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Significant abundance of bacterial flagellin and expression of its surface localized receptor toll-like receptor 5 and cytokine interleukin-22 in South African infants with poor oral rotavirus vaccine take.
Gut Pathog
January 2025
Diarrheal Pathogens Research Unit (DPRU), Department of Virology, Sefako Makgatho Health Sciences University, Ga-rankuwa, Pretoria, South Africa.
Bacterial flagellin, a potent intestinal innate immune activator, prevents murine rotavirus (RV) infection independent of adaptive immunity and interferons. The flagellin-induced immunity is mediated by Toll-like receptor (TLR5) and Nod-like receptor C4 (NLRC4), which elicit the production of interleukins 22 (IL-22) and IL-18, respectively. Here, we assessed whether a high abundance of flagellin at the time of vaccination would negatively affect the oral RV vaccine take.
View Article and Find Full Text PDFNucleotide sequence variants, gene expression and serum profile of immune and antioxidant markers associated with brucellosis resistance/susceptibility in Shami goat.
Ir Vet J
January 2025
Animal and Poultry Production Division, Department of Animal and Poultry Breeding, Desert Research Center, Cairo, Egypt.
Brucellosis is a highly contagious zoonotic bacterial disease. It has considerable negative consequences on the animal production industry worldwide. The objective of this study was to investigate the genetic and molecular variations in Shami goat susceptible to Brucella infection.
View Article and Find Full Text PDFInterferon-α promotes HLA-B-restricted presentation of conventional and alternative antigens in human pancreatic β-cells.
Nat Commun
January 2025
Université Paris Cité, Institut Cochin, CNRS, INSERM, Paris, France.
Interferon (IFN)-α is the earliest cytokine signature observed in individuals at risk for type 1 diabetes (T1D), but the effect of IFN-α on the antigen repertoire of HLA Class I (HLA-I) in pancreatic β-cells is unknown. Here we characterize the HLA-I antigen presentation in resting and IFN-α-exposed β-cells and find that IFN-α increases HLA-I expression and expands peptide repertoire to those derived from alternative mRNA splicing, protein cis-splicing and post-translational modifications. While the resting β-cell immunopeptidome is dominated by HLA-A-restricted peptides, IFN-α largely favors HLA-B and only marginally upregulates HLA-A, translating into increased HLA-B-restricted peptide presentation and activation of HLA-B-restricted CD8 T cells.
View Article and Find Full Text PDFSingle-cell RNA flow cytometry to assess intratumoral production of cytokines/chemokines.
Methods Cell Biol
January 2025
Inflammatory Cell Dynamics Section, Laboratory of Integrative Cancer Immunology (LICI), Center for Cancer Research (CCR), National Cancer Institute (NCI), Bethesda, MD, United States. Electronic address:
The tumor microenvironment (TME) consists of complex interactions between cellular and extracellular components, among which the immune system is known to play an integral role in disease progression and response to therapy. Cytokines and chemokines are cell signaling proteins used by immune cells to communicate with each other as well as with other cell types in the body. These proteins control systemic and local immune responses and levels of cytokines/chemokines in the TME have been associated with tumor outcomes.
View Article and Find Full Text PDFInterferon Inhibitors Increase rAAV Production in HEK293 Cells.
J Biotechnol
January 2025
Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, MA 01854. Electronic address:
Recombinant adeno-associated viruses (rAAVs) comprise a promising viral vector for therapeutic gene delivery to treat disease. However, the current manufacturing capability of rAAVs must be improved to meet commercial demand. Previously published omics studies indicate that rAAV production through transient transfection triggers antiviral responses and endoplasmic reticulum stress responses in the host cell.
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