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Related Experiment Video

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The Submerged Printing of Cells onto a Modified Surface Using a Continuous Flow Microspotter
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Block-Cell-Printing for live single-cell printing.

Kai Zhang1, Chao-Kai Chou, Xiaofeng Xia

  • 1Department of Nanomedicine and Department of Systems Medicine and Bioengineering, Houston Methodist Research Institute, Houston, TX 77030.

Proceedings of the National Academy of Sciences of the United States of America
|February 12, 2014
PubMed
Summary
This summary is machine-generated.

Block-Cell-Printing (BloC-Printing) is a novel live-cell printing method for creating single-cell arrays. This technique rapidly characterizes cancer cell migration and invasion capabilities using cell protrusion analysis.

Keywords:
cell arraycell communicationneuron patterningprotrusion profiling

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Bioengineering

Background:

  • Precise manipulation and high-throughput analysis of single cells are crucial for understanding cellular functions and disease mechanisms.
  • Existing cell printing techniques often face limitations in speed, resolution, or cell viability.

Purpose of the Study:

  • To introduce and validate a novel live-cell printing technique, Block-Cell-Printing (BloC-Printing), for creating functional single-cell arrays.
  • To demonstrate the utility of BloC-Printing for high-throughput characterization of cancer cell biophysical properties, specifically membrane protrusion dynamics related to migration and invasion.
  • To assess the compatibility of BloC-Printing with different cell types, including primary neurons.

Main Methods:

  • Development of a microfluidic device utilizing hook-shaped traps for precise cell positioning and transfer, adapted from woodblock printing principles.
  • Application of BloC-Printing for the rapid, multiplexed construction of single-cell arrays and heterotypic cell pairs.
  • Quantification of cell protrusion characteristics (percentage, extension rate, length) for six breast cancer cell types within the BloC-Printing device.
  • Evaluation of primary neuron compatibility with the BloC-Printing technique.

Main Results:

  • BloC-Printing achieves a minimum turnaround time of 0.5 hours, a resolution of 5 µm, and near 100% cell viability.
  • The technique efficiently constructs protrusion-connected single-cell arrays and enables large-scale formation of heterotypic cell pairs with controlled morphology.
  • Quantified cell protrusion characteristics in breast cancer cells correlated well with their migration levels, establishing BloC-Printing as a tool for invasion and migration assessment.
  • Primary neurons were successfully printed, demonstrating broad cell type compatibility.

Conclusions:

  • BloC-Printing offers a rapid, precise, and high-throughput method for generating functional single-cell arrays and analyzing cell behavior.
  • The technique provides a valuable tool for characterizing cancer cell invasion and migration capabilities through quantitative analysis of membrane protrusions.
  • BloC-Printing is a versatile platform compatible with diverse cell types, including primary neurons, with potential applications in various fields of cell biology research.