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Ex Vivo Expansion and Hydrogel-Mediated In Vivo Delivery of Tissue Resident Memory T Cells for Immunotherapy

ABSTRACT: Ex Vivo Expansion and Hydrogel-Mediated In Vivo Delivery of Tissue Resident Memory T Cells for Immunotherapy

PROVIDER: PRJNA1113317 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29078843_1.fastq.gz	Fastqsanger.gz
	SRR29078843_2.fastq.gz	Fastqsanger.gz
	SRR29078844_1.fastq.gz	Fastqsanger.gz
	SRR29078844_2.fastq.gz	Fastqsanger.gz
	SRR29078845_1.fastq.gz	Fastqsanger.gz

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Ex Vivo Expansion and Hydrogel-Mediated In Vivo Delivery of Tissue Resident Memory T Cells for Immunotherapy

Project description:Tissue-resident memory (TRM) T cells preferentially reside in peripheral tissues, serving as key players in tumor immunity and immunotherapy. Currently, the lack of effective approaches for expanding TRM cells and delivering these cells in vivo hinder the exploration of TRM cell-mediated cancer immunotherapy. Here, we report a nanoparticle artificial antigen-presenting cell (nano-aAPC) ex vivo expansion approach and an in vivo delivery system for TRM cells. Using the nano-aAPC platform, we expanded functional antigen-specific murine and human TRM-like CD8+ T cells ex vivo. We also developed an injectable macroporous hyaluronic acid (HA) hydrogel for delivery of TRM-like cells. TRM-like cells delivered in the optimized HA hydrogel trigger robust local and systemic antitumor immunity and show synergistic effect with anti-PD1 treatment. Our findings suggest that nano-aAPC-induced TRM-like cells, coupled with a hydrogel delivery system, offer an efficient way to advance the understanding of TRM cells-mediated cancer therapy.

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Hydrogel-based intramyocardial delivery of antimiR-195

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Hydrogel-based intramyocardial delivery of antimiR-195 after ischemia-reperfusion injury [UPyPEG_IR]

Project description:Background MicroRNAs are potent regulators of biology and disease. The miR-15 family has been shown to regulate cardiomyocyte proliferation and antimiR-based inhibition induces a cardioprotective effect after myocardial infarction in mice. However, systemic delivery of antimiRs leads to accumulation in kidneys and liver, with relatively poor cardiac exposure. pH-responsive injectable hydrogels serve as a sustained-release drug delivery depot and could potentially be used to improve cardiac efficacy of antimiR therapeutics. Objective Examine whether hydrogel can improve local delivery of antimiR-195 in ischemic hearts to increase cardiac efficacy and limit off-target effects. Methods Study the effect of intramyocardial injections of hydrogel-formulated antimiR-195 under both baseline conditions and after ischemic injury. Results Intracardiac injections of UPy-PEG induced a transient inflammatory response that was no longer present 7 days post-injection. In vitro experiments showed that antimiR-195 was released from the gel, and induced microRNA inhibition leading to downstream cardiomyocyte proliferation. In vivo, intramyocardial delivery of antimiR-195 in UPy-PEG enhanced cardiac target de-repression compared to PBS-dissolved antimiR-195, despite a low cardiac retention. After ischemic injury, this translated into a greater therapeutic effect by increasing both target de-repression and cardiomyocyte proliferation. Conclusions UPy-PEG can be used as a cardiac delivery vehicle of antimiRs and intramyocardial injection of UPy-PEG formulated antimiR-195 is sufficient to improve cardiac efficacy of antimiR-195. Follow up experiments in large animals will enable us to assess the true added value of using UPy-PEG to increase cardiac exposure of antimiR therapies.

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Effect of Upy-PEG hydrogel injection and delivery of antimiR-195 on left ventricular transcriptome [baseline]

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AM in vivo and ex vivo RNAseq

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