MMP1 and tuberculosis: Other agents also inhibit MMPs in vitro: prednisone – in patients with TB-IRIS – suppresses MMP-7 gene expression (Tadokera et al., 2014), vitamin D inhibits secretion of MMP-7 and -9 (Anand and Selvaraj, 2009; Coussens et al., 2009), and rapamycin (an mTOR-inhibitor and a known autophagy inducer that can also affect macrophage polarization (Mercalli et al., 2013)) inhibits MMP-1 and MMP-3 (Singh et al., 2014b).