Evidence map›Paper›PMID 23389627›Full record

ArticleMolecular biology of the cell2013

Central role of the exchange factor GEF-H1 in TNF-α-induced sequential activation of Rac, ADAM17/TACE, and RhoA in tubular epithelial cells.

Faiza Waheed, Qinghong Dan, Yasaman Amoozadeh, Yuqian Zhang, Susumu Tanimura, Pam Speight, András Kapus, Katalin Szászi

Open access · greenAbstract 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 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

26 citing papers in PubMed, 54 citations in OpenAlex.

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  5. Linear motif specificity in signaling through p38α and ERK2 mitogen-activated protein kinases.Proceedings of the National Academy of Sciences of the United States of America · 2023
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  14. iRhom2 promotes lupus nephritis through TNF-α and EGFR signaling.The Journal of clinical investigation · 2018
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  17. Dual regulation of tumor necrosis factor-α on myosin light chain phosphorylation in vascular smooth muscle.American journal of physiology. Heart and circulatory physiology · 2015
    Article
  18. Article
  19. Article
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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

8 authors at 3 institutions in 2 countries.

Faiza WaheedDepartment of Surgery, University of Toronto, Toronto, ON M5B 1T8, Canada.
Qinghong Dan
Yasaman Amoozadeh
Yuqian Zhang
Susumu Tanimura
Pam Speight
András Kapus
Katalin Szászi
University of Toronto · CASt. Michael's Hospital · CANagasaki University · JP

Funding

Canadian Institutes of Health Research MOP-106625Canadian Institutes of Health Research MOP-97774
6 · The paper itself

Abstract

Transactivation of the epidermal growth factor receptor (EGFR) by tumor necrosis factor-α (TNF-α) is a key step in mediating RhoA activation and cytoskeleton and junction remodeling in the tubular epithelium. In this study we explore the mechanisms underlying TNF-α-induced EGFR activation. We show that TNF-α stimulates the TNF-α convertase enzyme (TACE/a disintegrin and metalloproteinase-17), leading to activation of the EGFR/ERK pathway. TACE activation requires the mitogen-activated protein kinase p38, which is activated through the small GTPase Rac. TNF-α stimulates both Rac and RhoA through the guanine nucleotide exchange factor (GEF)-H1 but by different mechanisms. EGFR- and ERK-dependent phosphorylation at the T678 site of GEF-H1 is a prerequisite for RhoA activation only, whereas both Rac and RhoA activation require GEF-H1 phosphorylation on S885. Of interest, GEF-H1-mediated Rac activation is upstream from the TACE/EGFR/ERK pathway and regulates T678 phosphorylation. We also show that TNF-α enhances epithelial wound healing through TACE, ERK, and GEF-H1. Taken together, our findings can explain the mechanisms leading to hierarchical activation of Rac and RhoA by TNF-α through a single GEF. This mechanism could coordinate GEF functions and fine-tune Rac and RhoA activation in epithelial cells, thereby promoting complex functions such as sheet migration.

Indexed as

ADAM17 ProteinADAM ProteinsAnimalsBlotting, WesternDose-Response Relationship, DrugEnzyme ActivationEpithelial CellsErbB ReceptorsExtracellular Signal-Regulated MAP KinasesGuanine Nucleotide Exchange FactorsKidney Tubules, ProximalLLC-PK1 CellsMatrix MetalloproteinasesMicroscopy, FluorescenceMutationPhosphorylationADAM17 ProteinADAM ProteinsErbB ReceptorsExtracellular Signal-Regulated MAP KinasesGuanine Nucleotide Exchange FactorsMatrix Metalloproteinasesrac GTP-Binding ProteinsrhoA GTP-Binding ProteinTumor Necrosis Factor-alpha

Identifiers

PMID23389627
PMCPMC3608494
OpenAlexW2132021216

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.