Cited by 92Genetics and Neurodevelopmental DisordersEpigenetics and DNA MethylationGenomics and Chromatin Dynamics

Interaction of the Transcription Factors USF1, USF2, and α-Pal/Nrf-1 with the FMR1 Promoter

Open access
Kumari, Daman, Usdin, Karen·2001·Journal of Biological Chemistry

Abstract

Hypermethylation of the FMR1 promoter reduces its transcriptional activity, resulting in the mental retardation and macroorchidism characteristic of Fragile X syndrome. How exactly methylation causes transcriptional silencing is not known but is relevant if current attempts to reactivate the gene are to be successful. Understanding the effect of methylation requires a better understanding of the factors responsible for FMR1 gene expression. To this end we have identified five evolutionarily conserved transcription factor binding sites in this promoter and shown that four of them are important for transcriptional activity in neuronally derived cells. We have also shown that USF1, USF2, and alpha-Pal/Nrf-1 are the major transcription factors that bind the promoter in brain and testis extracts and suggest that elevated levels of these factors account in part for elevated FMR1 expression in these organs. We also show that methylation abolishes alpha-Pal/Nrf-1 binding to the promoter and affects binding of USF1 and USF2 to a lesser degree. Methylation may therefore inhibit FMR1 transcription not only by recruiting histone deacetylases but also by blocking transcription factor binding. This suggests that for efficient reactivation of the FMR1 promoter, significant demethylation must occur and that current approaches to gene reactivation using histone deacetylase inhibitors alone may therefore have limited effect.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1074/jbc.m009629200

Cites

28 of 28 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • These epigenetic changes promote a heterochromatic configuration that excludes specific transcription factors and turns gene expression off.

    “These epigenetic changes promote a heterochromatic configuration that excludes the binding of specific transcription factors (19), thus turning gene expression off (20).”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kumari, D., & Usdin, K.
Affiliations
National Institutes of Health (US)
Corresponding author
Usdin, Karen
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2001-02
Volume
276
Issue
6
Pages
4357-4364
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2069894990
Cited by
92
References
28
Citations by year
2025: 1 · 2023: 4 · 2021: 5 · 2020: 3 · 2019: 5 · 2018: 3 · 2017: 1 · 2016: 4 · 2015: 1 · 2014: 6 · 2013: 5 · 2012: 3
FWCI
4.00
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Heart, Lung, and Blood Institute
  • National Institute of Diabetes and Digestive and Kidney Diseases
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
Keywords
USF1, USF2, DNA methylation, transcriptional silencing, fragile X syndrome, transcription factor binding sites, histone deacetylase, gene reactivation, histone deacetylase inhibitors, brain, testis
MeSH terms
Animals, Base Sequence, DNA, DNA-Binding Proteins, Fragile X Syndrome, Humans, Molecular Sequence Data, Phylogeny, Promoter Regions, Genetic, Protein Binding, Sequence Homology, Nucleic Acid, Transcription Factors, Trans-Activators, DNA Footprinting, DNA Methylation, Nuclear Respiratory Factors, Nuclear Respiratory Factor 1, Mice, Sp3 Transcription Factor, Upstream Stimulatory Factors

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review