Mitochondrial dynamics in the neonatal brain - a potential target following injury?

Area of Science:

• Neuroscience
• Cell Biology
• Biochemistry

Background:

• Birth asphyxia can lead to hypoxic-ischaemic (HI) brain injury, a condition with severe, long-term consequences for infants and families.
• Current treatments like therapeutic hypothermia have limitations and are not accessible globally.
• Mitochondrial dysfunction, including outer membrane permeabilisation and altered dynamics (fission/fusion), is a key factor in neuronal death following HI insult.

Purpose of the Study:

• To introduce the molecular mechanisms and pathways governing mitochondrial dynamics.
• To explain how these pathways are regulated and disrupted by HI insult.
• To review drug repurposing strategies targeting mitochondrial dynamics for potential therapeutic interventions.

Main Methods:

• Literature review of molecular players and pathways in mitochondrial dynamics.
• Analysis of how HI insult affects mitochondrial regulation.
• Survey of existing drugs that could be repurposed to target mitochondrial dynamics.

Main Results:

• Mitochondrial dynamics, involving fission and fusion proteins, are critical in HI brain injury.
• HI insults trigger mitochondrial dysfunction, leading to apoptosis.
• Several approved drugs show potential for repurposing to modulate mitochondrial dynamics.

Conclusions:

• Mitochondrial dynamics represent a promising therapeutic target for HI brain injury.
• Drug repurposing offers a fast-track, low-cost approach to developing new treatments.
• Further research into targeting mitochondrial dynamics could significantly improve outcomes for infants with brain injury.