Abstract
Inhibitors of the enzymatic activity of alanyl-aminopeptidases severely affect growth and typical functions of human peripheral T cells both in vitro and in vivo. The most prominent changes observed include the activation of cellular signal transduction pathways such as MAP kinases Erk1/2 or the Wnt-pathway, a decrease of production and release of “pro-inflammatory” cytokines (IL-2, IL-12) and, most importantly, an induction of expression and release of the immunosuppressive cytokine, TGF-β1. Similar effects on T cell proliferation and function have been observed in response to inhibition of DPIV, which is strongly suggestive of a functional synergism of APN and DPIV. In support of this hypothesis evidence is provided showing that the simultaneous application of inhibitors of DPIV and APN further enhances the anti-inflammatory and immunosuppressive effects provoked by the inhibition of APN or DPIV alone. Therefore, the simultaneous inhibition of these enzymes represents a promising strategy for the pharmacological therapy of T cell mediated diseases such as autoimmune disease, inflammation, allergy, and allograft rejection.
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Lendeckel, U. et al. (2004). Synergistic Action of DPIV and APN in the Regulation of T Cell Function. In: Back, N., Cohen, I.R., Kritchevsky, D., Lajtha, A., Paoletti, R. (eds) Dipeptidyl Aminopeptidases in Health and Disease. Advances in Experimental Medicine and Biology, vol 524. Springer, Boston, MA. https://doi.org/10.1007/0-306-47920-6_16
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DOI: https://doi.org/10.1007/0-306-47920-6_16
Publisher Name: Springer, Boston, MA
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