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Transcriptomic profiling of subcutaneous white adipose tissue with selective ablation of Bmal1 at ambient and cold condition

ABSTRACT: Transcriptomic profiling of subcutaneous white adipose tissue with selective ablation of Bmal1 at ambient and cold condition

PROVIDER: PRJNA758698 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR15663772.fastq.gz	Fastqsanger.gz
	SRR15663773.fastq.gz	Fastqsanger.gz
	SRR15663774.fastq.gz	Fastqsanger.gz
	SRR15663775.fastq.gz	Fastqsanger.gz
	SRR15663776.fastq.gz	Fastqsanger.gz

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Transcriptomic profiling of subcutaneous white adipose tissue with selective ablation of Bmal1 at ambient and cold condition

Project description:Mice with beige fat-selective ablation of Bmal1 were generated by crossing Bmal1fl/fl with Prrx1-Cre transgenics. Inguinal subcutaneous adipsoe tissues were collected under ambient temperature at 220C or cold acclimations at 10oC for two weeks.

2021-08-31 | GSE183000 | GEO

Mouse Liver Chromatin Circadian ChIP_seq for Bmal1 and Ruvbl2

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Soil sample (ambient and elevated co2 condition)

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TMT analysis of proteomic changes in the gastrocnemius skeletal muscles of WT and Bmal1-KO mice, and Bmal1-KO mice rescued with AAV-mediated muscle-specific expression of Bmal1.

Project description:TMT analysis of proteomic changes in the gastrocnemius skeletal muscles of WT and Bmal1-KO mice, and Bmal1-KO mice rescued with AAV-mediated muscle-specific expression of Bmal1.

2024-10-03 | PXD054406 | Pride

Proteomics analysis of regulation by Bmal1 and physiological time-restricted feeding

Project description:To define regulation of tissue proteomes by Bmal1, daily feeding rhythm, and the interaction, we employed Bmal1-stopFL mice, which do not express the main transcriptional activator of the molecular clock, Bmal1, except in cre recombinase-expressing cells1,2 (Figure 1A). Bmal1-stopFL mice lacking cre (Bmal1 knockout, KO) are analogous to Bmal1-null mice and display severely impaired behavioral and molecular rhythms1-3. Hepatocyte-specific Alfp-cre and skeletal muscle-specific Hsa-cre genes were introduced to generate a single line wherein both hepatocyte and skeletal muscle Bmal1 were reconstituted (Liver+Muscle-RE), i.e., rescued (Smith, Koronowski et al. 2023). This approach had the benefit of analyzing liver and muscle from the same mice but comes with the qualification that the abundance of some proteins may be influenced by Bmal1 function in the other tissue, or by a synergistic effect of Bmal1 in both tissues, rather than through rescue of local Bmal1 function alone. Proteomic anlaysis was performed in liver and skeletal muscle.

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LC-MS/MS identification of BMAL1 interaction proteins

Project description:Advances in circadian research revealed an intricate relationship between aging and circadian rhythms. However, whether and how the circadian machinery contribute to stem cell aging, especially in primates, remains poorly understood. In this study, we investigated the role of BMAL1, the only non-redundant circadian clock component, during aging in mesenchymal progenitor cells (MPCs). We observed an accelerated aging phenotype in both BMAL1 deficient human and cynomolgus monkey MPCs. Notably, this phenotype is mainly attributed to a transcriptional-independent role of BMAL1 in stabilizing the heterochromatin and thus preventing LINE1 activation. In senescent MPCs from human and cynomolgus monkeys, dampened LINE1 binding capacity of BMAL1 and synergistically activated LINE1 transcripts were observed. Furthermore, similar de-stabilized heterochromatin and aberrant LINE1s transcription was observed in the skin and muscle tissues from BMAL1-deficient cynomolgus monkey. Altogether, these findings uncover a noncanonical role of BMAL1 in stabilizing heterochromatin to inactivate LINE1 that drives aging in primates.

2022-03-18 | PXD030570 | Pride

BMAL1 associates with NOP58 in the nucleolus and contributes to pre-rRNA processing

Project description:The transcription factor BMAL1 is a core element of the circadian clock that contributes to cyclic control of genes transcribed by RNA polymerase II. By using biochemical cellular fractionation and immunofluorescence analyses we reveal a previously uncharacterized nucleolar localization for BMAL1. We used an unbiased approach to determine the BMAL1 interactome by mass spectrometry and identified NOP58 as a prominent nucleolar interactor. NOP58, a core component of the box C/D small nucleolar ribonucleoprotein complex, associates with Snord118 to control specific pre-ribosomal RNA (rRNA) processing steps. These results suggest a non-canonical role of BMAL1 in rRNA regulation. Indeed, we show that BMAL1 controls NOP58-associated Snord118 nucleolar levels and cleavage of unique pre-rRNA intermediates. Our findings identify an unsuspected function of BMAL1 in the nucleolus that appears distinct from its canonical role in the circadian clock system

2020-08-25 | PXD018946 | Pride

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