Latency-associated degradation of the MRP1 drug transporter during latent human cytomegalovirus infection.
Authors
Weekes, MTan, S
Poole, E
Talbot, S
Antrobus, R
Smith, Duncan L
Montag, C
Gygi, S
Sinclair, J
Lehner, P
Affiliation
Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK.Issue Date
2013-04-12
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The reactivation of latent human cytomegalovirus (HCMV) infection after transplantation is associated with high morbidity and mortality. In vivo, myeloid cells and their progenitors are an important site of HCMV latency, whose establishment and/or maintenance require expression of the viral transcript UL138. Using stable isotope labeling by amino acids in cell culture-based mass spectrometry, we found a dramatic UL138-mediated loss of cell surface multidrug resistance-associated protein-1 (MRP1) and the reduction of substrate export by this transporter. Latency-associated loss of MRP1 and accumulation of the cytotoxic drug vincristine, an MRP1 substrate, depleted virus from naturally latent CD14(+) and CD34(+) progenitors, all of which are in vivo sites of latency. The UL138-mediated loss of MRP1 provides a marker for detecting latent HCMV infection and a therapeutic target for eliminating latently infected cells before transplantation.Citation
Latency-associated degradation of the MRP1 drug transporter during latent human cytomegalovirus infection. 2013, 340 (6129):199-202 ScienceJournal
ScienceDOI
10.1126/science.1235047PubMed ID
23580527Type
ArticleLanguage
enISSN
1095-9203ae974a485f413a2113503eed53cd6c53
10.1126/science.1235047
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