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Kientega T, Marcoux S, Bourbonnais J, Montpetit J, Caru M, Cardin GB, Arbour N, Marcil V, Curnier D, Laverdière C, Sinnett D, Rodier F. Premature thymic functional senescence is a hallmark of childhood acute lymphoblastic leukemia survivorship. Blood Cancer J 2024; 14:96. [PMID: 38871704 DOI: 10.1038/s41408-024-01071-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/07/2024] [Accepted: 05/16/2024] [Indexed: 06/15/2024] Open
Abstract
Childhood acute lymphoblastic leukemia (cALL) survivors suffer early-onset chronic diseases classically associated with aging. Normal aging is accompanied by organ dysfunctions, including immunological ones. We hypothesize that thymic immunosenescence occurs in cALL survivors and that its severity may correlate with early-onset chronic diseases. The PETALE study is a cALL survivor cohort with an extensive cardiovascular and metabolic evaluation. The thymic immunosenescence biomarker, signal joint T-cell receptor excision circles (TREC), was evaluated and was highly correlated with age in healthy participants (n = 281) and cALL survivors (n = 248). We observed a systematic thymic immunoage accentuation in each cALL survivor compared to controls ranging from 5.9 to 88.3 years. The immunoage gain was independent of age at diagnosis and treatment modalities and was more severe for females. Thymic aging was associated with several pathophysiological parameters, was greater in survivors suffering from metabolic syndrome, but there was no significant association with global physical condition. The decrease in TREC was independent from blood cell counts, which were normal, suggesting a segmental aging of the thymic compartment. Indeed, increased plasmatic T cell regulatory cytokines IL-6, IL-7 and GM-CSF accompanied high immunoage gain. Our data reveal that cALL or its treatment trigger a rapid immunoage gain followed by further gradual thymic immunosenescence, similar to normal aging. This leads to an enduring shift in accentuated immunoage compared to chronological age. Thus, accentuated thymic immunosenescence is a hallmark of cALL survivorship and TREC levels could be useful immunosenescence biomarkers to help monitoring the health of cancer survivors.
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Affiliation(s)
- Tibila Kientega
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
- Institut du cancer de Montréal, Montréal, QC, Canada
| | - Sophie Marcoux
- Université Laval, Département de médecine sociale et préventive, Québec, QC, Canada
- Centre de recherche du Centre hospitalier universitaire de Québec-Université Laval, Québec, QC, Canada
| | - Jessica Bourbonnais
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
- Institut du cancer de Montréal, Montréal, QC, Canada
| | - Jade Montpetit
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
- Institut du cancer de Montréal, Montréal, QC, Canada
| | - Maxime Caru
- Centre de recherche Azrieli du CHU Sainte-Justine, Montréal, QC, Canada
- Department of Pediatrics, Division of Hematology and Oncology, Penn State College of Medicine, Hershey, PA, USA
| | - Guillaume B Cardin
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
- Institut du cancer de Montréal, Montréal, QC, Canada
| | - Nathalie Arbour
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada
- Université de Montréal, Département de Neurosciences, Montréal, QC, Canada
| | - Valérie Marcil
- Centre de recherche Azrieli du CHU Sainte-Justine, Montréal, QC, Canada
- Université de Montréal, Département de Nutrition, Montréal, QC, Canada
| | - Daniel Curnier
- Centre de recherche Azrieli du CHU Sainte-Justine, Montréal, QC, Canada
- Université de Montréal, Faculté de médecine, École de kinésiologie et des sciences de l'activité physique, Laboratoire de physiopathologie de l'exercice (LPEX), Montréal, QC, Canada
| | - Caroline Laverdière
- Centre de recherche Azrieli du CHU Sainte-Justine, Montréal, QC, Canada
- Université de Montréal, Département de Pédiatrie, Montréal, QC, Canada
| | - Daniel Sinnett
- Centre de recherche Azrieli du CHU Sainte-Justine, Montréal, QC, Canada
- Université de Montréal, Département de Pédiatrie, Montréal, QC, Canada
| | - Francis Rodier
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Montréal, QC, Canada.
- Institut du cancer de Montréal, Montréal, QC, Canada.
- Université de Montréal, Département de Radiologie, radio-oncologie et médecine nucléaire, Montréal, QC, Canada.
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Démoulins T, Baron ML, Gauchat D, Kettaf N, Reed SJ, Charpentier T, Kalinke U, Lamarre A, Ahmed R, Sékaly RP, Sarkar S, Kalia V. Induction of thymic atrophy and loss of thymic output by type-I interferons during chronic viral infection. Virology 2022; 567:77-86. [PMID: 35032866 DOI: 10.1016/j.virol.2021.12.007] [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: 04/06/2021] [Revised: 11/30/2021] [Accepted: 12/20/2021] [Indexed: 01/30/2023]
Abstract
Type-I interferon (IFN-I) signals exert a critical role in disease progression during viral infections. However, the immunomodulatory mechanisms by which IFN-I dictates disease outcomes remain to be fully defined. Here we report that IFN-I signals mediate thymic atrophy in viral infections, with more severe and prolonged loss of thymic output and unique kinetics and subtypes of IFN-α/β expression in chronic infection compared to acute infection. Loss of thymic output was linked to inhibition of early stages of thymopoiesis (DN1-DN2 transition, and DN3 proliferation) and pronounced apoptosis during the late DP stage. Notably, infection-associated thymic defects were largely abrogated upon ablation of IFNαβR and partially mitigated in the absence of CD8 T cells, thus implicating direct as well as indirect effects of IFN-I on thymocytes. These findings provide mechanistic underpinnings for immunotherapeutic strategies targeting IFN-1 signals to manipulate disease outcomes during chronic infections and cancers.
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Affiliation(s)
- Thomas Démoulins
- Institute of Virology and Immunology, Bern, Switzerland; Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | | | - Dominique Gauchat
- Centre Hospitalier de l'Université de Montréal (CHUM), 1000, rue Saint-Denis, Montréal, Québec, H2X 0C1, Canada
| | - Nadia Kettaf
- Laboratoire d'immunologie, Centre de Recherche du Centre Hospitalier de l'Université de Montréal, Saint-Luc, Montréal, QC, H2X 1P1, Canada
| | - Steven James Reed
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, WA, 98101, USA
| | - Tania Charpentier
- Centre INRS-Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, Québec, H7V 1B7, Canada
| | - Ulrich Kalinke
- Institute for Experimental Infection Research, TWINCORE, Centre for Experimental and Clinical Infection Research, A Joint Venture Between the Helmholtz Centre for Infection Research and the Hannover Medical School, Hannover, Germany
| | - Alain Lamarre
- Centre INRS-Institut Armand-Frappier, 531, Boulevard des Prairies, Laval, Québec, H7V 1B7, Canada
| | - Rafi Ahmed
- Department of Microbiology & Immunology, School of Medicine, Emory University, 1510 Clifton Road, Atlanta, GA, USA
| | - Rafick-Pierre Sékaly
- Department of Pathology, Emory University Winship Cancer Center, Atlanta, GA, USA
| | - Surojit Sarkar
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, WA, 98101, USA; Department of Pathology, University of Washington School of Medicine, Seattle, WA, 98195, USA; Department of Pediatrics, Division of Hematology and Oncology, University of Washington, Seattle, WA, 98195, USA.
| | - Vandana Kalia
- Ben Towne Center for Childhood Cancer Research, Seattle Children's Research Institute, Seattle, WA, 98101, USA; Department of Pediatrics, Division of Hematology and Oncology, University of Washington, Seattle, WA, 98195, USA.
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Valpione S, Galvani E, Tweedy J, Mundra PA, Banyard A, Middlehurst P, Barry J, Mills S, Salih Z, Weightman J, Gupta A, Gremel G, Baenke F, Dhomen N, Lorigan PC, Marais R. Immune-awakening revealed by peripheral T cell dynamics after one cycle of immunotherapy. NATURE CANCER 2020; 1:210-221. [PMID: 32110781 PMCID: PMC7046489 DOI: 10.1038/s43018-019-0022-x] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 12/17/2019] [Indexed: 12/19/2022]
Abstract
Our understanding of how checkpoint inhibitors (CPI) affect T cell evolution is incomplete, limiting our ability to achieve full clinical benefit from these drugs. Here we analyzed peripheral T cell populations after one cycle of CPI and identified a dynamic awakening of the immune system revealed by T cell evolution in response to treatment. We sequenced T cell receptors (TCR) in plasma cell-free DNA (cfDNA) and peripheral blood mononuclear cells (PBMC) and performed phenotypic analysis of peripheral T cell subsets from metastatic melanoma patients treated with CPI. We found that early peripheral T cell turnover and TCR repertoire dynamics identified which patients would respond to treatment. Additionally, the expansion of a subset of immune-effector peripheral T cells we call TIE cells correlated with response. These events are prognostic and occur within 3 weeks of starting immunotherapy, raising the potential for monitoring patients responses using minimally invasive liquid biopsies."
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Affiliation(s)
- Sara Valpione
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
- The Christie NHS Foundation Trust, Manchester, UK
| | - Elena Galvani
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | - Joshua Tweedy
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | - Piyushkumar A Mundra
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | - Antonia Banyard
- Advanced Imaging and Flow Cytometry, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | - Philippa Middlehurst
- Manchester Cancer Research Centre Biobank, The Christie NHS Foundation Trust, Manchester, UK
| | - Jeff Barry
- Advanced Imaging and Flow Cytometry, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | - Sarah Mills
- Manchester Cancer Research Centre Biobank, The Christie NHS Foundation Trust, Manchester, UK
| | - Zena Salih
- The Christie NHS Foundation Trust, Manchester, UK
| | - John Weightman
- Molecular Biology Core Facility, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | | | - Gabriela Gremel
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
- Boehringer Ingelheim, Vienna, Austria
| | - Franziska Baenke
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
- German Cancer Consortium (DKTK), German Cancer Research Centre (DKFZ), Heidelberg, Germany
- Department of Visceral, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technical University Dresden, Dresden, Germany
| | - Nathalie Dhomen
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK
| | | | - Richard Marais
- Molecular Oncology Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park, UK.
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Thymic Function Is Most Severely Impaired in Chronic HIV-1 Infection, but Individuals With Faster Disease Progression During Early HIV-1 Infection Expressed Lower Levels of RTEs. J Acquir Immune Defic Syndr 2016; 70:472-8. [PMID: 26569175 DOI: 10.1097/qai.0000000000000801] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In HIV disease course, the decline of peripheral CD4 T-cell count correlates with rapid disease progression. The supply of peripheral naive T cells by the thymus requires precursor T-cell proliferation within the thymus. In the setting of HIV-1 infection, when both naive and memory T cells are progressively depleted, the contribution of thymic dysfunction in CD4 depletion needs to be studied. Previous research has shown that thymic function may also be impaired in HIV-1 infection. However, it is inconclusive regarding whether this impairment occurred at the early time or during the chronic phase. In addition, the relationship between thymic dysfunction and disease progression remains unknown. In this study, we examined the thymic function in 65 HIV-infected individuals. Among them, 17 were in acute phase, 15 were in early chronic phase, 15 were in chronic phase with no ART (antiretroviral therapy), and 18 were on ART. We also included 11 uninfected individuals as controls. We measured the peripheral blood levels of T-cell receptor rearrangement excision circles and PTK7 and CD31 expressions for the frequency of circulating recent thymic emigrants. We observed that the 2 indicators of thymic function, sj/β-TREC and PTK7, seemed to be lower in the chronic infection group than those in the acute and early chronic groups. Both indicators returned to the normal level after ART. However, after 1-year follow-up of patients with early HIV-1 infection, rapid progressors (n = 4) had lower PTK7 and CD31 expressions than chronic progressors (n = 6).
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5
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Lee KA, Gay C, Humphreys J, Portillo CJ, Pullinger CR, Aouizerat BE. Telomere length is associated with sleep duration but not sleep quality in adults with human immunodeficiency virus. Sleep 2014; 37:157-66. [PMID: 24470704 DOI: 10.5665/sleep.3328] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND AND STUDY OBJECTIVE Telomere length provides an estimate of cellular aging and is influenced by oxidative stress and health behaviors such as diet and exercise. This article describes relationships between telomere length and sleep parameters that included total sleep time (TST), wake after sleep onset (WASO), and self-reported sleep quality in a sample of adults with chronic illness. DESIGN AND PARTICIPANTS Cross-sectional study of 283 adults (74% male, 42% Caucasian) infected with human immunodeficiency virus (HIV) while living in the San Francisco Bay area, CA, USA. Ages ranged from 22-77 y. MEASUREMENTS AND RESULTS TST and WASO were estimated with wrist actigraphy across 72 h; self-reported sleep quality was assessed with the Pittsburgh Sleep Quality Index. Relative telomere length (RTL) in leukocytes was estimated by quantitative polymerase chain reaction assays. Shorter RTL was associated with older age, and RTL was shorter in males than females. RTL was unrelated to HIV disease characteristics. RTL was not associated with WASO or self-reported sleep quality. Participants with at least 7 h sleep had longer RTL than those with less than 7 h, even after controlling for the effects of age, sex, race, education, body mass index, metabolic hormones (i.e., leptin, ghrelin, adiponectin, and resistin), depression and anxiety, and sleep quality. CONCLUSION Results suggest that sleep duration is associated with preserving telomere length in a population of human immunodeficiency virus-infected adults. Getting at least 7 hours of sleep at night may either protect telomeres from damage or restore them on a nightly basis.
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Affiliation(s)
- Kathryn A Lee
- Department of Family Health Care Nursing, University of California at San Francisco, San Francisco, CA
| | - Caryl Gay
- Department of Family Health Care Nursing, University of California at San Francisco, San Francisco, CA ; Lovisenberg Diakonale Hospital, Oslo, Norway
| | | | - Carmen J Portillo
- Department of Community Health Systems, University of California at San Francisco, San Francisco, CA
| | - Clive R Pullinger
- Department of Physiological Nursing, University of California at San Francisco, San Francisco, CA ; Cardiovascular Research Institute, University of California at San Francisco, San Francisco, CA
| | - Bradley E Aouizerat
- Department of Physiological Nursing, University of California at San Francisco, San Francisco, CA ; Institute for Human Genetics, University of California at San Francisco, San Francisco, CA
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Yang L, Mailloux A, Rollison DE, Painter JS, Maciejewski J, Paquette RL, Loughran TP, McGraw K, Makishima H, Radhakrishnan R, Wei S, Ren X, Komrokji R, List AF, Epling-Burnette PK. Naive T-cells in myelodysplastic syndrome display intrinsic human telomerase reverse transcriptase (hTERT) deficiency. Leukemia 2012; 27:897-906. [PMID: 23072779 PMCID: PMC4346223 DOI: 10.1038/leu.2012.300] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Telomeres are specialized structures providing chromosome integrity during cellular division along with protection against premature senescence and apoptosis. Accelerated telomere attrition in patients with myelodysplastic syndrome (MDS) occurs by an undefined mechanism. Although the MDS clone originates within the myeloid compartment, T-lymphocytes display repertoire contraction and loss of naive T-cells. The replicative lifespan of T-cells is stringently regulated by telomerase activity. In MDS cases, we show that purified CD3+ T-cells have significantly shorter telomere length and reduced proliferative capacity upon stimulation compared with controls. To understand the mechanism, telomerase enzymatic activity and telomerase reverse transcriptase (hTERT), gene expression were compared in MDS cases (n=35) and healthy controls (n=42) within different T-cell compartments. Telomerase activity is greatest in naive T-cells illustrating the importance of telomere repair in homeostatic repertoire regulation. Compared with healthy controls, MDS cases had lower telomerase induction (P<0.0001) that correlated with significantly lower hTERT mRNA (P<0.0001), independent of age and disease stratification. hTERT mRNA deficiency affected naive but not memory T-cells, and telomere erosion in MDS occurred without evidence of an hTERT-promoter mutation, copy number variation or deletion. Telomerase insufficiency may undermine homeostatic control within the hematopoietic compartment and promote a change in the T-cell repertoire in MDS.
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Affiliation(s)
- L Yang
- Immunology Program at the H Lee Moffitt Cancer Center, Tampa, FL, USA
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7
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Rickabaugh TM, Kilpatrick RD, Hultin LE, Hultin PM, Hausner MA, Sugar CA, Althoff KN, Margolick JB, Rinaldo CR, Detels R, Phair J, Effros RB, Jamieson BD. The dual impact of HIV-1 infection and aging on naïve CD4 T-cells: additive and distinct patterns of impairment. PLoS One 2011; 6:e16459. [PMID: 21298072 PMCID: PMC3027697 DOI: 10.1371/journal.pone.0016459] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 12/16/2010] [Indexed: 02/04/2023] Open
Abstract
HIV-1-infected adults over the age of 50 years progress to AIDS more rapidly than adults in their twenties or thirties. In addition, HIV-1-infected individuals receiving antiretroviral therapy (ART) present with clinical diseases, such as various cancers and liver disease, more commonly seen in older uninfected adults. These observations suggest that HIV-1 infection in older persons can have detrimental immunological effects that are not completely reversed by ART. As naïve T-cells are critically important in responses to neoantigens, we first analyzed two subsets (CD45RA+CD31+ and CD45RA+CD31-) within the naïve CD4+ T-cell compartment in young (20–32 years old) and older (39–58 years old), ART-naïve, HIV-1 seropositive individuals within 1–3 years of infection and in age-matched seronegative controls. HIV-1 infection in the young cohort was associated with lower absolute numbers of, and shorter telomere lengths within, both CD45RA+CD31+CD4+ and CD45RA+CD31-CD4+ T-cell subsets in comparison to age-matched seronegative controls, changes that resembled seronegative individuals who were decades older. Longitudinal analysis provided evidence of thymic emigration and reconstitution of CD45RA+CD31+CD4+ T-cells two years post-ART, but minimal reconstitution of the CD45RA+CD31-CD4+ subset, which could impair de novo immune responses. For both ART-naïve and ART-treated HIV-1-infected adults, a renewable pool of thymic emigrants is necessary to maintain CD4+ T-cell homeostasis. Overall, these results offer a partial explanation both for the faster disease progression of older adults and the observation that viral responders to ART present with clinical diseases associated with older adults.
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Affiliation(s)
- Tammy M. Rickabaugh
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Ryan D. Kilpatrick
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Lance E. Hultin
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Patricia M. Hultin
- Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Mary Ann Hausner
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
| | - Catherine A. Sugar
- Department of Biostatistics, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - Keri N. Althoff
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Joseph B. Margolick
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Charles R. Rinaldo
- Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Roger Detels
- Department of Epidemiology, School of Public Health, University of California Los Angeles, Los Angeles, California, United States of America
| | - John Phair
- Feinberg School of Medicine, Northwestern University, Chicago, Illinois, United States of America
| | - Rita B. Effros
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- Department of Pathology and Laboratory Medicine, UCLA AIDS Institute, University of California Los Angeles, Los Angeles, California, United States of America
| | - Beth D. Jamieson
- Department of Medicine, UCLA AIDS Institute, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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Tonelli F, Marcucci T, Giudici F, Falchetti A, Brandi ML. Surgical approach in hereditary hyperparathyroidism. Endocr J 2009; 56:827-41. [PMID: 19797826 DOI: 10.1507/endocrj.k09e-204] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Affiliation(s)
- Francesco Tonelli
- Surgical Unit, Department of Clinical Physiopathology, and Regional Center for Hereditary Endocrine Tumors, University of Florence, Florence, Italy
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9
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Kolte L, Gaardbo JC, Skogstrand K, Ryder LP, Ersbøll AK, Nielsen SD. Increased levels of regulatory T cells (Tregs) in human immunodeficiency virus-infected patients after 5 years of highly active anti-retroviral therapy may be due to increased thymic production of naive Tregs. Clin Exp Immunol 2008; 155:44-52. [PMID: 19016807 DOI: 10.1111/j.1365-2249.2008.03803.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
This study determines levels of regulatory T cells (T(regs)), naive T(regs), immune activation and cytokine patterns in 15 adult human immunodeficiency virus (HIV)-infected patients receiving prolonged highly active anti-retroviral therapy (HAART) who have known thymic output, and explores if naive T(regs) may represent recent thymic emigrant T(regs). HIV-infected patients treated with HAART with a median of 1 and 5 years were compared with healthy controls. Percentages of T(regs) (CD3(+)CD4(+)CD25(+)CD127(low)), naive T(regs) (CD3(+)CD4(+)CD25(+)CD45RA(+)) and activation markers (CD38(+)human leucocyte antigen D-related) were determined by flow cytometry. Forkhead box P3 mRNA expression and T cell receptor excision circles (T(REC)) content in CD4(+) cells were determined by polymerase chain reaction and cytokines analysed with Luminex technology. Levels of T(regs) were significantly higher in HIV-infected patients compared with controls, both after 1 and 5 years of HAART (P<0.001), despite fully suppressed HIV-RNA and normalization of both CD4 counts, immune activation and cytokine patterns. Furthermore, levels of naive T(regs) were elevated significantly in HIV-infected patients (P<0.001) and were associated with thymic output measured as the T(REC) frequency in CD4(+) cells (P=0.038). In summary, T(reg) levels in HIV-infected patients are elevated even after 5 years of HAART. Increased thymic production of naive T(regs) may contribute to higher T(reg) levels in HIV-infection.
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Affiliation(s)
- L Kolte
- Department of Infectious Diseases, Copenhagen University Hospital, Hvidovre, Hvidovre, Denmark.
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10
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HIV-1 Nef protein expression in human CD34+ progenitors impairs the differentiation of an early T/NK cell precursor. Virology 2008; 377:207-15. [PMID: 18555888 DOI: 10.1016/j.virol.2008.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Revised: 03/25/2008] [Accepted: 04/14/2008] [Indexed: 12/30/2022]
Abstract
HIV-1 impairs the production of T cells, through mechanisms that are still unknown. Here, we investigated the effect of the expression of HIV-1 Nef on the T-cell potential of human hematopoietic CD34(+) precursors. Those progenitors were transduced by using lentiviral vectors expressing Nef and cultured on OP9-DL1 cells allowing the differentiation of T cell from human hematopoietic precursors. We demonstrate that Nef impairs the generation of a CD3epsilon(+)CD5(+) CD1a(+) precursor stage that has initiated a D-J rearrangement of the TCRbeta locus. Onward stages of T-cell development were also affected with a quantitative reduction of CD4(+) intraCD3epsilon(+) Immature single positive cells (ISP), Double Positive (DP) CD4(+)CD8(+) TCRalphabeta T cells and CD56(+) NK cells. But B cell production was not affected. Limiting dilution analyses demonstrated a significant reduction in the frequency of T/NK progenitors among Nef-expressing CD34(+) cells. Altogether, these data demonstrate that Nef interferes with the differentiation of a primitive lymphoid human precursor with a T/NK potential.
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11
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Unryn BM, Hao D, Glück S, Riabowol KT. Acceleration of Telomere Loss by Chemotherapy Is Greater in Older Patients with Locally Advanced Head and Neck Cancer. Clin Cancer Res 2006; 12:6345-50. [PMID: 17085644 DOI: 10.1158/1078-0432.ccr-06-0486] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Chronic viral infection and combinations of chemotherapeutic drugs have been reported to accelerate telomere erosion. Here, we asked if chemoradiotherapy, using the single agent cisplatin, would accelerate telomere loss in head and neck cancer patients, and whether loss was linked to smoking status, age, gender, or stage of disease at diagnosis. EXPERIMENTAL DESIGN Blood samples were collected from 20 patients with squamous cell cancer of the head and neck before, during, and after chemoradiotherapy. Following DNA isolation from peripheral blood mononuclear cells, telomere length was measured by terminal restriction fragment analysis. RESULTS Chemoradiotherapy increased the rate of telomere erosion>100-fold. Telomere length before treatment in chemoradiotherapy patients was similar to age-matched controls. Although smokers began with significantly shorter telomeres, smoking status did not affect chemoradiotherapy-induced attrition, nor did gender or stage of disease. We also make the novel observation that a significantly greater telomere loss occurred in response to treatment in older patients, with those younger than 55 years losing an average of 400 bp of telomeric DNA compared with the 880 bp lost by those over 55 years. CONCLUSIONS The lack of telomere length difference before treatment suggests that shortened telomeres may not be a risk factor for development of head and neck cancer in the age range we examined. Chemoradiotherapy caused a severe telomere length reduction in all patients. The significant difference seen in the elderly (P=0.018) suggests that chemoradiotherapy may have more severe effects on the replicative capacity of blood cells in older patients.
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Affiliation(s)
- Brad M Unryn
- Department of Biochemistry, The University of Calgary Health Sciences Centre, Canada
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Suzuki H, Motohara M, Miyake A, Ibuki K, Fukazawa Y, Inaba K, Masuda K, Minato N, Kawamoto H, Hayami M, Miura T. Intrathymic effect of acute pathogenic SHIV infection on T-lineage cells in newborn macaques. Microbiol Immunol 2005; 49:667-79. [PMID: 16034211 DOI: 10.1111/j.1348-0421.2005.tb03646.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We intrarectally infected newborn macaques with a pathogenic simian/human immunodeficiency virus (SHIV) that induced rapid and profound CD4 (+) T cell depletion, and examined the early effects of this SHIV on the thymus. After intrarectal infection, viral loads were much higher in the thymus than in other lymphoid tissues in newborns. In contrast, no clear difference was seen in the viral loads of different tissues in adults. Histological and immunohistochemical observations showed severe thymic involution. Depletion of CD4 (+) thymocytes began in the medulla at 2 weeks post infection and spread over the whole thymus. After in vivo infection, the CD2 (+) subpopulation, which represents a relatively later stage of T cell progenitors, was selectively reduced and development of thymocytes from CD3 (-) CD4 (-) CD8 (-) cells to CD4 (+) CD8 (+) cells was impaired. These results suggest that profound and irreversible loss of CD4 (+) cells that are observed in the peripheral blood of SHIV-infected monkeys are due to destruction of the thymus and impaired thymopoiesis as a result of SHIV infection in the thymus.
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Affiliation(s)
- Hajime Suzuki
- Laboratory of Primate Model, Institute for Virus Research, Kyoto University, Japan
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Dion ML, Poulin JF, Bordi R, Sylvestre M, Corsini R, Kettaf N, Dalloul A, Boulassel MR, Debré P, Routy JP, Grossman Z, Sékaly RP, Cheynier R. HIV Infection Rapidly Induces and Maintains a Substantial Suppression of Thymocyte Proliferation. Immunity 2004; 21:757-68. [PMID: 15589165 DOI: 10.1016/j.immuni.2004.10.013] [Citation(s) in RCA: 182] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2004] [Revised: 09/27/2004] [Accepted: 10/22/2004] [Indexed: 12/21/2022]
Abstract
The supply of naive T cells by the thymus normally requires precursor T cell proliferation within the thymus and would be particularly important in the setting of HIV infection when both naive and memory T cells are progressively depleted. As a robust, quantitative index of intrathymic proliferation, the ratio of different T cell receptor excision circles (TRECs), molecular markers of distinct T cell receptor rearrangements occurring at different stages of thymocyte development, was measured in peripheral blood-mononuclear cells (PBMCs). This ratio has the virtue that it is a "signature" of thymic emigrants throughout their entire life and, thus, can be measured in peripheral cell populations that are easy to obtain. Using the new assay, we evaluated the effect of HIV infection on intrathymic precursor T cell proliferation by longitudinal analysis of PBMCs from recently infected individuals. Our findings reveal a substantial reduction in intrathymic proliferation. The analysis also indicates the existence of a compensatory mechanism acting to sustain the numbers of recent thymic emigrants (RTEs) in the periphery.
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Affiliation(s)
- Marie-Lise Dion
- Laboratoire d'Immunologie, Centre de Recherches du CHUM, Hôtel-Dieu, Montréal, Québec H2X 1P1, Canada
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Landay A, Benning L, Bremer J, Weiser B, Burger H, Nowicki M, Kovacs A. Correlates of immune activation marker changes in human immunodeficiency virus (HIV)-seropositive and high-risk HIV-seronegative women who use illicit drugs. J Infect Dis 2003; 188:209-18. [PMID: 12854075 PMCID: PMC3164115 DOI: 10.1086/376509] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2002] [Accepted: 02/24/2003] [Indexed: 01/11/2023] Open
Abstract
The majority of natural history studies of human immunodeficiency virus (HIV) infection have immune and viral parameters in men. Data demonstrating that women have lower HIV-1 RNA levels than men at the same CD4 cell counts have raised the question of immunologic differences in HIV-seropositive women. This study describes levels and changes in phenotypic markers of immune maturity, function, and activation in the CD4 and CD8 cell subsets in HIV-seropositive and high-risk HIV-seronegative women. Our primary hypothesis was that activation levels would be significantly higher among illicit drug users. However, results showed that HIV-1 RNA level was the strongest predictor of marker level and that both HIV-1 RNA level and CD4 cell count were independently associated with CD4 activation, but illicit drug use was not. In summary, this study demonstrated that immune activation was a significant pathogenic feature in women and that activation was driven by HIV infection and not illicit drug use.
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Affiliation(s)
- Alan Landay
- Department of Immunology/Microbiology, Rush Medical College, 1735 W. Harrison Street, Rm. 616 Cohn, Chicago, IL 60612, USA.
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Richardson MW, Sverstiuk AE, Gracely EJ, Hendel H, Khalili K, Zagury JF, Rappaport J. T-cell receptor excision circles (TREC) and maintenance of long-term non-progression status in HIV-1 infection. AIDS 2003; 17:915-7. [PMID: 12660540 DOI: 10.1097/00002030-200304110-00018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Max W Richardson
- Center for Neurovirology and Cancer Biology, Temple University, Philadelphia, PA, USA
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Affiliation(s)
- Mette D Hazenberg
- Department of Clinical Viro-Immunology, Sanquin Research at CLB and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, The Netherlands
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Richardson MW, Mirchandani J, Duong J, Grimaldo S, Kocieda V, Hendel H, Khalili K, Zagury JF, Rappaport J. Antibodies to Tat and Vpr in the GRIV cohort: differential association with maintenance of long-term non-progression status in HIV-1 infection. Biomed Pharmacother 2003; 57:4-14. [PMID: 12642031 DOI: 10.1016/s0753-3322(02)00327-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The HIV-1 regulatory protein Tat and the accessory protein Vpr are thought to stimulate viral replication and contribute to viral pathogenesis as extracellular proteins. Humoral immune responses to these early viral proteins may therefore be beneficial. We examined serum anti-Tat and anti-Vpr IgG by ELISA in the GRIV cohort of HIV-1 seropositive slow/non-progressors (NP) and fast-progressors (FP), and in seronegative controls. Based on information obtained during a brief follow-up period (median = 20 months), NPs were sub-grouped as those maintaining non-progression status and therefore stable (NP-S), and those showing signs of disease progression (NP-P). As the primary comparison, initial serum anti-Tat and anti-Vpr IgG (prior to follow-up) were analyzed in the NP sub-groups and in FPs. Anti-Tat IgG was significantly higher in stable NP-S compared to unstable NP-P (P = 0.047) and FPs (P < 0.0005); the predictive value of higher anti-Tat IgG for maintenance of non-progression status was 92% (P = 0.029). In contrast, no-difference was observed in anti-Vpr IgG between NP-S and NP-P, although both were significantly higher than FPs (P </= 0.001). Serum anti-Tat IgG mapped to linear epitopes within the amino-terminus, the basic domain and the carboxy-terminal region of Tat in stable NP-S. Similar epitopes were identified in patients immunized with the Tat-toxoid in a Phase I study in Milan. High titer serum anti-Tat IgG from both GRIV and Milan cohorts cross-reacted in ELISA with Tat from diverse viral isolates, including HIV-1 subtype-E (CMU08) and SIVmac251 Tat; a correlation was observed between anti-Tat IgG titers and cross-reactivity. These results demonstrate that higher levels of serum anti-Tat IgG, but not anti-Vpr IgG, are associated with maintenance of non-progression status in HIV-1 infection. Evidence that vaccination with the Tat toxoid induces humoral immune responses to Tat similar to those observed in stable non-progressors is encouraging for vaccine strategies targeting Tat.
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Affiliation(s)
- Max W Richardson
- Center for Neurovirology and Cancer Biology, 224B BLS Building, Temple University, 1900 N. 12th Street, Philadelphia, PA 19122, USA
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Søndergaard SR, Essen MV, Schjerling P, Ullum H, Pedersen BK. Proliferation and telomere length in acutely mobilized blood mononuclear cells in HIV infected patients. Clin Exp Immunol 2002; 127:499-506. [PMID: 11966767 PMCID: PMC1906322 DOI: 10.1046/j.1365-2249.2002.01790.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the study was to investigate the mobilization of T cells in response to a stressful challenge (adrenalin stimulation), and to access T cells resided in the peripheral lymphoid organs in HIV infected patients. Seventeen patients and eight HIV seronegative controls received an adrenalin infusion for 1 h. Blood was sampled before, during and 1 h after adrenalin infusion. Proliferation and mean telomere restriction fragment length (telomeres) of blood mononuclear cells (BMNC) and purified CD8+ and CD4+ cells were investigated at all time points. In patients, the proliferation to pokeweed mitogens (PWM) was lower and decreased more during adrenalin infusion. After adrenalin infusion the proliferation to PWM was restored only in the controls. In all subjects telomeres in CD4+ cells declined during adrenalin infusion. Additionally, the patients had shortened telomeres in their CD8+ cells, and particularly HAART treated patients had shortened telomeres in all cell-subtypes. The finding that patients mobilized cells with an impaired proliferation to PWM during and after adrenalin infusion has possible clinical relevance for HIV infected patients during pathological stressful conditions, such as sepsis, surgery and burns. However, this study did not find a correlation between impaired proliferation and telomeres. It is concluded that physiological stress further aggravates the HIV-induced immune deficiency.
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Affiliation(s)
- S R Søndergaard
- Department of Infectious Diseases, Rigshospitalet, Copenhagen, Denmark.
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Capini CJ, Richardson MW, Hendel H, Sverstiuk A, Mirchandani J, Régulier EG, Khalili K, Zagury JF, Rappaport J. Autoantibodies to TNFalpha in HIV-1 infection: prospects for anti-cytokine vaccine therapy. Biomed Pharmacother 2001; 55:23-31. [PMID: 11237281 DOI: 10.1016/s0753-3322(00)00018-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Tumor necrosis factor alpha (TNFalpha) is a proinflammatory cytokine principally involved in the activation of lymphocytes in response to viral infection. TNFalpha also stimulates the production of other cytokines, activates NK cells and potentiates cell death and/or lysis in certain models of viral infection. Although TNFalpha might be expected to be a protective component of an antiviral immune response, several lines of evidence suggest that TNFalpha and other virally-induced cytokines actually may contribute to the pathogenesis of HIV infection. Based on the activation of HIV replication in response to TNFalpha, HIV appears to have evolved to take advantage of host cytokine activation pathways. Antibodies to TNFalpha are present in the serum of normal individuals as well as in certain autoimmune disorders, and may modulate disease progression in the setting of HIV infection. We examined TNFalpha-specific antibodies in HIV-infected non-progressors and healthy seronegatives; anti-TNFalpha antibody levels are significantly higher in GRIV seropositive slow/non-progressors (N = 120, mean = 0.24), compared to seronegative controls (N= 12, mean = 0.11). TNFalpha antibodies correlated positively with viral load, (P = 0.013, r = 0.282), and CD8+ cell count (P = 0.03, r = 0.258), and inversely with CD4+ cell count (P = 0.003, r = - 0.246), percent CD4+ cells (P = 0.008, r = -0.306), and CD4 :CD8 ratio (P = 0.033, r = - 0.251). TNFalpha antibodies also correlated positively with antibodies to peptides corresponding to the CD4 binding site of gp160 (P = 0.001, r = 0.384), the CD4 identity region (P = 0.016, r = 0.29), the V3 loop (P = 0.005, r = 0.34), and the amino terminus of Tat (P = 0.001, r = 0.395); TNFalpha antibodies also correlated positively with antibodies to Nef protein (P = 0.008, r = 0.302). The production of anti-TNFalpha antibodies appears to be an adaptive response to HIV infection and suggests the potential utility of modified cytokine vaccines in the treatment of HIV infections as well as AIDS-related and unrelated autoimmune and CNS disorders.
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Affiliation(s)
- C J Capini
- Center for Neurovirology and Cancer Biology, Temple University, Philadelphia, PA 19122, USA
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