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Human cytomegalovirus encodes an MHC class I-like molecule (UL142) that functions to inhibit NK cell lysis

Wills, Mark R., Ashiru, Omodele, Reeves, Matthew B., Okecha, Georgina, Trowsdale, John, Tomasec, Peter, Wilkinson, Gavin William Grahame ORCID: https://orcid.org/0000-0002-5623-0126, Sinclair, John and Sissons, J.G. Patrick 2005. Human cytomegalovirus encodes an MHC class I-like molecule (UL142) that functions to inhibit NK cell lysis. J Immunol 175 , pp. 7457-65.

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Abstract

Clinical and low passage strains of human CMV (HCMV) encode an additional MHC class I-related molecule UL142, in addition to the previously described UL18. The UL142 open reading frame is encoded within the ULb' region which is missing from a number of common high passage laboratory strains. Cells expressing UL142 following transfection, and fibroblasts infected with a recombinant adenovirus-expressing UL142, were used to screen both polyclonal NK cells and NK cell clones, in a completely autologous system. Analysis of 100 NK cell clones derived from five donors, revealed 23 clones that were inhibited by fibroblasts expressing UL142 alone. Small-interfering RNA-mediated knockdown of UL142 mRNA expression in HCMV-infected cells resulted in increased sensitivity to lysis. From these data we conclude that UL142 is a novel HCMV-encoded MHC class I-related molecule which inhibits NK cell killing in a clonally dependent manner.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Systems Immunity Research Institute (SIURI)
Subjects: R Medicine > R Medicine (General)
ISSN: 0022-1767
Last Modified: 17 Oct 2022 08:31
URI: https://orca.cardiff.ac.uk/id/eprint/339

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