ArticleMolecular and cellular biology2002
Characterization of lpa(2) (Edg4) and lpa(1)/lpa(2) (Edg2/Edg4) lysophosphatidic acid receptor knockout mice: signaling deficits without obvious phenotypic abnormality attributable to lpa(2).
Article in Molecular and cellular biology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 130 papers.
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.
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.
Who cites it
130 citing papers in PubMed, 313 citations in OpenAlex.
- Pharmacological Blockade of LPAR1 Does Not Provide Neuroprotection in a Rat Model of Ocular Hypertensive Glaucoma.Translational vision science & technology · 2026Article
- Lysophosphatidic acid selectively modulates excitatory transmission in hippocampal neurons.Cell & bioscience · 2025Article
- Unraveling the Role of Autotaxin and Lysophosphatidic Acid in Alzheimer's Disease: From Molecular Mechanisms to Therapeutic Potential.International journal of molecular sciences · 2025Review
- Lysophosphatidic Acid Receptors LPAR5 and LPAR2 Inversely Control Hydroxychloroquine-Evoked Itch and Scratching in Mice.International journal of molecular sciences · 2024Article
- Discovery of a brain penetrant small molecule antagonist targeting LPA1 receptors to reduce neuroinflammation and promote remyelination in multiple sclerosis.Scientific reports · 2024Article
- A dual role of lysophosphatidic acid type 2 receptor (LPAR2) in nonsteroidal anti-inflammatory drug-induced mouse enteropathy.Acta pharmacologica Sinica · 2024Article
- Autotaxin and Lysophosphatidate Signaling: Prime Targets for Mitigating Therapy Resistance in Breast Cancer.World journal of oncology · 2024Review
- Lysophosphatidic acid exerts protective effects on HEI-OC1 cells against cytotoxicity of cisplatin by decreasing apoptosis, excessive autophagy, and accumulation of ROS.Cell death discovery · 2023Article
- Lysophosphatidic Acid Receptor Signaling in the Human Breast Cancer Tumor Microenvironment Elicits Receptor-Dependent Effects on Tumor Progression.International journal of molecular sciences · 2023Article
- The Role of Autotaxin and LPA Signaling in Embryonic Development, Pathophysiology and Cancer.International journal of molecular sciences · 2023Article
- Compensatory Upregulation of LPACells · 2022Article
- Autotaxin Has a Negative Role in Systemic Inflammation.International journal of molecular sciences · 2022Article
- The LPA-CDK5-tau pathway mediates neuronal injury in an in vitro model of ischemia-reperfusion insult.BMC neurology · 2022Article
- Dietary Lactobacillus-Derived Exopolysaccharide Enhances Immune-Checkpoint Blockade Therapy.Cancer discovery · 2022Article
- Loss of lysophosphatidic acid receptor 1 in hepatocytes reduces steatosis via down-regulation of CD36.Prostaglandins & other lipid mediators · 2021Article
- Generation of an Lpar1-EGFP Fusion Knock-in Transgenic Mouse Line.Cell biochemistry and biophysics · 2021Article
- Review
- Gintonin influences the morphology and motility of adult brain neurons via LPA receptors.Journal of ginseng research · 2021Article
- Lysophosphatidic Acid Signalling in Nervous System Development and Function.Neuromolecular medicine · 2021Review
- Prevention of age-associated neuronal hyperexcitability with improved learning and attention upon knockout or antagonism of LPAR2.Cellular and molecular life sciences : CMLS · 2021Article
70 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 1 institution in 2 countries.
Funding
Abstract
Lysophosphatidic acid (LPA), a bioactive lipid produced by several cell types including postmitotic neurons and activated platelets, is thought to be involved in various biological processes, including brain development. Three cognate G protein-coupled receptors encoded by lpa(1)/lp(A1)/Edg-2/Gpcr26, lpa(2)/lp(A2)/Edg-4, and lpa(3)/lp(A3)/Edg-7 mediate the cellular effects of LPA. We have previously shown that deletion of lpa(1) in mice results in craniofacial dysmorphism, semilethality due to defective suckling behavior, and generation of a small fraction of pups with frontal hematoma. To further investigate the role of these receptors and LPA signaling in the organism, we deleted lpa(2) in mice. Homozygous knockout (lpa(2)((-/-))) mice were born at the expected frequency and displayed no obvious phenotypic abnormalities. Intercrosses allowed generation of lpa(1)((-/-)) lpa(2)((-/-)) double knockout mice, which displayed no additional phenotypic abnormalities relative to lpa(1)((-/-)) mice except for an increased incidence of perinatal frontal hematoma. Histological analyses of lpa(1)((-/-)) lpa(2)((-/-)) embryonic cerebral cortices did not reveal obvious differences in the proliferating cell population. However, many LPA-induced responses, including phospholipase C activation, Ca(2+) mobilization, adenylyl cyclase activation, proliferation, JNK activation, Akt activation, and stress fiber formation, were absent or severely reduced in embryonic fibroblasts derived from lpa(1)((-/-)) lpa(2)((-/-)) mice. Except for adenylyl cyclase activation [which was nearly abolished in lpa(1)((-/-)) fibroblasts], these responses were only partially affected in lpa(1)((-/-)) and lpa(2)((-/-)) fibroblasts. Thus, although LPA(2) is not essential for normal mouse development, it does act redundantly with LPA(1) to mediate most LPA responses in fibroblasts.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.