98%
921
2 minutes
20
CD8 T lymphocytes are classically viewed as cytotoxic T cells. Whether human CD8 T cells can, in parallel, induce a tissue regeneration program is poorly understood. Here, antigen-specific assay systems revealed that human CD8 T cells not only mediated cytotoxicity but also promoted tissue remodeling. Activated CD8 T cells could produce the epidermal growth factor receptor (EGFR)-ligand amphiregulin (AREG) and sensitize epithelial cells for enhanced regeneration potential. Blocking the EGFR or the effector cytokines IFN-γ and TNF could inhibit tissue remodeling. This regenerative program enhanced tumor spheroid and stem cell-mediated organoid growth. Using single-cell gene expression analysis, we identified an AREG+, tissue-resident CD8 T cell population in skin and adipose tissue from patients undergoing abdominal wall or abdominoplasty surgery. These tissue-resident CD8 T cells showed a strong TCR clonal relation to blood PD1+TIGIT+ CD8 T cells with tissue remodeling abilities. These findings may help to understand the complex CD8 biology in tumors and could become relevant for the design of therapeutic T cell products.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10791561 | PMC |
http://dx.doi.org/10.1084/jem.20230488 | DOI Listing |
Haematologica
September 2025
Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD,.
Immunotherapies, including cell therapies, are effective anti-cancer agents. However, cellular product persistence can be limiting with short functional duration of activity contributing to disease relapse. A variety of manufacturing protocols are used to generate therapeutic engineered T-cells; these differ in techniques used for T-cell isolation, activation, genetic modification, and other methodology.
View Article and Find Full Text PDFNanoscale Horiz
September 2025
Programmable Biomaterials Laboratory, Institute of Materials, Interfaculty Bioengineering Institute, School of Engineering, Ecole Polytechnique Fédérale Lausanne, Lausanne, 1015, Switzerland.
The nanoscale spatial arrangement of T cell receptor (TCR) ligands critically influences their activation potential in CD8 T cells, yet a comprehensive understanding of the molecular landscape induced by engagement with native peptide-MHC class I (pMHC-I) remains incomplete. Using DNA origami nanomaterials, we precisely organize pMHC-I molecules into defined spatial configurations to systematically investigate the roles of valencies, inter-ligand spacings, geometric patterns, and molecular flexibility in regulating T cell function. We find that reducing the inter-ligand spacing to ∼7.
View Article and Find Full Text PDFMol Ther
September 2025
Center of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China; Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China. Electronic address:
The reduction of TCF-1 during CD8 T cell exhaustion leads to attenuated antitumor activity and diminished responsiveness to immune checkpoint inhibitors. However, how TCF-1 is downregulated remains unclear. Here, we showed that during CD8 T cell exhaustion, lnc-SUMF2-8, induced by transcription factor TOX, can bind to cytosolic TCF-1, and direct it to the lysosome for degradation.
View Article and Find Full Text PDFJ Cachexia Sarcopenia Muscle
October 2025
Department of Surgery, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands.
Background: Body composition alterations such as skeletal muscle (SM) loss in cancer patients are associated with poor survival. In turn, immune cell-driven pathways have been linked to muscle wasting. We aimed to investigate the relationship between body composition, tumour-infiltrating lymphocytes and survival in patients with advanced lung cancer.
View Article and Find Full Text PDFInfluenza Other Respir Viruses
September 2025
Department of Respiratory, Children's Hospital of Nanjing Medical University, Nanjing, China.
Respiratory syncytial virus (RSV) is one of the leading causes of severe respiratory diseases in children, especially in infants. The immune responses induced by RSV infection are a fairly complex process that can contribute significantly to disease severity. Despite decades of research on RSV, many immune mechanisms remain to be explored.
View Article and Find Full Text PDF