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Sökning: WFRF:(Pignoloni B.)

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  • Romania, P., et al. (författare)
  • Identification of a Genetic Variation in ERAP1 Aminopeptidase that Prevents Human Cytomegalovirus miR-UL112-5p-Mediated Immunoevasion
  • 2017
  • Ingår i: Cell Reports. - : Elsevier BV. - 2211-1247. ; 20:4, s. 846-853
  • Tidskriftsartikel (refereegranskat)abstract
    • Herein, we demonstrate that HCMV miR-UL112-5p targets ERAP1, thereby inhibiting the processing and presentation of the HCMV pp65495-503 peptide to specific CTLs. In addition, we show that the rs17481334 G variant, naturally occurring in the ERAP1 30 UTR, preserves ERAP1 from miR-UL1125p-mediated degradation. Specifically, HCMV miRUL112-5p binds the 30 UTR of ERAP1 A variant, but not the 30 UTR of ERAP1 G variant, and, accordingly, ERAP1 expression is reduced both at RNA and protein levels only in human fibroblasts homozygous for the A variant. Consistently, HCMV-infected GG fibroblasts were more efficient in trimming viral antigens and being lysed by HCMV-peptide-specific CTLs. Notably, a significantly decreased HCMV seropositivity was detected among GG individuals suffering from multiple sclerosis, a disease model in which HCMV is negatively associated with adultonset disorder. Overall, our results identify a resistance mechanism to HCMV miR-UL112-5p-based immune evasion strategy with potential implications for individual susceptibility to infection and other diseases.
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