Fenretinide prevents obesity in aged female mice in association with increased retinoid and estrogen-signaling

Kirsty D Shearer, Nicola Morrice, Claire Henderson, Jenny Reekie, George McIlroy, Peter J McCaffery, Mirela Delibegovic, Nimesh Mody* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Objective
The synthetic retinoid Fenretinide (FEN) inhibits adiposity in male mice fed a high-fat-diet (HFD) in association with alterations in retinoic acid (RA)-signaling. Young female mice are protected from obesity via estrogen-signaling. We therefore investigated whether FEN also influences adiposity in aged female mice differing in parity, and whether such effects are mediated by retinoid and estrogen-signaling.
Design and Methods
Aged nulliparous and parous female mice were maintained on HFD±FEN and adiposity was assessed. Quantitative-PCR was performed on white adipose tissue (WAT), liver and 3T3-L1 adipocytes treated with RA or FEN±estrogen.
Results
Parous females were more obese than nulliparous mice independent of age. FEN-HFD prevented the HFD-induced increase in adiposity and leptin levels independently of parity. FEN-HFD induced retinoid-responsive genes in WAT and liver. Parous females had reduced expression of hepatic estrogen-responsive genes but FEN-HFD up-regulated WAT Cyp19a1 and Esr2 in parous mice. Estrogen and RA acted synergistically to increase RA-receptor (RAR)-mediated gene expression in 3T3-L1 adipocytes. FEN increased Cyp19a1 and Esr2, similar to our findings in vivo.
Conclusions
The prevention of adiposity by FEN in response to HFD in female mice appears to involve increased retinoid-signaling in association with induction of local estrogen production and estrogen-signaling in WAT.
Original languageEnglish
Pages (from-to)1655-1662
Number of pages8
JournalObesity
Volume23
Issue number8
Early online date14 Jul 2015
DOIs
Publication statusPublished - Aug 2015

Bibliographical note

Acknowledgments
The authors thank J.R. Speakman (UoA) for invaluable discussion regarding energy expenditure, T. Martin (Johnson & Johnson, NJ) and U. Thurneer (Cilag AG, Switzerland) for fenretinide, to use completely without restriction or obligation, and undergraduate student K. Towle (UoA) for assisting in experiments.

Funded by
British Heart Foundation Intermediate Basic Research Fellowship. Grant Number: FS/09/026
Research Councils UK Fellowship
European Foundation for the Study of Diabetes (EFSD)/Lilly
Biotechnology and Biological Sciences Research Council (BBSRC) studentship
University of Aberdeen (UoA) Centre for Genome-Enabled Biology & Medicine (CGEBM) studentship
BBSRC. Grant Number: BB/G014272/1

Keywords

  • Female Mice
  • Aged
  • Fenretinide
  • Obesity
  • Retinoid
  • Estrogen

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