三阴性乳腺癌
乳腺癌
肿瘤微环境
癌症研究
氧化应激
生物医学中的光声成像
细胞凋亡
纳米医学
多西紫杉醇
癌症
材料科学
医学
化学
纳米颗粒
内科学
纳米技术
肿瘤细胞
生物化学
物理
光学
作者
Jie Li,Xiang Li,Yan Yuan,Qi Wang,Lisi Xie,Yunlu Dai,Wenjun Wang,Lin Li,Xiaomei Lü,Quli Fan,Wei Huang
出处
期刊:Small
[Wiley]
日期:2020-09-02
卷期号:16 (39)
被引量:29
标识
DOI:10.1002/smll.202002939
摘要
Abstract The incidence of triple‐negative breast cancer (TNBC) is difficult to predict, and TNBC has a high mortality rate among women worldwide. In this study, a theranostics approach is developed for TNBC with ratiometric photoacoustic monitored thiol‐initiated hydrogen sulfide (H 2 S) therapy. The ratiometric photoacoustic (PA) probe (CY) with a thiol‐initiated H 2 S donor (PSD) to form a nanosystem (CY‐PSD nanoparticles) is integrated. In this theranostics approach, H 2 S generated from PSD is sensed by CY based on ratiometric PA signals, which simultaneously pinpoints the tumor region. Additionally, H 2 S is cytotoxic toward TNBC cells (MDA‐MB 231), showing a tumor inhibition rate of 63%. To further verify its pharmacological mechanism, proteomics analysis is performed on tumors treated with CY‐PSD nanoparticles. Cells are killed by the significant mitochondrial dysfunction via supressed energy supply and apoptosis initiation. Besides, the observed inhibition of oxidative stress also generates the cytotoxicity. Significant Kyoto Encyclopedia of Genes Genomes pathways related to TNBC are found to be inhibited. This H 2 S theranostics approach updates the current anticancer therapies which brings promise for women suffering malignant breast cancer.
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