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TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [ChIP-seq]

ABSTRACT: TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [ChIP-seq]

PROVIDER: PRJNA951644 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24046238_1.fastq.gz	Fastqsanger.gz
	SRR24046238_2.fastq.gz	Fastqsanger.gz
	SRR24046239_1.fastq.gz	Fastqsanger.gz
	SRR24046239_2.fastq.gz	Fastqsanger.gz
	SRR24046240_1.fastq.gz	Fastqsanger.gz

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TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1

Project description:TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1

| PRJNA951639 | ENA

TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [RNA-seq]

Project description:TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [RNA-seq]

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TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [ChIP-seq]

Project description:Purpose: The goals of this study are to explore role of Tox3 in glucose homeostasis Methods: Tox3-activation was generated by adenovirus from Genechem.Successful activation of Tox3 was determined by mRNA and protein expression.

2024-01-22 | GSE228791 | GEO

TOX3 drives hepatic gluconeogenesis and hyperglycemia by targeting FoxO1 [RNA-seq]

2024-01-22 | GSE228790 | GEO

DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

Project description:One of the causes of hyperglycemia in type 2 diabetes is elevated hepatic glucose production. AKT-FOXO1 pathway is primarily involved in the hormonal upregulation of this process, and pharmacological or genetic inhibition of this pathway prevents diabetes in animal models. Here we report that DYRK1B regulates FoxO1 function through phosphorylation to regulate hepatic glucose metabolism. DYRK1B expression is induced by fasting and in diabetic mice. DYRK1B promoted hepatic gluconeogenesis and glucose intolerance in in vivo and in vitro model systems. Liver-specific DYRK1B conditional knockout mice were protected from diet-induced hyperglycemia. Mechanistically, DYRK1B interacted with and phosphorylated FoxO1, primarily at T467S468, which is required for its nuclear localization. DYRK1B inhibited AKT mediated FoxO1 phosphorylation at T24 and S256 and enhanced its nuclear retention. DYRK1B mediated phosphorylation of FoxO1 enhanced the expression of gluconeogenic genes and promoted gluconeogenesis. Treatment with DYRK1B pharmacological inhibitor AZ191 significantly lowered blood glucose levels in diabetic mice. We conclude that DYRK1B is a regulator of glucose metabolism, and its pharmacological inhibition could serve as therapeutic target for treating diabetes.

2025-04-30 | GSE263028 | GEO

DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

2025-04-30 | GSE262106 | GEO

DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

Project description:Dual-specificity tyrosine phosphorylation-regulated kinase 1B (DYRK1B), a member of the CMGC group of kinase, is associated with metabolic syndrome. However, the molecular mechanisms involved remain elusive. In this study, we demonstrate that Dyrk1b expression is induced in liver by fasting and in diabetic mice. Using both in vivo and in vitro studies, we show that DYRK1B promotes hepatic gluconeogenesis and glucose intolerance. Liver-specific Dyrk1b conditional knockout mice were protected from diet-induced hyperglycemia. Mechanistically, DYRK1B interacts with and phosphorylates FOXO1, primarily at Thr467/Ser468, which is essential for its nuclear localization. Additionally, DYRK1B inhibits AKT mediated FOXO1 phosphorylation at Thr24 and Ser256, thereby enhancing its nuclear retention. DYRK1B mediated phosphorylation enhances the expression of gluconeogenic genes and promotes gluconeogenesis. Further, a pharmacological inhibitor of DYRK1B significantly reduced blood glucose levels in diabetic mice. Collectively, these findings offer new insights into DYRK1B’s role in the glucose metabolism and identify it as a new therapeutic target for treating diabetes.

2025-05-07 | PXD052214 | Pride

DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

Project description:DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

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DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

Project description:DYRK1B phosphorylates FOXO1 to promote hepatic gluconeogenesis

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Proline exacerbates hepatic gluconeogenesis via paraspeckle-dependent mRNA retention

Project description:Type 2 Diabetes (T2D) is a global health issue characterized by abnormal blood glucose levels and often associated with excessive hepatic gluconeogenesis. Increased circulating non-essential amino acids (NEAAs) are consistently observed in T2D individuals; however, the specific contribution of each amino acid to T2D pathogenesis remains less understood. Here, we reported an unexpected role of the NEAA proline in coordinating hepatic glucose metabolism by modulating paraspeckle, a nuclear structure scaffolded by the long noncoding RNA Neat1. Mechanistically, proline diminished paraspeckles in hepatocytes, liberating the retained mRNA species into cytoplasm for translation, including the mRNAs of Ppargc1a and Foxo1, contributing to enhanced gluconeogenesis and hyperglycemia. We further demonstrated that the proline-paraspeckle-mRNA retention axis existed in diabetic liver samples, and intervening this axis via paraspeckle restoration significantly alleviated hyperglycemia in both female and male diabetic mouse models. Collectively, our results not only delineated a previously unappreciated proline-instigated, paraspeckle-dependent mRNA retention mechanism regulating gluconeogenesis, but also spotlighted proline and paraspeckle as potential targets for managing hyperglycemia. This SuperSeries is composed of the SubSeries listed below.

2024-11-26 | GSE252452 | GEO

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