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Partial characterization of the E rosette restoring factor (RRF) from normal human serum
Archivum Immunologiae Et Therapiae Experimentalis
|January 1, 1979
Summary
A novel factor restoring E rosette formation was isolated. This immunomodulatory protein shows potential in treating tuberculosis by enhancing lymphocyte and bone marrow cell function.
Area of Science:
- Immunology
- Biochemistry
Background:
- E rosette formation is a key indicator of T-lymphocyte function.
- Pulmonary tuberculosis can impair immune cell function, including E rosette formation.
Purpose of the Study:
- To isolate and characterize a factor that restores E rosette formation.
- To investigate the potential therapeutic applications of this factor in immune dysfunction.
Main Methods:
- Isolation and purification of the factor using AMICON membranes and Sephadex G-150 chromatography.
- Assessment of the factor's activity on lymphocytes and bone marrow cells.
- Evaluation of the factor's stability under different temperature and freeze-thaw conditions.
Main Results:
- A factor restoring E rosette formation (RRF) was purified, with activity enhanced by Sephadex G-150 chromatography.
- RRF restored E rosette formation in lymphocytes from tuberculosis patients and stimulated bone marrow cells.
- The factor is thermolabile, inactivated at 56°C, sensitive to freezing/thawing, with a molecular weight of 10-20 kDa.
Conclusions:
- A novel RRF has been identified and characterized.
- This factor demonstrates potential as an immunomodulatory agent for conditions like pulmonary tuberculosis.
