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Zhang Y, Gu M. Experimental Study on Antitumor Activity of Gold Nanoparticles-Assisted Delivery of PD-L1 SiRNA in Non-Small Cell Lung Cancer. J Biomed Nanotechnol 2022. [DOI: 10.1166/jbn.2022.3342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Objective: By delivering PD-L1 siRNA to A549 cells using nano-gold we tried to enhance the lymphocytes’ ability to inhibit the growth of non-small-cell lung cancer. Methods: In a one-step reaction, gold nanoparticles and PD-L1 siRNA were combined to form gold nanoparticles
and PD-L1 siRNA complexes. After incubation with A549 cells, PD-1 was detected by quantitative polymerase chain reaction (qPCR) as well as immunohistochemical staining. Mouse xenografts were used to test the anti-tumor activity. It was found that using a gold nanoparticle-siRNA complex, we
were able to successfully reduce the expression of PD-L1 in A549 cells. The nano-gold-siRNA complex outperformed free siRNA after co-incubation with tumor cells. In vivo experiments show that nano-gold-siRNA is more effective at targeting tumor tissue and increasing T cells’ ability
to inhibit the A549 tumor than free siRNA. For this study, we found that the delivery of siRNA to tumors using a nano-gold nanoparticle enhances the ability of the siRNA to aggregate in tumors, which in turn enhances the ability of T lymphocytes to combat non-small cell lung cancer by enhancing
their anti-tumor activity. This nano-gold-PD-L1-siRNA complex may be a promising treatment for non-small cell lung cancer, according to preliminary results.
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Affiliation(s)
- Yong Zhang
- Department of Cardiothoracic Surgery, Affiliated Hospital of Jiangnan University, Wuxi 214000, China
| | - Minwei Gu
- Department of Cardiothoracic Surgery, Affiliated Hospital of Jiangnan University, Wuxi 214000, China
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