Hepatic posttranscriptional network comprised of CCR4–NOT deadenylase and FGF21 maintains systemic metabolic homeostasis

Masahiro Morita, Nadeem Siddiqui, Sakie Katsumura, Christopher Rouya, Ola Larsson, Takeshi Nagashima, Bahareh Hekmatnejad, Akinori Takahashi, Hiroshi Kiyonari, Mengwei Zang, René St-Arnaud, Yuichi Oike, Vincent Giguère, Ivan Topisirovic, Mariko Okada-Hatakeyama, Tadashi Yamamoto, Nahum Sonenberg

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Whole-body metabolic homeostasis is tightly controlled by hormone-like factors with systemic or paracrine effects that are derived from nonendocrine organs, including adipose tissue (adipokines) and liver (hepatokines). Fibroblast growth factor 21 (FGF21) is a hormone-like protein, which is emerging as a major regulator of whole-body metabolism and has therapeutic potential for treating metabolic syndrome. However, the mechanisms that control FGF21 levels are not fully understood. Herein, we demonstrate that FGF21 production in the liver is regulated via a posttranscriptional network consisting of the CCR4–NOT deadenylase complex and RNA-binding protein tristetraprolin (TTP). In response to nutrient uptake, CCR4–NOT cooperates with TTP to degrade AU-rich mRNAs that encode pivotal metabolic regulators, including FGF21. Disruption of CCR4–NOT activity in the liver, by deletion of the catalytic subunit CNOT6L, increases serum FGF21 levels, which ameliorates diet-induced metabolic disorders and enhances energy expenditure without disrupting bone homeostasis. Taken together, our study describes a hepatic CCR4–NOT/FGF21 axis as a hitherto unrecognized systemic regulator of metabolism and suggests that hepatic CCR4–NOT may serve as a target for devising therapeutic strategies in metabolic syndrome and related morbidities.

Original languageEnglish (US)
Pages (from-to)7973-7981
Number of pages9
JournalProceedings of the National Academy of Sciences of the United States of America
Volume116
Issue number16
DOIs
StatePublished - Apr 16 2019

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Keywords

  • CCR4–NOT
  • Deadenylase
  • FGF21
  • Hepatokine
  • Metabolic syndrome

ASJC Scopus subject areas

  • General

Cite this

Morita, M., Siddiqui, N., Katsumura, S., Rouya, C., Larsson, O., Nagashima, T., Hekmatnejad, B., Takahashi, A., Kiyonari, H., Zang, M., St-Arnaud, R., Oike, Y., Giguère, V., Topisirovic, I., Okada-Hatakeyama, M., Yamamoto, T., & Sonenberg, N. (2019). Hepatic posttranscriptional network comprised of CCR4–NOT deadenylase and FGF21 maintains systemic metabolic homeostasis. Proceedings of the National Academy of Sciences of the United States of America, 116(16), 7973-7981. https://doi.org/10.1073/pnas.1816023116