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Article type: Research Article
Authors: Sepehr, Koushan Sineha; b | Baradaran, Behzada; b; * | Majidi, Jafarb; c | Abdolalizadeh, Jalalb; c | Aghebati, Leilib | Shahneh, Fatemeh Zareb; c
Affiliations: [a] Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran | [b] Immunology Research Center (IRC), Tabriz University of Medical Science, Tabriz, Iran | [c] Department of Immunology, Faculty of Medicine Sciences, Tabriz University of Medical Science, Tabriz, Iran
Correspondence: [*] Corresponding author: Behzad Baradaran, Assistant Professor of immunology, Assistant Professor of immunology, Immunology Research Center, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran. Tel.: +98 411 3364665; Fax: +98 411 3364665; E-mail behzad_im@yahoo.com.
Abstract: Background:Targeting CD20 antigen on B-lymphocytes provides good opportunity for management of the target cells in patients with B-cell malignancies. By the advent of hybridoma technology, monoclonal antibodies applications exert extensive changes in medical fields such as diagnosis, treatment and purification. Objective:The prim aim of this study was to produce monoclonal antibody against CD20 for exploitation in diagnosis. Methods:In this study, Balb/c mice were immunized with two peptides from extracellular domain of CD20. Poly Ethylene Glycol (PEG) fused spleen cells of the most immune mouse with SP2/0 (myeloma cells). Supernatant of hybridoma cells were screened for detection of antibody by ELISA. The desired clones were selected for limiting dilution (L.D). Afterward, specificity and cross reactivity of these antibodies were determined by immunological assay such as ELISA and western blot analysis (WB) and Immunofluorescence. Large scale of monoclonal antibodies was produced by ascetic fluid method. Monoclonal antibody was purified by chromatography then confirmed by SDS-PAGE. Results:In this study, between five positive clone wells, 3 clones were chosen for limiting dilution. Limiting dilution product was one monoclone with absorbance about 2. Conclusions:These results indicate that such monoclonal antibodies against CD20 can be used in diagnosis of CD20 in the cells surface.
Keywords: Monoclonal antibody, CD20, B-cell malignancies, immunoblotting, ELISA
DOI: 10.3233/HAB-130263
Journal: Human Antibodies, vol. 21, no. 3-4, pp. 57-64, 2012
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