Interferon-beta is thought to provide clinical improvement to multiple sclerosis (MS) patients, in part, through its ability to suppress the generation of IL-12-dependent autoimmune T helper type 1 (Th1) cells by monocyte-derived dendritic cells (DC). We now describe how pre-incubation with 1000 U/ml of IFN-beta differentially regulates expression of multiple IL-12 family members in activated, immature human DC, inhibiting CD40/IFN-gamma-induced p35 and p40 message levels, while enhancing p19 and Epstein-Barr virus-induced gene 3 (EBI3) levels. IFN-beta-mediated inhibition of p40 mRNA and augmentation of p19 mRNA both require de novo protein synthesis. These findings indicate that IFN-beta will be found to have contrasting effects on DC secretion of the various IL-12 family homo- and heterodimers.
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http://dx.doi.org/10.1016/s0165-5728(02)00362-4 | DOI Listing |
J Crohns Colitis
January 2025
Department of Medicine (Division of Gastroenterology) and Farncombe Family Digestive Health Research Institute; McMaster University, Hamilton ON, Canada.
Introduction: In inflammatory bowel disease (IBD), the number of eosinophils increases in the lamina propria of the intestinal tract, but their specific patho-mechanistic role remains unclear. Elevated blood eosinophil counts in active IBD suggest their potential as biomarkers for predicting response to biologic therapies. This study evaluates blood eosinophil count trends and their predictive value for clinical response and endoscopic improvement in patients with IBD receiving ustekinumab or adalimumab induction therapy.
View Article and Find Full Text PDFClin Exp Med
January 2025
Department of Hematology-Oncology, Imam Hossein Educational Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
IL-27 is structurally an immune-enhancing and pleiotropic two-chain cytokine associated with IL-12 and IL-6 families. IL-27 contains two subunits, namely IL-27p28 and EBI3. A heterodimer receptor of IL-27, composed of IL27Rα (WSX1) and IL6ST (gp130) chains, mediates the IL-27 function following the activation of STAT1 and STAT3 signaling pathways.
View Article and Find Full Text PDFJ Interferon Cytokine Res
January 2025
The Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia.
Suppressor of cytokine signaling (SOCS) 1 is a key negative regulator of interferon (IFN), interleukin (IL)12, and IL-2 family cytokine signaling through inhibition of the Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway. To investigate the temporal induction of SOCS1 in response to cytokine in live cells and its selective regulation of signaling pathways, we generated a mouse expressing a Halo-tag-SOCS1 fusion protein (Halo-SOCS1) under control of the endogenous promoter. Homozygous Halo-SOCS1 mice () were viable with minor T cell abnormalities, most likely due to enhanced Halo-SOCS1 expression in thymocytes compared with the untagged protein.
View Article and Find Full Text PDFMedicina (Kaunas)
November 2024
Department of Internal Medicine and Nephrology, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania.
Autosomal Dominant Polycystic Kidney Disease (ADPKD) is the most frequent genetic renal disease with a complex physiopathology. More and more studies sustain that inflammation plays a crucial role in ADPKD pathogenesis and progression. We evaluated IL-12 involvement in ADPKD pathophysiology by assessing the serum levels of its monomers and heterodimers.
View Article and Find Full Text PDFJ Transl Autoimmun
June 2025
Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China.
In recent years, the discovery of IL-12 family cytokines, which includes IL-12, IL-23, IL-27, IL-35, and IL-39, whose biological functions directly or indirectly affect various autoimmune diseases. In autoimmune diseases, IL-12 family cytokines are aberrantly expressed to varying degrees. These cytokines utilize shared subunits to influence T-cell activation and differentiation, thereby regulating the balance of T-cell subsets, which profoundly impacts the onset and progression of autoimmune diseases.
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