Evidence map›Paper›PMID 20452353›Full record

ArticleGastroenterology2010

LKB1 haploinsufficiency cooperates with Kras to promote pancreatic cancer through suppression of p21-dependent growth arrest.

Jennifer P Morton, Nigel B Jamieson, Saadia A Karim, Dimitris Athineos, Rachel A Ridgway, Colin Nixon, Colin J McKay, Ross Carter, Valerie G Brunton, Margaret C Frame and 4 more

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in Gastroenterology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 96 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
96citing papers in PubMed, 5 pooled it
6.1field-weighted citation impact, top 3% 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

96 citing papers in PubMed, 5 syntheses or guidelines pooled it, 159 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Review
  7. Liver Kinase B1 in CD11cAdvanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026
    Article
  8. Review
  9. Loss of Lkb1 cooperates with BrafMolecular oncology · 2025
    Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Clinical and Molecular Attributes and Evaluation of Pancreatic Cystic Neoplasm.Biochimica et biophysica acta. Reviews on cancer · 2023
    Review
  18. Article
  19. Mouse models of Kras activation in gastric cancer.Experimental & molecular medicine · 2022
    Review
  20. Article

36 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

14 authors at 5 institutions in 1 country.

Jennifer P MortonBeatson Institute for Cancer Research, Garscube Estate, Glasgow, UK.
Nigel B Jamieson
Saadia A Karim
Dimitris Athineos
Rachel A Ridgway
Colin Nixon
Colin J McKay
Ross Carter
Valerie G Brunton
Margaret C Frame
Alan Ashworth
Karin A Oien
T R Jeffry Evans
Owen J Sansom
University of Glasgow · GBCancer Research UK Scotland Institute · GBEdinburgh Cancer Research · GBGlasgow Royal Infirmary · GBInstitute of Cancer Research · GB

Funding

Breast Cancer Now BREAST CANCER NOW RESEARCH CENTRECancer Research UK 12481Cancer Research UK C2193/A7603Chief Scientist Office CAF/06/24
6 · The paper itself

Abstract

BACKGROUND &

aimsPatients carrying germline mutations of LKB1 have an increased risk of pancreatic cancer; however, it is unclear whether down-regulation of LKB1 is an important event in sporadic pancreatic cancer. In this study, we aimed to investigate the impact of LKB1 down-regulation for pancreatic cancer in mouse and human and to elucidate the mechanism by which Lkb1 deregulation contributes to this disease.

methodsWe first investigated the consequences of Lkb1 deficiency in a genetically modified mouse model of pancreatic cancer, both in terms of disease progression and at the molecular level. To test the relevance of our findings to human pancreatic cancer, we investigated levels of LKB1 and its potential targets in human pancreatic cancer.

resultsWe definitively show that Lkb1 haploinsufficiency can cooperate with oncogenic KrasG12D to cause pancreatic ductal adenocarcinoma (PDAC) in the mouse. Mechanistically, this was associated with decreased p53/p21-dependent growth arrest. Haploinsufficiency for p21 (Cdkn1a) also synergizes with KrasG12D to drive PDAC in the mouse. We also found that levels of LKB1 expression were decreased in around 20% of human PDAC and significantly correlated with low levels of p21 and a poor prognosis. Remarkably, all tumors that had low levels of LKB1 had low levels of p21, and these tumors did not express mutant p53.

conclusionsWe have identified a novel LKB1-p21 axis that suppresses PDAC following Kras mutation in vivo. Down-regulation of LKB1 may therefore serve as an alternative to p53 mutation to drive pancreatic cancer in vivo.

Indexed as

AMP-Activated Protein Kinase KinasesAMP-Activated Protein KinasesAnimalsCarcinoma, Pancreatic DuctalCell Transformation, NeoplasticCyclin-Dependent Kinase Inhibitor p21Disease ProgressionGenes, Tumor SuppressorGenotypeHaplotypesHeterozygoteHomeodomain ProteinsHomozygoteHumansMiceMice, KnockoutAMP-Activated Protein Kinase KinasesAMP-Activated Protein KinasesCDKN1A protein, humanCdkn1a protein, mouseCyclin-Dependent Kinase Inhibitor p21Homeodomain ProteinsHras protein, mousepancreatic and duodenal homeobox 1 proteinProtein Serine-Threonine KinasesProto-Oncogene Proteins p21(ras)STK11 protein, humanStk11 protein, mouseTrans-ActivatorsTumor Suppressor Protein p53

Identifiers

PMID20452353
PMCPMC3770904
OpenAlexW2169265947

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.