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Mischo, A; Bubel, N; Cebon, J S; Samaras, P; Petrausch, U; Stenner-Liewen, F; Schaefer, N G; Kubuschok, B; Renner, C; Wadle, A (2011). Recombinant NY-ESO-1 protein with ISCOMATRIX adjuvant induces broad antibody responses in humans, a RAYS-based analysis. International Journal of Oncology, 39(1):287-294.

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Antibody responses to tumor antigens play an important role in initiating a cellular antitumor response with respect to antigen cross-presentation and T cell cross-priming. Successful vaccination strategies rely on an optimally timed activation of the humoral and cellular immune system by using appropriate adjuvant stimulation. The LUD99-008 trial used the cancer testis antigen NY-ESO-1 formulated with ISCOMATRIX adjuvant injected into patients intramuscularly. It was shown that this vaccination strategy is a safe and highly potent activator of the humoral and cellular immune system. Using the RAYS technology, we analyzed in detail the humoral immune response in these patients before and after vaccination: during the course of repeated vaccinations with the adjuvant, antibody titers against NY-ESO-1 and cross-reactivity to LAGE 1A and B increased as an indicator of an enhanced immune response, whereas no antibody response could be detected after vaccination without the adjuvant. Analysis of single fragments of the NY-ESO-1 protein revealed that the humoral response was almost exclusively directed against the N-terminal fragments and the number of fragments and their length being recognized by the NY-ESO-1-specific antibodies increased during the course of vaccination. The humoral immune response mainly consisted of antibodies of the IgG1 and IgG3 subclass. We rarely found IgG2 and IgG4 subclass antibodies. Our results support the implication that target-specific antibodies raised after vaccination contribute to the stimulation of an effective T cell response against the target antigen.


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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Nuclear Medicine
Dewey Decimal Classification:610 Medicine & health
Deposited On:04 Mar 2012 10:04
Last Modified:05 Apr 2016 15:36
Publisher:Spandidos Publications
Publisher DOI:10.3892/ijo.2011.1032
PubMed ID:21573493

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