Journal
NANOMEDICINE
Volume 16, Issue 10, Pages 839-856Publisher
FUTURE MEDICINE LTD
DOI: 10.2217/nnm-2020-0481
Keywords
gene delivery carrier; ING4; IL-24; matrix metalloproteinase; poly(ethylene glycol); silk fibroin
Funding
- National Key Research & Development Program of China [2017YFC113602]
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This study aimed to develop a gene carrier that can effectively deliver therapeutic genes to tumor cells. The PEG-MMP2SSP-modified CASF (CASFMP) showed promising results in inhibiting tumor cell proliferation with lower cytotoxicity to normal cells, making it a potential compound for gene therapy.
Aim: To obtain a gene carrier that can effectively deliver loaded therapeutic genes to tumor cells, avoid toxic effects on normal cells and reduce nonspecific adsorption of plasma proteins. Methods: The conjugate of poly(ethylene glycol) (PEG) and MMP2SSP (PEG-MMP2SSP) was covalently coupled to cationized Antheraea pernyi silk fibroin (CASF) through disulfide bond exchange reaction to obtain a PEG-MMP2SSP-modified CASF (CASFMP). Results: The PEG chains were effectively cleaved from the CASFMP by MMP2. CASFMP/pDNA complexes inhibited human fibrosarcoma cell proliferation, and its cytotoxicity to human normal embryonic kidney cells was significantly lower than that of poly(ethylenimine)/pDNA after coculturing with cells for 24 h. Conclusion: CASFMP is a promising compound for use in gene therapy.
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