EPIGENIC TOXICITY OF POLYCYCLIC AROMATIC HYDROCARBONS

多环芳烃的表观毒性

• 批准号: 7359136
• 负责人: Brad L. Upham
• 金额: $ 4.07万
• 依托单位: UNIVERSITY OF MICHIGAN AT ANN ARBOR
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7359136
• 关键词: EPIGENIC; TOXICITY; POLYCYCLIC; AROMATIC; HYDROCARBONS

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Polycyclic aromatic hydrocarbons (PAHs) are abundant components of tobacco smoke that have been implicated in cancer formation. A large body of work indicates that these compounds induce genetic damage and this results cancer. However, cancer is not solely the consequence of non-reversible mutagenic events but also involves reversible, epigenetic events. Thus, there is a need to reassess the toxicity of PAHs at the epigenetic level. Gap junctional intercellular communication (GJIC) centrally modulates signal transduction pathways that epigenetically alters gene expression. There is considerable evidence linking abnormal regulation of GJIC with the non-genotoxic steps of tumor promotion. We have worked with the Upham laboratory to devise a proteomics approach to detect early changes in protein abundance and post-translational modification due to PAHs.

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。多环芳烃（PAHs）是烟草烟雾中的丰富成分，与癌症的形成有关。大量的研究表明，这些化合物会引起基因损伤，从而导致癌症。然而，癌症不仅仅是不可逆转的突变事件的结果，而且还涉及可逆的表观遗传事件。因此，有必要在表观遗传水平上重新评估多环芳烃的毒性。间隙连接细胞间通讯（GJIC）集中调节信号转导途径，表观遗传改变基因表达。有相当多的证据表明，GJIC的异常调节与肿瘤促进的非基因毒性步骤有关。我们与Upham实验室合作设计了一种蛋白质组学方法，用于检测多环芳烃引起的蛋白质丰度和翻译后修饰的早期变化。