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【講座題目】Arsenic exposure, metabolism, and health effects
【時(shí) 間】2024年3月28日 上午:10:30-12:00
【地 點(diǎn)】保定校區(qū) 教九報(bào)告廳
【主講人】X. Chris Le,加拿大皇家科學(xué)院院士,首席科學(xué)家,Alberta大學(xué)杰出教授
【主講人簡(jiǎn)介】
X. Chris Le教授自1995年以來(lái),在加拿大阿爾伯塔大學(xué) (University of Alberta) 醫(yī)學(xué)院任教,并在理學(xué)院化學(xué)系和公共健康學(xué)院環(huán)境健康專(zhuān)業(yè)兼職,于2006年創(chuàng)建分析與環(huán)境毒理交叉學(xué)科研究室、長(zhǎng)期擔(dān)任主任。 在生命分析化學(xué)、環(huán)境科學(xué)、分子毒理、公共衛(wèi)生與健康等領(lǐng)域發(fā)表文章300余篇。Le教授曾獲得加拿大自然科學(xué)與工程研究院頒發(fā)的青年科學(xué)家獎(jiǎng)、第一批加拿大首席科學(xué)家、加拿大化學(xué)會(huì)頒發(fā)的分析化學(xué)成就獎(jiǎng)和環(huán)境科學(xué)成就獎(jiǎng)、Alberta大學(xué)頒發(fā)的優(yōu)秀導(dǎo)師獎(jiǎng)、杰出科研獎(jiǎng)、以及大學(xué)最高榮譽(yù)獎(jiǎng)杯等二十多項(xiàng)榮譽(yù)和獎(jiǎng)勵(lì)。2010年,Le教授當(dāng)選為加拿大皇家科學(xué)院院士,2011年,當(dāng)選為Alberta大學(xué)杰出教授。
【報(bào)告內(nèi)容簡(jiǎn)介】
Arsenic affects more than 200 million people around the world. Chronic exposure to inorganic arsenic increases the risk of many cancers (e.g., bladder, lung, and skin) and non-cancerous effects (e.g., diabetes and heart diseases). Environmental prevalence, biochemical complexity, toxicological effects, and regulatory priority continue to challenge arsenic researchers. We focus on developing analytical techniques to characterize arsenic species, assessing human exposure from water and food, studying arsenic metabolism, and investigating molecular mechanisms responsible for arsenic health effects. Mass spectrometry and liquid chromatography techniques have enabled the identification and quantification of trace arsenic species in the environmental and biological systems. Mechanistic studies on arsenic binding to proteins and inhibition of DNA repair have implicated co-carcinogenesis of arsenic. Studies of molecular interactions inside living cells have enabled imaging of biochemical processes. Our research on arsenic is enhanced by our development of analytical techniques and assays for DNA damage and DNA-protein interactions.