Cited by 61Glycogen Storage Diseases and MyoclonusMetabolism and Genetic DisordersAutophagy in Disease and Therapy

A Liver-Specific Thyromimetic, VK2809, Decreases Hepatosteatosis in Glycogen Storage Disease Type Ia

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Zhou, Jin, Waskowicz, Lauren R., Lim, Andrea, Liao, Xiao-Hui, Lian, Brian, Masamune, Hiroko, Refetoff, Samuel, Tran, Brian +2 more·2019·Thyroid®

Abstract

Background: Glycogen storage disease type Ia (GSD Ia), also known as von Gierke disease, is the most common glycogen storage disorder. It is caused by the deficiency of glucose-6-phosphatase, the enzyme that catalyzes the final step of gluconeogenesis and glycogenolysis. The accumulation of glucose-6-phosphate leads to increased glycogen and triglyceride levels in the liver. Patients with GSD Ia can develop steatohepatitis, cirrhosis, and increased risk for hepatocellular adenomas and carcinomas. We previously showed that animal models of GSD Ia had defective autophagy and dysfunctional mitochondria. In this study, we examined the effect of VK2809, a liver-specific thyroid hormone receptor β agonist, on hepatic steatosis, autophagy, and mitochondrial biogenesis in a mouse model of GSD Ia. Methods: G6pc -/- -deficient (GSD Ia) mice were treated with VK2809 or vehicle control by daily intraperitoneal injection for four days. The hepatic triglyceride and glycogen were determined by biochemical assays. Autophagy and mitochondrial biogenesis were measured by Western blotting for key autophagy and mitochondrial markers. Results: VK2809 treatment decreased hepatic mass and triglyceride content in GSD Ia mice. VK2809 stimulated hepatic autophagic flux as evidenced by increased microtubule-associated protein light chain 3-II (LC3B-II), decreased p62 protein levels, activation of AMP-activated protein kinase (AMPK), inhibition of the mammalian target of rapamycin (mTOR) signaling, enha…

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Crossref · 10.1089/thy.2019.0007

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  • VK2809, a liver-specific THRβ agonist, decreased hepatic triglyceride levels in mice by simultaneous restoration of autophagy, mitochondrial biogenesis, and β-oxidation of fatty acids.

    “VK2809, a liver-specific THRβ agonist, decreased hepatic triglyceride levels in mice by simultaneous restoration of autophagy, mitochondrial biogenesis, and β-oxidation of fatty acids (80).”

    From Emerging Therapies in Hypothyroidism (2024) · cites this paper as [80]

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Authors
Zhou, J., Waskowicz, L. R., Lim, A., Liao, X.-H., Lian, B., Masamune, H., Refetoff, S., Tran, B., Koeberl, D. D., & Yen, P. M.
Affiliations
  • Duke-NUS Medical School (SG)
  • Duke Medical Center (US)
  • University of Chicago (US)
  • Viking Therapeutics (United States) (US)
  • Duke University (US)
  • National University of Singapore (SG)
Corresponding author
  • Koeberl, Dwight D.
  • Yen, Paul M.
Venue
Thyroid®
Published
2019-08
Volume
29
Issue
8
Pages
1158-1167
ISSN
  • 1050-7256 (ISSN-L)
  • 1557-9077
OpenAlex
W2962815903
Cited by
60
References
44
Citations by year
2026: 6 · 2025: 10 · 2024: 11 · 2023: 11 · 2022: 8 · 2021: 6 · 2020: 6 · 2019: 2
FWCI
4.36
Type
journal article
Language
en
Open access
Locations
  • Thyroid (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK105434, R01DK015070)
Topics
  • Health Sciences › Medicine › Rheumatology › Glycogen Storage Diseases and Myoclonus
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
glycogen storage disease type Ia, von Gierke disease, hepatic steatosis, thyroid hormone receptor beta agonist, autophagy, mitochondrial biogenesis, fatty acid beta-oxidation, AMPK/mTOR signaling, glucose-6-phosphatase deficiency, non-alcoholic fatty liver disease, FGF21, CPT1A
MeSH terms
Animals, Autophagy, Organelle Biogenesis, Disease Models, Animal, Fatty Acids, Fatty Liver, Glucose-6-Phosphatase, Glycogen Storage Disease Type I, Glycogen, Liver, Mitochondria, Liver, Oxidation-Reduction, Triglycerides, Mice, Knockout, Thyroid Hormone Receptors beta, Mice, Organophosphonates

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