Journal
REDOX BIOLOGY
Volume 33, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.redox.2020.101509
Keywords
Fibrosis; Aging; Mitochondrial dysfunction; Epithelial cells; Fibroblast; Macrophage
Categories
Funding
- National Institutes of Health [R01 HL131789-03, R01 HL149825, 5 R01 HL123766-04, U01 HL145550-01]
- Aging Institute at the University of Pittsburgh
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Idiopathic pulmonary fibrosis (IPF) is a devastating lung disease of unknown etiology. It is characterized by deposition of extracellular matrix proteins, like collagen and fibronectin in the lung interstitium leading to respiratory failure. Our understanding of the pathobiology underlying IPF is still incomplete; however, it is accepted that aging is a major risk factor in the disease while growing evidence suggests that the mitochondria plays an important role in the initiation and progression of pulmonary fibrosis. Mitochondria dysfunction and metabolic reprogramming had been identified in different IPF lung cells (alveolar epithelial cells, fibroblasts, and macrophages) promoting low resilience and increasing susceptibility to activation of profibrotic responses. Here we summarize changes in mitochondrial numbers, biogenesis, turnover and associated metabolic adaptations that promote disrepair and fibrosis in the lung. Finally, we highlight new possible therapeutic approaches focused on ameliorate mitochondrial dysfunction.
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