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Updated: Dec 27, 2025
Use of Interferon-γ Enzyme-linked Immunospot Assay to Characterize Novel T-cell Epitopes of Human Papillomavirus
Published on: March 8, 2012
Immune Response of Plasmacytoid Dendritic Cells Stimulated by Human Papillomavirus (HPV) E6 in an In Vitro System
Xiaoxian Xu1, Shuhui Yuan1, Xiaojing Zhang1
1Institute of Cancer Research and Basic Medical Sciences of Chinese Academy of Sciences, Cancer Hospital of University of Chinese Academy of Sciences, Zhejiang Cancer Hospital, Hangzhou, Zhejiang, China (mainland).
Abstract:
BACKGROUND This study aimed to analyze the changes in plasmacytoid dendritic cell (pDC) immunophenotypes when co-cultured with Caski cells and stimulated by human papillomavirus (HPV) E6 in vitro, and thus to discuss the immunoregulatory roles of pDCs in the tumorigenesis of cervical cancer. MATERIAL AND METHODS The immunophenotypic expression of pDCs was analyzed under stimulation of HPV E6 and co-culturing with Caski cells in vitro. RESULTS HPV E6 infection caused significantly increased expression of CD40 in HPV16 M and HPV16 H groups MyD88 in HPV16 M,HPV16 H, and HPV18L groups; and TRAF6 in HPV16 M, HPV16 H, and HPV18L groups. pDCs co-cultured with Caski cells showed significantly lower expression of MyD88 and TRAF6 compared with the control. CONCLUSIONS The expression of MyD88 and TRAF6 might vary in different stages of HPV infection. pDCs might regulate CD40 to participate in the tumorigenesis and progression of cervical cancer, but related mechanisms still need further investigation.
