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Mizuhopecten yessoensis

ABSTRACT: Bulk RNA-seq analysis of scallop hemocytes

PROVIDER: PRJDB15197 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR439337_1.fastq.gz	Fastqsanger.gz
	DRR439337_2.fastq.gz	Fastqsanger.gz
	DRR439338_1.fastq.gz	Fastqsanger.gz
	DRR439338_2.fastq.gz	Fastqsanger.gz
	DRR439339_1.fastq.gz	Fastqsanger.gz

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Mizuhopecten yessoensis

Project description:Single-cell RNA-seq analysis of scallop hemocytes

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Integrated transcriptomics and metabolomics reveal tolerance mechanisms to hypoxia stress in Yesso scallop, Mizuhopecten yessoensis

Project description:Global warming and human activities have led to an increased frequency of hypoxia in coastal regions. Hypoxia not only affects the growth and development of scallops but can also cause death, posing a significant challenge to the health and sustainability of aquaculture. Its effects on scallop growth and immune system have been widely reported, but studies on the effects of hypoxic stress on the metabolism of Yesso scallop Mizuhopecten yessoensis are not fully understood. Additionally, the molecular mechanisms of hypoxic stress on damage to the Yesso scallop are still limited. In this study, we deploy high-throughput RNA sequencing (RNA-Seq) and non-targeted liquid chromatography-mass spectrometry (LC-MS) based metabolomics analysis to investigate the alterations in key genes and metabolites in scallops after 24 hours of hypoxia stress (DO: 1 ± 0.1 mg/L). A total of 704 differentially expressed genes (DEGs) and 302 differentially expressed metabolites (DEMs) were identified in the gill tissues of Yesso scallops under hypoxic conditions, respectively. DEGs and DEMs were involved in energy metabolism, antioxidant responses, immune responses, and inflammatory responses, as well as processes of cell apoptosis and cell proliferation. KEGG enrichment analysis shows that the mTOR signaling pathway is a significantly enriched pathway shared by DEGs and DEMs. These findings suggest that Yesso scallops cope with acute hypoxic stress by changing energy metabolism, inhibiting cell apoptosis and proliferation, and increasing immune defense strategies. Overall, the results of this study provide a new understanding of how Yesso scallops respond to hypoxia and provide target genes for the selection and breeding of low-oxygen-tolerant scallops.

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Mizuhopecten yessoensis

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Project description:Mizuhopecten yessoensis strain:Japanese scallop Transcriptome or Gene expression

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Project description:The scallop Mizuhopecten yessoensis accumulates carotenoids in the ovary during the maturation stage. Its conspicuous pink color implies the presence of carotenoprotein. However, the carotenoprotein from the scallop ovary has never been isolated and characterized, probably due to its instability and complexity. Here, we developed an extraction and isolation procedure for the carotenoprotein by employing a basic buffer containing potassium bromide to facilitate its efficient extraction from the ovary, and we succeeded in obtaining the carotenoprotein, termed pectenovarin. The carotenoid composition of the pectenovarin was similar to that of the ovary. The N-terminal and internal amino acid sequences of pectenovarin showed a high similarity to those of vitellogenin, the precursor of egg yolk protein under analysis.

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