Microfluidics-Based Single-Cell Chemical Analysis of Cyanobacteria
Microfluidics-Based Single-Cell Chemical Analysis of Cyanobacteria
批准号:
0749638
负责人:
Richard Zare
金额:
$47.6万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
2008
资助国家:
美国
项目状态:
已结题
起止时间:
2008-07-01 至 2011-06-30
中文摘要
单细胞分析是一项新兴技术,有望为生物学提供新的视角。由于单细胞分析将细胞作为个体进行观察,因此它消除了总体平均并解决了样品群体中存在的异质性。 这种异质性可以提供关于重要细胞过程的有用信息,特别是如果大量细胞显示出与平均细胞行为的显著偏差。本研究计划将发展微流控平台上的单细胞分析技术,以研究单细胞蓝细菌聚球藻的藻胆体(PBS)降解过程。通过单分子检测,可以直接从单细胞裂解物中计数非常低拷贝数的荧光分子,这是漂白的蓝藻细胞的情况。这些工具将用于了解PBS降解在单细胞水平上的生化机制。更广泛的影响这个项目将对许多不同的研究领域产生重大影响。首先,从这项研究中获得的生物学见解将阐明一种看待生态多样性、微生物学以及它们之间相互关系的新方法。第二,单细胞技术将朝着细胞培养、细胞分离和操作以及细胞内内容物(蛋白质和核酸)分析的整合方向发展。通过这种综合方法,应该可以从单个细胞以及简单的表型变化中获得准确的生化信息。这种策略可以扩展到其他类型的细胞,并应提供一个新的范式研究生物异质性。第三,该项目本质上是跨学科的,涉及化学分析与生物结果。这种结合应该引起许多领域之间的协同对话,包括生态学,种群生物学和生物物理化学,从而为未来的研究提供更有成效的方向和动力。第四,将有一个强大的教学和培训的组成部分,无论是在本科和研究生水平,以及年度多学科研讨会,向参与者介绍单细胞技术在生物学中的潜在用途。
英文摘要
Single-cell analysis is an emerging technology that promises to provide new perspectives on biology. Because single-cell analysis observes cells as individuals, it eliminates ensemble averaging and resolves the heterogeneity present within a sample population. This heterogeneity can provide useful information with regard to important cellular processes, especially if a significant number of cells display a marked deviation from that of average-cell behavior. This research project will be to develop single-cell analysis technology on a microfluidic platform to study the phycobilisome (PBS) degradation process of a unicellular cyanobacterium Synechococcus. With the single-molecule detection, very low copy numbers of fluorescent molecules can be directly counted from a single-cell lysate, which is the case for bleached cyanobacteria cells. These tools will be used to understand the biochemical mechanism of PBS degradation at the single-cell level.Broader ImpactsThis project will have a significant impact on many different areas of research. First, the biological insight gained from this research will illuminate a new way of viewing ecological diversity, microbiology, and the interrelationship between them. Second, single-cell technology will be advanced toward the integration of cell culture, isolation and manipulation of cells, and the analysis of intracellular contents (both proteins and nucleic acids). With this integrative approach, it should be possible to obtain accurate biochemical information from individual cells as well as simple phenotypic changes. This strategy can be extended to other types of cells and should provide a new paradigm for studying biological heterogeneity. Third, this project is interdisciplinary in essence, involving chemical analysis with biological outcomes. This combination should induce a synergistic conversation between many fields, including ecology, population biology, and biophysical chemistry, resulting in more productive directions and motivations for future research. Fourth, there will be a strong component of teaching and training both at the undergraduate and graduate level as well as annual multidisciplinary workshops to introduce participants to the potential uses of single-cell technology in biology.
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