阿里斯托洛希克酸I对人类诱导的功能性肝细胞样细胞的基因毒性作用
Yushi Hu1, Yuyang Lei1, Zhenna Gao1
1Faculty of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
Mutagenesis
|May 26, 2025
概括
阿里斯托洛希克酸I (AAI) 在人类肝细胞中引起DNA损伤和氧化应激. 抗氧化剂治疗可能有助于预防与AAI相关的肝癌.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
- 遗传学 是一个遗传学.
背景情况:
- 阿里斯托洛希克酸I (AAI) 是已知的致癌物,与人类癌症有关,但其在肝癌中的作用仍在争论中.
- 以前的动物研究显示出不一致的结果,表明AAI的物种特异性影响.
研究的目的:
- 研究AAI在人类诱导的肝细胞样 (hiHep) 细胞中的基因毒性和致癌潜力.
- 阐明AAI诱导的肝损伤的潜在机制,重点是氧化应激.
主要方法:
- 通过DNA添加物和hiHep细胞中的微核频率来评估AAI的基因毒性.
- 测量了氧化应激标志物 (8-基-2'-脱氧氨酸,活性氧物种) 和线粒体功能.
- 评估了甲酸盐治疗对AAI诱导的损伤的影响.
主要成果:
- AAI显著增加了hiHep细胞中的DNA adducts和微核频率,表明了基因毒性.
- 观察到高水平的氧化DNA损伤和线粒体功能障碍.
- 亚酸盐治疗减少了AAI诱导的氧化损伤和DNA添加物,证实了自由基的作用.
结论:
- AAI在人类肝细胞中表现出基因毒性作用,主要是通过氧化应激.
- 这些发现支持了AAI暴露和肝病之间的联系.
- 抗氧化剂疗法显示有潜力减轻与AAI相关的肝癌发生.
相关概念视频
Mutagenicity and Carcinogenicity
1.9K
Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
1.9K
Toxic Reactions: Overview
1.8K
When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
1.8K


