Article
Oncology
Michael C. Brown, Georgia M. Beasley, Zachary P. McKay, Yuanfan Yang, Annick Desjardins, Dina M. Randazzo, Daniel Landi, David M. Ashley, Darell D. Bigner, Smita K. Nair, Matthias Gromeier
Summary: This study reveals the contribution of pre-existing anti-polio immunity to the effectiveness of polio virotherapy for cancer treatment. Childhood vaccines such as polio and tetanus can enhance antitumor immune responses, particularly by activating CD4(+) T cells and eosinophils.
JOURNAL FOR IMMUNOTHERAPY OF CANCER
(2023)
Article
Biology
Severine Menoret, Laurent Tesson, Severine Remy, Victor Gourain, Celine Serazin, Claire Usal, Aude Guiffes, Vanessa Chenouard, Laure-Helene Ouisse, Malika Gantier, Jean-Marie Heslan, Cynthia Fourgeux, Jeremie Poschmann, Carole Guillonneau, Ignacio Anegon
Summary: In this study, a Foxp3-EGFP rat transgenic line was created to genetically tag CD4(+) and CD8(+) FOXP3(+) regulatory T cells. CD4(+)EGFP(+) Treg were found to be 5-10 times more frequent than CD8(+)EGFP(+) Treg. RNAseq analysis provided insights into the transcriptome of CD8(+) Treg, allowing for a better understanding of their phenotype and function.
Article
Immunology
Shi-Peng Li, Jin-Ming Zhang, Xiao-Jie Chen, Guang-Peng Zhou, Jie Sun, Bin Cui, Liu-Xin Zhou, Hai-Ming Zhang, Wei-Tao Que, Li-Ying Sun, Zhi-Jun Zhu
Summary: DPT cells are increased in liver transplant patients, especially in rejection cases. These cells show contiguity with Treg cells and their exhaustion is enhanced by increased PD-1 expression. These findings suggest that DPT cells may play a role in immune tolerance and could be targeted for preventing liver transplant rejection.
INTERNATIONAL IMMUNOPHARMACOLOGY
(2022)
Article
Biology
Cilia R. Pothast, Romy C. Dijkland, Melissa Thaler, Renate S. Hagedoorn, Michel G. D. Kester, Anne K. Wouters, Pieter S. Hiemstra, Martijn J. van Hemert, Stephanie Gras, J. H. Frederik Falkenburg, Mirjam H. M. Heemskerk
Summary: CMV-specific T cells cross react with SARS-CoV-2, despite low sequence homology between the two viruses, and may contribute to the pre-existing immunity against SARS-CoV-2.
Article
Biology
Benedetta De Ponte Conti, Annarita Miluzio, Fabio Grassi, Sergio Abrignani, Stefano Biffo, Sara Ricciardi
Summary: The systematic analysis on translation rate of tumor-infiltrating lymphocytes (TILs) in humans and mice shows that high translation levels are associated with mTORC1 activation and low levels are correlated with hypoxia. CD8 translating cells exhibit a cytotoxic phenotype, while CD4 translating cells are mainly regulatory T cells with immunosuppressive functions.
Article
Immunology
Rui Dai, Xiaopei Huang, Yiping Yang
Summary: This study demonstrates the critical role of gamma delta T cells in promoting the CD8(+) T cell response to VV infection. Gamma delta T cells are able to present viral antigens and activate CD8(+) T cells, with MyD88 signaling playing a key role in this process. Understanding the regulation of adaptive T cell response by gamma delta T cells may provide insight for the development of more effective vaccine strategies.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Medicine, General & Internal
Tim K. Tsang, Kwok-Tai Lam, Yinping Liu, Vicky J. Fang, Xiaofeng Mu, Nancy H. L. Leung, J. S. Malik Peiris, Gabriel M. Leung, Benjamin J. Cowling, Wenwei Tu
Summary: The study found that T cell response, especially CD4 T cell response, is associated with homosubtypic and cross-strain protection against influenza infections. This protection is independent of the protection associated with HAI titer.
Article
Immunology
Yana Hackler, Frank Siebenhaar, Max Loehning, Marcus Maurer, Melba Munoz
Summary: MCs play a critical role in the activation and expansion of virus-specific CD8(+) T cells through proper dendritic cell (DC) activation, and are essential for antiviral functions during viral infections. Depletion of MCs impairs CD8(+) T cell effector phenotype, antiviral cytokine production, and DC activation, resulting in increased viral loads and reduced type-I interferon levels.
FRONTIERS IN IMMUNOLOGY
(2021)
Review
Biochemistry & Molecular Biology
Magdalena Hagen, Luca Pangrazzi, Lourdes Rocamora-Reverte, Birgit Weinberger
Summary: The expression of CD4 and CD8 co-receptors defines two distinct T cell populations with specialized functions. However, a paradoxical population of CD4(+)CD8(+) double-positive (DP) T cells challenging this paradigm has been found in the peripheral blood. This subset has unique functions and exhibits memory-like features. Strategies to better characterize the role of this minor T cell subset in regulating immune responses are necessary.
Review
Immunology
Jason Cheung, Beata Zahorowska, Michael Suranyi, Jeffrey K. W. Wong, Jason Diep, Stephen T. T. Spicer, Nirupama D. D. Verma, Suzanne J. Hodgkinson, Bruce M. M. Hall
Summary: The immune response to an allograft can activate lymphocytes that cause rejection. The activation of T regulatory cells can reduce allograft rejection and induce immune tolerance. Activated T regulatory cells can be distinguished by various markers. A more detailed characterization of these cells may help reduce non-specific immunosuppression.
FRONTIERS IN IMMUNOLOGY
(2022)
Article
Multidisciplinary Sciences
Seon-Hee Kim, Eunjung Cho, Yu Kim, Chungyong Han, Beom K. Choi, Byoung S. Kwon
Summary: The study demonstrates that post-conditioning treatment with anti-CD4 can enhance the anti-tumor efficacy of adoptive T cell therapy (ACT) by promoting the expansion of IL-18R alpha(hi) CD8(+) T cells. This combination treatment accelerates proliferation and differentiation of tumor-reactive CD8(+) T cells and improves tumor suppression and host survival. The enrichment of polyfunctional IL-18R alpha(hi) CD8(+) T cells plays a key role in the induced tumor suppression, mediated by IL-18 signaling and TCR-MHC I interaction.
NATURE COMMUNICATIONS
(2021)
Review
Cell Biology
Young Min Son, Jie Sun
Summary: This article discusses the importance of memory CD8 T and B cells in protecting respiratory mucosa from secondary microbial invasion, with a focus on the role of tissue-resident helper T cell populations in this process.
Article
Multidisciplinary Sciences
Pawan K. Gupta, Jennifer B. Allocco, Jane M. Fraipont, Michelle L. McKeague, Peter Wang, Michael S. Andrade, Christine McIntosh, Luqiu Chen, Ying Wang, Yan Li, Jorge Andrade, Jose R. Conejo-Garcia, Anita S. Chong, Maria-Luisa Alegre
Summary: This study investigates the susceptibility of Tconvs to Treg suppression during tolerance induction in transplantation. The findings suggest that transplantation tolerance is associated with an increased sensitivity of alloreactive Tconvs to Treg suppression, which is regulated by the expression of the transcription factor Satb1. Targeting Satb1 could potentially be a strategy to improve transplant outcomes by modulating Treg-sparing immunosuppressive therapies.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Immunology
Tiago R. Matos, Masahiro Hirakawa, Ana C. Alho, Lars Neleman, Luis Graca, Jerome Ritz
Summary: CD4(+) Regulatory T cells play a critical role in immune homeostasis, but their heterogeneity in different populations including newborns, healthy adults, and patients after allogeneic hematopoietic stem cell transplantation with or without chronic graft-versus-host disease has been compared. The study found that Treg heterogeneity is higher in adults and gradually increases in the first two years post-transplant, while patients with chronic graft-versus-host disease have significantly fewer distinct Treg subpopulations.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Cell Biology
Vanesa Garrido-Rodriguez, Ines Herrero-Fernandez, Maria Jose Castro, Ana Castillo, Isaac Rosado-Sanchez, Maria Isabel Galva, Raquel Ramos, Israel Olivas-Martinez, Angel Bulnes-Ramos, Julio Canizares, Manuel Leal, Yolanda Maria Pacheco
Summary: The CD4/CD8 T-cell ratio is a useful marker for evaluating immune features in older individuals, showing differences in thymic output and immune profiles that can affect health status.