What question did this study set out to answer?

To identify the molecular mechanisms regulating mitochondrial plasticity and the transition from carbohydrate to fatty acid metabolism in the perinatal heart.

December 3, 2015ScienceOpen Access

Parkin-mediated mitophagy directs perinatal cardiac metabolic maturation in mice

View Full Paper

Ask AI

Bookmark

Authors

GGGuohua GongInner Mongolia University for Nationalities MSMoshi SongHeart Failure / Cardiomyopathy GCGyörgy CsordásThomas Jefferson University

Discussion

Member takes

Implication

Experimental study reveals that Parkin-mediated mitophagy drives perinatal cardiac metabolic maturation in mice, indicating organelle replacement is essential for postnatal heart function.

Key Points

To identify the molecular mechanisms regulating mitochondrial plasticity and the transition from carbohydrate to fatty acid metabolism in the perinatal heart.
Generated mouse models featuring cardiac-specific Parkin deletion or expression of an Mfn2 AA mutant deficient in PINK1 phosphorylation sites necessary for Parkin translocation.
Evaluated mitophagy, mitochondrial fusion, transcriptional profiles, myocardial fatty acylcarnitine levels, and palmitoylcarnitine-induced cardiomyocyte respiration at birth and post-weaning.
Blocking Parkin translocation through Mfn2 AA expression or cardiac Parkin deletion from birth suppressed mitophagy without disrupting mitochondrial fusion, halting postnatal metabolic maturation and impairing survival.
Five-week-old Mfn2 AA hearts maintained a fetal transcriptional profile with suppressed fatty acid metabolism genes, reduced myocardial fatty acylcarnitine levels, and depressed respiration.

Cite This Study

Gong et al. (2015) studied this question.

synapsesocial.com/papers/69ffd8a1da5c1eb07f2d8c43 https://doi.org/10.1126/science.aad2459

View Full Paper

Ask AI

Bookmark

Implication

Experimental study reveals that Parkin-mediated mitophagy drives perinatal cardiac metabolic maturation in mice, indicating organelle replacement is essential for postnatal heart function.

Parkin-mediated mitophagy directs perinatal cardiac metabolic maturation in mice

Discussion

Member takes

Implication

Key Points

Cite This Study

Parkin-mediated mitophagy directs perinatal cardiac metabolic maturation in mice

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider