Evidence map›Paper›PMID 16210377›Full record

ArticleEndocrinology2006

Testosterone inhibits adipogenic differentiation in 3T3-L1 cells: nuclear translocation of androgen receptor complex with beta-catenin and T-cell factor 4 may bypass canonical Wnt signaling to down-regulate adipogenic transcription factors.

Rajan Singh, Jorge N Artaza, Wayne E Taylor, Melissa Braga, Xin Yuan, Nestor F Gonzalez-Cadavid, Shalender Bhasin

Open access · bronzeAbstract read
In one paragraph

Article in Endocrinology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 150 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
150citing papers in PubMed, 4 pooled it
9.0field-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

150 citing papers in PubMed, 4 syntheses or guidelines pooled it, 366 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Intracrine and myotrophic roles of 5α-reductase and androgens: a review.Medicine and science in sports and exercise · 2012
    Pooled it
  5. Article
  6. Review
  7. Article
  8. Metabolic Messengers: testosterone.Nature metabolism · 2026
    Review
  9. Review
  10. Review
  11. Biomedicines · 2025
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

90 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

7 authors at 2 institutions in 1 country.

Rajan SinghDivision of Endocrinology, Metabolism, and Molecular Medicine, Charles R. Drew School of Medicine, Los Angeles, California 90059, USA. rajansingh@mednet.ucla.edu
Jorge N Artaza
Wayne E Taylor
Melissa Braga
Xin Yuan
Nestor F Gonzalez-Cadavid
Shalender Bhasin
Charles R. Drew University of Medicine and Science · USHarvard University · US

Funding

Continuation of Clin Islet Transplantation Consortium: Data Coordinating CenterU01DK070431 · NIDDK · UNIVERSITY OF IOWA · PI CLARKE, WILLIAM R. · 2004 to 2014
$54.8M
RESEARCH INFORMATICS COREG12RR003026 · NCRR · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI BAKER, RICHARD S. · 1986 to 2004
$11.5M
THE BIOLOGIC EFFECTS OF ANDROGENS IN MEN AND WOMENU54HD041748 · NICHD · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI FRIEDMAN, THEODORE C · 2003 to 2010
$6.5M
Testosterone Action on Muscle Injury and RepairS06GM068510 · NIGMS · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI SINHA HIKIM, AMIYA P · 2003 to 2010
$5.2M
Charles R Drew University College of Allied Health Unde*P20MD000545 · NIMHD · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI ORUM-ALEXANDER, GAIL · 2003 to 2007
$4.7M
Role of 5-alpha Reductase in Testosterone ActionsR01HD043348 · NICHD · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI BHASIN, SHALENDAR · 2003 to 2007
$1.7M
Testosterone:Physical Function in Men on HemodialysisR01DK059627 · NIDDK · CHARLES R. DREW UNIVERSITY OF MED &SCI · PI BHASIN, SHALENDAR · 2001 to 2004
$1.7M
Mechanisms of Testosterone Effects on Body CompositionR01DK070534 · NIDDK · BOSTON MEDICAL CENTER · PI BHASIN, SHALENDAR · 2004 to 2007
$1.5M
Role of Follistatin during Androgen Regulation of Body CompositionSC1AG033407 · NIA · CHARLES R. DREW UNIVERSITY OF MED & SCI · PI SINGH, RAJAN · 2008 to 2011
$1.3M
NCRR NIH HHS G12 RR003026NCRR NIH HHS G12RR03026NIA NIH HHS SC1 AG033407NICHD NIH HHS 1R01HD043348-01NICHD NIH HHS R01 HD043348NICHD NIH HHS U54 HD041748NICHD NIH HHS U54HD041748-0NIDDK NIH HHS 1R01DK59627-01NIDDK NIH HHS 1R01DK70431-01NIDDK NIH HHS R01 DK059627NIDDK NIH HHS R01 DK070534NIDDK NIH HHS U01 DK070431NIGMS NIH HHS 1S06-GM068510-03NIGMS NIH HHS S06 GM068510NIMHD NIH HHS 1P20MD000545-02NIMHD NIH HHS P20 MD000545
6 · The paper itself

Abstract

Testosterone supplementation in men decreases fat mass; however, the mechanisms by which it inhibits fat mass are unknown. We hypothesized that testosterone inhibits adipogenic differentiation of preadipocytes by activation of androgen receptor (AR)/beta-catenin interaction and subsequent translocation of this complex to the nucleus thereby bypassing canonical Wnt signaling. We tested this hypothesis in 3T3-L1 cells that differentiate to form fat cells in adipogenic medium. We found that these cells express AR and that testosterone and dihydrotestosterone dose-dependently inhibited adipogenic differentiation as analyzed by Oil Red O staining and down-regulation of CCAAT/enhancer binding protein-alpha and -delta and peroxisome proliferator-activated receptor-gamma2 protein and mRNA. These inhibitory effects of androgens were partially blocked by flutamide or bicalutamide. Androgen treatment was associated with nuclear translocation of beta-catenin and AR. Immunoprecipitation studies demonstrated association of beta-catenin with AR and T-cell factor 4 (TCF4) in the presence of androgens. Transfection of TCF4 cDNA inhibited adipogenic differentiation, whereas a dominant negative TCF4 cDNA construct induced adipogenesis and blocked testosterone's inhibitory effects. Our gene array analysis indicates that testosterone treatment led to activation of some Wnt target genes. Expression of constitutively activated AR fused with VP-16 did not inhibit the expression of CCAAT/enhancer binding protein-alpha in the absence of androgens. Testosterone and dihydrotestosterone inhibit adipocyte differentiation in vitro through an AR-mediated nuclear translocation of beta-catenin and activation of downstream Wnt signaling. These data provide evidence for a regulatory role for androgens in inhibiting adipogenic differentiation and a mechanistic explanation consistent with the observed reduction in fat mass in men treated with androgens.

Indexed as

3T3 CellsAdipocytesAdipose TissueAnimalsbeta CateninCell DifferentiationCell NucleusGene Expression RegulationMiceProtein TransportReceptors, AndrogenReverse Transcriptase Polymerase Chain ReactionRNA, MessengerSignal TransductionTCF Transcription FactorsTestosteronebeta CateninReceptors, AndrogenRNA, MessengerTcf7l2 protein, mouseTCF Transcription FactorsTestosteroneTranscription Factor 7-Like 2 ProteinTranscription FactorsWnt Proteins

Identifiers

PMID16210377
PMCPMC4417624
OpenAlexW2064549818

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.