I-Corps: Kytopen: Expanding the language of biology with pulsed electric fields

I-Corps：Kytopen：用脉冲电场扩展生物学语言

• 批准号: 1562925
• 负责人: Cullen Buie
• 金额: $ 5万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-10-15 至 2017-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1562925&HistoricalAwards=false
• 关键词: Corps; Kytopen; Expanding; language; biology

The potential to solve many of mankind's most pressing challenges including the needs for alternative fuels, enhancing oil recovery, and even treating cancer could involve engineering the numerous bacteria currently beyond one's reach. There are many types of bacteria that can be grown in the lab but their potential impact on people's lives has not been realized. New tools are needed to unlock bacteria?s true potential to solve many challenges of interest to mankind. Creating tools to accelerate discovery of new cancer treatments, alternative fuels, or low cost biomaterials will significantly impact human life. Population growth and increasing lifespans are putting ever increasing demands on the environment, driving need for alternative sources of fuels, food, and medicines. Bacteria have been a bit neglected as sources for innovation; however, they already have the internal machinery to help do industrial processes in a fast and efficient manner.Pulsed electric fields (i.e. electroporation) can be used to deliver genetic material into many types of cells including bacteria. The goal of this proposal is to substantially expand the successful application of pulsed electric fields to bacteria and enable discovery of new applications in genetic engineering and synthetic biology. A major limitation of synthetic biology is the inability to incorporate genetic material into many bacteria due to the challenge of permeating the cell envelope while maintaining high cell viability. This team's goal is to reduce the time required to develop tools to genetically manipulate bacteria from months or even years to days. This I-Corps team has developed a proof-of-concept microfluidic device to enable the characterization of the critical electric field for bacterial electroporation under specific experimental conditions in a single experiment. The team is devising a technique to test several thousand unique conditions within a single day, spanning the entire parametric space. This will be done using a microfluidic platform, or several in parallel, to test small aliquots of cells at varying experimental conditions. Therefore, the proposed microfluidic system enables quantification of the critical electroporation parameters in a single experiment, which would otherwise require months of experimentation. The proposed innovation will allow two significant advancements: 1) the ability to quickly determine high yield electroporation conditions and 2) the ability to utilize many of the more than 10,000 bacterial strains that have been heretofore intractable or difficult to genetically manipulate.

解决人类许多最紧迫挑战的潜力，包括对替代燃料的需求、提高石油采收率，甚至治疗癌症，可能需要对目前人类无法达到的众多细菌进行改造。有许多类型的细菌可以在实验室中培养，但它们对人们生活的潜在影响尚未被认识到。需要新的工具来释放细菌的真正潜力，以解决人类感兴趣的许多挑战。创建工具来加速发现新的癌症治疗方法、替代燃料或低成本生物材料将极大地影响人类的生活。人口增长和寿命延长对环境提出了越来越高的要求，推动了对替代燃料、食品和药品来源的需求。细菌作为创新的源泉有点被忽视了。然而，它们已经拥有内部机械来帮助快速有效地进行工业过程。脉冲电场（即电穿孔）可用于将遗传物质传递到包括细菌在内的多种类型的细胞中。该提案的目标是大幅扩展脉冲电场在细菌中的成功应用，并在基因工程和合成生物学中发现新的应用。合成生物学的一个主要限制是，由于在保持高细胞活力的同时渗透细胞膜的挑战，无法将遗传物质整合到许多细菌中。该团队的目标是将开发基因操纵细菌的工具所需的时间从数月甚至数年减少到数天。 I-Corps 团队开发了一种概念验证微流体装置，能够在单个实验中表征特定实验条件下细菌电穿孔的临界电场。该团队正在设计一种技术，可以在一天内测试跨越整个参数空间的数千个独特条件。这将使用微流体平台或多个并行平台来完成，以在不同的实验条件下测试小等份的细胞。因此，所提出的微流体系统能够在单个实验中量化关键电穿孔参数，否则这将需要数月的实验。所提出的创新将带来两项重大进展：1）能够快速确定高产电穿孔条件；2）能够利用迄今为止难以处理或难以进行基因操作的 10,000 多种细菌菌株中的许多菌株。