Evidence map›Paper›PMID 20043993›Full record

ArticleMechanisms of development2010

Downregulated expression of the secreted glycoprotein follistatin-like 1 (Fstl1) is a robust hallmark of preadipocyte to adipocyte conversion.

Yu Wu, Shengli Zhou, Cynthia M Smas

Abstract read
In one paragraph

Article in Mechanisms of development, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
1.0field-weighted citation impact, top 24% 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

34 citing papers in PubMed, 58 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Follistatin like-1 (Adipocyte · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Article
  19. Structural and functional study of FK domain of Fstl1.Protein science : a publication of the Protein Society · 2019
    Article
  20. Beyond the bone: Bone morphogenetic protein signaling in adipose tissue.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2019
    Review
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

3 authors at 1 institution in 1 country.

Yu WuDepartment of Biochemistry and Cancer Biology, Center for Diabetes and Endocrine Research, University of Toledo College of Medicine, Toledo, OH 43614, USA.
Shengli Zhou
Cynthia M Smas
University of Toledo · US

Funding

MOLECULAR DISSECTION OF REGIONAL ADIPOSITYR21DK064992 · NIDDK · UNIVERSITY OF TOLEDO HEALTH SCI CAMPUS · PI SMAS, CYNTHIA M · 2003 to 2004
$294k
FUNCTIONAL ANALYSIS OF SMAF1, AN OBESITY CANDIDATE GENER21DK066055 · NIDDK · UNIVERSITY OF TOLEDO HEALTH SCI CAMPUS · PI SMAS, CYNTHIA M · 2004 to 2005
$294k
NIDDK NIH HHS R21 DK064992NIDDK NIH HHS R21 DK066055
6 · The paper itself

Abstract

Obesity is a public health crisis in the United States. Targeting preadipocyte to adipocyte conversion may be an effective approach to regulate adipose mass. Using differential screening we identified Fstl1, a secreted glycoprotein with roles in immunomodulation, cell growth, cardioprotection, and vascularization, as a "preadipokine". Fstl1 is highly expressed in 3T3-L1 preadipocytes and dramatically downregulated early in their differentiation to adipocytes. Northern blot analysis of murine tissues reveals white adipose tissue (WAT), lung and heart as primary sites of Fstl1 transcript expression. In WAT, Fstl1 transcript is restricted to the preadipocyte-containing stromal-vascular cell population. Time course studies in multiple adipogenesis models reveal downregulation of Fstl1 is a hallmark of white and brown adipocyte conversion. By Western blot, we show culture media of 3T3-L1 preadipocytes contains high levels of Fstl1 protein that rapidly decline in adipocyte conversion. Moreover, we observe a correlation between preadipocyte phenotype and Fstl1 expression in that TNFalpha-mediated de-differentiation of 3T3-L1 adipocytes is accompanied by re-expression of Fstl1 transcript and protein. Treatment of 3T3-L1 preadipocytes with a panel of 18 hormones and other agents revealed the demethylating agent 5-aza-cytidine decreases Fstl1 transcript and protein levels by approximately 90%. Furthermore, of 10 additional preadipocyte-expressed genes analyzed we find Pref-1, Col1A1, Sca-1/Ly6a, Lox and Thbs2, are also downregulated by 5-aza-cytidine. Using luciferase reporter constructs containing 791 or 3922 bp of the Fstl1 5' flanking region, we determine negative transcriptional regulation by Kruppel-like factor 15. Together, our data suggest downregulation of Fstl1 expression may be an important feature of preadipocyte to adipocyte conversion.

Indexed as

Down-Regulation3T3-L1 CellsAdipocytesAnimalsBlotting, NorthernBlotting, WesternCell DifferentiationFollistatin-Related ProteinsMiceRNA, MessengerFollistatin-Related ProteinsFstl1 protein, mouseRNA, Messengeradipogenesisadipose tissuedifferentiationFstl1obesityPreadipocytesecreted factorTsc-36

Identifiers

PMID20043993
PMCPMC2849861
OpenAlexW2031640133

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.