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説明:

Silica nanoparticles (SiO2NPs) are widely used in industrial products. Surface modification of SiO2NPs is one of the promising strategies to develop safer nanomaterials by design. The present study was designed to determine the effects of amino or carboxyl functionalization of rhodamine-labeled SiO2NPs on cellular uptake
and cytotoxicity.
NH2- or COOH-functionalization reduced the harmful changes observed with OH- SiO2NPs, which included increase in lung weight and BALF neutrophils at low dose in mice as well as decrease in cell viability and upregulation of proinflammatory cytokines in RAW264.7 macrophages. The results suggested that OH-SiO2NPs-induced cytotoxicity against macrophages was mediated at least in part through apoptotic/necroptotic signaling but was not related to internalization of particles. The results imply possible development of safer silica nanoparticles by amino- or carboxyl-functionalization of their silanols.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Silica Nanoparticles

刊行年月日: 2025-12-19

出版者: Springer Science and Business Media LLC

掲載誌:

• Particle and Fibre Toxicology (ISSN: 17438977) vol. 23 issue. 1 9

研究助成金:

• JSPS LS056
• Japan Society for the Promotion of Science #PE13040
• Japan Science and Technology Agency

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1186/s12989-025-00653-6

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更新時刻: 2026-03-07 12:30:12 +0900

MDRでの公開時刻: 2026-03-07 09:46:06 +0900