alexa Telomerase Cancer Vaccines
ISSN: 2155-6121

Journal of Allergy & Therapy
Open Access

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11th International Conference on ALLERGY, ASTHMA & CLINICAL IMMUNOLOGY
September 07-08, 2017 | Edinburgh, Scotland

Gilberto Filaci
University of Genoa, Italy
ScientificTracks Abstracts: J Allergy Ther
DOI: 10.4172/2155-6121-C1-005
Abstract
Telomerase, the enzyme synthesizing the telomeric regions of chromosomes, is considered as a universal tumor associated antigen because it is expressed by the majority of cancers. The several clinical trials performed adopting telomerase as immunogen confirmed the safety of telomerase vaccination, but raised doubts concerning: the immunogenicity of telomerase; the capacity of telomerase vaccines of inducing clinical responses. The immunogenicity concerns have been now dispelled by demonstrations that: Telomerase is presented by tumor and antigen presenting cells; ex vivo generated telomerase-specific CTL kills efficiently telomeraseexpressing tumors; circulating telomerase-specific T cells are present in 90% of cancer patients and, surprisingly, in 100% of healthy individuals, as observed in studies. These findings boost the search for a new generation of telomerase vaccines able to overcome the limits of their first generation. In this effort, our group recently completed a phase I/II trial in prostate and renal cancer patients with GX301, a new generation cancer vaccine. This multi-peptidic vaccine includes four telomerase peptides, which bind promiscuously several HLA class I and II alleles allowing the coverage of the majority of HLA haplotypes and the induction of both helper and cytotoxic T cell responses. It also contains two adjuvants with complementary activities, making it able to efficiently activate both innate and adoptive immune responses. The results of a phase I/II trial, showing a 100% rate of telomerase-specific immune responses associated with evidences of clinical responses, suggest that innovative approaches may lead telomerase (and cancer) vaccination to an age of maturity.
Biography

Gilberto Filaci is an Associate Professor of Internal Medicine and Vice-Director of the Centre of Excellence for Biomedical Research at University of Genoa. He has published more than 90 papers in reputed journals and has been serving as Official Reviewer for international journals and research funding organizations. His scientific activity is mainly focused on Immuno-regulation and on the search for new diagnostic and immunotherapeutic agents. He is in the advisory board of pharmaceutics industries.

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