR-STS. Survival dependent on the expression of TIM-3 was analyzed. (3) Results: TIM-3 expression was observed in 101 (56%) out of 179 pre-treatment biopsies of patients with HR-STS. TIM-3 expression was significantly more often observed in undifferentiated pleomorphic sarcomas (UPS) compared to other histological subtypes (p < 0.001), high TIL counts (p < 0.001), and high PD-1 (p < 0.001) and PD-L1 expression (p < 0.001). TIM-3 expression did not have a prognostic impact on survival in patients with HR-STS. (4) Conclusions: This is the first study to demonstrate a significant tumor cell expression of TIM-3 in specific subsets of patients with HR-STS. TIM-3 qualifies as a potential immunotherapeutic target in HR-STS.
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Affiliation(s)
- Luc M Berclaz
- Department of Internal Medicine III, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Annelore Altendorf-Hofmann
- Department of General, Visceral and Vascular Surgery, Friedrich-Schiller University Jena, 07747 Jena, Germany
| | - Lars H Lindner
- Department of Internal Medicine III, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Anton Burkhard-Meier
- Department of Internal Medicine III, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Dorit Di Gioia
- Department of Internal Medicine III, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Hans Roland Dürr
- Orthopaedic Oncology, Department of Orthopaedics and Trauma Surgery, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Alexander Klein
- Orthopaedic Oncology, Department of Orthopaedics and Trauma Surgery, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Markus Albertsmeier
- Department of General, Visceral and Transplantation Surgery, University Hospital, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Nina-Sophie Schmidt-Hegemann
- Department of Radiation Oncology, University Hospital, Ludwig-Maximilians-University (LMU) Munich, Marchioninistr. 15, 81377 Munich, Germany
| | - Frederick Klauschen
- Institute of Pathology, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
| | - Thomas Knösel
- Institute of Pathology, Ludwig-Maximilians-University (LMU) Munich, 81377 Munich, Germany
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4
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Gatto M, Bjursten S, Jonsson CA, Agelii ML, Jonell C, McGrath S, Lönnblom E, Sareila O, Holmdahl R, Rudin A, Levin M, Gjertsson I. Early Increase of Circulating Transitional B Cells and Autoantibodies to Joint-Related Proteins in Patients With Metastatic Melanoma Developing Checkpoint Inhibitor-Induced Inflammatory Arthritis. Arthritis Rheumatol 2022; 75:856-863. [PMID: 36409578 DOI: 10.1002/art.42406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/20/2022] [Accepted: 11/08/2022] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To investigate potential associations between B cell-related immunologic changes and development of inflammatory arthritis (IA) after treatment with immune checkpoint inhibitors (ICIs). METHODS Patients who developed ICI-induced IA (ICI-IA) and patients who did not develop immune-related adverse events (non-IRAE) after receiving ICIs to treat metastatic melanoma were consecutively recruited. Blood samples were collected at the time of ICI-IA occurrence and at different time points during treatment. Peripheral blood B cell subsets during ICI treatment were analyzed by flow cytometry. Rheumatoid factor, anti-citrullinated protein antibodies, and antibodies against joint-related proteins were measured. RESULTS Proportions of CD19+ B cells were higher in patients with ICI-IA (n = 7) compared to patients with non-IRAE (n = 15) (median 11.7% [interquartile range (IQR) 9.7-16.2%] versus 8.1% [IQR 5.7-11.0%]; P = 0.03). The proportion and absolute numbers of transitional CD19+CD10+CD24high CD38high B cells were increased in patients with ICI-IA compared to non-IRAE patients (median 8.1% [IQR 4.9-12.1%] versus 3.6% [IQR 1.9-4.9%]; median 10.7 cells/μl [IQR 8.9-19.6] versus 4.4 cells/μl [IQR 2.3-6.6]; P < 0.01 for both). In addition, higher levels of transitional B cells were associated with development of ICI-IA (odds ratio 2.25 [95% confidence interval 1.03-4.9], P = 0.04). Transitional B cells increased before the onset of overt ICI-IA and decreased between the active and quiescent stages of ICI-IA (P = 0.02). Autoantibodies to type II collagen epitopes were detected in up to 43% of ICI-IA patients compared to none of the non-IRAE patients (P = 0.02). CONCLUSION Development of ICI-IA is accompanied by an increase in transitional B cells and by production of autoantibodies to joint-related proteins. Monitoring of B cell-driven abnormalities upon ICI treatment may help earlier recognition of ICI-IA.
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Affiliation(s)
- Mariele Gatto
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden, and Department of Medicine, Unit of Rheumatology, University of Padova, Italy
| | - Sara Bjursten
- Department of Oncology, Sahlgrenska University Hospital, and Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Charlotte A Jonsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Monica Leu Agelii
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Caroline Jonell
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Sarah McGrath
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Erik Lönnblom
- Department of Medical Biochemistry and Biophysics, Section for Medical Inflammation Research, Karolinska Institute, Stockholm, Sweden
| | - Outi Sareila
- Department of Medical Biochemistry and Biophysics, Section for Medical Inflammation Research, Karolinska Institute, Stockholm, Sweden
| | - Rikard Holmdahl
- Department of Medical Biochemistry and Biophysics, Section for Medical Inflammation Research, Karolinska Institute, Stockholm, Sweden
| | - Anna Rudin
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Max Levin
- Department of Oncology, Sahlgrenska University Hospital, Gothenburg, Sweden, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden, and Wallenberg Laboratory for Cardiovascular Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Inger Gjertsson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Guo Y, Yang J, Ren K, Tian X, Gao H, Tian X, Zhang X, Kan Q. The Heterogeneity of Immune Cell Infiltration Landscape and Its Immunotherapeutic Implications in Hepatocellular Carcinoma. Front Immunol 2022; 13:861525. [PMID: 35355983 PMCID: PMC8959995 DOI: 10.3389/fimmu.2022.861525] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 02/11/2022] [Indexed: 12/24/2022] Open
Abstract
Immunotherapy, closely associated with immune infiltration and tumor mutation burden (TMB), is emerging as a promising strategy for treating tumors, but its low response rate in hepatocellular carcinoma (HCC) remains a major challenge. Herein, we applied two algorithms to uncover the immune infiltration landscape of the immune microenvironment in 491 HCC patients. Three immune infiltration patterns were defined using the CIBERSORT method, and the immune cell infiltration (ICI) scores were established using principal component analysis. In the high ICI score group, the activation of the Wnt/β-catenin pathway was significantly enriched and expressions of immune checkpoint genes increased, which showed a pessimistic outcome. The low ICI score group was characterized by increased TMB and enrichment of metabolism-related pathways. Further analysis found that the ICI score exhibited a significant difference in age ≥65/age <65, grade I/grade II–IV, and response to immunotherapy. Moreover, the CTNNB1 mutation status was found to be closely associated with prognosis and immunotherapeutic efficiency, significantly affecting the ICI score and TMB, which might be regarded as a potential marker for the treatment of HCC. The evaluation of immune infiltration patterns can improve the understanding of the tumor immune microenvironment and provide new directions for the study of individualized immunotherapy strategies for HCC.
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Affiliation(s)
- Yuanyuan Guo
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Jing Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Kaidi Ren
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Xueke Tian
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Hua Gao
- Department of Radiotherapy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xin Tian
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Xiaojian Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
| | - Quancheng Kan
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, China
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Garcia MG, Deng Y, Murray C, Reyes RM, Padron A, Bai H, Kancharla A, Gupta H, Shen-Orr S, Curiel TJ. Immune checkpoint expression and relationships to anti-PD-L1 immune checkpoint blockade cancer immunotherapy efficacy in aged versus young mice. AGING AND CANCER 2022; 3:68-83. [PMID: 36876140 PMCID: PMC9980712 DOI: 10.1002/aac2.12045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Introduction Aging is the biggest cancer risk, and immune checkpoint (IC) inhibition (ICI) is a revolutionary cancer immunotherapy approach. Nonetheless, there are limited preclinical/clinical data regarding aging effects on ICI outcomes or age effects on IC expression in different organs or tumors. Methods Flow cytometry assessed IC on immune and non-immune cells in various organs in young and aged BL6 mice. Comparisons: aged versus young naïve WT versus interferon-γ KO mice and WT challenged with B16F10 melanoma and treated with αPD-1 or αPD-L1 ICI. We co-cultured young and aged T cells and myeloid cells in vitro and used OMIQ analyses to test cell-cell interactions. Results αPD-1 ICI treated melanoma in young and aged hosts, whereas αPD-L1 ICI was only effective in young. We found considerable, previously undescribed age effects on expression of various IC molecules participating in the ICI treatment, including PD-1, PD-L1, PD-L2, and CD80, in distinct organs and in the tumor. These data help explain differential ICI efficacy in young and aged hosts. Host interferon-γ influenced age effects on IC expression in both directions depending on specific IC molecule and tissue. IC expression was further affected by tumor challenge on immune, non-immune, and tumor cells in tumor and other organs. In in vitro co-culture, αPD-1 versus αPD-L1 distinctly influenced polyclonal T cells in young versus aged, suggesting mechanisms for distinct age-related ICI outcomes. Conclusion Age affects IC expression on specific immune cells in an organ- and tissue-specific manner. ICs were generally higher on aged immune cells. High immune-cell PD-1 could help explain αPD-1 efficacy in aged. High co-expression of CD80 with PD-L1 on dendritic cells could help explain lack of αPD-L1 efficacy in aged hosts. Factors other than myeloid cells and interferon-γ also affect age-related IC expression and T cell function, meriting additional studies.
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Affiliation(s)
- Myrna G Garcia
- South Texas Medical Scientist Training Program, University of Texas Health, San Antonio, Texas, USA.,Graduate School of Biomedical Sciences, University of Texas Health, San Antonio, Texas, USA
| | - Yilun Deng
- Department of Medicine, University of Texas Health, San Antonio, Texas, USA
| | - Clare Murray
- South Texas Medical Scientist Training Program, University of Texas Health, San Antonio, Texas, USA.,Graduate School of Biomedical Sciences, University of Texas Health, San Antonio, Texas, USA
| | - Ryan M Reyes
- South Texas Medical Scientist Training Program, University of Texas Health, San Antonio, Texas, USA
| | - Alvaro Padron
- Department of Medicine, University of Texas Health, San Antonio, Texas, USA
| | - Haiyan Bai
- Department of Medicine, University of Texas Health, San Antonio, Texas, USA
| | - Aravind Kancharla
- Department of Medicine, University of Texas Health, San Antonio, Texas, USA.,Senda Biosciences, Cambridge, MA, USA
| | - Harshita Gupta
- Department of Medicine, University of Texas Health, San Antonio, Texas, USA
| | - Shai Shen-Orr
- Technion, Israel Institute of Technology, Haifa, Israel
| | - Tyler J Curiel
- South Texas Medical Scientist Training Program, University of Texas Health, San Antonio, Texas, USA.,Graduate School of Biomedical Sciences, University of Texas Health, San Antonio, Texas, USA.,Department of Medicine, University of Texas Health, San Antonio, Texas, USA.,Clayton Foundation for Research, Houston, Texas, USA.,Mays Cancer Center, University of Texas Health, San Antonio, Texas, USA
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Yero A, Shi T, Farnos O, Routy JP, Tremblay C, Durand M, Tsoukas C, Costiniuk CT, Jenabian MA. Dynamics and epigenetic signature of regulatory T-cells following antiretroviral therapy initiation in acute HIV infection. EBioMedicine 2021; 71:103570. [PMID: 34500304 PMCID: PMC8429924 DOI: 10.1016/j.ebiom.2021.103570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/10/2021] [Accepted: 08/19/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND HIV infection promotes the expansion of immunosuppressive regulatory T-cells (Tregs), contributing to immune dysfunction, tissue fibrosis and disease progression. Early antiretroviral treatment (ART) upon HIV infection improves CD4 count and decreases immune activation. However, Treg dynamics and their epigenetic regulation following early ART initiation remain understudied. METHODS Treg subsets were characterized by flow cytometry in 103 individuals, including untreated HIV-infected participants in acute and chronic phases, ART-treated in early infection, elite controllers (ECs), immunological controllers (ICs), and HIV-uninfected controls. The methylation status of six regulatory regions of the foxp3 gene was assessed using MiSeq technology. FINDINGS Total Treg frequency increased overtime during HIV infection, which was normalized in early ART recipients. Tregs in untreated individuals expressed higher levels of activation and immunosuppressive markers (CD39, and LAP(TGF-β1)), which remained unchanged following early ART. Expression of gut migration markers (CCR9, Integrin-β7) by Tregs was elevated during untreated HIV infection, while they declined with the duration of ART but not upon early ART initiation. Notably, gut-homing Tregs expressing LAP(TGF-β1) and CD39 remained higher despite early treatment. Additionally, the increase in LAP(TGF-β1)+ Tregs overtime were consistent with higher demethylation of conserved non-coding sequence (CNS)-1 in the foxp3 gene. Remarkably, LAP(TGF-β1)-expressing Tregs in ECs were significantly higher than in uninfected subjects, while the markers of Treg activation and gut migration were not different. INTERPRETATION Early ART initiation was unable to control the levels of immunosuppressive Treg subsets and their gut migration potential, which could ultimately contribute to gut tissue fibrosis and HIV disease progression. FUNDING This study was funded by the Canadian Institutes of Health Research (CIHR, grant MOP 142294) and in part by the AIDS and Infectious Diseases Network of the Réseau SIDA et maladies infectieuses du Fonds de recherche du Québec-Santé (FRQ-S).
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Affiliation(s)
- Alexis Yero
- Department of Biological Sciences and CERMO-FC Research Centre, Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - Tao Shi
- Department of Biological Sciences and CERMO-FC Research Centre, Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - Omar Farnos
- Department of Biological Sciences and CERMO-FC Research Centre, Université du Québec à Montréal (UQAM), Montreal, QC, Canada
| | - Jean-Pierre Routy
- Research Institute of McGill University Health Centre, Montreal, QC, Canada; Chronic Viral Illness Service, Division of Infectious Disease, Department of Medicine, Glen Site, McGill University Health Centre, Montreal, QC, Canada
| | - Cécile Tremblay
- CHUM Research Centre, Montreal, QC, Canada; Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada
| | | | - Christos Tsoukas
- Research Institute of McGill University Health Centre, Montreal, QC, Canada; Division of Clinical Immunology and Allergy, Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Cecilia T Costiniuk
- Research Institute of McGill University Health Centre, Montreal, QC, Canada; Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- Department of Biological Sciences and CERMO-FC Research Centre, Université du Québec à Montréal (UQAM), Montreal, QC, Canada; Department of Microbiology, Infectiology and Immunology, Faculty of Medicine, Université de Montréal, Montreal, QC, Canada; Department of Microbiology & Immunology, McGill University, Montreal, QC, Canada.
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8
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Dillon SM, Thompson TA, Christians AJ, McCarter MD, Wilson CC. Reduced immune-regulatory molecule expression on human colonic memory CD4 T cells in older adults. Immun Ageing 2021; 18:6. [PMID: 33581731 PMCID: PMC7881462 DOI: 10.1186/s12979-021-00217-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 02/02/2021] [Indexed: 12/31/2022]
Abstract
BACKGROUND The etiology of the low-level chronic inflammatory state associated with aging is likely multifactorial, but a number of animal and human studies have implicated a functional decline of the gastrointestinal immune system as a potential driver. Gut tissue-resident memory T cells play critical roles in mediating protective immunity and in maintaining gut homeostasis, yet few studies have investigated the effect of aging on human gut T cell immunity. To determine if aging impacted CD4 T cell immunity in the human large intestine, we utilized multi-color flow cytometry to measure colonic lamina propria (LP) CD4 T cell frequencies and immune-modulatory marker expression in younger (mean ± SEM: 38 ± 1.5 yrs) and older (77 ± 1.6 yrs) adults. To determine cellular specificity, we evaluated colon LP CD8 T cell frequency and phenotype in the same donors. To probe tissue specificity, we evaluated the same panel of markers in peripheral blood (PB) CD4 T cells in a separate cohort of similarly aged persons. RESULTS Frequencies of colonic CD4 T cells as a fraction of total LP mononuclear cells were higher in older persons whereas absolute numbers of colonic LP CD4 T cells per gram of tissue were similar in both age groups. LP CD4 T cells from older versus younger persons exhibited reduced CTLA-4, PD-1 and Ki67 expression. Levels of Bcl-2, CD57, CD25 and percentages of activated CD38+HLA-DR+ CD4 T cells were similar in both age groups. In memory PB CD4 T cells, older age was only associated with increased CD57 expression. Significant age effects for LP CD8 T cells were only observed for CTLA-4 expression, with lower levels of expression observed on cells from older adults. CONCLUSIONS Greater age was associated with reduced expression of the co-inhibitory receptors CTLA-4 and PD-1 on LP CD4 T cells. Colonic LP CD8 T cells from older persons also displayed reduced CTLA-4 expression. These age-associated profiles were not observed in older PB memory CD4 T cells. The decline in co-inhibitory receptor expression on colonic LP T cells may contribute to local and systemic inflammation via a reduced ability to limit ongoing T cell responses to enteric microbial challenge.
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Affiliation(s)
- Stephanie M Dillon
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - Tezha A Thompson
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - Allison J Christians
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - Martin D McCarter
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA
| | - Cara C Wilson
- Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, 80045, USA.
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