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GD2-CART cells and iPSC-derived GD2-CART cells (scRNA-Seq)

ABSTRACT: GD2-CART cells and iPSC-derived GD2-CART cells (scRNA-Seq)

PROVIDER: PRJNA1030434 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26455579.fastq.gz	Fastqsanger.gz
	SRR26455580.fastq.gz	Fastqsanger.gz
	SRR26455581.fastq.gz	Fastqsanger.gz
	SRR26455582.fastq.gz	Fastqsanger.gz

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GD2-CART cells and iPSC-derived GD2-CART cells (scRNA-Seq)

Project description:We showed that iPSC-derived GD2-CART therapy for SCLC was more effective than peripheral blood-derived GD2-CART. Here, we investigated the molecular difference between iPSC-derived GD2-CARTs and peripheral blood-derived GD2-CARTs.

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Project description:Small cell lung cancer (SCLC) is exceptionally aggressive, with limited treatment options. Disialoganglioside (GD2) is highly expressed on SCLC and is considered a good target for chimeric antigen receptor (CAR) T cells (CART). Although GD2-directed CARTs (GD2-CART) exhibit cytotoxicity against various GD2-expressing tumors, they lack significant cytotoxicity against SCLC. To enhance cytotoxicity of GD2-CARTs against SCLC, we introduced GD2-CAR into induced pluripotent stem cells (iPSC)-derived rejuvenated cytotoxic T lymphocytes (GD2-CARrejT). GD2-CARrejTs acted much more strongly against SCLC cells than did GD2-CARTs both in vitro and in vivo. Single-cell RNA sequencing elucidated that levels of expression of TIGIT were significantly lower and levels of expression of genes associated with cytotoxicity were significantly higher in GD2-CARrejTs than those in GD2-CARTs. Dual blockade of TIGIT and programmed death-1 (PD-1) increased the cytotoxicity of GD2-CARTs to some extent, suggesting that low TIGIT and PD-1 expression by GD2-CARrejTs is a major factor required for robust cytotoxicity against SCLC. Not only for robust cytotoxicity but also for availability as "off-the-shelf" T-cell therapy, iPSC-derived GD2-CARrejTs are a promising novel treatment for SCLC.SignificanceThis research introduces iPSC-derived rejuvenated GD2-CARTs (GD2-CARrejT) as a novel approach to combat SCLC. Compared with conventional GD2-CARTs, GD2-CARrejTs with reduced TIGIT and PD-1 expression demonstrate robust cytotoxicity against SCLC and would be a promising therapy for SCLC.

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