Evidence map›Paper›PMID 25648148›Full record

ArticleEMBO reports2015

Starvation-induced MTMR13 and RAB21 activity regulates VAMP8 to promote autophagosome-lysosome fusion.

Steve Jean, Sarah Cox, Sonya Nassari, Amy A Kiger

Open access · greenAbstract read
In one paragraph

Article in EMBO reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
4.2field-weighted citation impact, top 5% 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

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 89 citations in OpenAlex.

  1. Guideline
  2. Guideline
  3. Article
  4. SNX-3 confers lysosomal fusion-competence to sustain basal autophagy.Cellular and molecular life sciences : CMLS · 2026
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  6. Review
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  19. Exocytic machineries differentially control mediator release from allergen-triggered RBL-2H3 cells.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Article
  20. Article
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

4 authors at 1 institution in 1 country.

Steve JeanDivision of Biological Sciences, University of California, San Diego, La Jolla, CA, USA.
Sarah CoxDivision of Biological Sciences, University of California, San Diego, La Jolla, CA, USA.
Sonya NassariDivision of Biological Sciences, University of California, San Diego, La Jolla, CA, USA.
Amy A KigerDivision of Biological Sciences, University of California, San Diego, La Jolla, CA, USA akiger@ucsd.edu.
University of California, San Diego · US

Funding

SYNTHETIC SYSTEMSP50GM085764 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI HASTY, JEFF M, IDEKER, TREY · 2010 to 2018
$23.3M
U of Calif, San Diego Neuroscience Microscopy ImagingP30NS047101 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GLEESON, JOSEPH G, ZHENG, BINHAI · 2003 to 2022
$9.0M
Function of Myotubularin Phosphoinositide Phosphatase in MorphogenesisR01GM078176 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KIGER, AMY A · 2007 to 2012
$1.6M
NIGMS NIH HHS P50 GM085764NIGMS NIH HHS R01 GM078176NINDS NIH HHS P30 NS047101
6 · The paper itself

Abstract

Autophagy, the process for recycling cytoplasm in the lysosome, depends on membrane trafficking. We previously identified Drosophila Sbf as a Rab21 guanine nucleotide exchange factor (GEF) that acts with Rab21 in endosomal trafficking. Here, we show that Sbf/MTMR13 and Rab21 have conserved functions required for starvation-induced autophagy. Depletion of Sbf/MTMR13 or Rab21 blocked endolysosomal trafficking of VAMP8, a SNARE required for autophagosome-lysosome fusion. We show that starvation induces Sbf/MTMR13 GEF and RAB21 activity, as well as their induced binding to VAMP8 (or closest Drosophila homolog, Vamp7). MTMR13 is required for RAB21 activation, VAMP8 interaction and VAMP8 endolysosomal trafficking, defining a novel GEF-Rab-effector pathway. These results identify starvation-responsive endosomal regulators and trafficking that tunes membrane demands with changing autophagy status.

Indexed as

AnimalsAutophagyCrosses, GeneticDrosophilaElectrophoresis, Polyacrylamide GelHeLa CellsHumansImmunoblottingImmunoprecipitationLysosomesMicroscopy, Electron, TransmissionMicroscopy, FluorescencePhagosomesProtein Tyrosine Phosphatases, Non-Receptorrab GTP-Binding ProteinsRNA, Small InterferingProtein Tyrosine Phosphatases, Non-ReceptorRAB21 protein, humanrab GTP-Binding ProteinsRNA, Small InterferingR-SNARE ProteinsSBF2 protein, humanVAMP8 protein, humanautophagyMTMR13Rab21SbfVAMP8

Identifiers

PMID25648148
PMCPMC4364869
OpenAlexW2104760708

What OpenQuestion holds

Textmetadata
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 OpenQuestion graph.