Evidence map›Paper›PMID 23720741›Full record

ArticleThe Journal of biological chemistry2013

Matrix metalloproteinase (MMP) 9 transcription in mouse brain induced by fear learning.

Krishnendu Ganguly, Emilia Rejmak, Marta Mikosz, Evgeni Nikolaev, Ewelina Knapska, Leszek Kaczmarek

RetractedOpen access · hybridAbstract readRetracted Publication
In one paragraph

Article in The Journal of biological chemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

45 citing papers in PubMed, 97 citations in OpenAlex.

  1. Frontiers in cell and developmental biology · 2025
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. MMP2 and MMP9 Activity Is Crucial for Adult Visual Cortex Plasticity in Healthy and Stroke-Affected Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2022
    Article
  11. The association of matrix metalloproteinase 9 (MMP9) with hippocampal volume in schizophrenia: a preliminary MRI study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2022
    Article
  12. Disrupting interaction between miR-132 andFrontiers in molecular neuroscience · 2022
    Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Krishnendu GangulyFrom the Laboratory of Neurobiology and. Electronic address: k.ganguly@nencki.gov.pl.
Emilia RejmakFrom the Laboratory of Neurobiology and.
Marta MikoszLaboratory of Neurobiology of Emotions, Nencki Institute, Pasteur 3, 02-093 Warsaw, Poland.
Evgeni NikolaevFrom the Laboratory of Neurobiology and.
Ewelina KnapskaLaboratory of Neurobiology of Emotions, Nencki Institute, Pasteur 3, 02-093 Warsaw, Poland.
Leszek KaczmarekFrom the Laboratory of Neurobiology and. Electronic address: l.kaczmarek@nencki.gov.pl.
Instytut Biologii Doświadczalnej im. Marcelego Nenckiego · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Memory formation requires learning-based molecular and structural changes in neurons, whereas matrix metalloproteinase (MMP) 9 is involved in the synaptic plasticity by cleaving extracellular matrix proteins and, thus, is associated with learning processes in the mammalian brain. Because the mechanisms of MMP-9 transcription in the brain are poorly understood, this study aimed to elucidate regulation of MMP-9 gene expression in the mouse brain after fear learning. We show here that contextual fear conditioning markedly increases MMP-9 transcription, followed by enhanced enzymatic levels in the three major brain structures implicated in fear learning, i.e. the amygdala, hippocampus, and prefrontal cortex. To reveal the role of AP-1 transcription factor in MMP-9 gene expression, we have used reporter gene constructs with specifically mutated AP-1 gene promoter sites. The constructs were introduced into the medial prefrontal cortex of neonatal mouse pups by electroporation, and the regulation of MMP-9 transcription was studied after contextual fear conditioning in the adult animals. Specifically, -42/-50- and -478/-486-bp AP-1 binding motifs of the mouse MMP-9 promoter sequence have been found to play a major role in MMP-9 gene activation. Furthermore, increases in MMP-9 gene promoter binding by the AP-1 transcription factor proteins c-Fos and c-Jun have been demonstrated in all three brain structures under investigation. Hence, our results suggest that AP-1 acts as a positive regulator of MMP-9 transcription in the brain following fear learning.

Indexed as

FearLearningTranscription, GeneticAnimalsBase PairingBase SequenceBrainConditioning, PsychologicalDystroglycansGene Expression Regulation, EnzymologicMaleMatrix Metalloproteinase 9MiceMice, Inbred C57BLMolecular Sequence DataNucleotide MotifsDystroglycansMatrix Metalloproteinase 9Mmp9 protein, mouseProto-Oncogene Proteins c-fosProto-Oncogene Proteins c-junRNA, MessengerTranscription Factor AP-1AmygdalaAP1 Transcription FactorElectroporationFear LearningFosGene RegulationHippocampusJun Transcription FactorMatrix Metalloproteinase 9Medial Prefrontal Cortex

Identifiers

PMID23720741
PMCPMC3774367
OpenAlexW2083440158

What Socratic 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 Socratic graph.