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RNA sequencing of splenic CD8+ T cells treated with AAV-IL-27/ctrl in vivo

ABSTRACT: RNA sequencing of splenic CD8+ T cells treated with AAV-IL-27/ctrl in vivo

PROVIDER: PRJNA802038 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17830195.fastq.gz	Fastqsanger.gz
	SRR17830196.fastq.gz	Fastqsanger.gz
	SRR17830197.fastq.gz	Fastqsanger.gz
	SRR17830198.fastq.gz	Fastqsanger.gz

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RNA sequencing of splenic CD8+ T cells treated with AAV-IL-27/ctrl in vivo

Project description:Splenic CD8+ T cells of C57BL/6 mice treated with AAV-IL-27/ctrl for a month were sepreated by MACS. Transcriptome profiling (RNA-seq) of these purified CD8+ T cells (>95%) was completed by BGI. Changing in gene express profiling resulted by IL-27 was analyzed in this study.

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Project description:Interleukin-27 (IL-27) is a pleiotropic cytokine that exhibits stimulatory/regulatory functions on multiple lineages of immune cells and has a potential to be used as a therapeutic for cancer. We have recently demonstrated that systemic delivery of IL-27 using adeno-associated virus (AAV-IL-27) exhibits potent inhibition of tumor growth in mouse models. In this work, we demonstrate that AAV-IL-27 treatment leads to significant expansion of CD11b+Gr1+ myeloid cells (MCs). AAV-IL-27-induced expansion of CD11b+Gr1+ cells is IL-27R-dependent, requires Stat3 signaling but is inhibited by Stat1 signaling. AAV-IL-27 treatment does not increase the self-renewal capacity of CD11b+Gr1+ cells but induces significant expansion of hematopoietic stem cells (HSCs) and granulocyte-monocyte progenitor (GMP) cells. IL-27-induced Ly6G+ MCs upregulate MHC class I/II molecules but are less immune suppressive in vitro, and their expansion does not promote, but rather inhibit tumor growth in vivo. In the tumor microenvironment, IL-27 gene therapy appears to promote Ly6G+ MCs to differentiate into MHC class I/IIhigh and F4/80high macrophages. Thus, IL-27 gene therapy induces expansion of CD11b+Gr1+ myeloid cells and promotes their differentiation into anti-tumor M1 macrophages in tumor microenvironment.Bone marrow myeloid cells of tumor-bearing C57BL/6 mice treated with AAV-IL-27/ctrl for 2 weeks were sepreated by MACS. Transcriptome profiling (RNA-seq) of these purified Ly6G+ cells (>95%) was completed by BGI. Changing in gene express profiling resulted by IL-27 was analyzed in this study.

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RNA sequencing of BM myeloid cells treated with AAV-IL-27/ctrl in vivo

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Project description:The pleiotropic cytokine IL-27 is essential for the clearance of the persistent LCMV strain Clone 13, however the cellular sources of IL-27 during viral infection are incompletely mapped and their relative importance unknown. Here we utilised single-cell RNA-sequencing of splenocytes from IL27-p28-GFP mice infected with Clone 13 to quantify the temporal patterns of IL-27 p28 production. IL-27-p28-GFP+ and IL-27-p28-GFP- splenocytes were sorted at 4 timepoints during Clone 13 infection and analysed by 3' single-cell transcriptome sequencing. Dendritic cells were major producers of early IL-27 with macrophages and monocytes being the predominant IL-27 producers during acute and persistent phases of infection. Interestingly, we also identified activated B cells and plasma cells as a prominent subset of IL-27-producing splenocytes and through B-cell-specific deletion of IL-27-p28 demonstrated that B-cell derived IL-27 is essential for sustained function of CD4 T cells and eventual clearance of Clone 13.

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