The mechanisms of early activation of natural killers were studied in volunteers of different athletic qualification. The initial levels of expression of KIR2DL2, PRF1, and GZMB genes regulating the functions of natural killer differ in athletes and untrained subjects. Moderate exercise stimulates transcription activities of these genes. In athletes, the expression increases more intensely than in controls. Stimulation of inhibitory (KIR2DL3) and activation (KIR2DS2) receptors was revealed. This indicated nonspecific stimulation of natural killers, probably mediated by an increase in serum concentration of heat shock protein with a molecular weight of 70 kDa.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s10517-010-1045-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Stroma-derived Dickkopf-1 contributes to the suppression of NK cell cytotoxicity in breast cancer.
Nat Commun
January 2025
Department of Orthopaedic Surgery, Washington University School of Medicine, St. Louis, MO, USA.
Mechanisms related to tumor evasion from NK cell-mediated immune surveillance remain enigmatic. Dickkopf-1 (DKK1) is a Wnt/β-catenin inhibitor, whose levels correlate with breast cancer progression. We find DKK1 to be expressed by tumor cells and cancer-associated fibroblasts (CAFs) in patient samples and orthotopic breast tumors, and in bone.
View Article and Find Full Text PDFA large hypothesis-free proteomics study investigating serum inflammatory markers as biomarkers of dry eye disease.
Ocul Surf
January 2025
Department of Twins Research and Genetic Epidemiology, King's College London, London, United Kingdom. Electronic address:
Purpose: To test the association between serum inflammatory markers and dry eye disease (DED) using a hypothesis-free proteomic approach in a population-based cohort.
Methods: A total of 2602 unselected community-based participants (mean age 61.5 (range 21-92 years), 94.
Effects of Limosilactobacillus fermentum KBL375 on Immune Enhancement and Gut Microbiota Composition in Cyclophosphamide-Induced Immunosuppressed Mice.
Probiotics Antimicrob Proteins
January 2025
Division of Food Functionality Research, Korea Food Research Institute, 245, Nongsaengmyeong-Ro, Iseo-Myeon, Wanju-Gun, 55365, Jeollabuk-Do, Republic of Korea.
This study evaluated the immune-enhancing efficacy of Limosilactobacillus fermentum KBL375 isolated from the feces of healthy Koreans. KBL375-treated splenocytes showed enhancement of cytotoxicity against YAC-1 cells, the target of natural killer (NK) cells, with an increase in CD335, granzyme B, perforin, and interferon-gamma (IFN-γ). Oral administration of KBL375 in mice with cyclophosphamide (CP)-induced immunosuppression improved body weight and immune functions, including immune organ indices, lymphocyte proliferations, and immunoglobulin (Ig) A levels.
View Article and Find Full Text PDFChimeric Cytokine Receptor TGF-β RⅡ/IL-21R Improves CAR-NK Cell Function by Reversing the Immunosuppressive Tumor Microenvironment of Gastric Cancer.
Pharmacol Res
January 2025
Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, China. Electronic address:
Gastric cancer remains a significant global health burden, characterized by regional variations in incidence and poor survival prospects in advanced stages. Natural killer (NK) cells play a crucial role in the body's anti-cancer defense, and chimeric antigen receptor (CAR)-NK cell therapy is gaining attention as a cutting-edge and promising treatment method. This study aims to tackle the challenge of TGF-β-mediated tumor immune evasion within the immunosuppressive tumor microenvironment by designing a novel chimeric cytokine receptor TRII/21R, which consists of extracellular domains of TGF-β receptor II (TRII) and transmembrane and intracellular domains of IL-21 receptor (21R) and can convert the immunosuppressive signal from TGF-β in the tumor microenvironment (TME) into an NK cell activation signal through the IL-21R-STAT3 pathway.
View Article and Find Full Text PDFDifferences in the intrahepatic expression of immune checkpoint molecules on T cells and natural killer cells in chronic HBV patients.
Front Immunol
January 2025
Univ. Grenoble Alpes, Inserm U 1209, CNRS UMR 5309, Institute for Advanced Biosciences, Grenoble, France.
Background: Patients with chronic hepatitis B virus (HBV) infection are characterized by impaired immune response that fails to eliminate HBV. Immune checkpoint molecules (ICMs) control the amplitude of the activation and function of immune cells, which makes them the key regulators of immune response.
Methods: We performed a multiparametric flow cytometry analysis of ICMs and determined their expression on intrahepatic lymphocyte subsets in untreated and treated patients with HBV in comparison with non-pathological liver tissue.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!