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Sökning: WFRF:(Ospelt Caroline)

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1.
  • de Rooy, Diederik P C, et al. (författare)
  • Genetic Factors for the Severity of ACPA-negative Rheumatoid Arthritis in 2 Cohorts of Early Disease: A Genome-wide Study.
  • 2015
  • Ingår i: Journal of Rheumatology. - : The Journal of Rheumatology. - 0315-162X .- 1499-2752. ; 42:8, s. 1383-1391
  • Tidskriftsartikel (refereegranskat)abstract
    • Rheumatoid arthritis (RA) that is negative for anticitrullinated protein antibodies (ACPA) is a subentity of RA, characterized by less severe disease. At the individual level, however, considerable differences in the severity of joint destruction occur. We performed a study on genetic factors underlying the differences in joint destruction in ACPA-negative patients.
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2.
  • Wasén, Caroline, et al. (författare)
  • Nicotine Changes the microRNA Profile to Regulate the FOXO Memory Program of CD8(+)T Cells in Rheumatoid Arthritis
  • 2020
  • Ingår i: Frontiers in Immunology. - : Frontiers Media SA. - 1664-3224. ; 11
  • Tidskriftsartikel (refereegranskat)abstract
    • Objective:Smoking suppresses PD-1 expression in patients with rheumatoid arthritis (RA). In this study, we assess if smoking changed the epigenetic control over CD8(+)T cell memory formation through a microRNA (miR) dependent mechanism. Methods:Phenotypes of CD8(+)T cells from smokers and non-smokers, RA and healthy, were analyzed by flow cytometry. A microarray analysis was used to screen for differences in miR expression. Sorted CD8(+)cells werein vitrostimulated with nicotine and analyzed for transcription of miRs and genes related to memory programming by qPCR. Results:CD27(+)CD107a(-)CD8(+)T cells, defining a naive-memory population, had low expression of PD-1. Additionally, the CD27(+)population was more frequent in smokers (p= 0.0089). Smokers were recognized by differential expression of eight miRs. Let-7c-5p, let-7d-5p and let-7e-5p, miR-92a-3p, miR-150-5p, and miR-181-5p were up regulated, while miR-3196 and miR-4723-5p were down regulated. These miRs were predicted to target proteins within the FOXO-signaling pathway involved in CD8(+)memory programming. Furthermore, miR-92a-3p was differentially expressed in CD8(+)cells with naive-memory predominance. Nicotine exposure of CD8(+)cells induced the expression of miR-150-5p and miR-181a-5p in the naive-memory cellsin vitro. Additionally, nicotine exposure inverted the ratio between mRNAs of proteins in the FOXO pathway and their targeting miRs. Conclusions:Smokers have a high prevalence of CD8(+)T cells with a naive-memory phenotype. These cells express a miR profile that interacts with the memory programming conducted through the FOXO pathway.
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