Endoplasmic Reticulum Stress in Bronchopulmonary Dysplasia: Contributor or Consequence?

Area of Science:

• Neonatal Medicine
• Cellular Biology
• Pharmacology

Background:

• Bronchopulmonary dysplasia (BPD) is a major complication of prematurity, driven by oxidative stress and inflammation.
• Endoplasmic reticulum (ER) stress, triggered by oxidative stress, impairs cellular functions vital for lung development, including protein synthesis and metabolic homeostasis.
• ER stress contributes to BPD pathogenesis, leading to cellular senescence and impaired organ growth.

Purpose of the Study:

• To review the role of ER stress in the development of BPD.
• To discuss the therapeutic potential of chemical chaperones and N-acetyl-lysyltyrosylcysteine amide (KYC) in managing BPD.

Main Methods:

• Literature review focusing on the mechanisms of ER stress in BPD.
• Analysis of studies investigating chemical chaperones and KYC as therapeutic agents.
• Examination of evidence linking ER stress to cellular senescence in the context of BPD.

Main Results:

• ER stress is a key factor in BPD development, as demonstrated by animal models.
• Chemical chaperones can attenuate BPD but do not fully resolve ER stress-induced senescence.
• N-acetyl-lysyltyrosylcysteine amide (KYC), a myeloperoxidase inhibitor, effectively reduces ER stress and cellular senescence.

Conclusions:

• ER stress is a significant contributor to BPD pathogenesis.
• Chemical chaperones offer partial therapeutic benefits for BPD.
• KYC presents a promising therapeutic strategy for BPD by targeting ER stress and senescence.