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PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (Spatial Transcriptomics)

ABSTRACT: The loss of compact myocardial cardiomyocyte (compact CM) identity suggests that PRDM16 deficiency may dramatically alter the cellular composition in left ventricular (LV) compact myocardium. To test this hypothesis, we performed single-cell RNA-seq (scRNA-seq) to examine gene dysreulation in Prdm16cKO heart. We also performed Visium Spatial Transcriptomics (ST) to facilitate mapping CM clusters to their original locations in the heart. As a result, we were able to demonstrate gene misregulation in Prdm16cKO mouse mainly occurred in LV compact CM.

ORGANISM(S): Mus musculus

PROVIDER: GSE179392 | GEO | 2021/12/20

REPOSITORIES: GEO

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PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (scRNA-seq)

Project description:The loss of compact myocardial cardiomyocyte (compact CM) identity suggests that PRDM16 deficiency may dramatically alter the cellular composition in left ventricular (LV) compact myocardium. To test this hypothesis, we performed single-cell RNA-seq (scRNA-seq) to examine gene dysreulation in Prdm16cKO heart. We also performed Visium Spatial Transcriptomics (ST) to facilitate mapping CM clusters to their original locations in the heart. As a result, we were able to demonstrate gene misregulation in Prdm16cKO mouse mainly occurred in LV compact CM.

2021-12-20 | GSE179390 | GEO

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (ChIP-seq)

Project description:Identification of genome-wide PRDM16 binding sites in E13.5 whole mouse heart, as well as in isolated left ventricle (LV) and right ventricle (RV).

2021-12-20 | GSE179371 | GEO

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (bulk RNA-seq)

Project description:Gene expression profiling in whole heart, left ventricle (LV) and right ventricle (RV) of WT and Prdm16 conditional knockout (Prdm16cKO) mouse (Prdm16flox/flox; Xmlc2-Cre) at embryonic day 13.5 (E13.5).

2021-12-20 | GSE179386 | GEO

PRDM16 Is a Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle

Project description:PRDM16 Is a Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle

| PRJNA743532 | ENA

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (ChIP-seq)

Project description:PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (ChIP-seq)

| PRJNA743351 | ENA

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (Spatial Transcriptomics)

Project description:PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (Spatial Transcriptomics)

| PRJNA743536 | ENA

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (scRNA-seq)

Project description:PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (scRNA-seq)

| PRJNA743535 | ENA

PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (bulk RNA-seq)

Project description:PRDM16 Functions as A Compact Myocardium-Enriched Transcription Factor Required to Maintain Compact Myocardial Cardiomyocyte Identity in Left Ventricle (bulk RNA-seq)

| PRJNA743527 | ENA

Prdm16 Knockout Brown Adipose Tissue

Project description:Gene expression profile from brown adipose tissues of Prdm16 knockout and wile type mice. Prdm16 is a transcription factor that regulates the thermogenic gene program in brown and beige adipocytes. However, whether Prdm16 is required for the development or physiological function of brown adipose tissue (BAT) in vivo has been unclear. By analyzing mice that selectively lacked Prdm16 in the brown adipose lineage, we found that Prdm16 was dispensable for embryonic BAT development. Brown adipose tissues were collected from Prdm16 knockout and wiletype mice with 4 biological replicates per condition. Experiment was done in two separate batch for 6-week-old and 11-month-old. Extracted RNA was hybridized to Agilent two-color arrays.

2014-04-09 | E-GEOD-55080 | biostudies-arrayexpress

Prdm16 deficiency leads to age-dependent cardiac hypertrophy, adverse remodeling, mitochondrial dysfunction, and heart failure

Project description:Hypertrophic cardiomyopathy (HCM) is one of the most frequent inherited heart condition and a well-established risk factor for cardiovascular mortality worldwide. Although hypertrophy is traditionally regarded as an adaptive response to increased workload caused by physiological or pathological stress, prolonged hypertrophy can lead to heart failure characterized by impaired systolic function, increased apoptosis, fibrosis, ventricular dilation, and impaired metabolic substrate flexibility. While the key regulators for cardiac hypertrophy are well studied, the role of Prdm16 in this process remains poorly understood. In the present study, we demonstrate that Prdm16 is dispensable for cardiac development. However, it is required in the adult heart to preserve mitochondrial function and inhibit hypertrophy with advanced age. Cardiac-specific deletion of Prdm16 results in cardiac hypertrophy, excessive ventricular fibrosis, mitochondrial dysfunction, and impaired metabolic flexibility, leading to heart failure. We demonstrate that Prdm16 and euchromatic histone-lysine N- methyltransferase factors (Ehmts) act together to reduce the expression of fetal genes reactivated in pathological hypertrophy by inhibiting the functions of pro- hypertrophic transcription factor Myc. Although young Prdm16 knockout mice show normal cardiac function, they are predisposed to develop heart failure in response to metabolic stress. Collectively, our results demonstrate that Prdm16 protects the heart against age-dependent cardiac hypertrophy, fibrosis, mitochondrial dysfunction, adverse metabolic remodeling, and heart failure.

2020-09-21 | GSE153988 | GEO

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