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Bovine intramuscular adipocytes RNA-seq

ABSTRACT: Bovine intramuscular adipocytes RNA-seq

PROVIDER: PRJNA770998 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16315906_1.fastq.gz	Fastqsanger.gz
	SRR16315906_2.fastq.gz	Fastqsanger.gz
	SRR16315907_1.fastq.gz	Fastqsanger.gz
	SRR16315907_2.fastq.gz	Fastqsanger.gz
	SRR16315908_1.fastq.gz	Fastqsanger.gz

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Project description:Adipogenesis involves complex interactions between transcription and metabolic signalling. Exploration of the developmental characteristics of intramuscular adipocyte will provide targets for enhancing beef cattle marbling without increasing obesity. Few reports have compared bovine perirenal and intramuscular adipocyte transcriptomes using the combined analysis of transcriptomes and lipid metabolism to explore differences in adipogenic characteristics. We identified perirenal preadipocytes (PRA) and intramuscular preadipocytes (IMA) in Qinchuan cattle. We found that IMA were highly prolific in the early stages of adipogenesis, while PRA shows a stronger adipogenic ability in the terminal differentiation. Bovine perirenal and intramuscular adipocytes were detected through the combined analysis of the transcriptome and metabolome. More triglyceride was found to be upregulated in perirenal adipocytes; however, more types and amounts of unsaturated fatty acids were detected in intramuscular adipocytes, including eicosapentaenoic acid (20:5 n-3; EPA) and docosahexaenoic acid (22:6 n-3; DHA). Furthermore, differentially expressed genes in perirenal and intramuscular adipocytes were positively correlated with the eicosanoid, phosphatidylcholine (PC), phosphatidyl ethanolamine (PE), and sphingomyelin contents. Associated differential metabolic pathways included the glycerolipid and glycerophospholipid metabolisms. Our research findings provide a basis for the screening of key metabolic pathways or genes and metabolites involved in intramuscular fat production in cattle.

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Effect of overexpress of circPPARG1 on gene expression during adipogenic differentiation of Intramuscular adipocytes

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Project description:Beef marbling is caused by intramuscular deposition, and it is an economically important trait in the beef industry. Vitamin A (VA) is an important feed supplement for cattle, but it can hinder marbling if provided in excess. In cattle, VA forms various derivatives such as all-trans retinoic acid (ATRA) and 9-cis retinoic acid (9cRA). Therefore, we investigated the genes involved in bovine intramuscular adipogenesis after VA treatment with ATRA and 9cRA. Differential gene expression levels were validated by microarray analysis in a clonal bovine intramuscular preadipocyte (BIP) cell line derived from the intramuscular adipose tissue of Japanese Black cattle. BIP cells were harvested six days after adipogenic stimulation with either 1 ?M ATRA, 1 ?M 9cRA, or nonretinoic acids control. The ATRA- and 9cRA-treated cells exhibited reduced transcription of genes involved in the circulatory system and muscle development compared with the no retinoic acid (RA) treatment. In addition, the ATRA- and 9cRA-treated cells exhibited increased transcription of genes involved in the immune system, protein kinase B signaling, and responses to various stimuli. These results demonstrate the lower expression of muscle development in ATRA- and 9cRA-treated BIP cells during adipogenesis. BIP cells were cultured according to previously reported methods (Aso et al. 1995, Mizoguchi et al. 2014). Confluent cultures were transferred to fresh Dulbecco’s modified Eagle’s medium, which contained 50 ng/mL insulin, 0.25 ?M dexamethasone, 5 mM octanoate, 10 mM acetic acid, 10% fetal bovine serum, 100 U/mL penicillin, and 100 ?g/mL streptomycin. The cells were cultured for up to 6 days and the medium was changed every 2 days. BIP cells were treated with ATRA (1 ?M), 9cRA (1 ?M), or they received no treatment (control).

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