Evidence map›Paper›PMID 19564407›Full record

ArticleThe Journal of cell biology2009

The enterocyte microvillus is a vesicle-generating organelle.

Russell E McConnell, James N Higginbotham, David A Shifrin, David L Tabb, Robert J Coffey, Matthew J Tyska

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 151 papers.

0numbers the graph read from it
0cells of the map it votes in
151citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

151 citing papers in PubMed, 253 citations in OpenAlex.

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  14. Biophysical modeling of membrane curvature generation and curvature sensing by the glycocalyx.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  20. Host-derived CEACAM-laden vesicles engage enterotoxigenicProceedings of the National Academy of Sciences of the United States of America · 2024
    Article

91 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

6 authors at 1 institution in 1 country.

Russell E McConnellDepartment of Cell and Developmental Biology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
James N Higginbotham
David A Shifrin
David L Tabb
Robert J Coffey
Matthew J Tyska
Vanderbilt University Medical Center · US

Funding

Understanding and Controlling p120 Dysfunction in CRCP50CA095103 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 2002 to 2017
$33.6M
Translational Analysis CoreP30DK058404 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RICHARD M. PEEK · 2002 to 2026
$29.9M
TRANSFORMING GROWTH FACTORS IN COLONIC NEOPLASIAR01CA046413 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 1988 to 2016
$8.8M
Training Program in Stem Cell and Regenerative Developmental BiologyT32HD007502 · NICHD · VANDERBILT UNIVERSITY · PI WRIGHT, CHRISTOPHER V · 1997 to 2022
$5.4M
Regulation of Brush Border Structure by Myosin-1aR01DK075555 · NIDDK · VANDERBILT UNIVERSITY · PI TYSKA, MATTHEW J · 2007 to 2016
$2.7M
New Proteomic Algorithms to Identify Mutant or Modified ProteinsR01CA126218 · NCI · VANDERBILT UNIVERSITY · PI TABB, DAVID L · 2006 to 2010
$1.8M
Role of EGFR ligand-containing exosomes in colorectal cancerR01CA163563 · NCI · VANDERBILT UNIVERSITY MEDICAL CENTER · PI COFFEY, ROBERT J. · 2013 to 2016
$1.7M
NCI NIH HHS CA-126218NCI NIH HHS CA-46413NCI NIH HHS P50 CA095103NCI NIH HHS R01 CA046413NCI NIH HHS R01 CA126218NCI NIH HHS R01 CA163563NICHD NIH HHS T32 HD007502NIDDK NIH HHS DK-075555NIDDK NIH HHS P30 DK-058404NIDDK NIH HHS P30 DK058404NIDDK NIH HHS R01 DK075555PHS HHS P50 95103PHS HHS U01 084239
6 · The paper itself

Abstract

For decades, enterocyte brush border microvilli have been viewed as passive cytoskeletal scaffolds that serve to increase apical membrane surface area. However, recent studies revealed that in the in vitro context of isolated brush borders, myosin-1a (myo1a) powers the sliding of microvillar membrane along core actin bundles. This activity also leads to the shedding of small vesicles from microvillar tips, suggesting that microvilli may function as vesicle-generating organelles in vivo. In this study, we present data in support of this hypothesis, showing that enterocyte microvilli release unilamellar vesicles into the intestinal lumen; these vesicles retain the right side out orientation of microvillar membrane, contain catalytically active brush border enzymes, and are specifically enriched in intestinal alkaline phosphatase. Moreover, myo1a knockout mice demonstrate striking perturbations in vesicle production, clearly implicating this motor in the in vivo regulation of this novel activity. In combination, these data show that microvilli function as vesicle-generating organelles, which enable enterocytes to deploy catalytic activities into the intestinal lumen.

Indexed as

EnterocytesMicrovilliAlkaline PhosphataseAnimalsCell MembraneCell PolarityIsoenzymesMiceMice, KnockoutMyosin Heavy ChainsOrganellesRatsRats, Sprague-DawleyUnilamellar LiposomesAlkaline PhosphataseIsoenzymesMyo1a protein, mouseMyosin Heavy ChainsUnilamellar Liposomes

Identifiers

PMID19564407
PMCPMC2712962
OpenAlexW2146134298

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.