Evidence map›Paper›PMID 22989886›Full record

ArticleThe Journal of biological chemistry2012

Gemfibrozil and fenofibrate, Food and Drug Administration-approved lipid-lowering drugs, up-regulate tripeptidyl-peptidase 1 in brain cells via peroxisome proliferator-activated receptor α: implications for late infantile Batten disease therapy.

Arunava Ghosh, Grant T Corbett, Frank J Gonzalez, Kalipada Pahan

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. 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
1.6field-weighted citation impact, top 17% 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, 42 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Activation of PPARα Exhibits Therapeutic Efficacy in a Mouse Model of Juvenile Neuronal Ceroid Lipofuscinosis.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  5. Article
  6. Article
  7. Gemfibrozil Protects Dopaminergic Neurons in a Mouse Model of Parkinson's Disease via PPARα-Dependent Astrocytic GDNF Pathway.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
    Article
  8. Article
  9. Cellular models of Batten disease.Biochimica et biophysica acta. Molecular basis of disease · 2020
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Aspirin Induces Lysosomal Biogenesis and Attenuates Amyloid Plaque Pathology in a Mouse Model of Alzheimer's Disease via PPARα.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. 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

4 authors at 2 institutions in 1 country.

Arunava GhoshDepartment of Neurological Sciences, Rush University Medical Center, Chicago, Illinois 60612, USA.
Grant T Corbett
Frank J Gonzalez
Kalipada Pahan
Rush University Medical Center · USNational Institutes of Health · US

Funding

Cinnamon, CNTF and EAER01AT006681 · NCCIH · RUSH UNIVERSITY MEDICAL CENTER · PI PAHAN, KALIPADA · 2011 to 2015
$1.8M
NEMO-binding domain peptide in a monkey model of PDR21NS064564 · NINDS · RUSH UNIVERSITY MEDICAL CENTER · PI PAHAN, KALIPADA · 2010 to 2011
$410k
Castration of male mice: An unexpected way to model PD pathologiesR21NS071479 · NINDS · RUSH UNIVERSITY MEDICAL CENTER · PI PAHAN, KALIPADA · 2010 to 2011
$409k
NCCIH NIH HHS AT6681NCCIH NIH HHS R01 AT006681NINDS NIH HHS NS64564NINDS NIH HHS NS71479NINDS NIH HHS R21 NS064564NINDS NIH HHS R21 NS071479
6 · The paper itself

Abstract

The classical late infantile neuronal ceroid lipofuscinosis (LINCLs) is an autosomal recessive disease, where the defective gene is Cln2, encoding tripeptidyl-peptidase I (TPP1). At the molecular level, LINCL is caused by accumulation of autofluorescent storage materials in neurons and other cell types. Currently, there is no established treatment for this fatal disease. This study reveals a novel use of gemfibrozil and fenofibrate, Food and Drug Administration-approved lipid-lowering drugs, in up-regulating TPP1 in brain cells. Both gemfibrozil and fenofibrate up-regulated mRNA, protein, and enzymatic activity of TPP1 in primary mouse neurons and astrocytes as well as human astrocytes and neuronal cells. Because gemfibrozil and fenofibrate are known to activate peroxisome proliferator-activated receptor-α (PPARα), the role of PPARα in gemfibrozil- and fenofibrate-mediated up-regulation of TPP1 was investigated revealing that both drugs up-regulated TPP1 mRNA, protein, and enzymatic activity both in vitro and in vivo in wild type (WT) and PPARβ(-/-), but not PPARα(-/-), mice. In an attempt to delineate the mechanism of TPP1 up-regulation, it was found that the effects of the fibrate drugs were abrogated in the absence of retinoid X receptor-α (RXRα), a molecule known to form a heterodimer with PPARα. Accordingly, all-trans-retinoic acid, alone or together with gemfibrozil, up-regulated TPP1. Co-immunoprecipitation and ChIP studies revealed the formation of a PPARα/RXRα heterodimer and binding of the heterodimer to an RXR-binding site on the Cln2 promoter. Together, this study demonstrates a unique mechanism for the up-regulation of TPP1 by fibrate drugs via PPARα/RXRα pathway.

Indexed as

Up-RegulationAminopeptidasesAnimalsAstrocytesBrainDipeptidyl-Peptidases and Tripeptidyl-PeptidasesFenofibrateGemfibrozilGene Expression Regulation, DevelopmentalHumansHypolipidemic AgentsLysosomesMiceNeuronal Ceroid-LipofuscinosesNeuronsPPAR alphaAminopeptidasesDipeptidyl-Peptidases and Tripeptidyl-PeptidasesFenofibrateGemfibrozilHypolipidemic AgentsPPAR alphaRetinoid X Receptor alphaSerine ProteasesTPP1 protein, humanTpp1 protein, mouseTripeptidyl-Peptidase 1

Identifiers

PMID22989886
PMCPMC3493933
OpenAlexW2049983395

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.