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发布日期:2019年09月24日    浏览次数:

南强学术讲座:蔡宗苇教授(2019年9月26日)


Analytical Challenge and Recent Progress in Research of Environmental Toxicology on Persistent Organic Pollutants


蔡宗苇 教授

香港浸会大学,“长江学者”讲座教授


时间:2019年9月26日(星期四)16:30

地点:卢嘉锡楼202报告厅

厦门大学谱学分析与仪器教育部重点实验室

厦门大学化学化工学院
2019年9月24日



报告摘要:
Persistent organic pollutants (POPs) exist in human body at trace levels. The molecular toxicology mechanism of POPs have long been neglected. Some newly listed POPs on Stockholm Convention do not even have a reliable toxicity data, which provides challenge for environmental and life science research on POPs.

Traditional environmental toxicology applied biological and chemical techniques to explore toxicological effects and mechanisms of pollutants in cells, animals and human samples. Study of spatial characteristics of biomolecule remains under-explored, such as heterogeneity of biological samples and spatial distribution of biomarkers. Mass spectrometry-based metabolomics and imaging (MSI) provides a comprehensive and high-throughput in situ analysis on tissues sections; it also shows the feature of macromolecules (proteins and peptides) and small molecules (lipids and metabolites), such as composition, abundance and specific distribution. In our study, a comprehensive method involving MS-based global lipidomics and matrix-assisted laser desorption/ionization-mass spectrometry (MALDI)-MSI were applied to study the toxic effects of bisphenol A (BPA) substitutes and the underlying mechanisms on mouse model. Herein, bisphenol S (BPS) was used to illustrate the nephrotoxicity of BPA substitutes on mouse model. Our results demonstrated that BPS exposure remarkable perturbed abundances of 91 potential markers that mainly involved in five metabolic pathways. We elucidated the lipids spatial heterogeneity by using morphological analysis, probabilistic latent semantic analysis and co-registered multimodal three-dimensional (3D)-MSI. The observed significant variations of morphology, lipid accumulation and metabolism in renal cortex implicated that lipids in renal cortex were more sensitive to BPS exposure than renal medulla and pelvis. The outcome of this study may be used in novel specificity evaluation and early diagnosis for environmental pollutants-induced kidney diseases.


报告人简介:

蔡宗苇教授1982年在厦门大学化学系获得学士学位,1990年在德国University of Marburg获得博士学位,1991-1994在美国University of Nebraska质谱研究中心从事博士后研究,1994-1996年为研究助理教授,1996-2000年在美国药物公司Glaxo-Wellcome任研究员,2001年起受聘于香港浸会大学副教授、教授、讲座教授,先后担任化学系系主任、研究院副院长。现被聘为香港浸会大学“郭一苇”环境与生物分析冠名讲座教授,同时担任二恶英分析实验室主任,环境与生物分析国家重点实验室主任。

蔡宗苇教授长期从事质谱的基础理论及其在环境、生物、药物和痕量有机污染物的应用研究,目前主要从事环境污染物相关的人体健康、疾病的代谢组学、蛋白质组学和质谱成像研究,已在国际专业刊物上发表450多篇论文,现受聘为国际质谱杂志“Rapid Communication in Mass Spectrometry”的主编。蔡宗苇教授多次被联合国环境规划署全球持久性有机污染物监测委员会邀请参加讨论和制定关于全球和亚太区域持久性有机污染物监测计划的执行和报告,并于2008年和2014年分别受联合国环境规划署聘请作为Principal Author编写第一个和第二个斯德哥尔摩公约下亚太地区持久性有机污染物监测和控制报告。

蔡宗苇教授是国家自然科学基金杰出青年基金获得者(海外B类,2003) ,曾经受聘教育部“长江学者”讲座教授 (2013)。2011年获国家自然科学二等奖(排名第五),2016年获中国分析测试协会科学技术奖一等奖(排名第一),2018年获中国环境科学学会颁发的“消除持久性有机污染物杰出贡献奖”(唯一获奖人),以及教育部高等学校科学研究优秀成果奖自然科学奖二等奖(排名第一)。