项目名称: 大气压低温冷等离子体活性成分对耐甲氧西林金黄色葡萄球菌(MRSA)灭活的生物学分子机制
项目编号: No.51477136
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 电工技术
项目作者: 郭莉
作者单位: 西安交通大学
项目金额: 90万元
中文摘要: 等离子体医学是一个新兴的交叉学科领域,大气压常温冷等离子体射流的出现,大大促进了等离子体医学应用的研究,目前等离子体医学最早也是最广泛的应用是等离子体灭菌。通过物理诊断研究推测是含氧和含氮的活性成分在等离子体灭活微生物过程中发挥关键作用,但是这些活性成分与微生物作用的生物学机制都尚不清楚。本项目组拟以等离子体亚致死剂量处理耐甲氧西林金黄色葡萄球菌(MRSA)为模型,结合微生物学、分子生物学和等离子体技术,在分子和细胞水平解析等离子体活性氧成分(ROS)和活性氮成分(RNS)对微生物的生物效应以及灭菌机制。通过本研究的开展,增加对等离子体灭菌生物机制和物理机制的认识,对等离子体活性成分作用机制的研究能够为等离子体的科学应用提供指导。
中文关键词: 等离子体;耐甲氧西林金黄色葡萄球菌;灭活;生物效应;分子机制
英文摘要: Plasma Medicine is an quickly emerging interdisciplinary field. The invention of cold atmospheric pressure plasma jet greatly facilitated the study of medical applications of plasma. The first and most widely applications of plasma medicine is sterilization. Reactive oxygon and nitrogen species were speculated to play important roles in inactivation of microorganisms through physical diagnosis. However, the biological mechanism underlying is still in its infancy, which becomes one of the major obstacles on the way to plasma medical applications. Here, we plan to elucidate the biological effects of the reactive oxygon speices (ROS) and reactive nitrogen speices (RNS) and thus the molecular mechanisms of plasma sterilization by treating the methicillin-resistant Staphylococcus aureus (MRSA) with sublethal plasma dose, through combining microbiology, molecular biology and plasma technologies. This basic knowledge will inevitably supply scientific basis and evaluation for plasma sterilization applications, particularly for drug resistant pathogens as MRSA.
英文关键词: Plasma;Methicillin-resistant Staphylococcus aureus (MRSA);Inactiviation;Biological effect;Molecular mechanisms