GoKawiilUniversity of Utah study links MCT1 transporter to heart's lactate-based energy supply
Researchers at the University of Utah analyzed human heart tissue from transplant patients and donor controls, alongside genetically engineered mouse models lacking cardiac MPC1, MCT1 or MCT4, to study how the heart imports and uses lactate for energy. The work shows that the transporter protein MCT1 is required for mitochondria to import lactate, supporting cardiac metabolic function.
GoKawiil's interpretation of the reporting above, not reported fact.
Because failing hearts often shift their fuel preferences away from fatty acids toward lactate and other substrates, understanding MCT1's role could inform future research into metabolic therapies for heart failure. The findings suggest mitochondrial lactate transport is a distinct, targetable pathway, though translating this animal and tissue-sample research into treatments would require further clinical study.
- MCT1 is shown to be necessary for mitochondrial lactate import in heart cells
- Study combined human failing-heart tissue with knockout mouse models of MPC1, MCT1 and MCT4
- Findings point to lactate transport as a specific mechanism sustaining cardiac energy metabolism
Source: nature.com — Cluntun, 2026-10-28
Published there as: “MCT1-dependent mitochondrial lactate import sustains cardiac metabolism”
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