Abstract
Mitogen activation of human peripheral lymphocytes leads to a switch in the isozymes of LDH; resting cells contain low activities of only the B4 and B3A forms, whereas activated cells contain high activities of the A4 and A3B forms. B4 LDH is not altered in activated cells. In this study we show that the appearance of the A subunits occurs concomitantly with a several fold increase in the steady state levels of LDH-A mRNA. Responses in LDH-A mRNA are observed within 12 hrs of activation, and are, thus, associated with the G0/G1 transition or with early G1 (Marjanovicet al. Exp. Cell Res. (1991) 193: 425–431). Maximal expression of LDH-A mRNA requires both phorbol ester and concanavalin A, implying a complex regulatory pathway involving cascade systems activated through both the antigen receptor (TR) and protein kinase C.
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Wollberg, P., Dean Nelson, B. Regulation of the expression of lactate dehydrogenase isozymes in human lymphocytes. Mol Cell Biochem 110, 161–164 (1992). https://doi.org/10.1007/BF02454193
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DOI: https://doi.org/10.1007/BF02454193