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Production and Purification of Anti-Rhombomys Opimus Immunoglobulins

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Author(s): AA Akhavan | R Ghods | M Jeddi-Tehrani | MR Yaghoobi-Ershadi | A Khamesipour | AR Mahmoudi

Journal: Iranian Journal of Arthropod-Borne Diseases
ISSN 1735-7179

Volume: 5;
Issue: 2;
Start page: 69;
Date: 2011;
Original page

Keywords: Rhombomys Opimus | Polyclonal Antibody | Zoonotic Cutaneous Leishmaniasis | Immunoglobulin | Iran

ABSTRACT
Background: Zoonotic cutaneous leishmaniasis (ZCL) is an increasing public health problem in some endemic re­gions. Horseradish peroxidase (HRP) conjugated rabbit anti-Rhombomys opimus (R. opimus) Ig is needed for im­munoblotting and ELISA tests used to explore the immune response of the rodents against the sand fly saliva. In this study, the production of HRP conjugated rabbit anti-R. opimus Ig was conducted for the first time.Methods: Rhombomys opimus Ig was purified from serum by protein G affinity chromatography column and in­jected into rabbit to produce anti-R. opimus Ig antibody. The titration of antibody against R. opimus Ig in rabbit se­rum was checked using indirect ELISA. Rabbit anti-R. opimus Ig was purified by Sepharose-4B-R. opimus Ig column. Re­activity of this antibody was assessed by indirect ELISA and was conjugated to HRP by periodate method.Results: Approximately 3.5 mg Ig was purified from 1 ml R. opimus serum using protein G affinity chromatography col­umn. The molecular weight of purified R. opimus Ig was estimated about 150 kDa by SDS-PAGE. Nearly 2.3 mg rab­bit anti-R. opimus Ig was purified from 1 ml immunized rabbit serum. The purified antibody was conjugated to HRP and the optimum titer of HRP conjugated rabbit anti-R. opimus Ig was determined as 1:8000 using direct ELISA.Conclusion: HRP conjugated rabbit anti-Gerbil IgG has been produced by a few companies, but to our knowledge HRP conjugated rabbit anti-R. opimus Ig is not commercially available. Production of HRP conjugated rabbit anti-R. opimus Ig is considerably helpful for immunological studies of R. opimus, the main reservoir host of ZCL in Iran as well as some other countries.
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