The role of high-risk human papillomavirus infections in laryngeal squamous cell carcinoma

2017 ◽  
Vol 274 (11) ◽  
pp. 3837-3842 ◽  
Author(s):  
Claus Wittekindt ◽  
Nora Wuerdemann ◽  
Stefan Gattenlöhner ◽  
Alexander Brobeil ◽  
Malgorzata Wierzbicka ◽  
...  
2019 ◽  
Vol 77 (5) ◽  
Author(s):  
Yılmaz Baş ◽  
Fügen Vardar Aker ◽  
Aylin Gönültaş ◽  
Raşit Akdeniz ◽  
Ebru Turgal ◽  
...  

ABSTRACT This study aimed to investigate the role of high-risk human papillomavirus (Hr-HPV) in Somalian and Turkish patients with esophageal squamous cell carcinoma (ESCC). In the sections obtained from paraffin-embedded blocks, the results of invasive tumor, peripheral tumor dysplasia and normal mucosa were examined. Samples containing 45 and 47 ESCC, 46 and 42 dysplasia in Somalian (n = 52) and Turkish (n = 53) cases, respectively, were included in the study. We examined the presence of 14 types of Hr-HPV in ESCC collected from Somalia and Turkey by Aptima® Panther System. Hr-HPV types were not detected in Somalian cases. p16INK4a is positive in 5 (11.4%) tumors and 6 (13%) dysplasia. p53 is positive in 28 (62.2%) tumors and 35 (76.1%) dysplasia. HPV16-18/45 are positive only in one of the Turkish cases. p16INK4a is positive in 5 (10.6%) tumors and 4 (9.5%) dysplasia. p53 is positive in 31 (63.3%) tumors and 24 (57.1%) dysplasia. No reaction was detected in normal mucosa samples in both countries. This study is regional. Although the findings did not reflect the general population, the present study shows that the effect of HPV on carcinogenesis in Somalian and Turkish ESCC patients was not significant.


2019 ◽  
Vol 9 (1) ◽  
pp. 204-214 ◽  
Author(s):  
Huanhuan Wang ◽  
Jinlong Wei ◽  
Bin Wang ◽  
Lingbin Meng ◽  
Ying Xin ◽  
...  

2020 ◽  
Author(s):  
Shunsuke Kondo ◽  
Hitoshi Hirakawa ◽  
Taro Ikegami ◽  
Takayuki Uehara ◽  
Shinya Agena ◽  
...  

Abstract Background Despite reports of a link between human papillomavirus (HPV) infection and mechanistic target of rapamycin (mTOR) signaling activation, the role of the mTOR pathway, especially raptor and rictor, in HPV-related head and neck cancer is still unclear. The aim of the present study was to elucidate the role of the mTOR pathway in HPV-related oropharyngeal squamous cell carcinoma (OPSCC). Methods The present study involved two strategies. The first was to investigate the activity of mTOR and mTOR-related complexes in high-risk HPV-positive (UM-SCC47 and CaSki) and HPV-negative (SCC-4 and SAS) cancer cell lines. The second was to elucidate mTOR complex expression in 80 oropharyngeal cancer tissues and to examine the relationship between mTOR complex expression and survival in patients with OPSCC. Results The UM-SCC47 and CaSki cell lines showed high gene and protein expression of raptor. They also exhibited G1/S and G2/M phase cell cycle arrest following 24 h incubation with 6 μM temsirolimus, a rapamycin analog, and temsirolimus administration inhibited their growth. HPV-related OPSCC samples showed high gene expression of raptor and rictor compared with HPV-unrelated OPSCC. In addition, HPV-related OPSCC patients with high raptor and rictor expression tended to have a worse prognosis than those with low or medium expression. Conclusions These results suggest that raptor has an important role in HPV-related OPSCC and that temsirolimus is a potential therapeutic agent for patients with HPV-related OPSCC. This is the first report to reveal overexpression of raptor and rictor in HPV-related OPSCC.


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