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Investigation of the Presence of Papillomavirus in Bovine Testicles and Determination of γH2AX and Cytochrome C in Testicular Tissues Determined to be Infected.
Vet Med Sci
January 2025
Department of Virology, Sivas Cumhuriyet University Faculty of Veterinary Medicine, Sivas, Türkiye.
This study aimed to detect the presence of bovine papillomavirus (BPV) in the testicular tissue of bulls over 1-year old by immunohistochemical, immunofluorescence and molecular assay targeting methods. In addition, γH2AX and cytochrome c expressions were evaluated by immunohistochemical and immunofluorescent methods in samples positive for BPV agent. In this study, 100 testicular specimens that did not show any macroscopic papilloma findings were collected.
View Article and Find Full Text PDFExploring the antiproliferative effect of PI3K/Akt/mTOR pathway and CDK4/6 inhibitors in human papillomavirus‑positive and ‑negative head and neck squamous cell carcinoma cell lines.
Int J Oncol
February 2025
Department of Pathology, GROW Research Institute for Oncology and Reproduction, Maastricht University Medical Center, 6229HX Maastricht, The Netherlands.
Human papillomavirus (HPV)‑positive and -negative head and neck squamous cell carcinoma (HNSCC) are often associated with activation of the phosphatidylinositol 3‑kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathway due to mutations or amplifications in , loss of or activation of receptor tyrosine kinases. In HPV‑negative tumors, (encoding p16 protein) inactivation or (encoding Cyclin D1 protein) amplification frequently results in sustained cyclin‑dependent kinase (CDK) 4/6 activation. The present study aimed to investigate the efficacy of the CDK4/6 inhibitors (CDKi) palbociclib and ribociclib, and the PI3K/Akt/mTOR pathway inhibitors (PI3Ki) gedatolisib, buparlisib and alpelisib, in suppressing cell viability of HPV‑positive and ‑negative HNSCC cell lines.
View Article and Find Full Text PDFDARPin-induced reactivation of p53 in HPV-positive cells.
Nat Struct Mol Biol
January 2025
Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance, Goethe University, Frankfurt, Germany.
Infection of cells with high-risk strains of the human papillomavirus (HPV) causes cancer in various types of epithelial tissue. HPV infections are responsible for ~4.5% of all cancers worldwide.
View Article and Find Full Text PDFPathological variants in HPV-independent vulvar tumours.
Sci Rep
January 2025
Department of Laboratory Medicine, Clinical Pathology and Genetics, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Vulvar cancer is a rare gynaecological disease that can be caused by infection with human papillomavirus (HPV). The mutational frequencies and landscape for HPV-associated and HPV-independent vulvar tumor development are supposedly two distinctly different pathways and more detailed knowledge on target biological mechanisms for individualized future treatments is needed. The study included formalin-fixed paraffin-embedded (FFPE) samples from 32 cancer patients (16 HPV-negative and 16 HPV-associated), treated in Örebro, Sweden from 1988 to 2008.
View Article and Find Full Text PDFRecent advances in HPV biotechnology: Understanding host-virus interactions and cancer progression-a review.
Int J Surg
October 2024
Department of Pharmacy, College of Medicine and Health Sciences, Ambo University, Ambo, Ethiopia.
Cervical cancer ranks as the fourth most common cancer among women globally, posing a significant mortality risk. Persistent infection with high-risk human papillomavirus (HPV) is the primary instigator of cervical cancer development, often alongside co-infection with other viruses, precipitating various malignancies. This study aimed to explore recent biotechnological advances in understanding HPV infection dynamics, host interactions, and its role in oncogenesis.
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