Evidence map›Paper›PMID 19966785›Full record

ArticleNature cell biology2010

Rab27a and Rab27b control different steps of the exosome secretion pathway.

Matias Ostrowski, Nuno B Carmo, Sophie Krumeich, Isabelle Fanget, Graça Raposo, Ariel Savina, Catarina F Moita, Kristine Schauer, Alistair N Hume, Rui P Freitas and 10 more

Abstract read
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In one paragraph

Article in Nature cell biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1,613 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1,613citing papers in PubMed, 3 pooled it
18.7field-weighted citation impact, top 1% 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

1,613 citing papers in PubMed, 3 syntheses or guidelines pooled it, 2,656 citations in OpenAlex.

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  12. Exosome trafficking is a key regulator of adipocyte thermogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  16. Thbs1Journal of advanced research · 2026
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1,553 more citing papers are in PubMed but not listed here.

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

20 authors at 7 institutions in 5 countries.

Matias OstrowskiINSERM U932, 26 rue d'Ulm, 75005 Paris, France.
Nuno B Carmo
Sophie Krumeich
Isabelle Fanget
Graça Raposo
Ariel Savina
Catarina F Moita
Kristine Schauer
Alistair N Hume
Rui P Freitas
Bruno Goud
Philippe Benaroch
Nir Hacohen
Mitsunori Fukuda
Claire Desnos
Miguel C Seabra
François Darchen
Sebastian Amigorena
Luis F Moita
Clotilde Thery
Inserm · FRHospital de Egas Moniz · PTCentre National de la Recherche Scientifique · FRInstitut de Biologie Physico-Chimique · FRImperial College London · GBBroad Institute · USTohoku University · JP

Funding

Wellcome Trust 075498
6 · The paper itself

Abstract

Exosomes are secreted membrane vesicles that share structural and biochemical characteristics with intraluminal vesicles of multivesicular endosomes (MVEs). Exosomes could be involved in intercellular communication and in the pathogenesis of infectious and degenerative diseases. The molecular mechanisms of exosome biogenesis and secretion are, however, poorly understood. Using an RNA interference (RNAi) screen, we identified five Rab GTPases that promote exosome secretion in HeLa cells. Among these, Rab27a and Rab27b were found to function in MVE docking at the plasma membrane. The size of MVEs was strongly increased by Rab27a silencing, whereas MVEs were redistributed towards the perinuclear region upon Rab27b silencing. Thus, the two Rab27 isoforms have different roles in the exosomal pathway. In addition, silencing two known Rab27 effectors, Slp4 (also known as SYTL4, synaptotagmin-like 4) and Slac2b (also known as EXPH5, exophilin 5), inhibited exosome secretion and phenocopied silencing of Rab27a and Rab27b, respectively. Our results therefore strengthen the link between MVEs and exosomes, and introduce ways of manipulating exosome secretion in vivo.

Indexed as

Cell CommunicationCell MembraneEndosomesExosomesFlow CytometryFluorescent Antibody TechniqueGene SilencingHeLa CellsHumansImmunoblottingrab27 GTP-Binding Proteinsrab GTP-Binding ProteinsReverse Transcriptase Polymerase Chain ReactionRNA, MessengerRNA, Small InterferingSubcellular FractionsRAB27A protein, humanRab27B protein, humanrab27 GTP-Binding Proteinsrab GTP-Binding ProteinsRNA, MessengerRNA, Small InterferingSYTL4 protein, humanVesicular Transport Proteins

Identifiers

PMID19966785
OpenAlexW1979751563

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.