Erschienen in:
17.09.2018 | Original Article – Cancer Research
Presence and activity of HPV in primary lung cancer
verfasst von:
Talita Helena Araujo de Oliveira, Carolina Medeiros do Amaral, Bianca de França São Marcos, Kamylla Conceição Gomes Nascimento, Ana Carine de Miranda Rios, Dafne Carolina Alves Quixabeira, Maria Tereza Cartaxo Muniz, Jacinto da Costa Silva Neto, Antonio Carlos de Freitas
Erschienen in:
Journal of Cancer Research and Clinical Oncology
|
Ausgabe 12/2018
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Abstract
Purpose
Evaluate the presence of human papillomavirus (HPV) in biopsies of Brazilian patients with lung cancer and also the expression of the E6 and E7 oncoproteins. HPV is widely known as an important condition for cervical cancer although evidence today shows it is associated with several other types of cancer and may also be involved in lung cancer development. However, there are some divergences regarding the presence and activity of HPV in lung carcinogenesis.
Methods
The detection of HPV was performed by PCR, followed by genotype and immunohistochemical evaluation of E6 and E7 HPV type specific, from 63 patients.
Results
HPV was found to be present in 33 of the 63 samples, and types 16 and 18 were detected with frequencies of 81% (27/33) and 19% (6/33), respectively. About the presence of the virus in different histological types of tumors, HPV was detected in squamous cell carcinoma (39.39%), followed by adenocarcinoma (33.33%) and small cell carcinoma (18.18%) and large cell carcinoma (9.1%). The presence of the E6 (antibody anti-HPV 16 and anti-HPV 18) and E7 (antibody anti-HPV 16 and anti-HPV 18) oncoproteins was detected by immunohistochemical stain technique in 28/33 samples and 25/33 samples, respectively.
Conclusions
Our results suggest that the lung tumor patients have high prevalence of HPV and the virus is not only present but also active in tumor cells. Therefore, the HPV is probably playing a role in lung carcinogenesis.