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Strategies to overcome immune ignorance and tolerance
Miguel-Angel Perales1, Nathalie E Blachere, Manuel E Engelhorn
1Memorial Sloan-Kettering Cancer Center and Weill Medical School and Graduate School of Cornell University, New York, NY 10021, USA. peralesm@mmskcc.org
Abstract:
Cancer poses a difficult problem for immunotherapy because it arises from the host's own tissues. Many of the target antigens are tissue-specific molecules shared by cancer cells and normal cells. Thus, these are weak antigens that do not typically elicit immunity. In addition, tumors have several features that make their recognition and destruction by the immune system difficult. Despite these obstacles, several strategies for developing effective tumor immunity have been developed. Crucial to these approaches is the discovery and understanding of the molecular identity of antigens and the mechanisms involved in tumor immunity. In this review, strategies to overcome immune ignorance and tolerance are discussed.
Insights
Cancer immunotherapy faces challenges due to self-originating tissues and weak antigens. This review explores strategies to overcome immune tolerance and ignorance for effective tumor immunity.
Area of Science:
- Immunology
- Oncology
- Cancer Research
Background:
- Cancer immunotherapy is hindered because tumors originate from the host's own tissues.
- Shared tissue-specific antigens between normal cells and cancer cells are often weak, failing to elicit a strong immune response.
- Tumor microenvironments possess features that impede immune system recognition and destruction.
Purpose of the Study:
- To review strategies for developing effective tumor immunity.
- To discuss approaches for overcoming immune ignorance and tolerance in cancer.
- To highlight the importance of understanding tumor antigens and immunity mechanisms.
Main Methods:
- Literature review of current research on cancer immunotherapy.
- Analysis of strategies to enhance anti-tumor immune responses.
- Discussion of molecular antigen identification and immune mechanisms.
Main Results:
- Identification of key obstacles in cancer immunotherapy, including self-antigens and tumor evasion mechanisms.
- Overview of developed strategies to elicit and enhance anti-tumor immunity.
- Emphasis on the critical role of understanding antigen identity and immune pathways.
Conclusions:
- Overcoming immune ignorance and tolerance is crucial for successful cancer immunotherapy.
- Continued research into tumor antigens and immune mechanisms is vital for therapeutic advancements.
- Developing effective strategies requires a deep understanding of the complex interplay between cancer and the immune system.