Covering the Role of PGC-1α in the Nervous System.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic, cell-culture, and animal model studies.
PubMed 35011673 · doi:10.3390/cells11010111
What was done
Narrative review of recent literature examining the roles of the transcriptional coactivator PGC-1α (peroxisome proliferator-activated receptor-γ coactivator-1α) and its CNS-specific isoforms across different neuronal and glial cell types.
What was found
The abstract reports no numerical data. It summarizes preclinical findings indicating that PGC-1α deficiency in mice impairs interneuron and dopaminergic neuron viability, inhibitory signaling, and behavior. Across rodent models, PGC-1α protects upper motoneurons in ALS models, aids lower motoneuron neuromuscular junction formation, reduces sensory neuron oxidative stress, and protects photoreceptors. In glial lineages, it is implicated in astrocyte maturation and proliferation, oligodendrocyte myelination, and microglial autophagy/mitophagy, alongside developmental and postnatal synaptogenesis.
Why it matters
Understanding the diverse, cell-type-specific functions of PGC-1α in the brain clarifies its mechanistic role in neurodegenerative pathophysiology and identifies pathways for potential therapeutic targeting.
Limits
The review relies on rodent and in vitro models without human clinical data. As a narrative review, it lacks systematic search methodology, risk-of-bias assessment, and quantitative effect sizes.
Cited by
- contradicts PGC-1alpha promotes mitochondrial biogenesis and enhances cellular energy metabolism across the body, including in microglial cells.