Login / Signup

SLC17A1/3 transporters mediate renal excretion of Lac-Phe in mice and humans.

Veronica L LiShuke XiaoPascal SchlosserNora SchererAmanda L WiggenhornJan SpaasAlan Sheng-Hwa TungEdward D KarolyAnna KottgenJonathan Z Long
Published in: Nature communications (2024)
N-lactoyl-phenylalanine (Lac-Phe) is a lactate-derived metabolite that suppresses food intake and body weight. Little is known about the mechanisms that mediate Lac-Phe transport across cell membranes. Here we identify SLC17A1 and SLC17A3, two kidney-restricted plasma membrane-localized solute carriers, as physiologic urine Lac-Phe transporters. In cell culture, SLC17A1/3 exhibit high Lac-Phe efflux activity. In humans, levels of Lac-Phe in urine exhibit a strong genetic association with the SLC17A1-4 locus. Urine Lac-Phe levels are increased following a Wingate sprint test. In mice, genetic ablation of either SLC17A1 or SLC17A3 reduces urine Lac-Phe levels. Despite these differences, both knockout strains have normal blood Lac-Phe and body weights, demonstrating SLC17A1/3-dependent de-coupling of urine and plasma Lac-Phe pools. Together, these data establish SLC17A1/3 family members as the physiologic urine Lac-Phe transporters and uncover a biochemical pathway for the renal excretion of this signaling metabolite.
Keyphrases
  • body weight
  • type diabetes
  • escherichia coli
  • metabolic syndrome
  • machine learning
  • high intensity
  • dna methylation
  • copy number
  • bone marrow
  • room temperature