当前位置： SCI文献检索 > JOURNAL OF VIROLOGY期刊下所有文献 > Liver sinusoidal endothelial cells are a site of murine cytomegalovirus latency and reactivation.

Liver sinusoidal endothelial cells are a site of murine cytomegalovirus latency and reactivation.

Abstract：

:Latent cytomegalovirus (CMV) is frequently transmitted by organ transplantation, and its reactivation under conditions of immunosuppressive prophylaxis against graft rejection by host-versus-graft disease bears a risk of graft failure due to viral pathogenesis. CMV is the most common cause of infection following liver transplantation. Although hematopoietic cells of the myeloid lineage are a recognized source of latent CMV, the cellular sites of latency in the liver are not comprehensively typed. Here we have used the BALB/c mouse model of murine CMV infection to identify latently infected hepatic cell types. We performed sex-mismatched bone marrow transplantation with male donors and female recipients to generate latently infected sex chromosome chimeras, allowing us to distinguish between Y-chromosome (gene sry or tdy)-positive donor-derived hematopoietic descendants and Y-chromosome-negative cells of recipients' tissues. The viral genome was found to localize primarily to sry-negative CD11b(-) CD11c(-) CD31(+) CD146(+) cells lacking major histocompatibility complex class II antigen (MHC-II) but expressing murine L-SIGN. This cell surface phenotype is typical of liver sinusoidal endothelial cells (LSECs). Notably, sry-positive CD146(+) cells were distinguished by the expression of MHC-II and did not harbor latent viral DNA. In this model, the frequency of latently infected cells was found to be 1 to 2 per 10(4) LSECs, with an average copy number of 9 (range, 4 to 17) viral genomes. Ex vivo-isolated, latently infected LSECs expressed the viral genes m123/ie1 and M122/ie3 but not M112-M113/e1, M55/gB, or M86/MCP. Importantly, in an LSEC transfer model, infectious virus reactivated from recipients' tissue explants with an incidence of one reactivation per 1,000 viral-genome-carrying LSECs. These findings identified LSECs as the main cellular site of murine CMV latency and reactivation in the liver.

journal_name

J Virol

journal_title

Journal of virology

authors

Seckert CK,Renzaho A,Tervo HM,Krause C,Deegen P,Kühnapfel B,Reddehase MJ,Grzimek NK

doi

10.1128/JVI.00870-09

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

8869-84

issue

eissn

0022-538X

issn

1098-5514

pii

JVI.00870-09

journal_volume

pub_type

杂志文章

在线工具

Liver sinusoidal endothelial cells are a site of murine cytomegalovirus latency and reactivation.