Evidence map›Paper›PMID 18573883›Full record

ArticleMolecular and cellular biology2008

Regulation of ABCG2 expression at the 3' untranslated region of its mRNA through modulation of transcript stability and protein translation by a putative microRNA in the S1 colon cancer cell line.

Kenneth K W To, Zhirong Zhan, Thomas Litman, Susan E Bates

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing papers in PubMed, 1 pooled it
5.4field-weighted citation impact, top 4% 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

82 citing papers in PubMed, 1 synthesis or guideline pooled it, 163 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. MiRNAs: main players of cancer drug resistance target ABC transporters.Naunyn-Schmiedeberg's archives of pharmacology · 2025
    Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
  12. International journal of molecular sciences · 2023
    Article
  13. Attenuation of Dopaminergic Neurodegeneration in aJournal of developmental biology · 2023
    Article
  14. ABCG2 in Acute Myeloid Leukemia: Old and New Perspectives.International journal of molecular sciences · 2023
    Review
  15. Review
  16. Review
  17. Multidrug efflux transporter ABCG2: expression and regulation.Cellular and molecular life sciences : CMLS · 2021
    Review
  18. Exploration of the Important Role of Microfibril-Associated Protein 4 Gene in Oral Squamous Cell Carcinoma.Medical science monitor : international medical journal of experimental and clinical research · 2021
    Article
  19. Review
  20. Review

22 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

4 authors at 2 institutions in 1 country.

Kenneth K W ToMolecular Therapeutics Section, Medical Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bldg. 10, Room 13N220, 10 Center Drive, Bethesda, MD 20892-4255, USA. tok@mail.nih.gov
Zhirong Zhan
Thomas Litman
Susan E Bates
National Institutes of Health · USNational Cancer Institute · US

Funding

Investigation of the ABC Half-Transporter ABCG2ZIABC010622 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI BATES, SUSAN · 2009 to 2015
$2.3M
Investigation of the ABC Half-Transporter ABCG2Z01BC010622 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI BATES, SUSAN · 2004 to 2008
$1.5M
Intramural NIH HHS
6 · The paper itself

Abstract

ABCG2 is recognized as an important efflux transporter in clinical pharmacology and is potentially important in resistance to chemotherapeutic drugs. To identify epigenetic mechanisms regulating ABCG2 mRNA expression at its 3' untranslated region (3'UTR), we performed 3' rapid amplification of cDNA ends with the S1 parental colon cancer cell line and its drug-resistant ABCG2-overexpressing counterpart. We found that the 3'UTR is >1,500 bp longer in parental cells and, using the miRBase TARGETs database, identified a putative microRNA (miRNA) binding site, distinct from the recently reported hsa-miR520h site, in the portion of the 3'UTR missing from ABCG2 mRNA in the resistant cells. We hypothesized that the binding of a putative miRNA at the 3'UTR of ABCG2 suppresses the expression of ABCG2. In resistant S1MI80 cells, the miRNA cannot bind to ABCG2 mRNA because of the shorter 3'UTR, and thus, mRNA degradation and/or repression on protein translation is relieved, contributing to overexpression of ABCG2. This hypothesis was rigorously tested by reporter gene assays, mutational analysis at the miRNA binding sites, and forced expression of miRNA inhibitors or mimics. The removal of this epigenetic regulation by miRNA could be involved in the overexpression of ABCG2 in drug-resistant cancer cells.

Indexed as

Gene Expression Regulation, NeoplasticProtein BiosynthesisRNA Stability3' Untranslated RegionsATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2Base SequenceBinding SitesCell Line, TumorColonic NeoplasmsDrug Resistance, NeoplasmGenes, ReporterHumansLuciferasesMicroRNAsModels, Genetic3' Untranslated RegionsABCG2 protein, humanATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily G, Member 2LuciferasesMicroRNAsNeoplasm Proteins

Identifiers

PMID18573883
PMCPMC2519722
OpenAlexW2098957807

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.