T lymphocytes (T cells) are major players of the adaptive immune response. Naive T cells are primed in the presence of cytokines, leading to polarization into distinct T-cell subsets with specific functions. These subsets are classified based on their T-cell receptor profile, expression of transcription factors, surface cytokine and chemokine receptors, and their cytokine production, which together determine their specific function. This review provides an overview of the various T-cell subsets and their function in several inflammatory skin disorders ranging from allergic inflammation to skin tumors. Moreover, we highlight similarities of T-cell responses across different skin disorders, demonstrating the presence of similar and opposing functions for the different T-cell subsets. Finally, we discuss the effects of currently available and promising therapeutic approaches to harness T cells in inflammatory skin diseases for which efficacy next to unwanted side effects provide new insights into the pathophysiology of skin disorders.
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http://dx.doi.org/10.1111/all.15104 | DOI Listing |
Proc Natl Acad Sci U S A
January 2025
Department of Immunology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030.
The effects of T cell differentiation arising from immune checkpoint inhibition targeting cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) and programmed cell death protein 1 (PD-1) on the immunological memory response remain unclear. Our investigation into the effects of anti-CTLA-4 and anti-PD-1 on memory T cell formation in mice reveals that memory T cells generated by anti-CTLA-4 exhibit greater expansion, cytokine production, and antitumor activity than those from anti-PD-1. Notably, anti-CTLA-4 preserves more T cell factor-1 (TCF-1)+ T cells during priming, while anti-PD-1 leads to more thymocyte selection-associated high mobility group box (TOX)+ T cells.
View Article and Find Full Text PDFAllergol Immunopathol (Madr)
January 2025
Department of Geriatric Medicine, Qinghai University Affiliated Hospital, Xining, Qinghai, China.
The main goal of this investigation is to find out how solute carrier family 27 member 3 (SLC27A3) is expressed in the lung tissue of mice with chronic obstructive pulmonary disease (COPD), and how it relates to lung function. A model of COPD was established by exposing organisms to cigarette smoke, followed by investigating the role of SLC27A3 in COPD through experiments conducted both in living organisms and in laboratory settings. Knockout mice lacking SLC27A3 were produced through siRNA transfection to investigate lung function and inflammatory response, using methods such as hematoxylin-eosin staining and enzyme-linked immunosorbent assay.
View Article and Find Full Text PDFJCI Insight
January 2025
Center for Cancer Immunology and Cutaneous Biology Research Center, Department of Dermatology and Krantz Family Center for Cancer Research, Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
CD4+ T cells contribute to antitumor immunity and are implicated in the efficacy of cancer immunotherapies. In particular, CD4+ T helper 2 (Th2) cells were recently found to block spontaneous breast carcinogenesis. However, the antitumor potential of Th2 cells in targeting established breast cancer remains uncertain.
View Article and Find Full Text PDFHistol Histopathol
December 2024
Laboratory of Anatomy, Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan.
Sex hormones regulate gut function and mucosal immunity; however, their specific effects on the mucosa-associated lymphoid tissue (MALT) in the rectum of mammals remain unclear. Here, we aimed to investigate the influence of sex on MALT in the rectum of mammals by focusing on the rectal mucosa-associated lymphoid tissues (RMALTs) of C57BL/6NCrSIc mice. Histological analysis revealed that RMALTs were predominantly located in the lamina propria and submucosa of the rectal mucosa, with a significant sex-related difference in the distance from the anorectal junction to the first appearance of the RMALT.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Good T Cells, Seoul, Mapo-gu, Korea, Republic of (South); YONSEI University, Seoul, Seodaemun-gu, Korea, Republic of (South).
Background: Neurodegenerative diseases, including Alzheimer's disease (AD), have been long thought to be independent of the peripheral immune system, but their pathogenesis status is functionally influenced by various T cell subsets in the periphery. Especially Treg cells are emerging as an important dynamic population in the brain, but the detailed immunological molecular and cellular processes are poorly characterized METHOD: We reported that the cell surface protein Lrig1 is enriched in Treg cells and is an essential regulator of the functions of Treg cells in vitro and in vivo. To evaluate the functional importance of Treg cells in AD pathogenesis, the modulating mAb specific to Lrig1 (GTC 310-01) via intravenous injection route was administered into 5xFAD or 6xTg mice, the genetic mouse model of AD, and the various AD symptoms were investigated.
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