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Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [RNA-Seq]

ABSTRACT: Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [RNA-Seq]

PROVIDER: PRJNA985654 | ENA |

REPOSITORIES: ENA

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Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [scRNA-Seq]

Project description:Adoptive T-cell therapy or oncolytic virotherapy has made significant progress, but the efficacy was limited by the lack of infiltration into solid tumors when used alone. Here, an oncolytic virus (rVSV-LCMVG) was designed and combined with adoptively transferred T cells. By turning cold tumors hot, in B16 tumor-bearing mice, combination therapy showed superior antitumor effects than monotherapy, whether rVSV-LCMVG was administered intratumorally or intravenously. Combination therapy significantly increased cytokine and chemokine levels within tumors and sensitized refractory tumors by boosting T-cell recruitment, down-regulating the expression of PD1, and restoring effector-T cell function. To offer a combination therapy with greater translational value, mRNA vaccines were introduced to induce tumor-specific T cells instead of adoptively transferred T cells, and exhibited comparable amplified anti-tumor effects. This study proposed a rational combination therapy of oncolytic virus with adoptive T-cell transfer or mRNA vaccines encoding tumor-associated antigens, in terms of synergistic efficacy and mechanism.

2024-03-15 | GSE235290 | GEO

Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [RNA-Seq]

2024-03-15 | GSE235289 | GEO

Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects

Project description:Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects

| PRJNA985647 | ENA

Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [scRNA-Seq]

Project description:Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects [scRNA-Seq]

| PRJNA985663 | ENA

TLR9-activated B cells imprint adoptively transferred CD8+ T cells with potent tumor immunity and persistence

Project description:Here we report a new way to reverse the tolerant state of adoptively transferred CD8+ T cells against melanoma through ex vivo expansion with the TLR9 agonist CpG. CpG-generated T cells elicited potent immunity without co-administration of high dose IL-2 or vaccination, which are adjuvants classically required to effectively treat solid tumors. CpG-expanded T cells exhibited an IL-2RhighICOShighCD39low phenotype ex vivo and engrafted robustly in vivo. In culture, B cells were the only cell type essential for imprinting T cells with this phenotype and potent tumor immunity. CpG agonists targeting B cells, but not dendritic cells, generated CD8+ T cell products with remarkable antitumor properties. Purified B cells were sufficient to mediate the CpG-associated changes in T cells. These findings reveal a vital role for B cells in the generation of effective antitumor T cells and have immediate implications for profoundly improving immunotherapy for patients.

2022-02-22 | PXD022909 | Pride

Oncolytic ORFV induces antitumor immunity

Project description:Oncolytic ORFV induces antitumor immunity

| PRJNA851624 | ENA

Combination therapy with oncolytic virus and adoptively transferred T cells or mRNA vaccine amplifies antitumor effects

Project description:This SuperSeries is composed of the SubSeries listed below.

2024-03-15 | GSE235291 | GEO

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.

2024-07-04 | GSE271202 | GEO

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

2024-06-28 | GSE271046 | GEO

Oncolytic ORFV induces antitumor immunity

Project description:To study the oncolytic effect of ORFV on tumors, we performed ORFV treatment (i.t.) in B16 engrafted tumors, changes of gene transcripts were detected

2022-12-09 | GSE206634 | GEO

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