Abstract:
:Guinea pig cytomegalovirus (GPCMV) provides a useful model for studies of congenital CMV infection. During characterization of the GPCMV genome sequence, we identified two types of strains in a virus stock purchased from ATCC. One of them, GPCMV/del, lacks a 1.6 kb locus that positionally corresponds to murine CMV (MCMV) M129-M133. Growth of GPCMV/del in cell culture was marginally better than that of the other strain, GPCMV/full, which harbors the 1.6 kb locus. However, in animals infected intraperitoneally with virus stocks containing both strains, GPCMV/full disseminated more efficiently than GPCMV/del, including 200-fold greater viral load in salivary glands. Viral DNA, transcripts of the immediate-early 2 gene homolog, and viral antigens were more abundant in animals infected with GPCMV/full than in those infected with GPCMV/del. Although the observed phenomena have some similarity with the growth properties of MCMV strains defective in mck-1/mck-2(M129/131) and those defective in sgg(M132), no M129-M132 homologs were found in the 1.6 kb locus. Since one of the ORFs in the locus has a weak sequence similarity with HCMV UL130, which relates to cell tropism, further studies will be required to learn the mechanism for efficient GPCMV growth in animal.
journal_name
Virologyjournal_title
Virologyauthors
Nozawa N,Yamamoto Y,Fukui Y,Katano H,Tsutsui Y,Sato Y,Yamada S,Inami Y,Nakamura K,Yokoi M,Kurane I,Inoue Ndoi
10.1016/j.virol.2008.06.018subject
Has Abstractpub_date
2008-09-15 00:00:00pages
45-54issue
1eissn
0042-6822issn
1096-0341pii
S0042-6822(08)00411-Xjournal_volume
379pub_type
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