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A Microfluidic Platform for High-throughput Single-cell Isolation and Culture
Published on: June 16, 2016
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Systems nanobiology: from quantitative single molecule biophysics to microfluidic-based single cell analysis.
Joerg Martini1, Wibke Hellmich, Dominik Greif
1Experimental Biophysics and Applied Nanoscience, Physics Faculty, Bielefeld University, Germany.
Sub-Cellular Biochemistry
|October 24, 2007
Summary
Systems nanobiology uses ultrasensitive methods to study single molecules and cells. This research details techniques for analyzing gene expression, protein dynamics, and single-cell proteomics for a quantitative understanding of cellular processes.
Area of Science:
- Systems nanobiology
- Quantitative cell biology
- Single-molecule analysis
Background:
- Understanding cellular organization and dynamics requires quantitative data on molecular interactions and concentrations.
- Single-molecule and single-cell approaches bypass ensemble averaging, revealing crucial distribution functions and subpopulations.
- Investigating genomic and proteomic variability at the single-cell level is essential for understanding functional differences.
Purpose of the Study:
- To present novel ultrasensitive methods for quantitative analysis of cellular processes at the single-molecule and single-cell levels.
- To demonstrate applications in gene expression regulation, intracellular protein dynamics, and single-cell proteomics.
- To showcase techniques enabling analysis without amplification or preconcentration.
Main Methods:
- Single-molecule force spectroscopy for quantitative investigation of DNA-protein interaction kinetics and molecular affinity ranking.
- Photoactivable green fluorescent protein (GFP) and two-photon laser scanning microscopy for monitoring intracellular protein translocation dynamics.
- Microfluidic-based, label-free methods for single-cell proteomics, fingerprinting, and manipulation, including single-cell electropherograms.
Main Results:
- Quantitative insights into transcriptionally regulated DNA-protein interactions.
- Precise monitoring of transcription regulator migration dynamics between cellular compartments.
- Development of label-free single-cell proteomic analysis and manipulation techniques.
Conclusions:
- Ultrasensitive methods provide essential quantitative data for systems nanobiology and cell biology.
- These techniques facilitate detailed analysis of gene expression, protein dynamics, and cellular heterogeneity.
- The presented methodologies advance the field by enabling label-free, high-resolution analysis of single cells and molecules.
