Evidence map›Paper›PMID 23389633›Full record

ArticleMolecular biology of the cell2013

A Rab11a-Rab8a-Myo5B network promotes stretch-regulated exocytosis in bladder umbrella cells.

Puneet Khandelwal, H Sandeep Prakasam, Dennis R Clayton, Wily G Ruiz, Luciana I Gallo, Daniel van Roekel, Stefan Lukianov, Johan Peränen, James R Goldenring, Gerard Apodaca

Abstract read
In one paragraph

Article in Molecular biology of the cell, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

36 citing papers in PubMed, 56 citations in OpenAlex.

  1. Epidermal lamellar bodies, essential organelles for the skin barrier.Frontiers in cell and developmental biology · 2025
    Review
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  5. ALS-linked C9orf72-SMCR8 complex is a negative regulator of primary ciliogenesis.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Bladder infection with uropathogenicAmerican journal of physiology. Renal physiology · 2022
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. RAB27B requirement for stretch-induced exocytosis in bladder umbrella cells.American journal of physiology. Cell physiology · 2018
    Article
  19. 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

10 authors at 3 institutions in 2 countries.

Puneet KhandelwalDepartment of Medicine, University of Pittsburgh, Pittsburgh, PA, USA.
H Sandeep Prakasam
Dennis R Clayton
Wily G Ruiz
Luciana I Gallo
Daniel van Roekel
Stefan Lukianov
Johan Peränen
James R Goldenring
Gerard Apodaca
University of Pittsburgh · USUniversity of Helsinki · FIVanderbilt University · US

Funding

Single Nephron and MetabolomicsP30DK079307 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLEYMAN, THOMAS R · 2008 to 2022
$13.4M
SMALL GTP BINDING PROTEINS IN GASTROINTESTINAL MUCOSAR01DK048370 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI GOLDENRING, JAMES RICHARD · 1994 to 2025
$10.1M
Endocytic and Exocytic Traffic in Bladder UroepitheliumR37DK054425 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI APODACA, GERARD L · 2004 to 2013
$3.2M
Molecular characteristics of the apical recycling systemR01DK070856 · NIDDK · VANDERBILT UNIVERSITY · PI GOLDENRING, JAMES RICHARD · 2006 to 2014
$3.1M
Adenosine Receptor Function in Bladder UroepitheliumR01DK077777 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI APODACA, GERARD L · 2008 to 2012
$2.1M
NIDDK NIH HHS P30 DK079307NIDDK NIH HHS P30-DK079307NIDDK NIH HHS R01 DK048370NIDDK NIH HHS R01-DK048370NIDDK NIH HHS R01 DK070856NIDDK NIH HHS R01-DK070856NIDDK NIH HHS R01 DK077777NIDDK NIH HHS R01-DK077777NIDDK NIH HHS R37 DK054425NIDDK NIH HHS R37-DK54425
6 · The paper itself

Abstract

Multiple Rabs are associated with secretory granules/vesicles, but how these GTPases are coordinated to promote regulated exocytosis is not well understood. In bladder umbrella cells a subapical pool of discoidal/fusiform-shaped vesicles (DFVs) undergoes Rab11a-dependent regulated exocytosis in response to bladder filling. We show that Rab11a-associated vesicles are enmeshed in an apical cytokeratin meshwork and that Rab11a likely acts upstream of Rab8a to promote exocytosis. Surprisingly, expression of Rabin8, a previously described Rab11a effector and guanine nucleotide exchange factor for Rab8, stimulates stretch-induced exocytosis in a manner that is independent of its catalytic activity. Additional studies demonstrate that the unconventional motor protein myosin5B motor (Myo5B) works in association with the Rab8a-Rab11a module to promote exocytosis, possibly by ensuring transit of DFVs through a subapical, cortical actin cytoskeleton before fusion. Our results indicate that Rab11a, Rab8a, and Myo5B function as part of a network to promote stretch-induced exocytosis, and we predict that similarly organized Rab networks will be common to other regulated secretory pathways.

Indexed as

ExocytosisActin CytoskeletonAnimalsFemaleGreen Fluorescent ProteinsHuman Growth HormoneHumansMicroscopy, ConfocalMicroscopy, ElectronMyosinsrab11 GTP-Binding Proteinsrab GTP-Binding ProteinsRatsRats, Sprague-DawleySignal TransductionStress, MechanicalGreen Fluorescent ProteinsHuman Growth HormoneMyo5b protein, ratMyosinsrab11 GTP-Binding ProteinsRab8a protein, ratrab GTP-Binding Proteins

Identifiers

PMID23389633
PMCPMC3608489
OpenAlexW2038640606

What OpenQuestion 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 OpenQuestion graph.