Abstract:
:Human papillomavirus (HPV) has been identified as a causative agent of cervical cancer and oropharyngeal cancer (OPC). Intriguingly, estrogen and HPV were shown to play synergistic roles in cervical carcinogenesis. We recently demonstrated that the apolipoprotein B mRNA-editing catalytic polypeptide 3 (APOBEC3, A3) family, which is inducible by estrogen, could lead to HPV DNA hypermutation and cause viral DNA integration. In the present study, we examined the relationships between estrogen-estrogen receptor α (ERα) and A3s in HPV-positive OPC. ERα expression was associated with HPV positivity in OPC biopsy samples using immunohistochemical analysis and reverse-transcription quantitative polymerase chain reaction. In addition, ERα was significantly associated with improved overall survival in HPV-positive OPC (hazard ratio, 0.26; p = 0.029). APOBEC3A (A3A) mRNA was induced by estrogen in HPV and ERα-positive OPC cells. Furthermore, A3A mRNA and protein expression were significantly higher in ERα-positive cases than in ERα-negative ones, among HPV-positive biopsy samples (p = 0.037 and 0.047). These findings suggest that A3A is associated with a good prognosis in ERα-positive OPC, and indicate the prognostic significance of ERα in HPV-positive OPC. This is the first study to demonstrate the prognostic role of ERα in HPV-positive OPC.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Kano M,Kondo S,Wakisaka N,Wakae K,Aga M,Moriyama-Kita M,Ishikawa K,Ueno T,Nakanishi Y,Hatano M,Endo K,Sugimoto H,Kitamura K,Muramatsu M,Yoshizaki Tdoi
10.1002/ijc.32500subject
Has Abstractpub_date
2019-09-15 00:00:00pages
1547-1557issue
6eissn
0020-7136issn
1097-0215journal_volume
145pub_type
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