Interaction between silver nanoparticles of 20 nm (AgNP20 ) and human neutrophils: induction of apoptosis and inhibition of de novo protein synthesis by AgNP20 aggregates.
نویسندگان
چکیده
Cytotoxic and proinflammatory properties of silver nanoparticles (AgNPs) have been reported in few studies but the direct interaction between AgNPs and neutrophils, which play a key role in inflammation, has never been documented. Here, we examined the role of AgNPs with a starting size of 20 nm (AgNP20 ) in human neutrophils. Using dynamic light scattering for the characterization of NPs suspended under identical conditions to those used for in vitro experiments, we found that, at 10 µg ml(-1) , 92% of AgNP20 possess a diameter of 17.1 nm but, at 100 µg ml(-1) , a tri-modal size distribution with large aggregates was observed (> 500 nm). Neutrophil cell size increased when treated with AgNP20 and transmission electronic microscopy experiments revealed that AgNP20 can rapidly interact with the cell membrane, penetrate neutrophils, localize in vacuole-like structures, and be randomly distributed in the cytosol after 24 h. Treatment with 100 µg ml(-1) AgNP20 for 24 h (but not 10 µg ml(-1) ) increased the neutrophil apoptotic rate and inhibited de novo protein synthesis. We conclude that AgNP20 induced apoptosis and can act as potent inhibitors of de novo protein synthesis at 100, but not 10 µg ml(-1) in human neutrophils.
منابع مشابه
کاهش رشد سلولی و القای آپوپتوز در سلولهای سرطان استخوان توسط نانوذرّه نقره
Background and Aim: In the present studysynthesis of silver nanoparticles and the assessment of its toxicity against the proliferation of osteosarcoma cells were done. Materials and Methods: To confirm the production of silver nanoparticles, UV-Visible spectroscopy, X-ray diffraction, and TEM analyses were performed. MTT assay was used to evaluate the toxicity of nanoparticles against cancer c...
متن کاملDiverse Cytotoxic Capability of Silver Nanoparticles against the Normal and Cancerous Lymphocytes
Despite the toxic effects on numerous organs, silver nanoparticles can be used to cease cell cycle and promotes apoptosis in cancerous cells. Therefore, by choosing the right dosage nanoparticles can be helpful for cancer treatment, whilst do not harm normal tissues. In the current study, it has been tried to measure silver nanoparticles toxicity against HPB-ALL leukemia cell line and normal hu...
متن کاملDiverse Cytotoxic Capability of Silver Nanoparticles against the Normal and Cancerous Lymphocytes
Despite the toxic effects on numerous organs, silver nanoparticles can be used to cease cell cycle and promotes apoptosis in cancerous cells. Therefore, by choosing the right dosage nanoparticles can be helpful for cancer treatment, whilst do not harm normal tissues. In the current study, it has been tried to measure silver nanoparticles toxicity against HPB-ALL leukemia cell line and normal hu...
متن کاملInduction of apoptosis by novel inosine monophosphate dehydrogenase, 3-hydrogenkwadaphnin
Today’s medical word is highly dependent on severel natural products (e.g. taxol) in fighting different kinds of cancer and in constantly working to found new compounds. In this respect, 3-hydrogenkwadaphnin is a new diterpene ester isolated from Dendrostellera lessertii (Thymelaceae). It has been previously shown that this new compound has high anti-tumor activity and the capability of arresti...
متن کاملBrassica oleraceae, a versatile plant for green synthesis of silver nanoparticles
In the present paper, silver nanoparticles (AgNPs) were synthesized using the Brassica oleraceae fruit extract under the simple and eco-friendly conditions. The reaction between silver nitrate, as metal source, and aqueous extract of Brassica oleraceae fruit, as reductant agent, produced AgNPs in high yield. The formation of AgNPs was confirmed by means of UV-Vis spectroscopy and scanning elect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of applied toxicology : JAT
دوره 34 4 شماره
صفحات -
تاریخ انتشار 2014