Evidence map›Paper›PMID 19074836›Full record

ArticleMolecular cancer research : MCR2008

Notch inhibits expression of the Krüppel-like factor 4 tumor suppressor in the intestinal epithelium.

Amr M Ghaleb, Gaurav Aggarwal, Agnieszka B Bialkowska, Mandayam O Nandan, Vincent W Yang

Open access · bronzeAbstract read
In one paragraph

Article in Molecular cancer research : MCR, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
4.7field-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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 112 citations in OpenAlex.

  1. Pooled it
  2. Porcine intestinal goblet cells: Guardians of mucosal immunity and barrier function.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026
    Review
  3. Article
  4. Cells · 2025
    Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. The Partial Role of KLF4 and KLF5 in Gastrointestinal Tumors.Gastroenterology research and practice · 2021
    Review
  12. Review
  13. KLF4 Regulates Goblet Cell Differentiation in BMI1International journal of stem cells · 2020
    Article
  14. Cancer Stem Cells,Cells · 2020
    Review
  15. Review
  16. Article
  17. Review
  18. Review
  19. Article
  20. Review

6 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

5 authors at 1 institution in 1 country.

Amr M GhalebDivision of Digestive Diseases, Department of Medicine, Emory University School of Medicine, 615 Michael Street, Atlanta, GA 30322, USA.
Gaurav Aggarwal
Agnieszka B Bialkowska
Mandayam O Nandan
Vincent W Yang
Emory University · US

Funding

REGULATION OF INTESTINAL EPITHELIAL CELL PROLIFERATIONR01DK052230 · NIDDK · STATE UNIVERSITY NEW YORK STONY BROOK · PI Vincent W Yang · 1997 to 2026
$8.7M
MECHANISMS OF INTESTINAL TUMORIGENESISR01CA084197 · NCI · STATE UNIVERSITY NEW YORK STONY BROOK · PI YANG, VINCENT W · 2000 to 2020
$7.5M
Emory Epithelial Pathobiology Research Development CenterR24DK064399 · NIDDK · EMORY UNIVERSITY · PI PARKOS, CHARLES A · 2003 to 2012
$5.3M
Role of Kruppel-Like Factor 4 in Wnt and Notch Signaling in the Intestinal TractF32CA130308 · NCI · EMORY UNIVERSITY · PI GHALEB, AMR · 2008 to 2010
$172k
NCI NIH HHS CA 130308NCI NIH HHS CA 84197NCI NIH HHS F32 CA130308NCI NIH HHS R01 CA084197NIDDK NIH HHS DK 52230NIDDK NIH HHS DK 64399NIDDK NIH HHS R01 DK052230NIDDK NIH HHS R24 DK064399
6 · The paper itself

Abstract

The zinc finger-containing transcription factor, Krüppel-like factor 4 (KLF4), inhibits cell proliferation. An in vivo tumor-suppressive role for KLF4 is shown by the recent finding that Klf4 haploinsufficiency in Apc(Min/+) mice promotes intestinal tumorigenesis. Studies also show that KLF4 is required for the terminal differentiation of goblet cells in the mouse intestine. The Notch signaling pathway suppresses goblet cell formation and is up-regulated in intestinal tumors. Here, we investigated the relationship between Notch signaling and KLF4 expression in intestinal epithelial cells. The rate of proliferation of HT29 human colon cancer cells was reduced when treated with the gamma-secretase inhibitor dibenzazepine to inhibit Notch signaling or small interfering RNA directed against Notch. KLF4 levels were increased in dibenzazepine-treated or Notch small interfering RNA-treated cells. Conversely, overexpression of Notch in HT29 cells reduced KLF4 levels, suppressed KLF4 promoter activity, and increased proliferation rate. Treatment of Apc(Min/+) mice with dibenzazepine resulted in a 50% reduction in the number of intestinal adenomas compared with the vehicle-treated group (P < 0.001). Both the normal-appearing intestinal mucosa and adenomas obtained from dibenzazepine-treated Apc(Min/+) mice had increased goblet cell numbers and Klf4 staining accompanied by reduced cyclin D1 and Ki-67 staining when compared with those from vehicle-treated mice. Results of these studies indicate that Notch signaling suppresses KLF4 expression in intestinal tumors and colorectal cancer cells. Inhibition of Notch signaling increases KLF4 expression and goblet cell differentiation and reduces proliferation and tumor formation. KLF4 is therefore a potential mediator for the antitumor effect of Notch inhibitors such as dibenzazepine.

Indexed as

AdenomaAdenomatous Polyposis Coli ProteinAnimalsCell DivisionColorectal NeoplasmsDibenzazepinesGene Expression Regulation, NeoplasticGoblet CellsHT29 CellsHumansIntestinal MucosaKruppel-Like Factor 4Kruppel-Like Transcription FactorsMiceMice, Inbred StrainsMice, Mutant StrainsAdenomatous Polyposis Coli ProteindibenzazepineDibenzazepinesKLF4 protein, humanKlf4 protein, mouseKruppel-Like Factor 4Kruppel-Like Transcription FactorsNOTCH1 protein, humanReceptor, Notch1

Identifiers

PMID19074836
PMCPMC2628949
OpenAlexW2149170725

What OpenQuestion holds

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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.