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纳米颗粒通过OECM-1细胞中的Anoikis诱导触发细胞亡

Alejandra A Covarrubias^1,2,3,4, Mauricio Reyna-Jeldes^1,2,3,5, Seidy Pedroso-Santana^2,6

¹Departamento de Ciencias Biomédicas, Facultad de Medicina, Universidad Católica del Norte, Coquimbo 1781421, Chile.

International journal of molecular sciences

|June 27, 2024

概括

来自智利细菌的纳米粒子 (AsNPs) 在癌症治疗中显示出希望. 这些AsNP通过诱导细胞灭亡来选择性地杀死口腔癌细胞,提供了潜在的新治疗策略.

科学领域:

生物技术是生物技术.
纳米医学是一种纳米医学.
癌症研究癌症研究

背景情况:

化合物具有历史悠久的治疗应用,包括癌症治疗.
纳米粒子提供了新的药物输送和治疗潜力.
了解新型抗癌剂的机制对于临床转化至关重要.

研究的目的:

为了研究由细菌产生的纳米粒子 (AsNPs) 的抗癌作用.
评估ASNP对口腔状癌细胞 (OECM-1) 的影响.
为了阐明AsNP诱导的细胞死亡的机制.

主要方法:

从无氧细菌中分离出纳米粒子 (AsNPs).
在OECM-1和GES-1细胞系中,resazurin减少试验评估了细胞活力.
西方斑点,光度测量和TUNEL测定分析了亡标记 (Bcl2,Bax,分裂的卡斯帕斯3,卡斯帕斯3/7,DNA碎片化).
关键信号分子 (Akt,ERK,PTEN,p53,Bit-1) 的蛋白质和mRNA水平被量化.

主要成果:

AsNPs对OECM-1细胞表现出度依赖的细胞毒性作用,不影响GES-1细胞.
在OECM-1细胞中,AsNP治疗诱导了外部和内在的亡途径.
观察到P-Akt/Akt和P-ERK/ERK比率的下降,以及PTEN和p53mRNA和Bit-1蛋白水平的增加.
这些变化表明一种涉及阿诺基斯的机制,由细胞对细胞外基质的附着减少引发.

结论:

细菌衍生的ASNP显示出针对口腔状癌的选择性抗癌活性.
通过调节关键信号通路,AsNPs会诱导癌细胞的亡.
这些发现表明,AsNPs可能会触发anoikis,为癌症治疗提供了一种新的治疗机制.

关键词:

比特-1 位-1 位-1 位这是OECM-1的OECM-1.一个年轻的ikis anoikis 灭症 (apoptosis) 是一种死亡的过程.的纳米颗粒是的纳米粒子.状细胞癌 (SCLC) 是一种状细胞癌.

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