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Detection of Circulating Tumor DNA in Liquid Biopsy: Current Techniques and Potential Applications in Melanoma.
Int J Mol Sci
January 2025
August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Rosselló 149, 08036 Barcelona, Spain.
The treatment landscape for advanced melanoma has transformed significantly with the advent of BRAF and MEK inhibitors (BRAF/MEKi) targeting V600 mutations, as well as immune checkpoint inhibitors (ICI) like anti-PD-1 monotherapy or its combinations with anti-CTLA-4 or anti-LAG-3. Despite that, many patients still do not benefit from these treatments at all or develop resistance mechanisms. Therefore, prognostic and predictive biomarkers are needed to identify patients who should switch or escalate their treatment strategies or initiate an intensive follow-up.
View Article and Find Full Text PDFEnhanced co-expression of TIGIT and PD-1 on γδ T cells correlates with clinical features and laboratory parameters in patients with primary Sjögren's syndrome.
Clin Rheumatol
January 2025
Jiangsu Institute of Clinical Immunology, the First Affiliated Hospital of Soochow University, Suzhou, 215021, China.
Objectives: The research aimed to assess the proportions of Gamma delta (γδ) T cells and the expression levels of CD226, ICOS, CD40L, OX40, TIGIT, LAG-3, Tim-3, and PD-1 on γδ T cells in the peripheral blood of patients diagnosed with primary Sjögren's syndrome (pSS), and to evaluate the clinical significance of these findings.
Methods: Utilizing flow cytometry, we investigated the proportion of γδ T cells and the expression of CD226, ICOS, CD40L, OX40, TIGIT, LAG-3, PD-1, and Tim-3 on γδ T cells in 37 patients diagnosed with pSS and 28 healthy controls (HC). Moreover, we explored the potential associations between the proportion of γδ T cells, TIGIT + γδ T cells, PD-1 + γδ T cells, and TIGIT + PD-1 + γδ T cells with clinical symptoms and laboratory parameters.
Neoadjuvant anti-PD-1-based immunotherapy: evolving a new standard of care.
J Immunother Cancer
January 2025
The Bloomberg~Kimmel Institute for Cancer Immunotherapy at Johns Hopkins, Baltimore, Maryland, USA.
Neoadjuvant (presurgical) anti-programmed cell death protein-1 (PD-1)-based immunotherapy as a new approach to cancer treatment has been developing on an accelerated trajectory since the seminal clinical trial results from studies in lung cancer and melanoma were published in 2018. Groundbreaking regulatory approvals in triple-negative breast cancer, non-small cell lung cancer and melanoma will certainly be followed by additional approvals in other disease indications, as clinical and basic research are burgeoning globally in hundreds of clinical trials across dozens of cancer types. As this field is evolving, it is addressing gaps in our understanding of biological mechanisms underlying PD-1 pathway blockade and their synergy with other antineoplastic drugs, probing mechanisms of response and resistance to neoadjuvant immunotherapy, optimizing efficacious clinical strategies, and analyzing commonalities and differences across cancer types.
View Article and Find Full Text PDFAnti-correlation of KLRG1 and PD-1 expression in human tumor CD8 T cells.
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 PDFEmerging roles of checkpoint molecules on B cells.
Immunol Med
January 2025
Department of Rheumatology, Institute of Medicine, University of Tsukuba, Ibaraki, Japan.
Immune checkpoint molecules, including both co-inhibitory molecules and co-stimulatory molecules, are known to play critical roles in regulating T-cell responses. During the last decades, immunotherapies targeting these molecules (such as programmed cell death 1 (PD-1), and lymphocyte activation gene 3 (LAG-3)) have provided clinical benefits in many cancers. It is becoming apparent that not only T cells, but also B cells have a capacity to express some checkpoint molecules.
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