نتایج جستجو برای: merkel cell polyomavirus
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BACKGROUND Several new polyomaviruses have been discovered in the last decade, including Merkel cell polyomavirus (MCPyV). Little is known about the natural history of the more recently discovered polyomaviruses. We estimated the incidence, prevalence, and persistence of 9 polyomaviruses (MCPyV, BK polyomavirus, KI polyomavirus, JC polyomavirus, WU polyomavirus, Human polyomavirus 6 [HPyV6], HP...
Merkel cell polyomavirus (MCPyV) is a common infectious agent that is likely involved in the etiology of most Merkel cell carcinomas (MCC). Serum antibodies recognizing the MCPyV capsid protein VP1 are detectable at high titer in nearly all MCC patients and remain stable over time. Although antibodies to the viral capsid indicate prior MCPyV infection, they provide limited clinical insight into...
The recently discovered human Merkel cell polyomavirus (MCPyV or MCV) causes the aggressive Merkel cell carcinoma (MCC) in the skin of immunocompromised individuals. Conflicting reports suggest that cellular glycans containing sialic acid (Neu5Ac) may play a role in MCPyV infectious entry. To address this question, we solved X-ray structures of the MCPyV major capsid protein VP1 both alone and ...
These findings contradict existing evidence showing MCV sT protein expression in MCVMCC cancer tissues (Shuda et al., 2011) and cell lines (see Figure. 2, Houben et al., 2010) (Guastafierro et al., 2013). To investigate this discrepancy, we tried replicating Angermeyer et al's results using the same antibodies to detect MCV sT (CM8E6 (Kwunet al., 2009), CM5E1 (Shuda et al., 2011) and 2T2 ((Wang...
Merkel cell carcinoma (MCC) is an aggressive cutaneous neuroendocrine tumor with high mortality rates. Merkel cell polyomavirus (MCPyV), identified in the majority of MCCs, may drive tumorigenesis via viral T antigens. However, the mechanisms underlying pathogenesis in MCPyV-negative MCCs remain poorly understood. To nominate genes contributing to the pathogenesis of MCPyV-negative MCCs, we per...
The family Polyomaviridae is composed of small, non-enveloped, double-stranded DNA viruses widely used to study cell transformation in vitro and tumor induction in vivo. The development of pilomatricomas in mice experimentally infected with polyomavirus led us to detect the viral major capsid protein VP-1 in human pilomatricomas. This tumor, even uncommon, is one of the most frequent benign hai...
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