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Immune deficiency phenotypes of Il2rg, Rag2 or Il2rg/Rag2 double knockout rats; establishment of human leukemia xenograft models.
Lab Anim Res
December 2024
Department of Experimental Animal Research, Biomedical Research Institute, Seoul National Univ. Hospital, Seoul, Korea.
Background: Genetically immunodeficient mice lacking Il2rg and Rag2 genes have been widely utilized in the field of biomedical research. However, immunodeficient rats, which offer the advantage of larger size, have not been as extensively used to date. Recently, Severe Combined Immunodeficiency (SCID) rats were generated using CRISPR/Cas9 system, targeting Il2rg and Rag2 in National BioResource Project in Japan.
View Article and Find Full Text PDFMetabolic Stress expands Polyfunctional, Proinflammatory Th cells in Psoriatic Arthritis, where there is IL-23-independent IL-17 production.
Arthritis Rheumatol
December 2024
Department of Medicine, University of Cambridge, Cambridge University Hospitals NHS FT, Cambridge, U.K.
Objective: Genetic associations and blockade of the interleukin-23/IL-17 axis with monoclonal antibodies support a role for this pathway in psoriatic arthritis (PsA). This study examines the requirement of IL-23 for IL-17 production, and the role of the metabolic microenvironment in the expansion of Th-derived cells in PsA.
Methods: PsA patient synovial fluid or peripheral blood Th cell frequencies were evaluated by flow cytometry using CCR6, CD161 and T-bet as phenotypic markers, and the cytokines IFN-γ, GM-CSF and IL-17 assessed by flow cytometry and ELISA.
CD3+CD4-CD8- Double-Negative Lymphocytes Are Increased in the Aqueous Humor of Patients with Retinitis Pigmentosa: Their Possible Role in Mediating Inflammation.
Int J Mol Sci
December 2024
Department of Experimental and Clinical Medicine, University of Florence, 50134 Florence, Italy.
Recently, evidence has supported a significant role for immune and oxidative-mediated damage underlying the pathogenesis of different types of retinal diseases, including retinitis pigmentosa (RP). Our study aimed to evaluate the presence of immune cells and mediators in patients with RP using flow cytometric analysis of peripheral blood (PB) and aqueous humor (AH) samples. We recruited 12 patients with RP and nine controls undergoing cataract surgery.
View Article and Find Full Text PDFCCR5 mediates rheumatoid arthritis progression by promoting the activation and proliferation of non-classical Th1 cells.
Int J Rheum Dis
November 2024
Department of Clinical Immunology, Xijing Hospital, and National Translational Science Center for Molecular Medicine, Fourth Military Medical University, Xi'an, Shaanxi, China.
Aim: Rheumatoid arthritis (RA) is a prevalent autoimmune disease characterized by immune dysegulation, including an immune imbalance due to abnormal activation of non-classical Th1 cells (CD161 Th1). This study investigated the effects of CCR5 on the activation and proliferation of CD161 Th1 and their pathogenicity in patients with RA.
Methods: The study was conducted on 53 patients with RA and 32 age- and sex-matched healthy controls (HC).
Targeting LLT1 as a potential immunotherapy option for cancer patients non-responsive to existing checkpoint therapies in multiple solid tumors.
BMC Cancer
November 2024
Zumutor Biologics, Bangalore, Karnataka, India.
Background: High levels of LLT1 expression have been found in several cancers, where it interacts with CD161 on NK cells to facilitate tumor immune escape. Targeting LLT1 could potentially relieve this inhibitory signal and enhance anti-tumor responses mediated through NK cells. Using the 'The Cancer Genome Atlas' (TCGA) database, we investigated the role of LLT1 in the tumor microenvironment (TME) across various cancers.
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