Mitochondria as the central regulator of cell death in bronchopulmonary dysplasia

Area of Science:

• Neonatal respiratory medicine
• Cellular pathology
• Mitochondrial biology

Background:

• Bronchopulmonary dysplasia (BPD) is a chronic lung disease in preterm infants, marked by abnormal alveolar and vascular development.
• Oxidative stress and inflammation are known contributors to BPD pathogenesis.
• Existing research often examines these factors separately, lacking a unified mechanistic framework.

Purpose of the Study:

• To synthesize current knowledge on BPD pathogenesis, emphasizing mitochondrial dysfunction as a central integrating factor.
• To explore the role of various programmed cell death pathways (apoptosis, pyroptosis, necroptosis, autophagy, ferroptosis, cuproptosis) in BPD.
• To discuss potential therapeutic targets and biomarkers related to mitochondrial function and cell death in BPD.

Main Methods:

• Comprehensive literature review and critical analysis of existing studies on BPD.
• Synthesis of data linking hyperoxia, inflammation, mitochondrial damage, and cell death pathways.
• Exploration of the crosstalk between different cell death modalities.
• Evaluation of translational implications for BPD treatment and diagnosis.

Main Results:

• Mitochondrial dysfunction acts as a central hub, integrating oxidative stress and inflammation in BPD.
• Mitochondrial damage activates multiple programmed cell death pathways, contributing to lung injury.
• Crosstalk between these cell death pathways exacerbates alveolar simplification and vascular dysregulation in BPD.

Conclusions:

• A mitochondrial-centric view provides a unified framework for understanding BPD pathobiology.
• Targeting mitochondrial quality control and cell death pathways presents promising therapeutic avenues for BPD.
• Further research into novel biomarkers and interventions is warranted to mitigate BPD progression.