LIU Ruxiong, YANG Wanzhen, TU Jie, SHENG Chunquan. Research progress on small-molecule inhibitors of ferroptosis regulatory protein GPX4[J]. Journal of Pharmaceutical Practice and Service, 2024, 42(9): 375-378. doi: 10.12206/j.issn.2097-2024.202312075
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YU Miao, MAO Junqin. Functional investigation of a new targeting gene delivery system of miRNA-34a nano-complexes into prostate cancer cell lines[J]. Journal of Pharmaceutical Practice and Service, 2015, 33(6): 539-543. doi: 10.3969/j.issn.1006-0111.2015.06.016
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Functional investigation of a new targeting gene delivery system of miRNA-34a nano-complexes into prostate cancer cell lines
- Received Date: 2014-12-16
- Rev Recd Date:
2015-04-23
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Abstract
Objective To construct a gene delivery carrier with aptamer-polyethylene glycol-dendrimer-polyamidoamine (APT-PEG-PAMAM), forming nanoparticles to specifically target prostate cancer cell lines, carrying prostate cancer cell proliferative suppressor microRNA: miRNA-34a. We investigated the transfection efficiency of this gene delivery system as well as functionally studied its inhibitory effect on prostate cancer (PCa) cell proliferation. Methods The construction of APT-PEG-PAMAM gene carrier was identified and confirmed by nuclear magnetic resonance (NMR). The nano-complex sizes and zeta potential of APT-PEG-PAMAM gene carrier complexes were measured by zeta sizer. The efficiency of gene transfection of APT-PEG-PAMAM / miRNA nano-complexes were investigated by measuring the expression miRNA-34a in prostate cancer cells (PC3 and LNCaP);the PCa specific cell proliferation inhibition of APT-PEG-PAMAM / miRNA-34a nano-complexes were investigated by measuring CCK-8 cell proliferation inhibition experiments by comparing with APT-PEG-PAMAM and APT-PEG-PAMAM / miRNA-34a nano-complexes. Results NMR Results demonstrated that APT-PEG-PAMAM / miRNA-34a nano-complexes were successfully synthesized by structural identification. Qualitative and quantitative transfection efficiency experiments data show that the cellular uptake of vectors were concentration-dependent, after the APT further modified it significantly and increased the LNCaP cell transfection efficiency and specificity of PCa cells targeting ability. CCK8 cell proliferation assay data indicated that APT-PEG-PAMAM/miRNA-34a has the anti-PCa cells effect. Conclusion APT-PEG-PAMAM/miRNA-34a may prove to see its efficacy for near future in pre-clinical and clinical study on the treatment of PCa.
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