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Myeloid cell-based delivery of IFN-γ reprograms leukemia microenvironment and induces anti-tumoral immune responses

ABSTRACT: Myeloid cell-based delivery of IFN-γ reprograms leukemia microenvironment and induces anti-tumoral immune responses

PROVIDER: PRJNA741522 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14916477_1.fastq.gz	Fastqsanger.gz
	SRR14916477_2.fastq.gz	Fastqsanger.gz
	SRR14916478_1.fastq.gz	Fastqsanger.gz
	SRR14916478_2.fastq.gz	Fastqsanger.gz
	SRR14916479_1.fastq.gz	Fastqsanger.gz

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Myeloid cell-based delivery of IFN-γ reprograms leukemia microenvironment and induces anti-tumoral immune responses

Project description:The immunosuppressive microenvironment surrounding tumor cells represents a key cause of treatment failure. Therefore, immunotherapies aimed at reprogramming the immune system have largely spread in the past years. We employed gene transfer into hematopoietic stem and progenitor cells to selectively express anti-tumoral cytokines in tumor-infiltrating monocytes/macrophages. We show that Interferon-γ (IFNγ) reduced tumor progression in mouse models of B-cell acute lymphoblastic leukemia (B-ALL) and colorectal carcinoma (MC38). Its activity was dependent on the capacity of the immune system to respond to IFNγ and drove counter-selection of leukemia cells expressing surrogate antigens. Gene-based IFNγ delivery induced antigen presentation in the myeloid compartment and on leukemia cells, leading to a wave of T cell recruitment and activation, with enhanced clonal expansion of cytotoxic CD8+ T lymphocytes. The activity of IFNγ was further enhanced by either co-delivery of tumor necrosis factor α (TNFα) or by drugs blocking immunosuppressive escape pathways, with the potential to obtain durable responses.

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Myeloid cell-based delivery of IFN-γ reprograms the leukemia microenvironment and induces anti-tumoral immune responses.

Project description:The immunosuppressive microenvironment surrounding tumor cells represents a key cause of treatment failure. Therefore, immunotherapies aimed at reprogramming the immune system have largely spread in the past years. We employed gene transfer into hematopoietic stem and progenitor cells to selectively express anti-tumoral cytokines in tumor-infiltrating monocytes/macrophages. We show that interferon-γ (IFN-γ) reduced tumor progression in mouse models of B-cell acute lymphoblastic leukemia (B-ALL) and colorectal carcinoma (MC38). Its activity depended on the immune system's capacity to respond to IFN-γ and drove the counter-selection of leukemia cells expressing surrogate antigens. Gene-based IFN-γ delivery induced antigen presentation in the myeloid compartment and on leukemia cells, leading to a wave of T cell recruitment and activation, with enhanced clonal expansion of cytotoxic CD8+ T lymphocytes. The activity of IFN-γ was further enhanced by either co-delivery of tumor necrosis factor-α (TNF-α) or by drugs blocking immunosuppressive escape pathways, with the potential to obtain durable responses.

| S-EPMC8495462 | biostudies-literature

human ESC-MSCs: IFN-γ-nontreated, IFN-γ-treated for 1 day, IFN-γ-treated for 3 days

Project description:human ESC-MSCs: IFN-γ-nontreated, IFN-γ-treated for 1 day, IFN-γ-treated for 3 days

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IFN-gamma priming

Project description:IFN-gamma transcriptional responses in control and IFN-gamma primed primary human macrophages Keywords: repeat sample

2004-11-05 | GSE1925 | GEO

Transcription profiling of IFN-gamma transcriptional responses in control and IFN-gamma primed primary human macrophages

Project description:IFN-gamma transcriptional responses in control and IFN-gamma primed primary human macrophages

2007-09-01 | E-GEOD-1925 | biostudies-arrayexpress

The effects of terbutaline or GW9508 on TNF-alpha and IFN gamma (TNF-alpha + IFN gamma) stimulation by HaCaT

Project description:G-protein coupled receptors (GPCRs) have diverse roles in physiological processes, including immunity. Gs-coupled GPCRs increase while Gi-coupled ones decrease intracellular cAMP. Previous studies suggest that, in epithelial cells, Gs-coupled GPCRs enhance whereas Gi-coupled GPCRs suppress pro-inflammatory immune responses. In order to examine the issue, we chose beta2 adrenergic receptor and GPR40 as representatives of Gs- and Gi- coupled GPCRs, respectively, and examined their effects on TNF-alpha and IFN-gamma-(TNF-alpha + IFN-gamma) induced gene expression by HaCaT. We used microarrays to detail the global changes of gene expression induced by a beta2 adrenergic receptor agonist terbutaline or GPR40 agonist GW9508 pre-treatment in TNF-alpha + IFN-gamma - stimulated HaCaT cells. HaCaT cells were pre-treated with terbutaline or GW9508, TNF-alpha + IFN-gamma were then added, and cultured for another 24 h. Cells were then used for RNA extraction and hybridization on Affymetrix microarrays. We sought to clarify changes in gene expression after 1) TNF-alpha + IFN-gamma, 2) TNF-alpha + IFN-gamma + terbutaline, and 3) TNF-alpha + IFN-gamma + GW9508 treatment. To this end, we set 4 groups of samples; 1) unstimulated group, 2) TNF-alpha + IFN-gamma-stimulated group, 3) TNF-alpha + IFN-gamma + terbutaline-stimulated group, and 4) TNF-alpha + IFN-gamma + GW9508-stimulated group. In each group, HaCaT cells were stimulated in triplicate wells (n=3).

2010-12-01 | E-GEOD-20297 | biostudies-arrayexpress

IFN gamma induced changes in MSC secretome

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HT-29 cells treated with IFN-γ

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2013-08-06 | E-GEOD-38516 | biostudies-arrayexpress

Role for ISGF3II in the Antiviral Activity of IFN-gamma

Project description:Type-I (e.g. IFN-alpha, IFN-beta) and type-II IFNs (IFN-gamma) have antiviral, antiproliferative, and immunomodulatory properties. Both types of IFN signal through the Jak/STAT pathway to elicit antiviral activity, yet IFN-gamma is thought to do so only through STAT1 homodimers while type-I IFNs activate both STAT1- and STAT2-containing complexes such as ISGF3. Here we show that ISGF3II - composed of phosphorylated STAT1, unphosphorylated STAT2, and IRF9 - also plays a role in IFN-gamma-mediated antiviral activity in humans. Using phosphorylated STAT1 as a marker for IFN signaling, western blot analysis of IFN-alpha2a treated human A549 cells revealed that pSTAT1 (Y701) levels peaked at 1h, decreased by 6h, and remained at low levels for up to 48h. Cells treated with IFN-gamma showed a biphasic pSTAT1 response with an early peak at 1-2h and a second peak at 15-24h. Gene expression microarray following IFN-gamma treatment for 24h indicated an induction of antiviral genes that are induced by ISGF3 and associated with a type-1 IFN response. Induction of these genes by autocrine type-I and type-III IFN signaling was ruled out using neutralizing antibodies to these IFNs in biological assays and by qRT-PCR. Despite the absence of autocrine IFNs, IFN-gamma treatment induced formation of ISGF3II. This novel transcription factor complex binds to ISRE promoter sequences, as shown by ChIP analysis of the PKR promoter. STAT2 and IRF9 knockdown in A549 cells reversed IFN-gamma-mediated ISRE induction and antiviral activity - implicating ISGF3II formation as a significant component of the cellular response and biological activity of IFN-gamma. Two treatments using three biological replicates each were performed using three million A549 cells. Each was seeded overnight in 10mL complete RPMI and treated. Three were treated with alpha-IFN and three treated with gamma-IFN for 24h. Control samples were left untreated.

2011-01-19 | E-GEOD-25113 | biostudies-arrayexpress

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