Abstract
AbstractErythrocyte membrane antigens have been detected on induced Friend erythroleukemic cells with a rabbit antiserum raised against mouse erythrocyte membranes. The antibody specificities of this antiserum have been quantitatively analyzed using a cellular radioimmunoassay. After absorption with thymocytes, the rabbit anti‐erythrocyte membrane serum bound to dimethylsulfoxide (DMSO)‐induced Friend erythroleukemic cells and to mouse erythrocytes but not to uninduced Friend cells or thymocytes. Reciprocal inhibition studies demonstrated that, following complete thymocyte absorption, the antiserum detected similar antigenic specificities, termed erythrocyte membrane antigens (EMA), on both mature erythrocytes and induced Friend cells.The expression of these erythrocyte membrane antigens was also induced on Friend cells by other agents, such as ouabain and dimethylacetamide (DMA). In contrast, exogenous hematin, which did not induce hemoglobin synthesis in the Friend cell clones used in this study, also did not induce erythrocyte membrane antigen expression.Two independently derived variant clones which do not produce hemoglobin in reponse to DMSO were analyzed for their ability to produce erythrocyte membrane antigens in response to various inducers of Friend cell differentiation. Clone TG‐13 is not inducible by DMSO or hematin but is weakly induced by DMA for both hemoglobin production and erythrocyte membrane antigen expression. Another variant clone, M18, was also analyzed. This clone does not synthesize detectable hemoglobin when grown in either DMSO or hematin alone, but undergoes extensive hemoglobin synthesis when grown in medium containing both DMSO and hematin. M18 does, however, express erythrocyte membrane antigens when grown in DMSO alone: the presence of hematin and DMSO together in the growth medium does not enhance expression of these antigens. Thus M18 appears to be defective for hemoglobin inducibility, and this defect can be overcome by exogenous hematin; however, the expression of erythrocyte membrane antigens is not affected by this block in hemoglobin synthesis. The results with the variant clones are discussed in terms of a program for Friend cell differentiation in which the induction of hemoglobin synthesis and erythrocyte membrane antigen expression are under both co‐ordinate and separate controls.
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Dates
Type | When |
---|---|
Created | 20 years, 6 months ago (Feb. 26, 2005, noon) |
Deposited | 1 year, 9 months ago (Nov. 12, 2023, 9:59 a.m.) |
Indexed | 1 year, 9 months ago (Nov. 12, 2023, 11:30 a.m.) |
Issued | 46 years, 11 months ago (Sept. 1, 1978) |
Published | 46 years, 11 months ago (Sept. 1, 1978) |
Published Online | 20 years, 6 months ago (Feb. 4, 2005) |
Published Print | 46 years, 11 months ago (Sept. 1, 1978) |
@article{MacDonald_1978, title={Erythrocyte membrane antigen expression during friend cell differentiation: Analysis of two non‐inducible variants}, volume={96}, ISSN={1097-4652}, url={http://dx.doi.org/10.1002/jcp.1040960304}, DOI={10.1002/jcp.1040960304}, number={3}, journal={Journal of Cellular Physiology}, publisher={Wiley}, author={MacDonald, Marcy E. and Letarte, Michelle and Bernstein, Alan}, year={1978}, month=sep, pages={291–301} }