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Updated: May 26, 2026

Fluorescence Assays for the Study of Mycobacterium tuberculosis Interaction with the Immune Receptor SLAMF1
Published on: February 28, 2025
Inhibition of Mycobacterium tuberculosis-induced signalling by transforming growth factor-β in human mononuclear
M Wu1, H Aung, C S Hirsch
1Case Western Reserve University Veterans Affairs Medical Center, Cleveland, OH, USA.
Abstract:
Tuberculosis (TB) is associated with excessive production and bioactivation of transforming growth factor bets (TGF-β) in situ. Here, modification of expression of components of plasminogen/plasmin pathway in human monocytes (MN) by inhibitors of TGF-β signalling was examined. Smad3 siRNA effectively inhibited TGF-β-induced urokinase plasminogen activator receptor (uPAR). Agents known to interfere with TGF-β signalling, including the Smad inhibitors SIS3 and erythromycin derivatives, and ALK5 receptor inhibitor (SB 431542) in inhibition of uPAR expression in response to Mycobacterium tuberculosis (MTB) were examined. Inhibition by SIS3 only inhibited uPAR mRNA significantly. SIS3 may prove to be an effective adjunct to TB therapy.
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