Evidence map›Paper›PMID 20554760›Full record

ArticleMolecular biology of the cell2010

Phosphatidic acid induces ligand-independent epidermal growth factor receptor endocytic traffic through PDE4 activation.

Andrés Norambuena, Claudia Metz, Juan E Jung, Antonia Silva, Carolina Otero, Jorge Cancino, Claudio Retamal, Juan C Valenzuela, Andrea Soza, Alfonso González

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

17 citing papers in PubMed, 32 citations in OpenAlex.

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  12. Effects of membrane trafficking on signaling by receptor tyrosine kinases.Cold Spring Harbor perspectives in biology · 2013
    Review
  13. Article
  14. Article
  15. Article
  16. EGFR/HER-targeted therapeutics in ovarian cancer.Future medicinal chemistry · 2012
    Review
  17. 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 1 institution in 1 country.

Andrés NorambuenaDepartamento de Inmunología Clínica y Reumatología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
Claudia Metz
Juan E Jung
Antonia Silva
Carolina Otero
Jorge Cancino
Claudio Retamal
Juan C Valenzuela
Andrea Soza
Alfonso González
Pontificia Universidad Católica de Chile · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Endocytosis modulates EGFR function by compartmentalizing and attenuating or enhancing its ligand-induced signaling. Here we show that it can also control the cell surface versus intracellular distribution of empty/inactive EGFR. Our previous observation that PKA inhibitors induce EGFR internalization prompted us to test phosphatidic acid (PA) generated by phospholipase D (PLD) as an endogenous down-regulator of PKA activity, which activates rolipram-sensitive type 4 phosphodiesterases (PDE4) that degrade cAMP. We found that inhibition of PA hydrolysis by propranolol, in the absence of ligand, provokes internalization of inactive (neither tyrosine-phosphorylated nor ubiquitinated) EGFR, accompanied by a transient increase in PA levels and PDE4s activity. This EGFR internalization is mimicked by PA micelles and is strongly counteracted by PLD2 silencing, rolipram or forskolin treatment, and PKA overexpression. Accelerated EGFR endocytosis seems to be mediated by clathrin-dependent and -independent pathways, leading to receptor accumulation in juxtanuclear recycling endosomes, also due to a decreased recycling. Internalized EGFR can remain intracellular without degradation for several hours or return rapidly to the cell surface upon discontinuation of the stimulus. This novel regulatory mechanism of EGFR, also novel function of signaling PA, can transmodulate receptor accessibility in response to heterologous stimuli.

Indexed as

EndocytosisAdrenergic beta-AntagonistsAnimalsClathrinColforsinCyclic AMPCyclic AMP-Dependent Protein KinasesCyclic Nucleotide Phosphodiesterases, Type 4EndosomesEnzyme ActivationErbB ReceptorsFlow CytometryHeLa CellsHumansHydrolysisImmunoblottingAdrenergic beta-AntagonistsClathrinColforsinCyclic AMPCyclic AMP-Dependent Protein KinasesCyclic Nucleotide Phosphodiesterases, Type 4ErbB ReceptorsPhosphatidic AcidsPhospholipase Dphospholipase D2PropranololRolipram

Identifiers

PMID20554760
PMCPMC2921116
OpenAlexW2118081022

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.