PINK1 and chronic obstructive pulmonary disease: Consistently, insufficient mitophagy resulted in PTEN‐induced putative protein kinase 1 (PINK1) accumulation and parkin RBR E3 ubiquitin protein ligase reduction via PINK1‐mediated proteasomal degradation, which further accelerated insufficient mitophagy and ROS release, becoming a significant inducer of COPD pathogenesis.241