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The Circadian Protein Nocturnin Regulates Metabolic Adaptation in Brown Adipose Tissue

ABSTRACT: The Circadian Protein Nocturnin Regulates Metabolic Adaptation in Brown Adipose Tissue

PROVIDER: PRJNA549845 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9331120.fastq.gz	Fastqsanger.gz
	SRR9331121.fastq.gz	Fastqsanger.gz
	SRR9331112.fastq.gz	Fastqsanger.gz
	SRR9331122.fastq.gz	Fastqsanger.gz
	SRR9331113.fastq.gz	Fastqsanger.gz

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The Circadian Protein Nocturnin Regulates Metabolic Adaptation in Brown Adipose Tissue

Project description:Fine-tuning of transcriptional responses can be critical for long-term outcomes in response to an environmental challenge. The circadian protein Nocturnin belongs to a family of proteins that include exonucleases, endonucleases and phosphatases and is most closely related to the CCR4 family of deadenylases that regulate the cellular transcriptome via control of polyA tail length of RNA transcripts. In this study, we investigate the role of Nocturnin in regulating the transcriptional response and downstream metabolic adaptations during cold exposure in brown adipose tissue. We find that Nocturnin exhibits dual localization within the cytosol and mitochondria, and loss of Nocturnin causes changes in expression of networks of mRNAs involved in mitochondrial function. Furthermore, Nocturnin-/- animals display significantly elevated levels of TCA cycle intermediates indicating that they have distinct metabolic adaptations during a prolonged cold exposure. We conclude that cold-induced stimulation of Nocturnin levels can regulate long-term metabolic adaptations to environmental challenges.

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Biological Aging and Circadian Mechanisms in Murine Brown Adipose Tissue, Inguinal White Adipose Tissue, and Liver

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Project description:SIRT1 is a NAD+-dependent protein deacetylase. SIRT1 plays key roles in metabolic regulation and adaptation. In this study, we examined the difference of gene expression in brown adipose tissue from WT and SIRT1tg mice. SIRT1 transgenic model (heterozygous transgenic model) has already been described (Pfluger et al., 2008). Here we used homozygote transgenic mice which had been backcrossed to C57Bl/6N background. 3 months old WT and SIRT1tg mice were fed with a low fat diet. After sacrifice, total mRNA obtained from brown adipose were used for microarray.

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LSD1 complexes - Lsd1 Ablation Triggers Metabolic Reprogramming of Brown Adipose Tissue

Project description:Lsd1 ablation triggers metabolic reprogramming of brown adipose tissue. Lsd1 protein complexes were purified from mouse adipose tissue and analyzed by label-free LC-MS/MS. Mice were kept under different conditions prior complex isolation.

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Brown Adipose Tissue

Project description:Brown Adipose Tissue

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Project description:Cold exposure imposes a metabolic challenge to mammals that must be met by a coordinated repsonse in different tissues to prevent hypothermia. This study reports analysis of transcriptome profiles in brown adipose tissue, liver, white adipose of mice in repsonse to 24 hour cold exposure Total RNA was extracted from brown adipose, whie adipose and liver from cold treated and control plants. 3 replicates of brown adipose and white adipose and 2 replicates of liver samples.

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Project description:Brown adipose tissue (BAT) plays an essential role in metabolic homeostasis by dissipating energy via thermogenesis through uncoupling protein 1 (Ucp1). Previously, we reported that the TATA-binding protein Associated Factor 7L (Taf7l) is an important regulator of white adipose tissue (WAT) differentiation. Here, we show that Taf7l also serves as a molecular switch between brown fat and muscle lineages in vivo and in vitro. In adipose tissue, Taf7l containing TFIID complexes associate with PPAR to mediate DNA looping between distal enhancers and core promoter elements. Our findings suggest that presence of the tissue-specific Taf7l subunit in TFIID functions to promote long-range chromatin interactions during BAT lineage specification. mRNA-seq expression profiling wild type and Taf7l knockout interscapular brown adipose tissue (BAT)

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The Circadian Protein Nocturnin Regulates Metabolic Adaptation in Brown Adipose Tissue.

Project description:Fine-tuning of transcriptional responses can be critical for long-term outcomes in response to an environmental challenge. The circadian protein Nocturnin belongs to a family of proteins that include exonucleases, endonucleases, and phosphatases and is most closely related to the CCR4 family of deadenylases that regulate the cellular transcriptome via control of poly(A) tail length of RNA transcripts. In this study, we investigate the role of Nocturnin in regulating the transcriptional response and downstream metabolic adaptations during cold exposure in brown adipose tissue. We find that Nocturnin exhibits dual localization within the cytosol and mitochondria, and loss of Nocturnin causes changes in expression of networks of mRNAs involved in mitochondrial function. Furthermore, Nocturnin-/- animals display significantly elevated levels of tricarboxylic acid cycle intermediates, indicating that they have distinct metabolic adaptations during a prolonged cold exposure. We conclude that cold-induced stimulation of Nocturnin levels can regulate long-term metabolic adaptations to environmental challenges.

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