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The transcription factor PBX1 drives natural killer cells to promote fetal development

ABSTRACT: The transcription factor PBX1 drives natural killer cells to promote fetal development

PROVIDER: PRJNA433246 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6678790_1.fastq.gz	Fastqsanger.gz
	SRR6678790_2.fastq.gz	Fastqsanger.gz
	SRR6678788_1.fastq.gz	Fastqsanger.gz
	SRR6678788_2.fastq.gz	Fastqsanger.gz
	SRR6678789_1.fastq.gz	Fastqsanger.gz

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The transcription factor PBX1 drives natural killer cells to promote fetal development

Project description:Perfect fetal development is a solid foundation for successful fertility, in which the abundant natural killer (NK) cells in the decidua tissue at the maternal-fetal interface play an important role during the first trimester. The functional subsets and transcriptional regulation mechanisms of decidual NK (dNK) cells remain poorly understood. Here, we identified CD49a+PBX1+ dNK cells as a unique subset of NK cells that promote fetal development in both human and mice. PBX1 drove the transcription of key functional molecules pleiotrophin and osteoglycin that promote fetal development through direct promoter binding. In patients with unexplained recurrent spontaneous abortion (URSA), decreased expression of PBX1 and PBX1(G21S) mutation correlated with fetal growth restriction and pregnancy failure. Inactivation of Pbx1 in mouse NK cells caused impaired fetal development due to a decrease in growth promoting factors. Our observations reveal the molecular regulation mechanism of CD49a+PBX1+ dNK cells promoting fetal development, and indicate that impaired PBX1 in dNK cells may serve as pathogenesis and biomarker of URSA.

2021-01-01 | GSE110244 | GEO

Transcription profiling of neonatal and adult mouse natural killer cells

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Natural killer cells promote fetal development through the secretion of growth-promoting factors

Project description:Natural killer (NK) cells are present in large populations at the maternal-fetal interface during early pregnancy, but their roles in fetal growth are unclear. Here, we identify a CD49a+Eomes+ subset of NK cells that have the capability to secrete growth-promoting-factors (GPF), including pleiotrophin, osteoglycin and osteopontin in both humans and mice. Decreases in this GPF-secreting NK subset impair fetal development, and leads to fetal growth restriction. The transcriptional factor Nfil3 but not T-bet affects the function and the number of this decidual NK subset. The crosstalk of the HLA-G-ILT2-KIR2DL4 axis promotes the GPF-secreting function of this NK subset. Adoptive transfer of these induced CD49a+Eomes+NK cells can reverse the impaired fetal growth and rebuild an appropriate local microenvironment. These findings reveal new properties of NK cells in promoting fetal growth as well as novel approaches for therapeutically administering NK cells to reverse restricted nourishments within the microenvironment during early pregnancy. To investigate novel molecular signatures of human decidual NK cells, we performed microarray analysis on dNK cells (CD3−CD56+CD49a+CD49b−) and pNK cells (CD3−CD56+CD49a−CD49b+). dNK cells were purified from first-trimester deciduas. pNK cells were purified from adult peripheral blood mononuclear cells. Samples were collected from healthy adult donors after obtaining informed consent according to the Ethics Committee of the University of Science & Technology of China.

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