Evidence map›Paper›PMID 17192410›Full record

ArticleMolecular biology of the cell2007

Asymmetric localization of calpain 2 during neutrophil chemotaxis.

Paul A Nuzzi, Melissa A Senetar, Anna Huttenlocher

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.0field-weighted citation impact, top 14% 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

30 citing papers in PubMed, 57 citations in OpenAlex.

  1. A Putative Role for TRPC6 in Immune-Mediated Kidney Injury.International journal of molecular sciences · 2023
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  11. Calpain-dependent cytoskeletal rearrangement exploited for anthrax toxin endocytosis.Proceedings of the National Academy of Sciences of the United States of America · 2013
    Article
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  20. Epac increases melanoma cell migration by a heparan sulfate-related mechanism.American journal of physiology. Cell physiology · 2009
    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

3 authors at 1 institution in 1 country.

Paul A NuzziDepartment of Pharmacology, University of Wisconsin, Madison, WI 53706, USA.
Melissa A Senetar
Anna Huttenlocher
University of Wisconsin–Madison · US

Funding

Neutrophil Chemotaxis in AutoinflammationR01GM074827 · NIGMS · UNIVERSITY OF WISCONSIN-MADISON · PI HUTTENLOCHER, ANNA · 2005 to 2015
$3.3M
NIGMS NIH HHS R01 GM-074827NIGMS NIH HHS R01 GM074827
6 · The paper itself

Abstract

Chemoattractants induce neutrophil polarization through localized polymerization of F-actin at the leading edge. The suppression of rear and lateral protrusions is required for efficient chemotaxis and involves the temporal and spatial segregation of signaling molecules. We have previously shown that the intracellular calcium-dependent protease calpain is required for cell migration and is involved in regulating neutrophil chemotaxis. Here, we show that primary neutrophils and neutrophil-like HL-60 cells express both calpain 1 and calpain 2 and that chemoattractants induce the asymmetric recruitment of calpain 2, but not calpain 1, to the leading edge of polarized neutrophils and differentiated HL-60 cells. Using time-lapse microscopy, we show that enrichment of calpain 2 at the leading edge occurs during early pseudopod formation and that its localization is sensitive to changes in the chemotactic gradient. We demonstrate that calpain 2 is recruited to lipid rafts and that cholesterol depletion perturbs calpain 2 localization, suggesting that its enrichment at the front requires proper membrane organization. Finally, we show that catalytic activity of calpain is required to limit pseudopod formation in the direction of chemoattractant and for efficient chemotaxis. Together, our findings identify calpain 2 as a novel component of the frontness signal that promotes polarization during chemotaxis.

Indexed as

Chemotaxis, LeukocyteCalpainCatalysisCell PolarityChemotactic FactorsComplement C5aGene Expression Regulation, EnzymologicG(M3) GangliosideHL-60 CellsHumansMembrane MicrodomainsModels, BiologicalNeutrophilsProtein Processing, Post-TranslationalProtein TransportPseudopodiaCalpainCAPN1 protein, humanCAPN2 protein, humanChemotactic FactorsComplement C5aG(M3) GangliosideRNA, MessengerTalin

Identifiers

PMID17192410
PMCPMC1805107
OpenAlexW2106621127

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.