Evidence map›Paper›PMID 22021336›Full record

ArticleAmerican journal of respiratory cell and molecular biology2012

The lysophosphatidic acid receptor LPA1 promotes epithelial cell apoptosis after lung injury.

Manuela Funke, Zhenwen Zhao, Yan Xu, Jerold Chun, Andrew M Tager

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory cell and molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 2 pooled it
8.2field-weighted citation impact, top 2% 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

71 citing papers in PubMed, 2 syntheses or guidelines pooled it, 137 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Advances in metabolic reprogramming of pulmonary fibrosis.Chinese medical journal pulmonary and critical care medicine · 2026
    Review
  7. Review
  8. Review
  9. Review
  10. Emerging Concepts in Therapeutic Interventions for Idiopathic Pulmonary Fibrosis.Seminars in respiratory and critical care medicine · 2025
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Lysophosphatidic acid receptor 1 inhibition: a potential treatment target for pulmonary fibrosis.European respiratory review : an official journal of the European Respiratory Society · 2024
    Review
  17. Article
  18. Article
  19. Review
  20. Lipid metabolism in idiopathic pulmonary fibrosis: From pathogenesis to therapy.Journal of molecular medicine (Berlin, Germany) · 2023
    Review

11 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

5 authors at 3 institutions in 1 country.

Manuela FunkePulmonary and Critical Care Unit, Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, 149 13th Street, Room 8301, Charlestown, MA 02129, USA. amtager@partners.org
Zhenwen Zhao
Yan Xu
Jerold Chun
Andrew M Tager
Harvard University · USIndiana University School of MedicineScripps Research Institute · US

Funding

The impact of HIV viral diversity and cellular immunity on HIV pathogenesisP30AI060354 · NIAID · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI ROBERT A. PARKER · 2004 to 2026
$94.4M
Receptor-mediated S1P signaling in the embryonic brainR01DA019674 · NIDA · SCRIPPS RESEARCH INSTITUTE, THE · PI CHUN, JEROLD · 2006 to 2010
$1.9M
Interactions of LPA and prostaglandins in implantationR01HD050685 · NICHD · SCRIPPS RESEARCH INSTITUTE, THE · PI CHUN, JEROLD · 2006 to 2010
$1.9M
Protective Role of the S1P-S1P1 Pathway in Pulmonary FibrosisR01HL108975 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI TAGER, ANDREW M · 2011 to 2015
$1.8M
Novel Lipid Signaling Pathways in Ovarian Cancer CellsR01CA095042 · NCI · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI XU, YAN · 2003 to 2007
$1.7M
The LPA Pathway in Lung Fibrosis: Novel Mediators and New Therapeutic TargetsR01HL095732 · NHLBI · MASSACHUSETTS GENERAL HOSPITAL · PI TAGER, ANDREW M · 2009 to 2010
$922k
NCI NIH HHS R01 CA095042NCI NIH HHS R01-CA095042NHLBI NIH HHS R01 HL095732NHLBI NIH HHS R01-HL095732NHLBI NIH HHS R01 HL108975NHLBI NIH HHS R01-HL108975NIAID NIH HHS P30 AI060354NICHD NIH HHS NIH-HD050685NICHD NIH HHS R01 HD050685NIDA NIH HHS NIH-DA019674NIDA NIH HHS R01 DA019674
6 · The paper itself

Abstract

Increased epithelial cell apoptosis in response to lung injury has been implicated in the development of idiopathic pulmonary fibrosis (IPF), but the molecular pathways promoting epithelial cell apoptosis in this disease have yet to be fully identified. Lysophosphatidic acid (LPA), which we have previously demonstrated to mediate bleomycin lung injury-induced fibroblast recruitment and vascular leak in mice and fibroblast recruitment in patients with IPF, is an important regulator of survival and apoptosis in many cell types. We now show that LPA signaling through its receptor LPA(1) promotes epithelial cell apoptosis induced by bleomycin injury. The number of apoptotic cells present in the alveolar and bronchial epithelia of LPA(1)-deficient mice was significantly reduced compared with wild-type mice at Day 3 after bleomycin challenge, as was lung caspase-3 activity. Consistent with these in vivo results, we found that LPA signaling through LPA(1) induced apoptosis in normal human bronchial epithelial cells in culture. LPA-LPA(1) signaling appeared to specifically mediate anoikis, the apoptosis of anchorage-dependent cells induced by their detachment. Similarly, LPA negatively regulated attachment of R3/1 rat alveolar epithelial cell line cells. In contrast, LPA signaling through LPA(1) promoted the resistance of lung fibroblasts to apoptosis, which has also been implicated in IPF. The ability of LPA-LPA(1) signaling to promote epithelial cell apoptosis and fibroblast resistance to apoptosis may therefore contribute to the capacity of this signaling pathway to regulate the development of pulmonary fibrosis after lung injury.

Indexed as

ApoptosisAnimalsAnoikisBleomycinCaspase 3Cell AdhesionCells, CulturedDisease Models, AnimalEpithelial CellsFibroblastsHumansLungLung InjuryLysophospholipidsMiceMice, 129 StrainBleomycinCasp3 protein, mouseCaspase 3lysophosphatidic acidLysophospholipidsReceptors, Lysophosphatidic Acid

Identifiers

PMID22021336
PMCPMC3326436
OpenAlexW2114232709

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.