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Abdoli Shadbad M, Miraki Feriz A, Baradaran B, Safarpour H. Tumor-infiltrating CD8 + sub-populations in primary and recurrent glioblastoma: An in-silico study. Heliyon 2024; 10:e27329. [PMID: 38495199 PMCID: PMC10943382 DOI: 10.1016/j.heliyon.2024.e27329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/19/2024] Open
Abstract
Background Glioblastoma multiforme (GBM) remains an incurable primary brain tumor. CD8+ tumor-infiltrating lymphocytes (TILs) can target malignant cells; however, their anti-tumoral immune responses mostly do not lead to GBM rejection in GBM patients. We profiled the sub-populations of tumor-infiltrating CD8+ T-cells, i.e., naïve, cytotoxic, and exhausted cells, in primary and recurrent GBM tissues and provided a blueprint for future precision-based GBM immunotherapy. Method We re-analyzed the raw data of single-cell RNA sequencing on the cells residing in the GBM microenvironment and leveraged tumor bulk RNA analyses to study the significance of CD8+ TILs sub-populations in primary and recurrent GBM. We investigated cell-cell interaction between exhausted CD8+ TILs and other immune cells residing in the primary and recurrent GBM microenvironments and profiled the expression changes following CD8+ TILs' transition from primary GBM to recurrent GBM. Results Exhausted CD8+ TILs are the majority of CD8+ TILs sub-populations in primary and recurrent GBM, and cytotoxic CD8+ TILs display decreased expression of inhibitory immune checkpoint (IC) molecules in the primary and recurrent GBM. In the primary and recurrent GBM microenvironment, exhausted CD8+ TILs interact most with tumor-infiltrating dendritic cells. Conclusion This study demonstrates the profiles of CD8+ TILs sub-populations in primary and recurrent GBM and provides a proof-of-concept for future precision-based GBM immunotherapy.
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Affiliation(s)
- Mahdi Abdoli Shadbad
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Adib Miraki Feriz
- Student Research Committee, Birjand University of Medical Sciences, Birjand, Iran
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Safarpour
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
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Jusztus V, Medyouni G, Bagosi A, Lampé R, Panyi G, Matolay O, Maka E, Krasznai ZT, Vörös O, Hajdu P. Activity of Potassium Channels in CD8 + T Lymphocytes: Diagnostic and Prognostic Biomarker in Ovarian Cancer? Int J Mol Sci 2024; 25:1949. [PMID: 38396628 PMCID: PMC10888402 DOI: 10.3390/ijms25041949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/31/2024] [Accepted: 02/03/2024] [Indexed: 02/25/2024] Open
Abstract
CD8+ T cells play a role in the suppression of tumor growth and immunotherapy. Ion channels control the Ca2+-dependent function of CD8+ lymphocytes such as cytokine/granzyme production and tumor killing. Kv1.3 and KCa3.1 K+ channels stabilize the negative membrane potential of T cells to maintain Ca2+ influx through CRAC channels. We assessed the expression of Kv1.3, KCa3.1 and CRAC in CD8+ cells from ovarian cancer (OC) patients (n = 7). We found that the expression level of Kv1.3 was higher in patients with malignant tumors than in control or benign tumor groups while the KCa3.1 activity was lower in the malignant tumor group as compared to the others. We demonstrated that the Ca2+ response in malignant tumor patients is higher compared to control groups. We propose that altered Kv1.3 and KCa3.1 expression in CD8+ cells in OC could be a reporter and may serve as a biomarker in diagnostics and that increased Ca2+ response through CRAC may contribute to the impaired CD8+ function.
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Affiliation(s)
- Vivien Jusztus
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
| | - Ghofrane Medyouni
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
| | - Adrienn Bagosi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
| | - Rudolf Lampé
- Department of Gynecology and Obstetrics, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (R.L.); (O.M.); (E.M.); (Z.T.K.)
| | - György Panyi
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
| | - Orsolya Matolay
- Department of Gynecology and Obstetrics, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (R.L.); (O.M.); (E.M.); (Z.T.K.)
| | - Eszter Maka
- Department of Gynecology and Obstetrics, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (R.L.); (O.M.); (E.M.); (Z.T.K.)
| | - Zoárd Tibor Krasznai
- Department of Gynecology and Obstetrics, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (R.L.); (O.M.); (E.M.); (Z.T.K.)
| | - Orsolya Vörös
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
| | - Péter Hajdu
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; (V.J.); (G.M.); (A.B.); (G.P.); (O.V.)
- Division of Dental Biochemistry, Department of Basic Medical Sciences, Faculty of Dentistry, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary
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3
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Silva BJDA, Krogstad PA, Teles RMB, Andrade PR, Rajfer J, Ferrini MG, Yang OO, Bloom BR, Modlin RL. IFN-γ-mediated control of SARS-CoV-2 infection through nitric oxide. Front Immunol 2023; 14:1284148. [PMID: 38162653 PMCID: PMC10755032 DOI: 10.3389/fimmu.2023.1284148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 11/30/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction The COVID-19 pandemic has highlighted the need to identify mechanisms of antiviral host defense against SARS-CoV-2. One such mediator is interferon-g (IFN-γ), which, when administered to infected patients, is reported to result in viral clearance and resolution of pulmonary symptoms. IFN-γ treatment of a human lung epithelial cell line triggered an antiviral activity against SARS-CoV-2, yet the mechanism for this antiviral response was not identified. Methods Given that IFN-γ has been shown to trigger antiviral activity via the generation of nitric oxide (NO), we investigated whether IFN-γ induction of antiviral activity against SARS-CoV-2 infection is dependent upon the generation of NO in human pulmonary epithelial cells. We treated the simian epithelial cell line Vero E6 and human pulmonary epithelial cell lines, including A549-ACE2, and Calu-3, with IFN-γ and observed the resulting induction of NO and its effects on SARS-CoV-2 replication. Pharmacological inhibition of inducible nitric oxide synthase (iNOS) was employed to assess the dependency on NO production. Additionally, the study examined the effect of interleukin-1b (IL-1β) on the IFN-g-induced NO production and its antiviral efficacy. Results Treatment of Vero E6 cells with IFN-γ resulted in a dose-responsive induction of NO and an inhibitory effect on SARS-CoV-2 replication. This antiviral activity was blocked by pharmacologic inhibition of iNOS. IFN-γ also triggered a NO-mediated antiviral activity in SARS-CoV-2 infected human lung epithelial cell lines A549-ACE2 and Calu-3. IL-1β enhanced IFN-γ induction of NO, but it had little effect on antiviral activity. Discussion Given that IFN-g has been shown to be produced by CD8+ T cells in the early response to SARS-CoV-2, our findings in human lung epithelial cell lines, of an IFN-γ-triggered, NO-dependent, links the adaptive immune response to an innate antiviral pathway in host defense against SARS-CoV-2. These results underscore the importance of IFN-γ and NO in the antiviral response and provide insights into potential therapeutic strategies for COVID-19.
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Affiliation(s)
- Bruno J. de Andrade Silva
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Paul A. Krogstad
- Department of Pediatrics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, CA, United States
| | - Rosane M. B. Teles
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Priscila R. Andrade
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
| | - Jacob Rajfer
- Department of Urology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Monica G. Ferrini
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Health and Life Sciences, Charles R. Drew University of Medicine and Science, Los Angeles, CA, United States
| | - Otto O. Yang
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Barry R. Bloom
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, United States
| | - Robert L. Modlin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California (UCLA), Los Angeles, CA, United States
- Department of Microbiology, Immunology and Molecular Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
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Padgett LE, Marcovecchio PM, Olingy CE, Araujo DJ, Steel K, Dinh HQ, Alimadadi A, Zhu YP, Meyer MA, Kiosses WB, Thomas GD, Hedrick CC. Nonclassical monocytes potentiate anti-tumoral CD8 + T cell responses in the lungs. Front Immunol 2023; 14:1101497. [PMID: 37426658 PMCID: PMC10325638 DOI: 10.3389/fimmu.2023.1101497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 05/15/2023] [Indexed: 07/11/2023] Open
Abstract
CD8+ T cells drive anti-cancer immunity in response to antigen-presenting cells such as dendritic cells and subpopulations of monocytes and macrophages. While CD14+ classical monocytes modulate CD8+ T cell responses, the contributions of CD16+ nonclassical monocytes to this process remain unclear. Herein we explored the role of nonclassical monocytes in CD8+ T cell activation by utilizing E2-deficient (E2-/-) mice that lack nonclassical monocytes. During early metastatic seeding, modeled by B16F10-OVA cancer cells injected into E2-/- mice, we noted lower CD8+ effector memory and effector T cell frequencies within the lungs as well as in lung-draining mediastinal lymph nodes in the E2-/- mice. Analysis of the myeloid compartment revealed that these changes were associated with depletion of MHC-IIloLy6Clo nonclassical monocytes within these tissues, with little change in other monocyte or macrophage populations. Additionally, nonclassical monocytes preferentially trafficked to primary tumor sites in the lungs, rather than to the lung-draining lymph nodes, and did not cross-present antigen to CD8+ T cells. Examination of the lung microenvironment in E2-/- mice revealed reduced CCL21 expression in endothelial cells, which is chemokine involved in T cell trafficking. Our results highlight the previously unappreciated importance of nonclassical monocytes in shaping the tumor microenvironment via CCL21 production and CD8+ T cell recruitment.
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Affiliation(s)
- Lindsey E. Padgett
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Paola M. Marcovecchio
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Claire E. Olingy
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Daniel J. Araujo
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Kathleen Steel
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Huy Q. Dinh
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Ahmad Alimadadi
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Yanfang Peipei Zhu
- Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, CA, United States
| | - Melissa A. Meyer
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - William B. Kiosses
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Graham D. Thomas
- Division of Inflammation Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, United States
| | - Catherine C. Hedrick
- Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, CA, United States
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Mardanpour K, Rahbar M, Mardanpour S, Mardanpour N, Rezaei M. CD8+ T-cell lymphocytes infiltration predict clinical outcomes in Wilms' tumor. Tumour Biol 2020; 42:1010428320975976. [PMID: 33283684 DOI: 10.1177/1010428320975976] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The abundance and location of CD8+ tumor-infiltrating lymphocytes demonstrate important facets of the anticancer immune response. CD8-expressing lymphocytes have been used in immunotherapy for multiple cancers. This study aims to determine the association between the abundance and localization of CD8+ tumor-infiltrating lymphocytes and clinical outcomes of Wilms' tumor. This retrospective study employed 42 pediatric patients diagnosed with Wilms' tumor. CD8+ tumor-infiltrating lymphocyte counts were calculated based on the mean percentage of stroma occupied by CD8+ lymphocytes at the center and the invasive border of the tumor using immunohistochemistry. CD8+ tumor-infiltrating lymphocyte counts were significantly higher in the center and the invasive border of the early-stage tumor samples. CD8+ tumor-infiltrating lymphocytes in the invasive border and tumor center positively correlated with tumor invasion, regional lymph node invasion, histological type, metastasis, and stage of the tumor. A high CD8+ tumor-infiltrating lymphocyte scores at the invasive margin of the tumor correlated with low tumor recurrence. Low CD8+ tumor-infiltrating lymphocyte scores in the two tumor regions correlated with poor prognosis and shorter disease-free survival. Overall, these findings show that patients with high CD8+ tumor-infiltrating lymphocytes are associated with better clinical outcomes. Therefore, measuring the abundance of CD8+ tumor-infiltrating lymphocytes may be useful in predicting response to cancer immunotherapies.
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Affiliation(s)
| | - Mahtab Rahbar
- Iran Medical Science University, Tehran, Iran, Islamic Republic of
| | | | | | - Mansour Rezaei
- Kermanshah Medical Science University, Kermanshah, Iran, Islamic Republic of
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Naseri S, Steiniche T, Bæhr Georgsen J, Thomsen R, Ladekarl M, Heje M, Engberg Damsgaard T, Bønnelykke-Behrndtz ML. Tumor Ulceration, Reduced Infiltration of CD8-Lymphocytes, High Neutrophil-to-CD8-Lymphocyte Ratio and Absence of MC Virus are Negative Prognostic Markers for Patients with Merkel Cell Carcinoma. Cancers (Basel) 2020; 12:cancers12040888. [PMID: 32268526 PMCID: PMC7226107 DOI: 10.3390/cancers12040888] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/02/2020] [Accepted: 04/04/2020] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Merkel cell carcinoma (MCC) is caused by the Merkel cell polyomavirus and UV radiation. Understanding of the underlying biology is limited, but identification of prognostic markers may lead to better prognostic stratification for the patients. (2) Methods: Ninety patients diagnosed with MCC (1996–2012) were included. Virus status was estimated by polymerase chain reaction (qPCR) and immunohistochemistry (IHC). Ulceration status, PD-L1, cd66b neutrophils, cd8 lymphocytes and biomarkers of vascularization (cd34 endothelial cells) and migration (e-cadherin) were estimated by IHC and analyzed with digital pathology. (3) Results: Virus was present in 47% of patient samples and correlated with lower E-cadherin expression (p = 0.0005), lower neutrophil-to-CD8 lymphocyte ratio (N:CD8 ratio) (p = 0.02) and increased PD-L1 expression (p = 0.03). Ulceration was associated with absence of virus (p = 0.03), increased neutrophil infiltration (p < 0.0001) and reduced CD8 lymphocyte infiltration (p = 0.04). In multivariate analysis, presence of virus (p = 0.01), ulceration (p = 0.05) and increased CD8 lymphocyte infiltration (p = 0.001) showed independent prognostic impacts on MCC-specific survival. (3) Conclusions: In this study, we found that a high N:CD8 ratio, ulceration, virus-negative status and absence of CD8 lymphocytes are negative prognostic markers. Accurate prognostic stratification of the patients may be important in the clinical setting for determination of adjuvant treatment.
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Affiliation(s)
- Simon Naseri
- Department of Plastic Surgery, Aalborg University Hospital, 9000 Aalborg, Denmark
- Correspondence:
| | - Torben Steiniche
- Department of Pathology, Aarhus University Hospital, 8200 Aarhus, Denmark; (T.S.); (J.B.G.)
| | - Jeanette Bæhr Georgsen
- Department of Pathology, Aarhus University Hospital, 8200 Aarhus, Denmark; (T.S.); (J.B.G.)
| | - Rune Thomsen
- Department of Biomedicine, Aarhus University, 8200 Aarhus, Denmark;
| | - Morten Ladekarl
- Department of Oncology, Clinical Cancer Research Center, Aalborg University Hospital, 9000 Aalborg, Denmark;
| | - Martin Heje
- Department of Plastic Surgery, Vejle Hospital, 7100 Vejle, Denmark;
| | - Tine Engberg Damsgaard
- Department of Plastic Surgery and Burns Treatment, Rigshospitalet, 2100 Copenhagen, Denmark;
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Urbansky A, Lenshof A, Dykes J, Laurell T, Scheding S. Affinity-Bead-Mediated Enrichment of CD8+ Lymphocytes from Peripheral Blood Progenitor Cell Products Using Acoustophoresis. Micromachines (Basel) 2016; 7:E101. [PMID: 30404275 DOI: 10.3390/mi7060101] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/31/2016] [Accepted: 06/02/2016] [Indexed: 02/08/2023]
Abstract
Acoustophoresis is a technique that applies ultrasonic standing wave forces in a microchannel to sort cells depending on their physical properties in relation to the surrounding media. Cell handling and separation for research and clinical applications aims to efficiently separate specific cell populations. Here, we investigated the sorting of CD8 lymphocytes from peripheral blood progenitor cell (PBPC) products by affinity-bead-mediated acoustophoresis. PBPC samples were obtained from healthy donors (n = 4) and patients (n = 18). Mononuclear cells were labeled with anti-CD8-coated magnetic beads and sorted on an acoustophoretic microfluidic device and by standard magnetic cell sorting as a reference method. CD8 lymphocytes were acoustically sorted with a mean purity of 91% ± 8% and a median separation efficiency of 63% (range 15.1%⁻90.5%) as compared to magnetic sorting (purity 91% ± 14%, recovery 29% (range 5.1%⁻47.3%)). The viability as well as the proliferation capacity of sorted lymphocytes in the target fraction were unimpaired and, furthermore, hematopoietic progenitor cell assay revealed a preserved clonogenic capacity post-sorting. Bead-mediated acoustophoresis can, therefore, be utilized to efficiently sort less frequent CD8+ lymphocytes from PBPC products in a continuous flow mode while maintaining cell viability and functional capacity of both target and non-target fractions.
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Abstract
Infiltration of effector CD8 T cells plays a major role in allograft rejection, and increases in memory and terminally differentiated effector memory CD8 T cells are associated with long-term allograft dysfunction. Alternatively, CD8 regulatory T cells suppress the inflammatory responses of effector lymphocytes and induce allograft tolerance in animal models. Recently, there has been a renewed interest in the field of immunometabolics and its important role in CD8 function and differentiation. The purpose of this review is to highlight the key metabolic pathways involved in CD8 T cells and to discuss how manipulating these metabolic pathways could lead to new immunosuppressive strategies for the transplantation field.
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Affiliation(s)
- Michelle Yap
- UMR 1064, INSERM , Nantes , France ; Faculté de Médecine, Université de Nantes , Nantes , France
| | - Sophie Brouard
- UMR 1064, INSERM , Nantes , France ; CHU de Nantes, ITUN , Nantes , France ; CIC Biothérapie , Nantes , France ; CHU Nantes, CRB , Nantes , France
| | - Claire Pecqueur
- Faculté de Médecine, Université de Nantes , Nantes , France ; UMR 892, INSERM , Nantes , France
| | - Nicolas Degauque
- UMR 1064, INSERM , Nantes , France ; CHU de Nantes, ITUN , Nantes , France
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Laing ST, Griffey SM, Moreno ME, Stoddart CA. CD8-positive lymphocytes in graft-versus-host disease of humanized NOD.Cg-Prkdc(scid)Il2rg(tm1Wjl)/SzJ mice. J Comp Pathol 2015; 152:238-42. [PMID: 25670669 DOI: 10.1016/j.jcpa.2014.12.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 11/19/2014] [Accepted: 12/19/2014] [Indexed: 12/11/2022]
Abstract
Immunocompromised mice that can support a human immune system are an increasingly important model for the investigation of haemopoietic stem/progenitor cell (HSPC) development and human infectious disease. NOD-SCID IL-2Rγ(-/-) (NSG) mice engrafted with human fetal liver and thymus prior to HSPC engraftment, commonly known as NSG-bone marrow-liver-thymus (NSG-hu-BLT) mice, are one such model and have robust reconstitution of human leucocytes within the peripheral blood and tissues. Four NSG-hu-BLT mice were submitted for diagnostic necropsy examination following the development of alopecia, pruritus and lethargy after HSPC engraftment. Histopathology revealed multifocal to coalescing single keratinocyte cell death in the epidermis and follicles with dermatitis and mild dermal fibrosis. Single-cell hepatocyte cell death was present in three cases, with various degrees of portal fibrosis. In the skin and liver, cell death was associated with lymphocytes that reacted with anti-human CD45, CD3 and CD8 antibodies, consistent with a diagnosis of graft-versus-host disease (GvHD). This study expands on recently reported microscopical features of GvHD in NSG-hu-BLT mice and suggests a role for CD8(+) T lymphocytes in the progression of the disease. NSG-hu-BLT mice represent an excellent model of GvHD, but its prevalence may compromise their use in other fields of biomedical research.
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Affiliation(s)
- S T Laing
- Comparative Pathology Laboratory, University of California at Davis, Davis, CA, USA
| | - S M Griffey
- Comparative Pathology Laboratory, University of California at Davis, Davis, CA, USA.
| | - M E Moreno
- Division of Experimental Medicine, San Francisco General Hospital, University of California at San Francisco, CA, USA
| | - C A Stoddart
- Division of Experimental Medicine, San Francisco General Hospital, University of California at San Francisco, CA, USA
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Abstract
Hepatitis B virus (HBV) is a major cause of acute and chronic liver inflammation worldwide. The immune response against the virus represents a key factor in determining infection outcome, in terms of both viral clearance and the perpetuation of liver damage. Significant advances have recently been achieved regarding the functions of antiviral CD8+ T cells, leading to a better understanding of their abnormalities during chronic infection as well as the pathways to be manipulated to reverse the immune impairment of chronic infection. In this review, we aimed to analyse the patterns of adaptive immunity that develop during acute infection and the profiles in chronic infection. In addition to CD8+ T cells, which are the best-described subset to date, we reviewed and commented on the direct and indirect roles of CD4+ T cells and B cells.
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Affiliation(s)
- E Loggi
- Institute for Research in Biomedicine, Bellinzona, Switzerland; Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
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11
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Affiliation(s)
- Eddie Fernando Candido Murta
- Research Institute of Oncology/Discipline of Gynecology and Obstetrics, Federal University of Triângulo Mineiro, Av. Getúlio Guarita, s/n, 38025-440 Bairro Abadia, Uberaba-MG, Brazil.
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Lescure FX, Moulignier A, Savatovsky J, Amiel C, Carcelain G, Molina JM, Gallien S, Pacanovski J, Pialoux G, Adle-Biassette H, Gray F. CD8 encephalitis in HIV-infected patients receiving cART: a treatable entity. Clin Infect Dis 2013; 57:101-8. [PMID: 23515205 DOI: 10.1093/cid/cit175] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Despite its overall efficacy, combined antiretroviral therapy (cART) has failed to control human immunodeficiency virus (HIV) infection of the central nervous system (CNS). New acute and chronic neurological complications continue to be reported. METHODS We conducted a retrospective study of 14 HIV-infected patients with documented encephalitis, which was initially attributed to an undetermined origin. Brain magnetic resonance imaging (MRI) uniformly revealed unusual, multiple linear gadolinium-enhanced perivascular lesions. RESULTS All patients had manifested acute or subacute neurological symptoms; the brain MRIs indicating diffuse brain damage. The mean duration of HIV infection was approximately 10 years, and 8 patients were immunovirologically stable. Cerebrospinal fluid abnormalities with mildly elevated protein and pleocytosis with >90% lymphocytes, predominantly CD8, were found in all but 1 patient. The mean cerebral spinal fluid HIV load was 5949 copies/mL. Six patients reported a minor infection a few days prior to neurological symptoms, 2 patients presented criteria for the immune reconstitution inflammatory syndrome of the CNS, 2 were in virological escape, and 1 developed encephalitis after interruption of cART. Brain biopsies revealed inflammatory encephalitis associated with astrocytic and microglial activation as well as massive perivascular infiltration by polyclonal CD8(+) lymphocytes. All patients had been treated with glucocorticosteroids. The long-term therapeutic response varied from excellent, with no sequalae (n = 5), to moderate, with cognitive disorders (n = 4). The mean survival time was 8 years; however, 5 patients died within 13 months of initiation of treatment. CONCLUSIONS CD8 encephalitis in HIV-infected patients receiving cART is a clinical entity that should be added to the list of HIV complications.
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