I-Corps: Quorum Sensing by Bacteria on Hosts Regulates Vector Attraction and Blood-Feeding

I-Corps：宿主细菌的群体感应调节病媒吸引和血液喂养

• 批准号: 1643346
• 负责人: Jeffery Tomberlin
• 金额: $ 5万
• 依托单位: Texas A&M AgriLife Research
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-08-15 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1643346&HistoricalAwards=false
• 关键词: Corps; Quorum; Sensing; Bacteria; Hosts

The broader impact/commercial potential of this I-Corps project will be the production of novel methods for reducing biting insects (e.g., mosquitoes, black flies, sand flies) causing harm to humans, companion animals and livestock. These methods include the development of novel repellents or traps for adult insects seeking to bite people. From a commercial perspective, such repellents would be ideal to protect humans, pets and livestock from these biting insects. These methods are a more environmentally friendly approach as they do not rely on insecticides as a means to repel adult insects. Traps will also be designed with this technology to trap female insects seeking locations to lay eggs. In all cases, these novel methods could reduce the incidence of disease, such as Zika and West Nile in humans or equine encephalitis.This I-Corps project provides a greater understanding of the link between arthropod behavioral ecology and the communication pathways utilized by the microbial communities associated with host skin could lead to a unique area of research, producing novel methods for suppressing pathogen tramnsmission, and thus reduce the impact of Zika virus, malaria, yellow fever, Dengue, leishmaniasis or other vector-borne diseases. Preventing communication (i.e., quorum sensing) between S. epidermidis (common bacterium on human skin) cells resulted in a 50% reduction of the mosquito Aedes aegypti (mosquito responsible for transmitting pathogen of Zika) to a blood-meal. Furthermore, many compounds produced by bacteria that inhibit quorum sensing by competing bacteria have been synthesized and presently are approved for use by the Federal Drug Administration as a cancer treatment or to treat patients with chronic infections. For example, Pseudomonas aeruginosa produces a fatty acid with structural similarity to diffusible signal factors. This non-traditional quorum sensing inhibition results in the dispersal of pre-existing biofilms and prevents new biofilm development. These same compounds, which are commercially available, in combination with the results from our research could lead to the development of field-ready applications.

这个I-Corps项目更广泛的影响/商业潜力将是开发减少叮咬昆虫的新方法（例如，蚊子、黑蝇、沙蝇）对人类、伴侣动物和牲畜造成伤害。这些方法包括开发新的驱虫剂或诱捕器，以捕捉试图咬人的成年昆虫。从商业角度来看，这种驱虫剂将是保护人类、宠物和牲畜免受这些叮咬昆虫侵害的理想选择。这些方法是一种更环保的方法，因为它们不依赖杀虫剂作为驱赶成虫的手段。还将利用这项技术设计陷阱，以诱捕寻找产卵地点的雌性昆虫。在所有情况下，这些新方法都可以降低疾病的发病率，例如人类的寨卡病毒和西尼罗河病毒或马脑炎。这个I-Corps项目提供了对节肢动物行为生态学和与宿主皮肤相关的微生物群落所利用的通信途径之间联系的更好理解，可能会导致一个独特的研究领域，产生抑制病原体传播的新方法，从而减少寨卡病毒、疟疾、黄热病、登革热、利什曼病或其他病媒传播疾病的影响。防止通信（即，群体感应）之间的S.表皮（人类皮肤上的常见细菌）细胞导致埃及伊蚊（负责传播寨卡病毒病原体的蚊子）减少50%成为血粉。此外，已经合成了许多由细菌产生的抑制竞争细菌群体感应的化合物，并且目前已被联邦药物管理局批准用作癌症治疗或治疗慢性感染患者。例如，铜绿假单胞菌产生与扩散信号因子具有结构相似性的脂肪酸。这种非传统的群体感应抑制导致预先存在的生物膜的分散，并防止新的生物膜的发展。这些相同的化合物，这是商业上可获得的，结合我们的研究结果可能会导致现场应用的发展。