Human papillomavirus type 16 proteins E6 and E7 have been shown to cause centrosome amplification and lagging chromosomes during mitosis. These abnormalities during mitosis can result in missegregation of the chromosomes, leading to chromosomal instability. Genomic instability is thought to be an essential part of the conversion of a normal cell to a cancer cell. We now show that E6 and E7 toge...

OBJECTIVE To evaluate the association between p53 polymorphisms and human papillomavirus (HPV) E6/E7 mRNA expression. METHODS We analyzed 175 cervical samples from women aged 16-69 years old who were tested for HPV E6/E7 mRNA expression (NucliSENS® EasyQ® HPV). The samples were divided into three groups: positive (n=75) those with positive HPV E6/E7 mRNA expression and positive high-risk HPV ...

The human papillomavirus (HPV)16 E6 and E7 correlation with chemokine ligand (CCL)20 expression and Langerhans cells (LCs) in cervical lesions was investigated. We enrolled 43 patients with surgically treated cervical lesions from the Department of Gynecology in our hospital, and 20 controls without cervical lesions. Subjects were divided by pathology: HPV16(-) and HPV16(+) normal cervical grou...

The human papillomavirus (HPV) is the most significant causative agent in the development of cervical cancer. Despite its presence in almost all cervical cancers, HPV by itself is unable to transform a normal cell to a cancerous one. Instead, additional cellular mutations are required to supplement the HPV oncoproteins E6 and E7. Activation of the Notch1 signaling pathway has been proposed as o...

BACKGROUND The purpose of this study was to determine prospectively both human papillomavirus (HPV) load and physical status in different types of head and neck squamous cell carcinoma (HNSCC). METHODS HPV DNA, E6/E7 mRNA expression, viral load, and physical status of 184 patients with HNSCC were examined simultaneously by polymerase chain reaction (PCR)-based methods. RESULTS The HPV genom...

Human papillomavirus type 16 (HPV-16) infection is associated with a majority of cervical cancers and a significant proportion of head and neck cancers. Here, we describe a novel-engineered DNA vaccine that encodes a HPV-16 consensus E6/E7 fusion gene (pConE6E7) with the goal of increasing its antitumor cellular immunity. Compared to an early stage HPV-16 E7 DNA vaccine (pE7), this construct wa...

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 type 16 (HPV16) is the major cause of cervical cancer and of a fraction of oropharyngeal carcinoma. Few studies compared the viral expression profiles in the two types of tumor. We analyzed HPV genotypes and viral load as well as early (E2/E4, E5, E6, E6*I, E6*II, E7) and late (L1 and L2) gene expression of HPV16 in cervical and oropharyngeal cancer biopsies. The study incl...

Cervical cancer is one of the most prevalent and fatal cancers among women and infection of the human papillomavirus (HPV) is the most important risk factor. This study investigated how HPV16 regulated GSK3β expression and function to promote cervical cancers. The expression of GSK3β was analyzed by quantitative PCR and western blot. The proliferation, invasion, and clonogenic survival of cells...

Human malignant gliomas are thought to develop as the result of stepwise accumulations of multiple genetic alterations. Recently, we showed that E6/E7-mediated inactivation of p53/pRb, ras pathway activation (initiated by expression of mutant H-Ras), and expression of human telomerase reverse transcriptase (hTERT) in combination converted normal human astrocytes into cells that formed intracran...