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Wang L, Wang L, Xu P, Liu C, Wang S, Luo X, Li M, Liu J, Zhao Z, Lai W, Luo F, Yan J. pH-Responsive Liposomes Loaded with Targeting Procoagulant Proteins as Potential Embolic Agents for Solid Tumor-Targeted Therapy. Mol Pharm 2022; 19:1356-1367. [PMID: 35420039 DOI: 10.1021/acs.molpharmaceut.1c00912] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Selectively inducing tumor thrombosis and subsequent necrosis is a novel and promising antitumor strategy. We have previously designed a targeting procoagulant protein, called tTF-EG3287, which is a fusion of a truncated tissue factor (tTF) with EG3287, a short peptide against the neuropilin-1 (NRP1) binding site of vascular endothelial growth factor-A 165 (VEGF-A 165). However, off-target effects and high-dose requirements limit the further use of tTF-EG3287 in antitumor therapy. Therefore, we encapsulated tTF-EG3287 into poly(2-ethyl-2-oxazoline)-distearoyl phosphatidyl ethanolamine (PEOz-DSPE)-modified liposomes to construct pH-responsive liposomes as a novel vascular embolization agent, called tTF-EG3287@Liposomes. The liposomes had an average particle size of about 100 nm and showed considerable drug-loading capacity, encapsulation efficiency, and biocompatibility. Under the stimulation of acidic microenvironments (pH 6.5), the lipid membrane of tTF-EG3287@Liposomes collapsed, and the cumulative drug release rate within 72 h was 83 ± 1.26%. When administered to a mouse model of hepatocellular carcinoma (HCC), tTF-EG3287@Liposomes showed prolonged retention and enhanced accumulation in the tumor as well as a superior antitumor effec, compared with tTF-EG3287. This study demonstrates the potential of tTF-EG3287@Liposomes as a novel embolic agent for solid tumors and provides a new strategy for tumor-targeted infarction therapy.
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Affiliation(s)
- Li Wang
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Lanlan Wang
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Peilan Xu
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Cong Liu
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Shengyu Wang
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Xian Luo
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Mengqi Li
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Jiajing Liu
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Zhiyu Zhao
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Weisong Lai
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Fanghong Luo
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
| | - Jianghua Yan
- Cancer Research Center, Medical College, Xiamen University, Xiamen 361102, China
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