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Immune escape of tumors: apoptosis resistance and tumor counterattack
Frederik H Igney1, Peter H Krammer
1Tumor Immunology Program, German Cancer Research Center (DKFZ), Heidelberg, Germany.
Abstract:
Interactions between the immune system and malignant cells play an important role in tumorigenesis. Failure of the immune system to detect and reject transformed cells may lead to cancer development. Tumors use multiple mechanisms to escape from immune-mediated rejection. Many of these mechanisms are now known on a cellular and molecular level. Despite this knowledge, cancer immunotherapy is still not an established treatment in the clinic. This review discusses the immune escape mechanisms used by tumors with an emphasis on mechanisms related to apoptosis.
Insights
Tumors evade immune detection through various mechanisms, hindering effective cancer immunotherapy. This review focuses on how tumors exploit apoptosis to escape immune surveillance and rejection.
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- Immune system interactions with malignant cells are crucial in cancer development.
- Tumorigenesis involves the failure of immune surveillance to detect and eliminate transformed cells.
- Tumors employ diverse strategies to evade immune-mediated rejection.
Purpose of the Study:
- To review tumor immune escape mechanisms.
- To emphasize apoptosis-related mechanisms in tumor immune evasion.
- To provide insights into challenges for cancer immunotherapy.
Main Methods:
- Literature review of cellular and molecular mechanisms of tumor immune escape.
- Focus on apoptosis pathways utilized by tumors.
- Analysis of current understanding and clinical limitations of cancer immunotherapy.
Main Results:
- Tumors utilize multiple sophisticated mechanisms to avoid immune detection and destruction.
- Apoptosis evasion is a significant strategy employed by malignant cells.
- Detailed knowledge of these mechanisms has not yet translated into widespread clinical immunotherapy success.
Conclusions:
- Understanding tumor immune escape, particularly apoptosis-related pathways, is critical.
- Overcoming these evasion tactics is essential for advancing cancer immunotherapy.
- Further research is needed to translate molecular insights into effective clinical treatments.