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Tanapox virus (TPV) belongs to the genus Yatapoxvirus and causes a relatively benign zoonotic disease in man, with symptoms that resemble a mild version of human monkeypox. In order to investigate the underlying mechanisms of TPV pathogenesis, the tropism and replication characteristics of TPV were examined in a variety of primary human cells. A GFP expressing TPV (TPV-GFP) was constructed and used...
Members of the genus Yatapoxvirus, which include Tanapox virus (TPV) and Yaba monkey tumor virus, infect primates including humans. Two strains of TPV isolated 50 years apart from patients infected from the equatorial region of Africa have been sequenced. The original isolate from a human case in the Tana River Valley, Kenya, in 1957 (TPV-Kenya) and an isolate from an infected traveler in the Republic...
Transient expression of viral genes from certain poxviruses in uninfected mammalian cells can sometimes be unexpectedly inefficient. The reasons for poor expression levels can be due to a number of features of the gene cassette, such as cryptic splice sites, polymerase II termination sequences or motifs that lead to mRNA instability. Here we suggest that in some cases the problem of low protein expression...
Proinflammatory caspases play an essential role in innate immune responses to infection by regulating the cleavage and activation of proinflammatory cytokines. Activation of these enzymes requires the assembly of an intracellular molecular platform, termed the inflammasome, which is comprised of members of the pyrin domain (PYD)-containing superfamily of apoptosis and inflammation-regulatory proteins...
Recent studies have indicated a critical role for interferon (IFN)-mediated antiviral responses in the host range of myxoma virus (MV), a pathogenic poxvirus of rabbits. To investigate the contribution of IFN to MV tropism in nonleporine cells, primary human dermal fibroblasts (HDFs) were tested for permissiveness to MV infection. Low-passage HDFs that underwent fewer than 25 population doublings...
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