CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway

Abstract CDK5 Regulatory Subunit-Associated Protein 1-like 1 (CDKAL1) was identified as a susceptibility gene for type 2 diabetes and body mass index in genome-wide association studies. Although it was reported that CDKAL1 is a methylthiotransferase essential for tRNALys(UUU) and faithful translatio...

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Autores principales: Kazumi Take, Hironori Waki, Wei Sun, Takahito Wada, Jing Yu, Masahiro Nakamura, Tomohisa Aoyama, Toshimasa Yamauchi, Takashi Kadowaki
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Publicado: Nature Portfolio 2017
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spelling oai:doaj.org-article:a195ba72725844e2a8bc399e136fbc532021-12-02T16:06:40ZCDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway10.1038/s41598-017-06469-52045-2322https://doaj.org/article/a195ba72725844e2a8bc399e136fbc532017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06469-5https://doaj.org/toc/2045-2322Abstract CDK5 Regulatory Subunit-Associated Protein 1-like 1 (CDKAL1) was identified as a susceptibility gene for type 2 diabetes and body mass index in genome-wide association studies. Although it was reported that CDKAL1 is a methylthiotransferase essential for tRNALys(UUU) and faithful translation of proinsulin generated in pancreatic β cells, the role of CDKAL1 in adipocytes has not been understood well. In this study, we found that CDKAL1 is expressed in adipose tissue and its expression is increased during differentiation. Stable overexpression of CDKAL1, however, inhibited adipocyte differentiation of 3T3-L1 cells, whereas knockdown of CDKAL1 promoted differentiation. CDKAL1 increased protein levels of β-catenin and its active unphosphorylated form in the nucleus, thereby promoting Wnt target gene expression, suggesting that CDKAL1 activated the Wnt/β-catenin pathway—a well-characterized inhibitory regulator of adipocyte differentiation. Mutant experiments show that conserved cysteine residues of Fe-S clusters of CDKAL1 are essential for its anti-adipogenic action. Our results identify CDKAL1 as novel negative regulator of adipocyte differentiation and provide insights into the link between CDKAL1 and metabolic diseases such as type 2 diabetes and obesity.Kazumi TakeHironori WakiWei SunTakahito WadaJing YuMasahiro NakamuraTomohisa AoyamaToshimasa YamauchiTakashi KadowakiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Kazumi Take
Hironori Waki
Wei Sun
Takahito Wada
Jing Yu
Masahiro Nakamura
Tomohisa Aoyama
Toshimasa Yamauchi
Takashi Kadowaki
CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
description Abstract CDK5 Regulatory Subunit-Associated Protein 1-like 1 (CDKAL1) was identified as a susceptibility gene for type 2 diabetes and body mass index in genome-wide association studies. Although it was reported that CDKAL1 is a methylthiotransferase essential for tRNALys(UUU) and faithful translation of proinsulin generated in pancreatic β cells, the role of CDKAL1 in adipocytes has not been understood well. In this study, we found that CDKAL1 is expressed in adipose tissue and its expression is increased during differentiation. Stable overexpression of CDKAL1, however, inhibited adipocyte differentiation of 3T3-L1 cells, whereas knockdown of CDKAL1 promoted differentiation. CDKAL1 increased protein levels of β-catenin and its active unphosphorylated form in the nucleus, thereby promoting Wnt target gene expression, suggesting that CDKAL1 activated the Wnt/β-catenin pathway—a well-characterized inhibitory regulator of adipocyte differentiation. Mutant experiments show that conserved cysteine residues of Fe-S clusters of CDKAL1 are essential for its anti-adipogenic action. Our results identify CDKAL1 as novel negative regulator of adipocyte differentiation and provide insights into the link between CDKAL1 and metabolic diseases such as type 2 diabetes and obesity.
format article
author Kazumi Take
Hironori Waki
Wei Sun
Takahito Wada
Jing Yu
Masahiro Nakamura
Tomohisa Aoyama
Toshimasa Yamauchi
Takashi Kadowaki
author_facet Kazumi Take
Hironori Waki
Wei Sun
Takahito Wada
Jing Yu
Masahiro Nakamura
Tomohisa Aoyama
Toshimasa Yamauchi
Takashi Kadowaki
author_sort Kazumi Take
title CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
title_short CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
title_full CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
title_fullStr CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
title_full_unstemmed CDK5 Regulatory Subunit-Associated Protein 1-like 1 Negatively Regulates Adipocyte Differentiation through Activation of Wnt Signaling Pathway
title_sort cdk5 regulatory subunit-associated protein 1-like 1 negatively regulates adipocyte differentiation through activation of wnt signaling pathway
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/a195ba72725844e2a8bc399e136fbc53
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