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Tian X, Ruan L, Zhou S, Wu L, Cao J, Qi X, Zhang X, Shen S. Appropriate Size of Fe 3O 4 Nanoparticles for Cancer Therapy by Ferroptosis. ACS APPLIED BIO MATERIALS 2022; 5:1692-1699. [PMID: 35297253 DOI: 10.1021/acsabm.2c00068] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Iron oxide nanoparticles can induce cell death due to the ferroptosis mechanism, showing a great potential for cancer therapy. Here, we synthesized different-sized iron oxide nanoparticles (2-100 nm) to investigate their antitumor effect and toxicity mechanism. It was found that ultrasmall nanoparticles (< ∼5 nm) could accumulate in nucleus and were more efficient in triggering the generation of •OH than larger nanoparticles due to the quicker release of Fe2+, thus exhibiting more remarkable cytotoxicity. Nevertheless, 10 nm iron oxide nanoparticles group displayed the best antitumor effect in vivo. We studied the in vivo and intratumoral biodistribution of the nanoparticles and found that the therapeutic effects were related to both the tumoral accumulation and intratumoral distribution of nanoparticles. This work indicates the appropriate size of Fe3O4 NPs for cancer treatment and illustrates the possible factors that influence the therapeutic effect, suggesting the great potential of iron oxide in clinical application.
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Affiliation(s)
- Xiangrong Tian
- Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, Jiangsu 212001, China.,College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Li Ruan
- Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, Jiangsu 212001, China.,College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Shengwang Zhou
- College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Lin Wu
- Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, Jiangsu 212001, China
| | - Jin Cao
- College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Xueyong Qi
- College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Xin Zhang
- Affiliated Hospital of Jiangsu University, 438 Jiefang Road, Zhenjiang, Jiangsu 212001, China
| | - Song Shen
- College of Pharmaceutical Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
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