Interplay between cardiolipin and plasmalogens in Barth syndrome

Area of Science:

• Biochemistry
• Genetics
• Metabolic Diseases

Background:

• Barth syndrome (BTHS) is a rare inherited metabolic disorder caused by tafazzin gene mutations.
• Tafazzin is crucial for cardiolipin (CL) remodeling in mitochondria.
• BTHS patients exhibit altered CL levels and species, and abnormal plasmalogen levels.

Purpose of the Study:

• To review evidence linking cardiolipin and plasmalogen levels in BTHS.
• To propose molecular mechanisms underlying this lipid interplay.
• To discuss plasmalogen-based therapeutic strategies for BTHS.

Main Methods:

• Literature review of studies on BTHS, cardiolipin, and plasmalogens.
• Analysis of existing data on lipid abnormalities in BTHS models and patients.
• Exploration of potential molecular pathways connecting CL and plasmalogens.

Main Results:

• BTHS is associated with significant abnormalities in both cardiolipin and plasmalogen levels.
• Plasmalogen precursor administration partially restored both plasmalogen and cardiolipin levels in BTHS cells.
• Evidence suggests a functional interdependence between cardiolipin and plasmalogens in BTHS.

Conclusions:

• A molecular link between cardiolipin and plasmalogens is implicated in Barth syndrome.
• Understanding this interplay may reveal novel therapeutic targets.
• Targeting plasmalogen metabolism presents a promising avenue for BTHS treatment.