1374-TCA Cycle Rewiring in Pluripotency Transitions

Paper Talk · Aug 2, 2026 · 21m

This research identifies a sophisticated metabolic rewiring that occurs during the transition from naive to primed pluripotency in mouse embryos and stem cells. Rather than a simple reduction in mitochondrial activity, the studies reveal that pyruvate cycling and reductive glutamine metabolism are essential for maintaining developmental progression and cell-state transitions. Pyruvate acts as a central node where specific enzyme activities create a cyclical carbon flow that enables a timely exit from naive pluripotency. Unexpectedly, glutamine—rather than glucose—emerges as the primary carbon…