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Erschienen in: Journal of Cancer Research and Clinical Oncology 9/2003

01.09.2003 | Original Paper

Dendritic cell-based tumor vaccine for cervical cancer II: results of a clinical pilot study in 15 individual patients

verfasst von: Alfonso Ferrara, Marion Nonn, Peter Sehr, Carola Schreckenberger, Michael Pawlita, Matthias Dürst, Achim Schneider, Andreas M. Kaufmann

Erschienen in: Journal of Cancer Research and Clinical Oncology | Ausgabe 9/2003

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Abstract

Purpose

Human papillomavirus (HPV) type 16 and 18 are the most prevalent genotypes in cervical cancer. The viral oncoproteins E6 and E7 are considered to be tumor-specific targets for immunotherapy. HPV E7 antigen-loaded autologous dendritic cells (DC) were evaluated as cellular tumor vaccine in a case series of cervical cancer patients.

Methods

Autologous monocyte-derived DCs were pulsed with recombinant HPV16 E7 or HPV18 E7 oncoprotein and administered to 15 stage IV cervical cancer patients. Safety, toxicity, and induction of serological and cellular immune responses were monitored.

Results

The vaccine was well-tolerated and no local or systemic side effects or toxicity were recorded. A specific serologic response was seen in 3/11 evaluated patients. Specific cellular immune responses (4/11) were detected with 2/10 positive de novo reactions plus one boosted preexistent response in proliferation assays and 3/11 in IFN-γ ELISpot assays. A transient drop in tumor marker SCC was observed in 5/9 evaluable patients but did not correlate with markers of the immune response. No objective clinical response was observed. Tumor biopsies available from four patients showed severe or complete loss of HLA expression in three of the advanced tumors.

Conclusion

Autologous dendritic cells pulsed with HPV E7 protein can induce T cell responses in a portion of late stage cervical cancer patients. Boosting of immune responses by adjuvants and vaccination of tumor HLA-positive patients will be mandatory in future trials.
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Metadaten
Titel
Dendritic cell-based tumor vaccine for cervical cancer II: results of a clinical pilot study in 15 individual patients
verfasst von
Alfonso Ferrara
Marion Nonn
Peter Sehr
Carola Schreckenberger
Michael Pawlita
Matthias Dürst
Achim Schneider
Andreas M. Kaufmann
Publikationsdatum
01.09.2003
Verlag
Springer-Verlag
Erschienen in
Journal of Cancer Research and Clinical Oncology / Ausgabe 9/2003
Print ISSN: 0171-5216
Elektronische ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-003-0463-5

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