Human papillomavirus proteins are found in peripheral blood and semen Cd20+ and Cd56+ cells during Hpv-16 semen infection

BMC Infectious Diseases

Research Article

Andrea Lenzi¹  Luca De Toni²  Carlo Foresta²  Silvia Mason²  Andrea Garolla²  Alessandro Bertoldo²  Damiano Pizzol² 

[1] Department of Medical Physiopathology, 1st University of Rome “La Sapienza”, Rome, Italy;Department of Molecular Medicine and Centre for Human Reproduction Pathology, University of Padova, Via Gabelli 63, 35121, Padova, Italy;

关键词: Human papillomavirus;    Semen infection;    in situ;    Peripheral blood mononuclear cells;    Hpv-related disease;   

DOI  :  10.1186/1471-2334-13-593

 received in 2013-10-09, accepted in 2013-12-05,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundHuman papillomavirus (HPV) currently represents an important risk factor for cancer development and infertility in humans. Whilst binding of HPV to spermatozoa has been associated with male infertility, an investigation about the presence of HPV-DNA in non-spermatozoal semen cells is lacking. Previous findings documented the presence of HPV in peripheral blood leukocytes. The aim of this study was to investigate the expression of HPV markers in semen and blood leukocytes during HPV-16 infection.MethodsA total of 32 subjects, 16 patients affected by HPV-16 semen infection and 16 controls, were evaluated in our andrological centre and enrolled in the study. Semen non-spermatozoal cells from all subjects were isolated and evaluated for the expression of HPV-16 markers (DNA and L1, E6 proteins) and further characterized for their molecular phenotype. Analogue determination was performed on peripheral blood mononuclear cells.ResultsThe presence of HPV-DNA by FISH analysis in a round cell population from semen, confirmed to be CD45+ leukocytes, was observed. These HPV-DNA containing-cells also displayed HPV-16-E6 and HPV-16-L1 viral proteins and, upon further investigation, were found to be CD20+ and CD56+, likely phenotypes of B cells and natural killer cells (NK) respectively. In 25% of the patient group, a very small population of peripheral blood mononuclear cells was found to be positive for HPV-DNA via FISH. These cells displayed the CD20+ and CD56+ phenotype alike. None of the control subjects displayed HPV-DNA in either semen or peripheral blood.ConclusionConsidering the role of CD20+ and CD56+ cell populations in the antiviral immune response, the detection of HPV markers on leukocytes may reflect the presence of virus particles within the endosomal compartment. However, the presence of HPV markers in circulating mononuclear cells raise concerns about the risk of developing cancers to distal organs.

【 授权许可】

CC BY   
© Foresta et al.; licensee BioMed Central Ltd. 2013