Intratumourally injected alum-tethered cytokines elicit potent and safer local and systemic anticancer immunity.

Intratumourally injected alum-tethered cytokines elicit potent and safer local and systemic anticancer immunity.
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DOI:
10.1038/s41551-021-00831-9
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发表时间:
2022-02
影响因子:
28.1
通讯作者:
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中科院分区:
工程技术1区
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Antitumour inflammatory cytokines are highly toxic when systemically administered. Here, in multiple syngeneic mouse models, we show that the intratumoural injection of recombinantly expressed cytokines bound tightly to the common vaccine adjuvant aluminium hydroxide (alum) (via ligand exchange between hydroxyls on the surface of alum and phosphoserine residues tagged to the cytokine by an alum-binding peptide) leads to weeks-long retention of the cytokines in the tumours, with minimal side effects. Specifically, a single dose of alum-tethered interleukin-12 induced significant interferon-γ-mediated T-cell and natural-killer-cell activities in murine melanoma tumours, increased tumour-antigen accumulation in draining lymph nodes, and elicited robust tumour-specific T-cell priming. Moreover, intratumoural injection of alum-anchored cytokines enhanced responses to checkpoint blockade, promoting cures in distinct poorly immunogenic syngeneic tumour models and eliciting control over metastases and distant untreated lesions. Intratumoural treatment with alum-anchored cytokines represents a safer and tumour-agnostic strategy to improving local and systemic anticancer immunity.
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