MTOR and chronic obstructive pulmonary disease: This drug inhibits the activation of T and B-cells by inhibiting mTOR and plays an essential role in the biogenesis of the ribosome, cell cycle progression, lipid synthesis, mitochondrial biogenesis, and autophagy of COPD (Miłkowska-Dymanowska et al. 2017; Mukherjee and Mukherjee 2009).