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Review article: immune suppression and colorectal cancer
C Evans1, A G Dalgleish, D Kumar
1Institution Colorectal Surgery Unit & Division of Oncology, St George's Hospital, Blackshaw Road, London, UK.
Alimentary Pharmacology & Therapeutics
|October 4, 2006
Summary
Colorectal cancer suppresses the immune system, negatively impacting patient survival. Immunotherapy shows promise in treating colorectal cancer, especially in early stages and as an adjunct to chemotherapy.
Area of Science:
- Immunology
- Molecular Biology
- Oncology
Background:
- Colorectal cancer (CRC) is immunogenic, with host immune responses influencing survival.
- Immune surveillance is often ineffective in preventing or controlling CRC tumor growth.
Purpose of the Study:
- To explore mechanisms of CRC-induced immune suppression.
- To analyze the impact of immune suppression on prognosis.
- To identify therapeutic strategies, particularly immunotherapy, for CRC.
Main Methods:
- Literature review of PubMed and Medline databases.
- Identification of relevant studies through reference lists.
Main Results:
- CRC induces immune suppression at molecular and cellular levels.
- Mechanisms affect both innate and adaptive immunity.
- Immune suppression is linked to poorer clinical outcomes in CRC patients.
Conclusions:
- CRC directly inhibits host immunity, worsening prognosis.
- Immunotherapy offers a promising strategy against CRC, with positive results in early-stage disease.
- Immunotherapy should be integrated into adjuvant trials for stage 2 CRC and combined with chemotherapy for advanced disease.
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