TFEB controls retromer expression in response to nutrient availability

J Cell Biol. 2019 Dec 2;218(12):3954-3966. doi: 10.1083/jcb.201903006. Epub 2019 Nov 6.

Abstract

Endosomal recycling maintains the cell surface abundance of nutrient transporters for nutrient uptake, but how the cell integrates nutrient availability with recycling is less well understood. Here, in studying the recycling of human glutamine transporters ASCT2 (SLC1A5), LAT1 (SLC7A5), SNAT1 (SLC38A1), and SNAT2 (SLC38A2), we establish that following amino acid restriction, the adaptive delivery of SNAT2 to the cell surface relies on retromer, a master conductor of endosomal recycling. Upon complete amino acid starvation or selective glutamine depletion, we establish that retromer expression is upregulated by transcription factor EB (TFEB) and other members of the MiTF/TFE family of transcription factors through association with CLEAR elements in the promoters of the retromer genes VPS35 and VPS26A TFEB regulation of retromer expression therefore supports adaptive nutrient acquisition through endosomal recycling.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Transport System A / metabolism*
  • Amino Acid Transport System ASC / metabolism
  • Animals
  • Basic Helix-Loop-Helix Leucine Zipper Transcription Factors / metabolism*
  • Cell Membrane / metabolism
  • Endosomes / metabolism*
  • Glutamine / metabolism
  • HEK293 Cells
  • HeLa Cells
  • Humans
  • Large Neutral Amino Acid-Transporter 1 / metabolism
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Minor Histocompatibility Antigens / metabolism
  • Nutrients*
  • Promoter Regions, Genetic
  • Signal Transduction
  • Up-Regulation
  • Vesicular Transport Proteins / metabolism

Substances

  • Amino Acid Transport System A
  • Amino Acid Transport System ASC
  • Basic Helix-Loop-Helix Leucine Zipper Transcription Factors
  • Large Neutral Amino Acid-Transporter 1
  • Minor Histocompatibility Antigens
  • SLC1A5 protein, human
  • SLC38A1 protein, human
  • SLC38A2 protein, human
  • SLC7A5 protein, human
  • Slc1a5 protein, mouse
  • Slc38a1 protein, mouse
  • Slc38a2 protein, mouse
  • Slc7a5 protein, mouse
  • TFE3 protein, human
  • TFEB protein, human
  • VPS26A protein, human
  • VPS35 protein, human
  • Vesicular Transport Proteins
  • Vps26 protein, mouse
  • Vps35 protein, mouse
  • Glutamine
  • Tcfe3 protein, mouse