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  • Title: Monoclonal antibody to chicken fetal antigen on Marek's disease lymphoblastoid cell line MDCC-MSB1.
    Author: Ohashi K, Mikami T, Higashihara T, Kodama H, Izawa H.
    Journal: Cancer Res; 1986 Nov; 46(11):5858-63. PubMed ID: 2428485.
    Abstract:
    A monoclonal antibody (2H3) to chicken fetal antigen (CFA) expressed on the cell surface of the Marek's disease lymphoblastoid cell line MDCC-MSB1 was generated. 2H3 reacted specifically with various cells from chicken embryos, especially with fetal red blood cells, fetal bursa-derived lymphocytes, fetal liver cells, and embryo fibroblasts but not with fetal peripheral blood lymphocytes. 2H3 reacted also with all lymphoblastoid cell line cells tested: Marek's disease, avian leukosis, and reticuloendotheliosis line cells. On the basis of 2H3 specificity, CFA detected by 2H3 seemed to be similar to chicken fetal red blood cell antigen previously reported, but not to chicken alpha-fetoprotein. A transient increase of reactivities with 2H3 was observed in lymphocytes prepared from thymus, spleen, and bursa of chickens inoculated with Marek's disease virus or herpesvirus of turkeys from 7 to 21 days postinoculation. The average percentage of CFA-positive cells in lymphoid cells from Marek's disease virus-infected chickens at the peaks was higher than that of the cells in Marek's disease tumor cells from 146- and 156-day-old chickens in the field. The results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western blotting analysis revealed that the monoclonal 2H3 is recognized a Mr 50,000 oncodevelopmental cell surface antigen present on MDCC-MSB1 cells. The possible differences between CFA detected by 2H3 and chicken fetal red blood cell antigen expressed on normal chicken fetal erythrocytes are discussed.
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