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ITPK1 sensitizes tumor cells to IgA-dependent neutrophil killing in vivo [CRISPR Epistasis]

ABSTRACT: ITPK1 sensitizes tumor cells to IgA-dependent neutrophil killing in vivo [CRISPR Epistasis]

PROVIDER: PRJNA1142467 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR30051528.fastq.gz	Fastqsanger.gz
	SRR30051529.fastq.gz	Fastqsanger.gz
	SRR30051530.fastq.gz	Fastqsanger.gz
	SRR30051531.fastq.gz	Fastqsanger.gz
	SRR30051532.fastq.gz	Fastqsanger.gz

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ITPK1 sensitizes tumor cells to IgA-dependent neutrophil killing in vivo [CRISPR Epistasis]

Project description:Neutrophils can efficiently trigger cytotoxicity towards tumor cells and other target cells upon engagement of the IgA receptor CD89. However, the cell-intrinsic factors that influence the induction of cell death upon exposure to neutrophil effector mechanisms in vivo remain largely unknown. To uncover genetic regulators that influence target cell sensitivity to IgA-induced neutrophil-mediated killing, we used a human CD89 (hCD89) transgenic mouse model in which IgA-mediated killing of Her2-positive CD47-deficient murine target cells is mediated by neutrophils. Using a genome-wide in vivo screening approach, we demonstrate that deletion of the gene encoding inositol-tetrakisphosphate 1 kinase, ITPK1, increases survival of target cells in anti-Her2 IgA-treated mice. Moreover, we show that this effect depends on neutrophil activity and on the ITPK1 kinase domain. Notably, ITPK1 deficiency did not measurably impact survival of IgA-opsonized target cells in in vitro systems, underscoring the importance of in vivo screening systems to uncover physiologically relevant regulators of neutrophil killing.

2024-10-09 | GSE273585 | GEO

ITPK1 sensitizes tumor cells to IgA-dependent neutrophil killing in vivo [CRISPR focused]

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