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Yang Y, Bo S, Liang L, Deng K, Bai L, Wang T, Wang Y, Liu K, Lu C. Delivery of Interferon β-Encoding Plasmid via Lipid Nanoparticle Restores Interferon β Expression to Enhance Antitumor Immunity in Colon Cancer. ACS NANO 2024. [PMID: 38319978 DOI: 10.1021/acsnano.3c10972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Type I interferon (IFN-I) plays a critical role in host cancer immunosurveillance, but its expression is often impaired in the tumor microenvironment. We aimed at testing the hypothesis that cationic lipid nanoparticle delivery of interferon β (IFNβ)-encoding plasmid to tumors is effective in restoring IFNβ expression to suppress tumor immune evasion. We determined that IFN-I function in tumor suppression depends on the host immune cells. IFN-I activates the expression of Cxcl9 and Cxcl10 to enhance T cell tumor infiltration. RNA-Seq detected a low level of IFNα13 and IFNβ in colon tumor tissue. scRNA-Seq revealed that IFNβ is expressed in immune cell subsets in non-neoplastic human tissues and to a lesser degree in human colon tumor tissues. Forced expression of IFNα13 and IFNβ in colon tumor cells up-regulates major histocompatibility complex I (MHC I) expression and suppresses colon tumor growth in vivo. In human cancer patients, IFNβ expression is positively correlated with human leukocyte antigen (HLA) expression, and IFN-I signaling activation correlates with the patient response to PD-1 blockade immunotherapy. To translate this finding to colon cancer immunotherapy, we formulated a 1,2-dioleoyl-3-trimethylammonium propane (DOTAP)-cholesterol-encapsulated IFNβ-encoding plasmid (IFNBCOL01). IFNBCOL01 transfects colon tumor cells to express IFNβ to increase the level of MHC I expression. IFNBCOL01 therapy transfects tumor cells and tumor-infiltrating immune cells to produce IFNβ to activate MHC I and granzyme B expression and inhibits colon tumor growth in mice. Our data determine that lipid nanoparticle delivery of IFNβ-encoding plasmid DNA enhances tumor immunogenicity and T cell effector function to suppress colon tumor growth in vivo.
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Affiliation(s)
- Yingcui Yang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Shixuan Bo
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Liyan Liang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Kaidi Deng
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Liya Bai
- School of Pharmacy, Tianjin Medical University, Tianjin 300070, China
| | - Tao Wang
- School of Life Sciences, Tianjin University, Tianjin 300072, China
| | - Yinsong Wang
- School of Pharmacy, Tianjin Medical University, Tianjin 300070, China
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, Georgia 30912, United States
- Georgia Cancer Center, Augusta, Georgia 30912, United States
| | - Chunwan Lu
- School of Life Sciences, Tianjin University, Tianjin 300072, China
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