Evidence map›Paper›PMID 12612086›Full record

ArticleMolecular and cellular biology2003

Cortactin is a component of clathrin-coated pits and participates in receptor-mediated endocytosis.

Hong Cao, James D Orth, Jing Chen, Shaun G Weller, John E Heuser, Mark A McNiven

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
8.2field-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

84 citing papers in PubMed, 197 citations in OpenAlex.

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24 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 2 institutions in 1 country.

Hong CaoDepartment of Biochemistry and Molecular Biology, Mayo Clinic, 1721 Guggenheim Building, Rochester, MN 55905, USA.
James D Orth
Jing Chen
Shaun G Weller
John E Heuser
Mark A McNiven
Mayo Clinic · USWashington University in St. Louis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The actin cytoskeleton is believed to contribute to the formation of clathrin-coated pits, although the specific components that connect actin filaments with the endocytic machinery are unclear. Cortactin is an F-actin-associated protein, localizes within membrane ruffles in cultured cells, and is a direct binding partner of the large GTPase dynamin. This direct interaction with a component of the endocytic machinery suggests that cortactin may participate in one or several endocytic processes. Therefore, the goal of this study was to test whether cortactin associates with clathrin-coated pits and participates in receptor-mediated endocytosis. Morphological experiments with either anti-cortactin antibodies or expressed red fluorescence protein-tagged cortactin revealed a striking colocalization of cortactin and clathrin puncta at the ventral plasma membrane. Consistent with these observations, cells microinjected with these antibodies exhibited a marked decrease in the uptake of labeled transferrin and low-density lipoprotein while internalization of the fluid marker dextran was unchanged. Cells expressing the cortactin Src homology three domain also exhibited markedly reduced endocytosis. These findings suggest that cortactin is an important component of the receptor-mediated endocytic machinery, where, together with actin and dynamin, it regulates the scission of clathrin pits from the plasma membrane. Thus, cortactin provides a direct link between the dynamic actin cytoskeleton and the membrane pinchase dynamin that supports vesicle formation during receptor-mediated endocytosis.

Indexed as

ActinsAmino Acid SequenceAnimalsAntibodies, MonoclonalCell LineCell MembraneClathrinCoated Pits, Cell-MembraneCortactinCytoskeletonDextransDNA, ComplementaryDynaminsEndocytosisEpithelial CellsLipoproteins, LDLActinsAntibodies, MonoclonalClathrinCortactinCttn protein, ratDextransDNA, ComplementaryDynaminsLipoproteins, LDLMicrofilament ProteinsTransferrin

Identifiers

PMID12612086
PMCPMC149460
OpenAlexW2145273873

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.