Evidence map›Paper›PMID 22270359›Full record

ArticleThe Journal of biological chemistry2012

Leptin-induced epithelial-mesenchymal transition in breast cancer cells requires β-catenin activation via Akt/GSK3- and MTA1/Wnt1 protein-dependent pathways.

Dan Yan, Dimiter Avtanski, Neeraj K Saxena, Dipali Sharma

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 121 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
121citing papers in PubMed, 3 pooled it
10.4field-weighted citation impact, top 1% 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

121 citing papers in PubMed, 3 syntheses or guidelines pooled it, 193 citations in OpenAlex.

  1. Pooled it
  2. Leptin signaling in breast cancer and its crosstalk with peroxisome proliferator-activated receptors α and γ.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2023
    Pooled it
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  17. Obesity and cancer: focus on leptin.Molecular biology reports · 2023
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61 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 4 institutions in 1 country.

Dan YanEmory University School of Medicine, Atlanta, Georgia 30322, USA.
Dimiter Avtanski
Neeraj K Saxena
Dipali Sharma
Emory University · USJohns Hopkins University · USSidney Kimmel Comprehensive Cancer Center · USUniversity of Maryland, Baltimore · US

Funding

Role of adipocytokines, leptin and adiponectin in breast carcinogenesisR01CA131294 · NCI · JOHNS HOPKINS UNIVERSITY · PI SHARMA, DIPALI · 2009 to 2014
$1.6M
Proliferative Responses to Enteric Bacterial Pathogens in Intestinal TissuesK01DK076742 · NIDDK · EMORY UNIVERSITY · PI MCCONNELL, BETH B · 2007 to 2011
$667k
Adiponectin effects on leptin signaling in hepatocellular carcinomaR03DK089130 · NIDDK · UNIVERSITY OF MARYLAND BALTIMORE · PI SAXENA, NEERAJ KUMAR · 2010 to 2011
$149k
NCI NIH HHS R01 CA131294NCI NIH HHS R01CA131294NIDDK NIH HHS K01 DK076742NIDDK NIH HHS K01DK076742NIDDK NIH HHS R03 DK089130NIDDK NIH HHS R03DK089130
6 · The paper itself

Abstract

Perturbations in the adipocytokine profile, especially higher levels of leptin, are a major cause of breast tumor progression and metastasis; the underlying mechanisms, however, are not well understood. In particular, it remains elusive whether leptin is involved in epithelial-mesenchymal transition (EMT). Here, we provide molecular evidence that leptin induces breast cancer cells to undergo a transition from epithelial to spindle-like mesenchymal morphology. Investigating the downstream mediator(s) that may direct leptin-induced EMT, we found functional interactions between leptin, metastasis-associated protein 1 (MTA1), and Wnt1 signaling components. Leptin increases accumulation and nuclear translocation of β-catenin leading to increased promoter recruitment. Silencing of β-catenin or treatment with the small molecule inhibitor, ICG-001, inhibits leptin-induced EMT, invasion, and tumorsphere formation. Mechanistically, leptin stimulates phosphorylation of glycogen synthase kinase 3β (GSK3β) via Akt activation resulting in a substantial decrease in the formation of the GSK3β-LKB1-Axin complex that leads to increased accumulation of β-catenin. Leptin treatment also increases Wnt1 expression that contributes to GSK3β phosphorylation. Inhibition of Wnt1 abrogates leptin-stimulated GSK3β phosphorylation. We also discovered that leptin increases the expression of an important modifier of Wnt1 signaling, MTA1, which is integral to leptin-mediated regulation of the Wnt/β-catenin pathway as silencing of MTA1 inhibits leptin-induced Wnt1 expression, GSK3β phosphorylation, and β-catenin activation. Furthermore, analysis of leptin-treated breast tumors shows increased expression of Wnt1, pGSK3β, and vimentin along with higher nuclear accumulation of β-catenin and reduced E-cadherin expression providing in vivo evidence for a previously unrecognized cross-talk between leptin and MTA1/Wnt signaling in epithelial-mesenchymal transition of breast cancer cells.

Indexed as

Epithelial-Mesenchymal TransitionWnt Signaling Pathwaybeta CateninBreast NeoplasmsBridged Bicyclo Compounds, HeterocyclicCadherinsCell Line, TumorCell NucleusFemaleGene Expression Regulation, NeoplasticGlycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaHistone DeacetylasesHumansLeptinPhosphorylationbeta CateninBridged Bicyclo Compounds, HeterocyclicCadherinsGlycogen Synthase Kinase 3Glycogen Synthase Kinase 3 betaGSK3B protein, humanHistone DeacetylasesICG 001LeptinMTA1 protein, humanProto-Oncogene Proteins c-aktPyrimidinonesRepressor ProteinsTrans-ActivatorsVimentinWnt1 ProteinWNT1 protein, human

Identifiers

PMID22270359
PMCPMC3318705
OpenAlexW2047487133

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.