Journal
EXPERT OPINION ON BIOLOGICAL THERAPY
Volume 10, Issue 5, Pages 735-748Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1517/14712591003769790
Keywords
cancer vaccines; immunotherapy; T cell avidity; tumour environment
Funding
- University of Nottingham and Scancell Ltd
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Importance of the field: Considerable progress has been made in identifying the antigens recognised by the immune system. This has led to the success of monoclonal antibody therapy and the recent approval of prophylactic vaccines that give excellent protection against cervical cancer. Provenge will shortly be the first therapeutic vaccine to be approved. Areas covered in this review: Our aim is to discuss the recent success with prophylactic cancer vaccines for prevention of cancer and the progress with therapeutic vaccines design to eradicate established tumours. Therapeutic vaccines need to stimulate high-avidity T cell responses that can recognise and kill tumours. How this can be achieved in cancer patients is discussed. The immunosuppressive tumour environment also needs to be modified to allow extravasation and efficacy of the vaccine induced T cells. What the reader will gain: An insight into the limitations of present cancer vaccine approaches and how they can be manipulated to give more effective anti-tumour responses. Take home message: A combination of more effective vaccines that stimulate high-avidity T cells, in combination with drugs or monoclonal antibodies that neutralize immunosuppressive factors within the tumour environment are needed to improve the efficacy of immunotherapy of cancer.
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