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A Novel mAb against a Human CD34 Peptide Reacts with the Native Protein on CD34+ Cells | ||
Iranian Journal of Immunology | ||
مقاله 7، دوره 10، شماره 4، اسفند 2013، صفحه 259-266 اصل مقاله (485.51 K) | ||
نوع مقاله: Applied Immunology Series | ||
نویسندگان | ||
Mahmood Shams1، 2؛ Mahmood Jeddi-Tehrani3؛ Farzaneh Notash Haghighat3؛ Ali Ahmad Bayat3؛ Jafar Mahmoudian3؛ Mohammad Reza Rezvani* 1، 2، ، 4 | ||
1Department of Hematology, Faculty of Allied Medicine, Tehran University of Medical Sciences | ||
2Department of Hematology, Faculty of Allied Medicine, Iran University of Medical Sciences | ||
3Monoclonal Antibody Research Center, Avicenna Research Institute, ACECR, Tehran, Iran | ||
4Immune and Gene Therapy Laboratory, Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden | ||
چکیده | ||
Background: Human CD34 is a transmembrane glycoprotein which is expressed in human hematopoietic stem cells (HSCs) and the small- vessel endothelial cells of a variety of tissues. CD34 plays a critical role as a marker for diagnosis and classification of leukemia. Anti CD34 antibodies are used for isolation and purification of HSCs from bone marrow, peripheral blood and cord blood. Objective: To characterize a newly produced monoclonal antibody against a human CD34 peptide. Methods: Anti CD34 monoclonal antibody (Clone 2C10-D3) was purified from mouse ascitic fluid and hybridoma cell culture supernatants by affinity chromatography and its immune reactivity was examined by ELISA. The purified antibody was further characterized using Western blot and flow cytometry on TF1 (Human Erythroblast) cell line. Results: ELISA experiment revealed that the antibody recognized CD34 peptide. Western blot analysis on TF1 cell lysate confirmed the reactivity of the antibody with a 42 KDa protein. Blocking the antibody with a saturating concentration of specific CD34 peptide resulted in loss of its activity with TF1 lysate in Western blot. The 2C10-D3 antibody reacted with TF1 cells in flow cytometry in a similar manner to a commercial anti CD34 monoclonal antibody. Conclusions: Our data suggest that the anti CD34 monoclonal antibody (Clone 2C10-D3) is an appropriate antibody to study the CD34+ cells by flow cytometry and Western blot. | ||
کلیدواژهها | ||
CD34؛ ELISA؛ Flow cytometry؛ Monoclonal antibody؛ Western blotting | ||
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