Evidence map›Paper›PMID 21741923›Full record

ArticleGastroenterology2011

Disruption of the mouse protein tyrosine kinase 6 gene prevents STAT3 activation and confers resistance to azoxymethane.

Jessica Gierut, Yu Zheng, Wenjun Bie, Robert E Carroll, Susan Ball-Kell, Andrea Haegebarth, Angela L Tyner

Open access · bronzeAbstract read
In one paragraph

Article in Gastroenterology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

21 citing papers in PubMed, 25 citations in OpenAlex.

  1. Novel Functionalized Pyrrolopyridines to Target Brk.Molecules (Basel, Switzerland) · 2026
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  9. Targeting protein tyrosine kinase 6 in cancer.Biochimica et biophysica acta. Reviews on cancer · 2020
    Review
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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

7 authors at 2 institutions in 1 country.

Jessica GierutDepartment of Biochemistry and Molecular Genetics, University of Illinois at Chicago, Chicago, Illinois 60607, USA.
Yu Zheng
Wenjun Bie
Robert E Carroll
Susan Ball-Kell
Andrea Haegebarth
Angela L Tyner
University of Illinois Chicago · USIllinois College · US

Funding

ISOLATION OF GENETIC MARKERS FOR INTESTINAL CRYPT CELLSR01DK044525 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI TYNER, ANGELA L · 1993 to 2016
$4.8M
Training--Signal Transduction and Cellular EndocrinologyT32DK007739 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI ACKERMAN, STEVEN JULES · 1997 to 2011
$1.5M
ISOLATION OF GENETIC MARKERS FOR INTESTINAL CRYPT CELLSR55DK044525 · NIDDK · UNIVERSITY OF ILLINOIS AT CHICAGO · PI TYNER, ANGELA L · 1992 to 1992
–
NIDDK NIH HHS DK44525NIDDK NIH HHS R01 DK044525NIDDK NIH HHS T32 DK007739NIDDK NIH HHS T32 DK07739
6 · The paper itself

Abstract

BACKGROUND &

aimsProtein tyrosine kinase 6 (PTK6) is expressed throughout the gastrointestinal tract and is a negative regulator of proliferation that promotes differentiation and DNA-damage-induced apoptosis in the small intestine. PTK6 is not expressed in normal mammary gland, but is induced in most human breast tumors. Signal transducer and activator of transcription 3 (STAT3) mediates pathogenesis of colon cancer and is a substrate of PTK6. We investigated the role of PTK6 in colon tumorigenesis.

methodsPtk6+/+ and Ptk6-/- mice were injected with azoxymethane alone or in combination with dextran sodium sulfate; formation of aberrant crypt foci and colon tumors was examined. Effects of disruption of Ptk6 on proliferation, apoptosis, and STAT3 activation were examined by immunoblot and immunohistochemical analyses. Regulation of STAT3 activation was examined in the HCT116 colon cancer cell line and young adult mouse colon cells.

resultsPtk6-/- mice developed fewer azoxymethane-induced aberrant crypt foci and tumors. Induction of PTK6 increased apoptosis, proliferation, and STAT3 activation in Ptk6+/+ mice injected with azoxymethane. Disruption of Ptk6 impaired STAT3 activation following azoxymethane injection, and reduced active STAT3 levels in Ptk6-/- tumors. Stable knockdown of PTK6 reduced basal levels of active STAT3, as well as activation of STAT3 by epidermal growth factor in HCT116 cells. Disruption of Ptk6 reduced activity of STAT3 in young adult mouse colon cells.

conclusionsPTK6 promotes STAT3 activation in the colon following injection of the carcinogen azoxymethane and regulates STAT3 activity in mouse colon tumors and in the HCT116 and young adult mouse colon cell lines. Disruption of Ptk6 decreases azoxymethane-induced colon tumorigenesis in mice.

Indexed as

AzoxymethaneCarcinogensAberrant Crypt FociAnimalsApoptosisCell ProliferationColonColonic NeoplasmsDextran SulfateDisease Models, AnimalHCT116 CellsHumansImmunoblottingImmunohistochemistryMiceMice, KnockoutAzoxymethaneCarcinogensDextran SulfateNeoplasm ProteinsProtein-Tyrosine KinasesPTK6 protein, humanPtk6 protein, mousesrc-Family KinasesSTAT3 protein, humanStat3 protein, mouseSTAT3 Transcription Factor

Identifiers

PMID21741923
PMCPMC3448944
OpenAlexW2094021507

What OpenQuestion holds

Textmetadata
LicenceTDM
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.