The E6 protein from high-risk human papillomaviruses (HPVs) targets the p53 tumor suppressor for degradation by the proteasome pathway. This ability contributes to the oncogenic potential of these viruses. However, several aspects concerning the mechanism of E6-mediated p53 degradation at the cellular level remain to be clarified. This study therefore examined the role of cell localization and ...

Cervical cancer is the second-most common cancer in women worldwide causing most cancer related deaths in women in developing countries including India. The most predominant etiological factor for cervical cancer is persistent infection of certain high-risk types of human papillomaviruses (HR-HPVs), while low-risk types are associated with benign cervical lesions and genital warts. In India, th...

background: vaccines capable of controlling tumor virus based infections are found difficult to develop due to the consistence latent infection in the host. dna vaccines are attractive tools for the development of hpv vaccines and inducing antigen-specific immunity owing to the stability, simplicity of delivery, safety and cost effectiveness. however, there is a need to increase their potency b...

PURPOSE The aim of this study was to evaluate the human papillomavirus genotypes and the frequency of multiple human papillomavirus infections, as well as to assess the association between human papillomavirus genotype, cyto-histopathological abnormalities and age range. METHODS A retrospective cross-sectional study was carried out between June 2010 and October 2013 in Salvador, Bahia, Brazil...

The activity and epithelial tropism of the human papillomavirus type 18 P105 early promoter, which directs the synthesis of the E6 and E7 transforming genes, are controlled by cis elements included in the viral long control region. To identify potential cellular regulators of this promoter, we mutagenized one or both of the 5'-TGACTAA-3' cis elements capable of interacting with the AP1 transcri...

Plasmids containing the E6 and E7 open reading frames of human papillomavirus type 18 expressed from an autologous transcriptional control region were sufficient for transformation of NIH 3T3 and Rat-1 cells. Transformation by these sequences did not always involve morphological alterations even though anchorage-independent growth occurred at a high frequency. In these cells, the efficiency of ...

  Human papillomavirus (HPV) is one of the most common causes of sexually transmitted diseases worldwide and is the etiological agent of cervical and other anogenital malignancies. Since HPVs have been shown to possess oncogenic potential, an association between HPV infection and prostatic cancer (PCa) has been suggested. There are conflicting reports on the impact of HPV infection on the deve...

Papillomaviruses are small double-stranded DNA viruses that replicate episomally in the nuclei of infected cells. The full-length E1 protein of papillomaviruses is required for the replication of viral DNA. The viral mRNA from which the human papillomavirus type 18 E1 protein is expressed is not known. We demonstrate that in eukaryotic cells, the E1 protein is expressed from polycistronic mRNA ...