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A 10 Year Long-Lived Cellular and Humoral MERS-CoV Immunity Cross-Recognizing the Wild-Type and Variants of SARS-CoV-2: A Potential One-Way MERS-CoV Cross-Protection Toward a Pan-Coronavirus Vaccine.
J Med Virol
January 2025
Research Center, King Fahad Medical City, Riyadh Second Health Cluster, Riyadh, Saudi Arabia.
MERS is a respiratory disease caused by MERS-CoV. Multiple outbreaks have been reported, and the virus co-circulates with SARS-CoV-2. The long-term (> 6 years) cellular and humoral immune responses to MERS-CoV and their potential cross-reactivity to SARS-CoV-2 and its variants are unknown.
View Article and Find Full Text PDFTissue-resident immune cells: from defining characteristics to roles in diseases.
Signal Transduct Target Ther
January 2025
Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Tissue-resident immune cells (TRICs) are a highly heterogeneous and plastic subpopulation of immune cells that reside in lymphoid or peripheral tissues without recirculation. These cells are endowed with notably distinct capabilities, setting them apart from their circulating leukocyte counterparts. Many studies demonstrate their complex roles in both health and disease, involving the regulation of homeostasis, protection, and destruction.
View Article and Find Full Text PDFThe impact of aging on neutrophil functions and the contribution to periodontitis.
Int J Oral Sci
January 2025
Department of Plastic Surgery, Maxillofacial & Oral Health, University of Virginia School of Medicine, Charlottesville, VA, USA.
The increasing aging population and aging-associated diseases have become a global issue for decades. People over 65 show an increased prevalence and greater severity of periodontitis, which poses threats to overall health. Studies have demonstrated a significant association between aging and the dysfunction of neutrophils, critical cells in the early stages of periodontitis, and their crosstalk with macrophages and T and B lymphocytes to establish the periodontal lesion.
View Article and Find Full Text PDFCorrelation of fecal microbiome dysregulation to synovial transcriptome in an equine model of obesity associated osteoarthritis.
Ann Transl Med
December 2024
Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
Background: Osteoarthritis (OA) is increasingly thought to be a multifactorial disease in which sustained gut inflammation serves as a continued source of inflammatory mediators driving degenerative processes at distant sites such as joints. The objective of this study was to use the equine model of naturally occurring obesity associated OA to compare the fecal microbiome in OA and health and correlate those findings to differential gene expression synovial fluid (SF) cells, circulating leukocytes and cytokine levels (plasma, SF) towards improved understanding of the interplay between microbiome and immune transcriptome in OA pathophysiology.
Methods: Feces, peripheral blood mononuclear cells (PBMCs), and SF cells were isolated from healthy skeletally mature horses (n=12; 6 males, 6 females) and those with OA (n=6, 2 females, 4 males).
Helminth extracellular vesicles co-opt host monocytes to drive T cell anergy.
J Extracell Vesicles
January 2025
Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Parasitic helminths secrete extracellular vesicles (EVs) into their host tissues to modulate immune responses, but the underlying mechanisms are poorly understood. We demonstrate that Ascaris EVs are efficiently internalised by monocytes in human peripheral blood mononuclear cells and increase the percentage of classical monocytes. Furthermore, EV treatment of monocytes induced a novel anti-inflammatory phenotype characterised by CD14, CD16, CC chemokine receptor 2 (CCR2) and programmed death-ligand 1 (PD-L1) cells.
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