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Wang Y, Wang H, Song Y, Lv M, Mao Y, Song H, Wang Y, Nie G, Liu X, Cui J, Zou X. IR792-MCN@ZIF-8-PD-L1 siRNA drug delivery system enhances photothermal immunotherapy for triple-negative breast cancer under near-infrared laser irradiation. J Nanobiotechnology 2022; 20:96. [PMID: 35236356 PMCID: PMC8889783 DOI: 10.1186/s12951-022-01255-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 01/09/2022] [Indexed: 11/24/2022] Open
Abstract
Background Despite extensive investigations on photothermal therapy, the clinical application is restricted due to poor stability, low therapeutic efficacy of photothermal therapy agents and its affinity loss in the multistep synthesis of delivery carriers. To address this, we designed an IR792-MCN@ZIF-8-PD-L1 siRNA (IM@ZP) nanoparticle drug delivery system. IM@ZP was prepared by in situ synthesis and physical adsorption, followed by characterization. Photothermal conversion ability of IM@ZP was assessed by irradiation of near-infrared (NIR) laser, followed by analysis of its effect on 4T1 cell viability, maturation of dendritic cells (DCs) and the secretion of related cytokines in vitro, and the changes of tumor infiltrating T cells and natural killer (NK) cells in vivo. Subcutaneous 4T1 tumor-bearing mouse and lung metastasis models were established to investigate the role of IM@ZP in killing tumor and inhibiting metastasis in vivo. Results IM@ZP was uniform nanoparticles of 81.67 nm with the characteristic UV absorption peak of IR792, and could effectively adsorb PD-L1 siRNA. Under the irradiation of 808 nm laser, IM@ZP exhibited excellent photothermal performance. IM@ZP could be efficiently uptaken by 4T1 cells, and had high transfection efficiency of PD-L1 siRNA. Upon NIR laser irradiation, IM@ZP effectively killed 4T1 cells, upregulated HSP70 expression, induced DC maturation and increased secretion of TNF-α and IL-6 in vitro. Moreover, in vivo experimental results revealed that IM@ZP enhanced photothermal immunotherapy as shown by promoted tumor infiltrating CD8 + and CD4 + T cells and NK cells, and inhibited tumor growth and lung metastasis. Conclusion Together, biocompatible IM@ZP nanoparticles result in high photothermal immunotherapy efficiency and may have a great potential as a delivery system for sustained cancer therapy. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01255-6.
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Affiliation(s)
- Yongmei Wang
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China.
| | - Haibo Wang
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Yuhua Song
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Meng Lv
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Yan Mao
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Hongming Song
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Yuanyuan Wang
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Gang Nie
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Xiaoyi Liu
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Jian Cui
- Breast Disease Center, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China
| | - Xueqing Zou
- Department of Anesthesiology, The Affiliated Hospital of Qingdao University, No. 59, Haier Road, Qingdao, 266071, Shandong, People's Republic of China.
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