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A rapid and efficient purification method for horse IgG(T) using a rat monoclonal antibody
I Fernandes1, F Cormont, D Latinne
1Laboratório de Imunopatologia, Instituto Butantan, São Paulo, Brasil.
Summary
Researchers developed a rapid method to isolate pure horse immunoglobulin G (IgG) using a specific rat monoclonal antibody (mAb). This technique offers a fast and efficient way to obtain highly purified IgG for various applications.
Area of Science:
- Immunology
- Biochemistry
- Protein Chemistry
Background:
- Monoclonal antibodies (mAbs) are crucial tools in biological research and diagnostics.
- Efficient purification of specific immunoglobulin G (IgG) subclasses is essential for various applications.
Purpose of the Study:
- To develop a rapid and efficient method for purifying horse immunoglobulin G (IgG(T)).
- To generate a specific rat monoclonal antibody (mAb) targeting horse IgG(T).
Main Methods:
- Generation of hybridomas by fusing Louvain rat lymph node cells with IR983F immunocytoma.
- Screening of hybridoma supernatants using Enzyme-Linked Immunosorbent Assay (ELISA).
- Purification of mAb using Sepharose anti-rat LOU IgK-1a chain column.
- Coupling of purified mAb to Sepharose for IgG(T) purification.
Main Results:
- A specific anti-horse IgG(T) mAb, LO-HoGT-1 (IgG2a), was generated with an affinity constant of 2.9 x 10(10) M-1.
- Purified LO-HoGT-1 mAb was coupled to Sepharose.
- Horse serum passed through the mAb-Sepharose column yielded immunoelectrophoretically pure IgG(T) in under 30 minutes.
Conclusions:
- A novel and rapid method for purifying horse IgG(T) was established using a specific rat mAb.
- The developed technique provides highly purified IgG(T) efficiently and quickly.
- This method has significant implications for research and diagnostic applications requiring pure horse IgG(T).