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Immunosupressive activity of the basic protein from tumor tissue
Gan
|December 1, 1977
Summary
A basic protein from tumor cells was found to suppress the cell-mediated immune response in rats. This immunosuppression may explain inadequate immune responses observed in tumor-bearing hosts.
Area of Science:
- Immunology
- Oncology
Background:
- Tumor cells can produce factors that influence the host's immune system.
- The cell-mediated immune response is crucial for controlling tumor growth.
Purpose of the Study:
- To investigate the effect of a basic protein from AH-130 ascites hepatoma cells on the cell-mediated immune response in rats.
Main Methods:
- Preparation of basic protein from AH-130 ascites hepatoma cells.
- Assessment of the protein's effect on peripheral and lymph node lymphocytes' response to phytohemagglutinin.
- Evaluation of lymphocyte trapping in antigen-draining lymph nodes.
Main Results:
- The basic protein significantly suppressed lymphocyte responses to phytohemagglutinin.
- Lymphocyte trapping in antigen-draining lymph nodes was also inhibited.
- These findings suggest an immunosuppressive role for the tumor-derived basic protein.
Conclusions:
- The basic protein isolated from AH-130 ascites hepatoma exhibits immunosuppressive activity.
- This activity may contribute to the impaired cell-mediated immunity observed in tumor-bearing individuals.
- Further research is warranted to elucidate the precise mechanisms of this immunosuppression.