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ABSTRACT: The transcriptome of chicken circulatory primordial germ cells

PROVIDER: PRJNA856993 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR20047277_1.fastq.gz	Fastqsanger.gz
	SRR20047277_2.fastq.gz	Fastqsanger.gz
	SRR20047278_1.fastq.gz	Fastqsanger.gz
	SRR20047278_2.fastq.gz	Fastqsanger.gz
	SRR20047279_1.fastq.gz	Fastqsanger.gz

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Project description:As germ cell precursor, primordial germ cells (PGCs) are widely used in transgenic animal production, regenerative medicine and other fields. However, the regulation mechanism of chicken PGCs is not incomplete, which leads to the insufficient amount of chicken PGCs obtained in vitro, which seriously affects the specific application of PGCs. During PGC formation (differentiation from ESCs to PGCs), some proteins have inconsistent changes in transcription level and protein abundance. Mediating proteasome degradation is one of the most important roles of protein ubiquitination, and enrichment analysis of transcriptome and proteome also suggests an important role of ubiquitination in the process of PGCs. In order to explore the important functions and potential targets of ubiquitination, we collected chicken ESCs and PGCs cells for label free ubiquitomics analysis. This study preliminarily analyzed how ubiquitination regulates the formation of chicken PGCs, providing a theoretical basis for the subsequent research and specific application of PGCs.

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Project description:In poultry, in vitro derived primordial germ cells (PGCs) represent an important tool for management of genetic resources. However, several studies have highlighted sexual differences exhibited by PGCs through in vitro steps, which may compromise their reproductive capacities. To understand this phenomenon, we compared the proteome of pregonadal chicken male (ZZ) and female (ZW) PGCs expanded in vitro by quantitative proteomic analysis using a GeLC-MS/MS strategy. The proteins found to be differentially abundant in chicken male and female PGCs indicated their early sexual identity. Many of the proteins up-accumulated in male PGCs were encoded by genes strongly enriched in the sexual chromosome Z. This suggests that the known lack of dosage compensation of the transcription of Z-linked genes between sexes persists at protein level in PGCs, and that this may be a key factor of their autonomous sex differentiation. Male and female PGCs up-accumulated protein sets were associated with differential biological processes, and contained proteins biologically relevant for male and female germ cell development respectively. This study presents first evidence on early predetermined sex specific cell fate of chicken PGCs that will help to understand their sexual physiological specificities and enable more precise sex-specific adaptation of in vitro culture conditions.

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