Whole‑transcriptome analysis of mouse adipose tissue in response to short‑term caloric restriction

Seung Soo Kim, Kyung Mi Choi, Soyoung Kim, Taesun Park, In Cheol Cho, Jae Won Lee, Cheol Koo Lee

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Caloric restriction (CR) has been shown to extend the lifespan of many species by improving cellular function and organismal health. Additionally, fat reduction by CR may play an important role in lengthening lifespan and preventing severe age-related diseases. Interestingly, CR induced the greatest transcriptome change in the epididymal fat of mice in our study. In this transcriptome analysis, we identified and categorized 446 genes that correlated with CR level. We observed downregulation of several signaling pathways, including insulin/ insulin-like growth factor 1 (insulin/IGF-1), epidermal growth factor (EGF), transforming growth factor beta (TGF-β), and canonical wingless-type mouse mammary tumor virus integration site (Wnt). Many genes related to structural features, including extracellular matrix structure, cell adhesion, and the cytoskeleton, were down-regulated, with a strong correlation to the degree of CR. Furthermore, genes related to the cell cycle and adipogenesis were down-regulated. These biological processes are well-identified targets of insulin/IGF-1, EGF, TGF-β, and Wnt signaling. In contrast, genes involved in specific metabolic processes, including the tricarboxylic acid cycle and the electron transport chain were up-regulated. We performed in silico analysis of the promoter sequences of CR-responsive genes and identified two associated transcription factors, Paired-like homeodomain 2 (Pitx2) and Paired box gene 6 (Pax6).

Original languageEnglish
Pages (from-to)831-847
Number of pages17
JournalMolecular Genetics and Genomics
Issue number2
Publication statusPublished - 2016 Apr 1

Bibliographical note

Publisher Copyright:
© Springer-Verlag Berlin Heidelberg 2015.

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics


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