相关实验视频

Updated: Jan 28, 2026

Production and Detection of Reactive Oxygen Species ROS in Cancers

Production and Detection of Reactive Oxygen Species ROS in Cancers

Published on: November 21, 2011

聚乙烯纳米塑料通过一种涉及反应性氧物种和伊塔可纳酸盐的机制增加了巨细胞的杀菌活性

Seyedeh Safoora Moosavi¹, Hamlet Acevedo Ospina¹, Albert Descoteaux¹

¹INRS-Centre Armand-Frappier Santé Biotechnologie, Laval, QC H7V1B7, Canada.

Nanomaterials (Basel, Switzerland)

|January 27, 2026

概括

聚乙烯纳米塑料通过增加活性氧物种和伊塔康酸盐生产来增强巨细胞的杀菌活性. 这项研究揭示了纳米塑料.

科学领域:

环境科学环境科学
毒理学毒理学毒理学
细胞生物学细胞生物学

背景情况:

纳米塑料是新兴的环境污染物.
巨体内化纳米塑料,可能会影响免疫反应.
纳米塑料对巨细胞功能的影响需要进一步调查.

研究的目的:

为了研究聚乙烯纳米塑料对巨细胞功能的影响.
阐明纳米塑料诱导的巨杀菌活性变化背后的机制.

主要方法:

巨体被暴露在50nm聚烯纳米塑料中.
用显微镜确定纳米塑料的细胞局部.
测量了杀菌活性,活性氧物种 (ROS) 生产,氧化 (NO) 释放和基因表达.
评估了NADPH氧化酶和伊塔康酸在纳米塑料诱导效应中的作用.

主要成果:

聚烯纳米塑料在巨细胞内体,溶酶体和内细胞网膜中被发现.
纳米塑料暴露增加了巨细胞的杀菌活性,ROS产量和伊塔康酸盐水平.
增加的杀菌活性取决于NADPH氧化酶和乙酸盐脱碳酶1 (参与乙酸盐生产).
在暴露于纳米塑料后,氧化的释放量减少.

结论:

聚烯纳米塑料增强了巨细胞的杀菌活性.
这种增强是由反应性氧物种和线粒体代谢物伊塔康酸盐的产量增加所促成的.
纳米塑料可以通过这些机制调节免疫反应.

关键词:

它具有杀菌活性,具有杀菌活性.这就是 itaconate.巨细胞是什么?巨细胞是什么?聚乙烯纳米塑料的纳米塑料.有活性氧物种的反应性氧物种.

更多相关视频

In Vivo Imaging of Reactive Oxygen Species in a Murine Wound Model

In Vivo Imaging of Reactive Oxygen Species in a Murine Wound Model

Published on: November 17, 2018

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa

Evaluation of Intracellular Location of Reactive Oxygen Species in Solea Senegalensis Spermatozoa

Published on: March 11, 2018

相关概念视频

What is a Species?

What is a Species?

Formation of Species

Formation of Species

Speciation describes the formation of one or more new species from one or sometimes multiple original species. The resulting species are discrete from the parent species, and barriers to reproduction will typically exist. There are two primary mechanisms, speciation with and without geographic isolation—allopatric and sympatric speciation, respectively.

Keystone Species

Keystone Species

Measures of species biodiversity, such as richness (i.e., the number of species present) and evenness (i.e., their relative abundance), describe an ecological community’s structure. Many factors affect community structure, including abiotic factors (e.g., sunlight and nutrients), disturbances (e.g., fire or flood), species interactions (e.g., predation or competition), and chance events (e.g., foreign species invasion). Certain species—such as keystone species—also play a...

Reaction Mechanisms

Reaction Mechanisms

Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation indicates the reacting species and the product species, but it reveals no details about how the reaction occurs at the molecular level. The reaction mechanism (or reaction path) provides details regarding the precise, step-by-step process by which a reaction occurs.
For instance, the decomposition of ozone appears to follow a mechanism with two steps:

Cross-reactivity

Cross-reactivity

Reactivity of Enols

Reactivity of Enols

Enols are a class of compounds where a hydroxyl group is attached to a carbon–carbon double bond, which implies that it is a vinyl alcohol. A carbonyl compound with an α hydrogen undergoes keto–enol tautomerism and remains in equilibrium with its tautomer, the enol form. Usually, the keto tautomer is present in a higher concentration than the enol tautomer due to the higher bond energy of C=O compared to C=C. Moreover, the direction of the keto–enol equilibrium is...