Evidence map›Paper›PMID 35020443›Full record

ArticleMolecular biology of the cell2022

PP2A-dependent TFEB activation is blocked by PIKfyve-induced mTORC1 activity.

Junya Hasegawa, Emi Tokuda, Yao Yao, Takehiko Sasaki, Ken Inoki, Lois S Weisman

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
4.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 36 citations in OpenAlex.

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  12. mTORC1 signaling and diabetic kidney disease.Diabetology international · 2024
    Review
  13. A PIKfyve modulator combined with an integrated stress response inhibitor to treat lysosomal storage diseases.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Junya HasegawaLife Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109.
Emi TokudaDepartment of Biochemical Pathophysiology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8510, Japan.
Yao YaoLife Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109.
Takehiko SasakiDepartment of Biochemical Pathophysiology, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8510, Japan.
Ken InokiLife Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109.
Lois S WeismanLife Sciences Institute, University of Michigan, 210 Washtenaw Avenue, Ann Arbor, MI 48109.
Tokyo Medical and Dental University · JPUniversity of Michigan–Ann Arbor · USWashtenaw Community College · US

Funding

Phosphoinositide signaling: novel potential targets for Huntington diseaseR01NS099340 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WEISMAN, LOIS S · 2017 to 2021
$2.7M
NINDS NIH HHS R01 NS099340
6 · The paper itself

Abstract

Transcriptional factor EB (TFEB) is a master regulator of genes required for autophagy and lysosomal function. The nuclear localization of TFEB is blocked by the mechanistic target of rapamycin complex 1 (mTORC1)-dependent phosphorylation of TFEB at multiple sites including Ser-211. Here we show that inhibition of PIKfyve, which produces phosphatidylinositol 3,5-bisphosphate on endosomes and lysosomes, causes a loss of Ser-211 phosphorylation and concomitant nuclear localization of TFEB. We found that while mTORC1 activity toward S6K1, as well as other major mTORC1 substrates, is not impaired, PIKfyve inhibition specifically impedes the interaction of TFEB with mTORC1. This suggests that mTORC1 activity on TFEB is selectively inhibited due to loss of mTORC1 access to TFEB. In addition, we found that TFEB activation during inhibition of PIKfyve relies on the ability of protein phosphatase 2A (PP2A) but not calcineurin/PPP3 to dephosphorylate TFEB Ser-211. Thus when PIKfyve is inhibited, PP2A is dominant over mTORC1 for control of TFEB phosphorylation at Ser-S211. Together these findings suggest that mTORC1 and PP2A have opposing roles on TFEB via phosphorylation and dephosphorylation of Ser-211, respectively, and further that PIKfyve inhibits TFEB activity by facilitating mTORC1-dependent phosphorylation of TFEB.

Indexed as

Basic Helix-Loop-Helix Leucine Zipper Transcription FactorsProtein Phosphatase 2AutophagyLysosomesMechanistic Target of Rapamycin Complex 1PhosphorylationBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsMechanistic Target of Rapamycin Complex 1Protein Phosphatase 2

Identifiers

PMID35020443
PMCPMC9250387
OpenAlexW4205230110

What Socratic holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.