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Published on: March 14, 2011
Subtractive antibody to a human immunosuppressive lymphokine affinity isolates a suppressive factor and blocks its
1Section of Immunology, Cleveland Clinic Foundation, OH 44195.
Immunopharmacology
|July 1, 1992
Summary
Researchers developed a subtractive antibody approach to isolate hybridoma suppressor factors (HSF). This method successfully purified HSF, revealing specific proteins responsible for suppressing immune cell activity.
Area of Science:
- Immunology
- Molecular Biology
- Biochemistry
Background:
- Hybridoma suppressor factors (HSF) inhibit immunoglobulin (Ig) and interleukin-2 (IL-2) synthesis.
- Characterization of HSF is crucial for understanding immune regulation.
Purpose of the Study:
- To develop a method for isolating and characterizing HSF.
- To generate specific antibodies against HSF for purification.
Main Methods:
- Subtractive antibody generation using hybridoma parent cell line (CEM) products.
- Immunoaffinity chromatography with anti-CEM and anti-HSF antibodies.
- Enzyme immunoassay (EIA) for antibody monitoring.
- Western blot analysis for protein identification.
Main Results:
- Partially purified HSF retained suppressive activity.
- Affinity-purified HSF showed 50-fold higher specific activity than partially purified HSF.
- Western blots identified specific HSF bands at 10 kDa and 12 kDa.
Conclusions:
- A subtractive antibody strategy effectively purified HSF.
- Specific HSF proteins were detected and separated within the predicted size range.
- This purification method aids in the characterization of suppressive lymphokines.
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