Evidence map›Paper›PMID 33468622›Full record

ArticleJournal of cell science2021

The phosphatidylinositol 3-phosphate-binding protein SNX4 controls ATG9A recycling and autophagy.

Anthony Ravussin, Andreas Brech, Sharon A Tooze, Harald Stenmark

Open access · hybridAbstract read
In one paragraph

Article in Journal of cell science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
5.0field-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

23 citing papers in PubMed, 39 citations in OpenAlex.

  1. Article
  2. SNX-3 confers lysosomal fusion-competence to sustain basal autophagy.Cellular and molecular life sciences : CMLS · 2026
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  19. Organization of Presynaptic Autophagy-Related Processes.Frontiers in synaptic neuroscience · 2022
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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

4 authors at 2 institutions in 2 countries.

Anthony RavussinCentre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello, 0379 Oslo, Norway.
Andreas BrechCentre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello, 0379 Oslo, Norway.ORCID 0000-0002-9803-1774
Sharon A ToozeMolecular Cell Biology of Autophagy Laboratory, The Francis Crick Institute, London NW1 1AT, UK.
Harald StenmarkCentre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Montebello, 0379 Oslo, Norway stenmark@ulrik.uio.no.ORCID 0000-0002-1971-4252
Oslo University Hospital · NOThe Francis Crick Institute · GB

Funding

Medical Research Council FC001187Wellcome Trust FC001187
6 · The paper itself

Abstract

Late endosomes and lysosomes (endolysosomes) receive proteins and cargo from the secretory, endocytic and autophagic pathways. Although these pathways and the degradative processes of endolysosomes are well characterized, less is understood about protein traffic from these organelles. In this study, we demonstrate the direct involvement of the phosphatidylinositol 3-phosphate (PI3P)-binding SNX4 protein in membrane protein recycling from endolysosomes, and show that SNX4 is required for proper autophagic flux. We show that SNX4 mediates recycling of the lipid scramblase ATG9A, which drives expansion of nascent autophagosome membranes, from endolysosomes to early endosomes, from where ATG9A is recycled to the trans-Golgi network in a retromer-dependent manner. Upon siRNA-mediated depletion of SNX4 or the retromer component VPS35, we observed accumulation of ATG9A on endolysosomes and early endosomes, respectively. Moreover, starvation-induced autophagosome biogenesis and autophagic flux were inhibited when SNX4 was downregulated. We propose that proper ATG9A recycling by SNX4 sustains autophagy by preventing exhaustion of the available ATG9A pool.This article has an associated First Person interview with the first author of the paper.

Indexed as

AutophagyAutophagy-Related ProteinsMembrane ProteinsPhosphatidylinositol PhosphatesSorting NexinsVesicular Transport ProteinsCarrier ProteinsEndosomesHumansProtein TransportATG9A protein, humanAutophagy-Related ProteinsCarrier ProteinsMembrane Proteinsphosphatidylinositol 3-phosphatePhosphatidylinositol PhosphatesSNX4 protein, humanSorting NexinsVesicular Transport ProteinsAutophagyEndosomePhosphoinositideRecycling

Identifiers

PMID33468622
PMCPMC7888711
OpenAlexW3123779190

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.