PGC-1-Related Coactivator Modulates Mitochondrial-Nuclear Crosstalk through Endogenous Nitric Oxide in a Cellular Model of Oncocytic Thyroid Tumours

Mitochondrial biogenesis and healthy aging.

Aging is associated with an overall loss of function at the level of the whole organism that has origins in cellular deterioration. Most cellular components, including mitochondria, require continuous recycling and regeneration throughout the lifespan. Mitochondria are particularly susceptive to damage over time as they are the major bioenergetic machinery and source of oxidative stress in cell...

NO regulates PGC - 1 α expression 1 Nitric oxide regulates both positively and negatively the mitochondrial oxidative stress protective system through the transcriptional coactivator PGC - 1 α

A Cold-Inducible Coactivator of Nuclear Receptors Linked to Adaptive Thermogenesis

Adaptive thermogenesis is an important component of energy homeostasis and a metabolic defense against obesity. We have cloned a novel transcriptional coactivator of nuclear receptors, termed PGC-1, from a brown fat cDNA library. PGC-1 mRNA expression is dramatically elevated upon cold exposure of mice in both brown fat and skeletal muscle, key thermogenic tissues. PGC-1 greatly increases the t...

Mitochondrial Abnormality Facilitates Cyst Formation in Autosomal Dominant Polycystic Kidney Disease

Autosomal dominant polycystic kidney disease (ADPKD) constitutes the most common inherited kidney disease. Mutations in the PKD1 and PKD2 genes, encoding respective polycystin-1 and polycystin-2 Ca2+ ion channels, results in tubular epithelial cell-derived renal cysts. Recent clinical studies demonstrate oxidative stress as present early in ADPKD. Mitochondria comprise the primary reactive oxyg...

Pgc-1-related coactivator, a novel, serum-inducible coactivator of nuclear respiratory factor 1-dependent transcription in mammalian cells.

The thermogenic peroxisome proliferator-activated receptor gamma (PPAR-gamma) coactivator 1 (PGC-1) has previously been shown to activate mitochondrial biogenesis in part through a direct interaction with nuclear respiratory factor 1 (NRF-1). In order to identify related coactivators that act through NRF-1, we searched the databases for sequences with similarities to PGC-1. Here, we describe th...