Evidence map›Paper›PMID 22427635›Full record

ArticleJournal of immunology (Baltimore, Md. : 1950)2012

Lpa2 is a negative regulator of both dendritic cell activation and murine models of allergic lung inflammation.

Jason Emo, Nida Meednu, Timothy J Chapman, Fariba Rezaee, Marlene Balys, Troy Randall, Tirumalai Rangasamy, Steve N Georas

Open access · bronzeAbstract read
In one paragraph

Article in Journal of immunology (Baltimore, Md. : 1950), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

35 citing papers in PubMed, 56 citations in OpenAlex.

  1. Lysophosphatidic Acid Receptor 5 (LPAInternational journal of molecular sciences · 2026
    Article
  2. Lp-PLA2-derived LysoPC drives dendritic cell immunogenic activation and Th17 inflammation in severe asthma.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2026
    Article
  3. Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Efficacy Comparison of LPAInternational journal of molecular sciences · 2022
    Article
  9. Article
  10. Lysophospholipids in Lung Inflammatory Diseases.Advances in experimental medicine and biology · 2021
    Article
  11. Review
  12. Review
  13. The roles of autotaxin/lysophosphatidic acid in immune regulation and asthma.Biochimica et biophysica acta. Molecular and cell biology of lipids · 2020
    Review
  14. Article
  15. Article
  16. Review
  17. Function of secreted phospholipase ABiochimica et biophysica acta. Molecular and cell biology of lipids · 2019
    Review
  18. Review
  19. Article
  20. Review
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 1 institution in 1 country.

Jason EmoDivision of Pulmonary and Critical Care Medicine, Department of Medicine, University of Rochester Medical Center, Rochester, NY 14610, USA.
Nida Meednu
Timothy J Chapman
Fariba Rezaee
Marlene Balys
Troy Randall
Tirumalai Rangasamy
Steve N Georas
University of Rochester Medical Center · US

Funding

VISUAL INDICES OF NEUROTOXICITYP30ES001247 · NIEHS · UNIVERSITY OF ROCHESTER · PI Martha Susiarjo · 1985 to 2026
$42.8M
MULTIDISCIPLINARY TRAINING IN PULMONARY RESEARCHT32HL066988 · NHLBI · UNIVERSITY OF ROCHESTER · PI GEORAS, STEVE N, O'REILLY, MICHAEL A · 2001 to 2021
$8.1M
LPA and Edg Receptors in the Pulmonary Immune ResposeR01HL071933 · NHLBI · UNIVERSITY OF ROCHESTER · PI GEORAS, STEVE N · 2004 to 2013
$3.1M
Pediatric Research: Bench to Bedside to CurbsideT32HD057821 · NICHD · UNIVERSITY OF ROCHESTER · PI SCHOR, NINA F · 2010 to 2014
$1.1M
NHLBI NIH HHS R01 HL071933NHLBI NIH HHS R01HL071933NHLBI NIH HHS T32 HL066988NICHD NIH HHS T32 HD057821NIEHS NIH HHS P30 ES001247NIEHS NIH HHS P30ES01247
6 · The paper itself

Abstract

Negative regulation of innate immune responses is essential to prevent excess inflammation and tissue injury and promote homeostasis. Lysophosphatidic acid (LPA) is a pleiotropic lipid that regulates cell growth, migration, and activation and is constitutively produced at low levels in tissues and in serum. Extracellular LPA binds to specific G protein-coupled receptors, whose function in regulating innate or adaptive immune responses remains poorly understood. Of the classical LPA receptors belonging to the Edg family, lpa2 (edg4) is expressed by dendritic cells (DC) and other innate immune cells. In this article, we show that DC from lpa2(-/-) mice are hyperactive compared with their wild-type counterparts and are less susceptible to inhibition by different LPA species. In transient-transfection assays, we found that lpa2 overexpression inhibits NF-κB-driven gene transcription. Using an adoptive-transfer approach, we found that allergen-pulsed lpa2(-/-) DC induced substantially more lung inflammation than did wild-type DC after inhaled allergen challenge. Finally, lpa2(-/-) mice develop greater allergen-driven lung inflammation than do their wild-type counterparts in models of allergic asthma involving both systemic and mucosal sensitization. Taken together, these findings identify LPA acting via lpa2 as a novel negative regulatory pathway that inhibits DC activation and allergic airway inflammation.

Indexed as

Administration, InhalationAdoptive TransferAllergensAnimalsAsthmaDendritic CellsDisease Models, AnimalFemaleGene DeletionHEK293 CellsHumansInflammationLungLysophospholipidsMiceMice, Inbred C57BLAllergenslysophosphatidic acidLysophospholipidsNF-kappa BReceptors, Lysophosphatidic Acid

Identifiers

PMID22427635
PMCPMC3324594
OpenAlexW2158061358

What OpenQuestion holds

Textmetadata
LicenceTDM
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.