TNF	Tumor necrosis factor
IL	Interleukin
SASP	Senescence-associated secretory phenotype
ECM	Extracellular matrix
COPD	Chronic obstructive pulmonary disease
IPF	Idiopathic pulmonary fibrosis
SAβGAL	Senescence-associated β-galactosidase
TGF-β1	Transforming growth factor-β1
IGFBP	Insulin-like growth factor 1 binding protein
CDK	Cyclin-dependent kinase
NF-κB	Nuclear factor-κB
MMP	Matrix metalloproteinase
AEC	Alveolar epithelial cell
TLR	Toll like receptor
SIRT1	Sirtuin 1
TRF	Telomere repeat binding factor
PINK1	PTEN-induced putative kinase 1