國家衛生研究院 NHRI:Item 3990099045/6563

NHRI > National Institute of Infectious Diseases and Vaccinology > Shih-Jen Liu > Periodical Articles > Item 3990099045/6563

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Title:	Recombinant lipidated HPV E7 induces a Th-1-biased immune response and protective immunity against cervical cancer in a mouse model
Authors:	Huang, CY;Chen, JJW;Shen, KY;Chang, LS;Yeh, YC;Chen, IH;Chong, P;Liu, SJ;Leng, CH
Contributors:	Division of Vaccine Research and Development
Abstract:	The E7 oncoprotein of human papillomavirus (HPV) is an ideal target for developing immunotherapeutic strategies against HPV-associated tumors. However, because protein-based immunogens alone are poor elicitors of the cytotoxic T-lymphocyte (CTL) responses, they have been difficult to exploit for therapeutic purposes. In this study, we report that a recombinant lipoprotein consisting of inactive E7 (E7m) biologically linked to a bacterial lipid moiety (rlipo-E7m) induces the maturation of mouse bone marrow-derived dendritic cells through toll-like receptor 2 (TLR2), skews the immune responses toward the Th1 responses and induces E7-specific CTL responses. We further studied the ability of rlipo-E7m to provide protection against a TC-1 tumor cell challenge in an animal model. Mice prophylactically immunized with two 10-?g doses of rlipo-E7m were found to be free of TC-1 tumor growth. Experiments in a therapeutic immunization model showed that the tumor volume in mice receiving a single dose of rlipo-E7m was less than 0.01 cm3 on day 40, whereas the tumor volume in mice treated with rE7m was 2.28?1.21 cm3. The tumor volume of the entire control group was over 3 cm3. In addition, we demonstrated that the CD8+ T cells play a major role in anti-tumor immunity when administration of rlipo-E7m. These results demonstrate that rlipo-E7m could be a promising candidate for treating HPV-associated tumors.
Date:	2012-07
Relation:	PLoS ONE. 2012 Jul;7(7):Article number e40970.
Link to:	http://dx.doi.org/10.1371/journal.pone.0040970
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1932-6203&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000306548900065
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84863998596
Appears in Collections:	[Shih-Jen Liu] Periodical Articles [Chih-Hsiang Leng] Periodical Articles [Pele Choi-Sing Chong] Periodical Articles

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