Preparation of goat and rabbit anti-camel immunoglobulin G whole molecule labeled with horseradish peroxidase. 2017

Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
Department of Parasitology and Animal Diseases, National Research Centre, Egypt.

OBJECTIVE As the labeled anti-camel immunoglobulins (Igs) with enzymes for enzyme-linked immunosorbent assay (ELISA) are unavailable in the Egyptian market, the present investigation was directed for developing local labeled anti-camel IgG with horseradish peroxidase (HRP) to save hard curacy. METHODS For purification of camel IgG whole molecule, camel sera was preliminary precipitated with 50% saturated ammonium sulfate and dialyzed against 15 mM phosphate-buffered saline pH 7.2 then concentrated. This preparation was further purified by protein A sepharose affinity column chromatography. The purity of the eluted camel IgG was tested by sodium dodecyl sulfate polyacrylamide gel electrophoresi. Anti-camel IgG was prepared by immunization of goats and rabbits separately, with purified camel IgG. The anti-camel IgG was purified by protein A sepharose affinity column chromatography. Whole molecule anti-camel IgG was conjugated with HRP using glutraldehyde based assay. Sensitivity and specificity of prepared conjugated secondary antibodies were detected using positive and negative camel serum samples reacted with different antigens in ELISA, respectively. The potency of prepared conjugated antibodies was evaluated compared with protein A HRP. The stability of the conjugate at -20°C during 1 year was assessed by ELISA. RESULTS The electrophoretic profile of camel IgG showed four bands of molecular weight 63, 52, 40 and 33 kDa. The recorded sensitivity and specificity of the product are 100%. Its potency is also 100% compared to 58-75% of commercial protein A HRP. The conjugates are stable for 1 year at -20°C as proved by ELISA. CONCLUSIONS Collectively, this study introduces goat and rabbit anti-camel IgG whole molecules with simple, inexpensive method, with 100% sensitivity, 100% specificity and stability up to 1 year at -20°C. The important facet of the current study is saving hard curacy. Future investigations are necessary for preparation of IgG subclasses.

UI MeSH Term Description Entries

Related Publications

Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
January 1994, Methods in molecular biology (Clifton, N.J.),
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
August 1996, Molecular biotechnology,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
January 1991, Prikladnaia biokhimiia i mikrobiologiia,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
April 2019, Cold Spring Harbor protocols,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
June 2006, CSH protocols,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
June 2006, CSH protocols,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
June 1979, Medical biology,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
January 1969, Pathologia et microbiologia,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
June 2006, CSH protocols,
Eman Hussein Abdel-Rahman, and Jakeen Kamal El-Jakee, and Mahmoud Essam Hatem, and Nagwa Sayed Ata, and Ehab Ali Fouad
January 1975, Advances in neurology,
Copied contents to your clipboard!