Immune cells are known to engage in pathogen defense. However, emerging research has revealed additional roles for immune cells, which are independent of their function in the immune response. Here, we underscore the ability of cells outside of the adaptive immune system to respond to recurring infections through the lens of evolution and cellular memory. With this in mind, we then discuss the bidirectional crosstalk between the immune cells and stem cells and present examples where these interactions regulate tissue repair and regeneration. We conclude by suggesting that comprehensive analyses of the immune system may enable biomedical applications in stem cell biology and regenerative medicine.
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http://dx.doi.org/10.1242/dev.199903 | DOI Listing |
Oncotarget
January 2025
Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Recently, combination checkpoint therapy of cancer has been recognized as producing additive as opposed to synergistic benefit due in part to positively correlated effects. The potential for uncorrelated or negatively correlated therapies to produce true synergistic benefits has been noted. Whereas the inhibitory receptors PD-1, CTLA-4, TIM-3, LAG-3, and TIGIT have been collectively characterized as exhaustion receptors, another inhibitory receptor KLRG1 was historically characterized as a senescent receptor and received relatively little attention as a potential checkpoint inhibitor target.
View Article and Find Full Text PDFGenomics Proteomics Bioinformatics
January 2025
Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M University, Houston, TX 77030, USA.
Tumor-specific antigens, also known as neoantigens, have potential utility in anti-cancer immunotherapy, including immune checkpoint blockade (ICB), neoantigen-specific T cell receptor-engineered T (TCR-T), chimeric antigen receptor T (CAR-T), and therapeutic cancer vaccines (TCVs). After recognizing presented neoantigens, the immune system becomes activated and triggers the death of tumor cells. Neoantigens may be derived from multiple origins, including somatic mutations (single nucleotide variants, insertion/deletions, and gene fusions), circular RNAs, alternative splicing, RNA editing, and polymorphic microbiome.
View Article and Find Full Text PDFJ Infect Dev Ctries
December 2024
Department of Immunology, School of Medicine and Dr. Jose Eleuterio Gonzalez University Hospital, Universidad Autónoma de Nuevo León, Monterrey, Mexico.
Co-inhibitory molecules, such as cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed cell death protein 1 (PD-1), known as immune checkpoints, regulate the activity of T and myeloid cells during chronic viral infections and are well-established for their roles in cancer therapy. However, their involvement in chronic bacterial infections, particularly those caused by pathogens endemic to developing countries, such as Mycobacterium tuberculosis (Mtb), remains incompletely understood. Cytokine microenvironment determines the expression of co-inhibitory molecules in tuberculosis: Results indicate that the cytokine IL-12, in the presence of Mtb antigens, can enhance the expression of co-inhibitory molecules while preserving the effector and memory phenotypes of CD4+ T cells.
View Article and Find Full Text PDFNeoplasma
December 2024
Department of Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuchang, Wuhan, Hubei, China.
Many lines of evidence suggest that circular RNAs (circRNAs) are closely associated with the occurrence and progression of colon cancer. The objective of this study was to investigate the regulatory effects and mechanisms of circ_0075829 on ferroptosis and immune escape in colon cancer. We utilized colon cancer cell lines and a xenograft mouse model to analyze the function of circ_0075829 in vitro and in vivo.
View Article and Find Full Text PDFNeoplasma
December 2024
Department of Breast Center, The Fourth Hospital of Hebei Medical University, Shijiazhuang, China.
Triple-negative breast cancer (TNBC) is a highly aggressive subtype of breast malignancy. Although some patients benefit from immune checkpoint therapy, current treatment methods rely mainly on chemotherapy. It is imperative to develop predictors of efficacy and identify individuals who will be sensitive to particular treatment regimens.
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