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RNAseq of tumor samples from CT26 syngeneic mouse treated with a PD-L1 and CTLA-4 immunotherapy combination

ABSTRACT: RNAseq of tumor samples from CT26 syngeneic mouse treated with a PD-L1 and CTLA-4 immunotherapy combination

PROVIDER: PRJEB31682 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR3219290.fastq.gz	Fastqsanger.gz
	ERR3219300.fastq.gz	Fastqsanger.gz
	ERR3219281.fastq.gz	Fastqsanger.gz
	ERR3219291.fastq.gz	Fastqsanger.gz
	ERR3219282.fastq.gz	Fastqsanger.gz

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RNAseq of tumor samples from CT26 syngeneic mouse treated with a PD-L1 and CTLA-4 immunotherapy combination

Project description:The ability to modulate immune-inhibitory pathways using checkpoint blockade antibodies such as PD-1, PD-L1, and CTLA-4 represents a significant breakthrough in cancer therapy in recent years. This has driven interest in identifying small-molecule-immunotherapy combinations to increase the proportion of responses. Murine syngeneic models, which have a functional immune system, represent an essential tool for pre-clinical evaluation of new immunotherapies. However, immune response varies widely between models and the translational relevance of each model is not fully understood, making selection of an appropriate pre-clinical model for drug target validation challenging. Utilizing RNAseq transcriptomic profiling, we have characterised the changes in gene regulatory pathways and immune populations in CT26 mice after treatment with the combination of anti-PD-L1 and anti-CTLA-4 antibodies. At day 7 post tumor implant, the pathways analysis of differentially expressed genes indicated an enrichment for migration of leukocytes in response to inflammation and communication between innate and adaptive immune cells. Similarly, analysis of upstream regulators suggested that lipopolysaccharide, IL-1B, TNF, IFNG, and NFKB1A pathways associated with inflammation were activated. At day 14, pathways related T-helper cell signalling pathways were upregulated. In addition, upstream regulators of the lipopolysaccharide and IFNG pathway, as well STAT1 and IL21 pathway were enriched, indicative of innate and adaptive immune response to inflammation.

2020-04-16 | E-MTAB-7777 | biostudies-arrayexpress

RNA sequencing of mouse CT26 knockout Pd-l1 cells rescued with WT or K262Q Pd-l1

Project description:Although membrane-anchored Pd-l1 has been well-studied for its engagement with PD-1 on T cells to evade anti-tumor immunity, whether Pd-l1 regulate oncogenic signaling pathways in tumor cells remains elusive. In this experiment, to further dissect roles of the K262 residue acetylation for Pd-l1 nuclear function, we profiled RNA expression of WT or K262Q mutant mouse Pd-l1 re-expressed in CT26 KO Pd-l1 cells. Methods: Total RNA fromCT26/Vector, CT26/WT or CT26 Pd-l1 KO cells was purified using Qiagen RNeasy mini kit (Qiagen) according to the manufacturer’s instructions. Library preparation and sequenceing analysis were performed by BGI-Hong Kong Co. Ltd. Conclusions: Our study indicates that Pd-l1 acetylation modification may affect its function in nuclear.

2020-06-07 | GSE146557 | GEO

RNA sequencing of PD-L1 knock out human MDA-MB231 cells and mouse CT26 cells

Project description:Although membrane-anchored PD-L1 has been well-studied for its engagement with PD-1 on T cells to evade anti-tumor immunity, whether PD-L1 regulate oncogenic signaling pathways in tumor cells remains elusive. Methods: Total RNA from MDA-MB-231 wild type (WT) , MDA-MB-231 PD-L1 knock-out (KO), CT26 WT or CT26 Pd-l1 KO cells was purified using Qiagen RNeasy mini kit (Qiagen) according to the manufacturer’s instructions. Library preparation and sequenceing analysis were performed at the Molecular Genetics Core facility in Dana-Farber Cancer institute. RNA-seq data was aligned using STAR v2.5.4a. Conclusions: Our study indicates that PD-L1 may regulate genes that are involved in immune response regulating pathways.

2020-06-07 | GSE134510 | GEO

Enhanced CTLA-4 blockade anti-tumor immunity with APG-157 combination in a murine head and neck cancer

Project description:We evaluated APG-157 and immune checkpoint inhibitors combination treatment using syngeneic mouse head and neck cancer cell line model, SCCVII. The study demonstrated best tumor control with APG-157+ anti-CTLA-4 antibody combination treatment and RNA-seq of the tumor revealed up-regulation of various genes related to T cell activity and down-regulation of various genes related to poor prognosis of head & neck cancer.

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The cecal contents of CT26 syngeneic mouse model

Project description:The cecal contents of CT26 syngeneic mouse model Raw sequence reads

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the cecal contents of CT26 syngeneic mouse model

Project description:the cecal contents of CT26 syngeneic mouse model Raw sequence reads

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E-MTAB-7777

Project description:RNAseq of tumor samples from CT26 syngeneic mouse treated with a PD-L1 and CTLA-4 immunotherapy combination

2019-09-04 | E-MTAB-7777 | ExpressionAtlas

the cecal contents of CT26 syngeneic mouse model

Project description:the cecal contents of CT26 syngeneic mouse model Raw sequence reads part2

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Gene Expression Profiling of human monocytes: Combination Therapy with AntiâCTLA-4 and AntiâPD-1 Leads to Distinct Immunologic Changes In Vivo

Project description:Transcriptome analysis of human peripheral blood monocytes Combination therapy concurrently targeting PD-1 and CTLA-4 immune checkpoints leads to remarkable antitumor effects. Although both PD-1 and CTLA-4 dampen the T cell activation, the in vivo effects of these drugs in humans remain to be clearly defined. To better understand biologic effects of therapy, we analyzed blood/tumor tissue from patients undergoing single or combination immune checkpoint blockade. We show that blockade of CTLA-4, PD-1, or combination of the two leads to distinct genomic (changes in gene-expression profile) and functional signatures in vivo in purified human T cells and monocytes. RNA extracted from freshly isolated monocytes from peripheral blood of patients treated with either antiâPD-1 (n = 6), antiâCTLA-4 (n = 5), Combo therapy with antiâPD-1 and antiâCTLA-4 concurrently (Combo, n = 6), and Seq antiâPD-1 in patients with prior antiâCTLA-4 (Seq, n = 3) was analyzed using the Affymetrix GeneChip Human Transcriptome 2.0 exon array. No techinical replicates were performed.

2016-02-16 | E-GEOD-77924 | biostudies-arrayexpress

Gene Expression Profiling of human T cells: Combination Therapy with Antiâ??CTLA-4 and Antiâ??PD-1 Leads to Distinct Immunologic Changes In Vivo

Project description:Transcriptome analysis of human peripheral blood T cells Combination therapy concurrently targeting PD-1 and CTLA-4 immune checkpoints leads to remarkable antitumor effects. Although both PD-1 and CTLA-4 dampen the T cell activation, the in vivo effects of these drugs in humans remain to be clearly defined. To better understand biologic effects of therapy, we analyzed blood/tumor tissue from patients undergoing single or combination immune checkpoint blockade. We show that blockade of CTLA-4, PD-1, or combination of the two leads to distinct genomic (changes in gene-expression profile) andfunctional signatures in vivo in purified human T cells. RNA extracted from freshly isolated T cells from peripheral blood of patients treated with either antiâ??PD-1 (n = 6), antiâ??CTLA-4 (n = 5), Combo therapy with antiâ??PD-1 and antiâ??CTLA-4 concurrently (Combo, n = 6), and Seq antiâ??PD-1 in patients with prior antiâ??CTLA-4 (Seq, n = 3) was analyzed using the Affymetrix GeneChip Human Transcriptome 2.0 exon array. No techinical replicates were performed.

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