Evidence map›Paper›PMID 18824544›Full record

ArticleThe Journal of biological chemistry2008

NADPH oxidase-dependent generation of lysophosphatidylserine enhances clearance of activated and dying neutrophils via G2A.

S Courtney Frasch, Karin Zemski Berry, Ruby Fernandez-Boyanapalli, Hyun-Sun Jin, Christina Leslie, Peter M Henson, Robert C Murphy, Donna L Bratton

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

68 citing papers in PubMed, 116 citations in OpenAlex.

  1. Article
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  7. Efferocytosis and Respiratory Disease.International journal of molecular sciences · 2023
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  10. Mafba and Mafbb regulate microglial colonization of zebrafish brain via controlling chemotaxis receptor expression.Proceedings of the National Academy of Sciences of the United States of America · 2022
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  15. Lipidomic changes in the liver of beagle dogs associated withFrontiers in cellular and infection microbiology · 2022
    Article
  16. Article
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  19. Observational
  20. Article

8 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

8 authors at 2 institutions in 1 country.

S Courtney FraschDepartment of Pediatrics, National Jewish Health, Denver, Colorado 80206, USA. fraschc@njc.org
Karin Zemski Berry
Ruby Fernandez-Boyanapalli
Hyun-Sun Jin
Christina Leslie
Peter M Henson
Robert C Murphy
Donna L Bratton
National Jewish Health · USUniversity of Colorado Denver · US

Funding

TRANSLOCATION AND TRANSCELLULAR BIOSYNTHESISP01HL034303 · NHLBI · NATIONAL JEWISH HEALTH · PI BARKLEY, ROBERT · 1985 to 2015
$25.0M
Regulation of Pulmonary InflammationR01HL081151 · NHLBI · NATIONAL JEWISH HEALTH · PI HENSON, PETER M · 2005 to 2012
$3.5M
Uptake of apoptotic cellsR01GM061031 · NIGMS · NATIONAL JEWISH HEALTH · PI HENSON, PETER M · 2001 to 2009
$3.0M
Defective PS Exposure in Neutrophil Apoptosis in CGDR01AI058228 · NIAID · NATIONAL JEWISH HEALTH · PI BRATTON, DONNA L · 2004 to 2007
$1.0M
Macrophage PPARg signaling, efferocytosis, and exaggerated inflammation in CGDR56AI058228 · NIAID · NATIONAL JEWISH HEALTH · PI BRATTON, DONNA L · 2011 to 2011
$317k
NHLBI NIH HHS HL34303NHLBI NIH HHS HL81151NIAID NIH HHS AI058228NIGMS NIH HHS GM61031
6 · The paper itself

Abstract

Exofacial phosphatidylserine (PS) is an important ligand mediating apoptotic cell clearance by phagocytes. Oxidation of PS fatty acyl groups (oxPS) during apoptosis reportedly mediates recognition through scavenger receptors. Given the oxidative capacity of the neutrophil NADPH oxidase, we sought to identify oxPS signaling species in stimulated neutrophils. Using mass spectrometry analysis, only trace amounts of previously characterized oxPS species were found. Conversely, 18:1 and 18:0 lysophosphatidylserine (lyso-PS), known bioactive signaling phospholipids, were identified as abundant modified PS species following activation of the neutrophil oxidase. NADPH oxidase inhibitors blocked the production of lyso-PS in vitro, and accordingly, its generation in vivo by activated, murine neutrophils during zymosan-induced peritonitis was absent in mice lacking a functional NADPH oxidase (gp91phox-/-). Treatment of macrophages with lyso-PS enhanced the uptake of apoptotic cells in vitro, an effect that was dependent on signaling via the macrophage G2A receptor. Similarly, endogenously produced lyso-PS also enhanced the G2A-mediated uptake of activated PS-exposing (but non-apoptotic) neutrophils, raising the possibility of non-apoptotic mechanisms for removal of inflammatory cells during resolution. Finally, antibody blockade of G2A signaling in vivo prolonged zymosan-induced neutrophilia in wild-type mice, whereas having no effect in gp91phox-/- mice where lyso-PS are not generated. Taken together, we show that lyso-PS are modified PS species generated following activation of the NADPH oxidase and lyso-PS signaling through the macrophage G2A functions to enhance existing receptor/ligand systems for optimal resolution of neutrophilic inflammation.

Indexed as

Signal TransductionAnimalsAntibodiesCell Cycle ProteinsCell DeathEnzyme ActivationInflammationLysophospholipidsMacrophages, PeritonealMembrane GlycoproteinsMiceMice, KnockoutNADPH Oxidase 2NADPH OxidasesNeutrophil ActivationNeutrophilsAntibodiesCell Cycle ProteinsCybb protein, mouseG2A receptorlysophosphatidylserineLysophospholipidsMembrane GlycoproteinsNADPH Oxidase 2NADPH OxidasesPhosphatidylserinesReceptors, G-Protein-CoupledZymosan

Identifiers

PMID18824544
PMCPMC2586279
OpenAlexW2048719683

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.