Genome-Editing-Mediated Restructuring of Tumor Immune Microenvironment for Prevention of Metastasis
- Authors
- Kim, Dongyoon; Wu, Yina; Shim, Gayong; Oh, Yu-Kyoung
- Issue Date
- 23-Nov-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- tumor immune microenvironment; metal-lipid hybrid nanoparticle; gene editing; transforming growth factor-beta; metastasis
- Citation
- ACS NANO, v.15, no.11, pp.17635 - 17656
- Journal Title
- ACS NANO
- Volume
- 15
- Number
- 11
- Start Page
- 17635
- End Page
- 17656
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/41969
- DOI
- 10.1021/acsnano.1c05420
- ISSN
- 1936-0851
- Abstract
- Modulating the tumor immune microenvironment to activate immune cells has been investigated to convert cold to hot tumors. Here, we report that metal-lipid hybrid nanoparticle (MLN)-mediated gene editing of transforming growth factor-beta (TGF-beta) can restructure the tumor microenvironment to an "immune activated" state for subsequent immunotherapy. MLNs with cationic lipids and elemental metallic Au inside were designed to deliver plasmid DNA encoding TGF-beta single guide RNA and Cas9 protein (pC9sTgf) and to convert near-infrared light (NIR) to heat. Upon NIR irradiation, MLNs induced photothermal anticancer effects and calreticulin exposure on B16F10 cancer cells. Lipoplexes of pC9sTgf and MLN (pC9sTgf@MLN) provided gene editing of B16F10 cells and in vivo tumor tissues. In mice treated with pC9sTgf@MLNs and NIR irradiation, the tumor microenvironment showed increases in mature dendritic cells, cytotoxic T cells, and interferon-gamma expression. In B16F10 tumor-bearing mice, intratumoral injection of pC9sTgf@MLNs and NIR irradiation resulted in ablation of primary tumors. Application of pC9sTgf@MLNs and NIR irradiation prevented the growth of secondarily challenged B16F10 cells at distant sites and B16F10 lung metastasis. Combined TGF-ss gene editing and phototherapy is herein supported as a modality for restructuring the tumor immune microenvironment and preventing tumor recurrence.
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