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Alterations in T cells of cancer-bearers: whence specificity?
1Dept of Biological Sciences, Fordham University, Bronx, NY 10458, USA. Levey@murray.fordham.edu
Immunology Today
|August 1, 1996
Abstract:
T cells of tumor-bearing mice and cancer patients have been reported to have altered signal-transduction machinery. These alterations have been implicated in immunological suppression. Here, Daniel Levey and Pramod Srivastava critically examine the evidence for these alterations in the context of the tumor specificity of immunological unresponsiveness in tumor-bearing hosts.
Insights
Altered T cell signaling in cancer may cause immune suppression. This review examines evidence for tumor-specific immune unresponsiveness in cancer patients and mice.
Area of Science:
- Immunology
- Cancer Biology
- Signal Transduction
Background:
- T cells play a crucial role in anti-tumor immunity.
- Tumor-bearing hosts often exhibit suppressed immune responses.
- Altered T cell signaling pathways have been proposed as a mechanism for this suppression.
Purpose of the Study:
- To critically evaluate the evidence linking altered T cell signal-transduction machinery to immune suppression in cancer.
- To assess the tumor specificity of immunological unresponsiveness in tumor-bearing hosts.
Main Methods:
- Critical review of existing scientific literature.
- Analysis of studies investigating T cell signaling in tumor models and cancer patients.
Main Results:
- Evidence suggests alterations in T cell signaling machinery occur in tumor-bearing hosts.
- These alterations are implicated in the development of immune suppression.
- The specificity of these alterations to the tumor microenvironment requires further investigation.
Conclusions:
- Altered T cell signaling is a significant factor in cancer-induced immune suppression.
- Understanding the tumor specificity of these signaling changes is crucial for developing effective immunotherapies.