The regulation of sodium-dependent transport of anionic amino acids in cultured human fibroblasts (original) (raw)

In cultured human fibroblasts the transport of anionic amino acids through the sodium-dependent system Xi, is stimulated rapidly and transiently by phorbol 12,13-dibutyrate. Transport stimulation is consistent with an effect due to the activation of protein kinase C. Bradykinin (1 PM) and PDGF-AA (100 &ml) also stimulate the activity of system Xi,. The bradykinin effect appears to be fully dependent upon PKC activation whereas the stimulation of aspartate transport by PDGF-AA is also due to PKC-independent mechanisms.