Absence of Human Papillomavirus in Tonsillar Squamous Cell Carcinomas from Chinese Patients
Overview
Authors
Affiliations
Epidemiological and experimental evidence from Western countries now consistently support an etiological role for human papillomavirus (HPV) in a subset of oropharyngeal squamous cell carcinomas (SCC), especially those originating in the tonsil. The role of HPV in the etiology of tonsil cancer in developing countries such as China has not been investigated. In this study, none of 16 tonsil cancer specimens from Chinese patients were positive for HPV DNA, whereas those from Australian patients using the same methodology gave a positivity rate of 46%. The tumors from Chinese patients, like the Australian HPV-negative subset, significantly overexpressed pRb and cyclin D1 and underexpressed p16(INK4A) (p16). In contrast, the Australian HPV-positive cancers overexpressed p16 and had reduced expression of pRb and cyclin D1. These findings may help explain why China has a relatively low rate of oropharyngeal cancer compared with Australia. They also support the hypothesis that molecular pathways to tonsil cancer mediated by HPV are distinct from those induced by mutagens present in cigarette smoke or alcohol.
Absence of human papillomavirus in oral cavity squamous cell carcinomas among Saudi patients.
Jaber L, Fatani H, Aldhahri S Clin Exp Dent Res. 2019; 5(1):38-43.
PMID: 30847231 PMC: 6392823. DOI: 10.1002/cre2.153.
The analysis of human papillomavirus DNA in penile cancer tissue by hybridization.
Takamoto D, Kawahara T, Kasuga J, Sasaki T, Yao M, Yumura Y Oncol Lett. 2018; 15(5):8102-8106.
PMID: 29731917 PMC: 5920620. DOI: 10.3892/ol.2018.8351.
[Role of human papillomavirus in head and neck squamous cell carcinomas].
Guangxue C, Xiaolei G, Xinhua L Hua Xi Kou Qiang Yi Xue Za Zhi. 2017; 35(2):187-191.
PMID: 28682551 PMC: 7030001. DOI: 10.7518/hxkq.2017.02.015.
Lv Z, Wu X, Cao W, Shen Z, Wang L, Xie F J Exp Clin Cancer Res. 2014; 33:100.
PMID: 25539663 PMC: 4393566. DOI: 10.1186/s13046-014-0100-y.
Human papillomavirus infection in 674 Chinese patients with laryngeal squamous cell carcinoma.
Xu Y, Liu S, Yi H, Wang J, Dong P, Li X PLoS One. 2014; 9(12):e115914.
PMID: 25536405 PMC: 4275260. DOI: 10.1371/journal.pone.0115914.