Evidence map›Paper›PMID 22724897›Full record

ArticleACS chemical biology2012

The natural product cucurbitacin E inhibits depolymerization of actin filaments.

Pia M Sörensen, Roxana E Iacob, Marco Fritzsche, John R Engen, William M Brieher, Guillaume Charras, Ulrike S Eggert

Open access · greenAbstract read
In one paragraph

Article in ACS chemical biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
4.3field-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

35 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
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  4. Presynapses contain distinct actin nanostructures.The Journal of cell biology · 2023
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  9. Review
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  11. Journal of traditional and complementary medicine · 2020
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  12. Review
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  18. Review
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  20. Review
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

7 authors at 3 institutions in 1 country.

Pia M SörensenDana-Farber Cancer Institute and Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA.
Roxana E Iacob
Marco Fritzsche
John R Engen
William M Brieher
Guillaume Charras
Ulrike S Eggert
Dana-Farber Cancer Institute · USNortheastern University · USUniversity of Illinois Urbana-Champaign · US

Funding

Small molecule probes of cytokinesisR01GM082834 · NIGMS · DANA-FARBER CANCER INST · PI EGGERT, ULRIKE S · 2008 to 2012
$2.6M
Protein conformational change upon membrane associationR01GM086507 · NIGMS · NORTHEASTERN UNIVERSITY · PI ENGEN, JOHN R · 2009 to 2012
$1.6M
NIGMS NIH HHS R01 GM082834NIGMS NIH HHS R01 GM086507
6 · The paper itself

Abstract

Although small molecule actin modulators have been widely used as research tools, only one cell-permeable small molecule inhibitor of actin depolymerization (jasplakinolide) is commercially available. We report that the natural product cucurbitacin E inhibits actin depolymerization and show that its mechanism of action is different from jasplakinolide. In assays using pure fluorescently labeled actin, cucurbitacin E specifically affects depolymerization without affecting polymerization. It inhibits actin depolymerization at substoichiometric concentrations up to 1:6 cucurbitacin E:actin. Cucurbitacin E specifically binds to filamentous actin (F-actin) forming a covalent bond at residue Cys257, but not to monomeric actin (G-actin). On the basis of its compatibility with phalloidin staining, we show that cucurbitacin E occupies a different binding site on actin filaments. Using loss of fluorescence after localized photoactivation, we found that cucurbitacin E inhibits actin depolymerization in live cells. Cucurbitacin E is a widely available plant-derived natural product, making it a useful tool to study actin dynamics in cells and actin-based processes such as cytokinesis.

Indexed as

Actin CytoskeletonActinsAnimalsBiological ProductsCucurbitaceaeDepsipeptidesHeLa CellsHumansPolymerizationRabbitsTriterpenesActinsBiological Productscucurbitacin EDepsipeptidesjasplakinolideTriterpenes

Identifiers

PMID22724897
PMCPMC3448819
OpenAlexW2005677786

What OpenQuestion holds

Textmetadata
LicenceTDM
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.