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Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

ABSTRACT: Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

PROVIDER: PRJNA1129487 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR29639600_1.fastq.gz	Fastqsanger.gz
	SRR29639600_2.fastq.gz	Fastqsanger.gz
	SRR29639601_1.fastq.gz	Fastqsanger.gz
	SRR29639601_2.fastq.gz	Fastqsanger.gz
	SRR29639593_1.fastq.gz	Fastqsanger.gz

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Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

Project description:Although oncolytic adenoviruses have been widely studied for their direct oncolytic activity and immunomodulatory role in cancer immunotherapy, the immunosuppressive feedback loop induced by oncolytic adenoviruses remains poorly studied. Here, we showed that type V adenovirus (ADV) induces the polarization of tumor-associated macrophages (TAMs) to the M2 phenotype and increases the infiltration of regulatory T cells (Tregs) in the tumor microenvironment (TME). By selectively compensating for these deficiencies, Tα1 reprogrammed “M2-like” TAMs toward an antitumoral phenotype, thereby reprogramming the TME into a state more beneficial for antitumor immunity. Moreover, ADVTα1 was constructed by harnessing the merits of all the components for the aforementioned combinatorial therapy. Both in vitro and in vivo data showed that both exogenously supplied and adenovirus-produced Tα1 orchestrate TAM reprogramming and enhance the antitumor efficacy of ADV via CD8+ T cells, showing promising prospects for clinical translation. Our findings provide inspiration for improving oncolytic adenovirus combination therapy and designing new oncolytic engineered adenoviruses.

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Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

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Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

Project description:Thymosin α1 reverses oncolytic adenovirus-induced M2 polarization of macrophages to improve antitumor immunity and therapeutic efficacy

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