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Remodelling of whol...
Remodelling of whole-body lipid metabolism and a diabetic-like phenotype caused by loss of CDK1 and hepatocyte division
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- Ow, Jin Rong (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Cadez, Matias J (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Zafer, Gözde (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Foo, Juat Chin (author)
- National University of Singapore
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- Li, Hong Yu (author)
- Agency for Science, Technology and Research (A*STAR)
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- Ghosh, Soumita (author)
- National University of Singapore
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- Wollmann, Heike (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Cazenave-Gassiot, Amaury (author)
- National University of Singapore
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- Ong, Chee Bing (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Wenk, Markus R (author)
- National University of Singapore
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- Han, Weiping (author)
- A*Star Institute of Molecular and Cell Biology (IMCB)
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- Choi, Hyungwon (author)
- National University of Singapore
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- Kaldis, Philipp (author)
- Lund University,Lunds universitet,Metabolism och leversjukdomar,Forskargrupper vid Lunds universitet,Metabolic disorders and liver disease,Lund University Research Groups
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(creator_code:org_t)
- 2020
- 2020
- English.
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In: eLife. - 2050-084X. ; 9
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Abstract
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- Cell cycle progression and lipid metabolism are well-coordinated processes required for proper cell proliferation. In liver diseases that arise from dysregulated lipid metabolism, proliferation is diminished. To study the outcome of CDK1 loss and blocked hepatocyte proliferation on lipid metabolism and the consequent impact on whole-body physiology, we performed lipidomics, metabolomics, and RNA-seq analyses on a mouse model. We observed reduced triacylglycerides in liver of young mice, caused by oxidative stress that activated FOXO1 to promote expression of ATGL. Additionally, we discovered that hepatocytes displayed malfunctioning b-oxidation, reflected by increased acylcarnitines and reduced b-hydroxybutyrate. This led to elevated plasma free fatty acids, which were transported to the adipose tissue for storage and triggered greater insulin secretion. Upon aging, chronic hyperinsulinemia resulted in insulin resistance and hepatic steatosis through activation of LXR. Here we demonstrate that loss of hepatocyte proliferation is not only an outcome but possibly causative for liver pathology.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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eLife
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- By the author/editor
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Ow, Jin Rong
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Cadez, Matias J
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Zafer, Gözde
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Foo, Juat Chin
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Li, Hong Yu
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Ghosh, Soumita
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show more...
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Wollmann, Heike
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Cazenave-Gassiot ...
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Ong, Chee Bing
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Wenk, Markus R
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Han, Weiping
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Choi, Hyungwon
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Kaldis, Philipp
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Basic Medicine
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and Cell and Molecul ...
- Articles in the publication
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eLife
- By the university
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Lund University