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Related Concept Videos

Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

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Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
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Microfluidic Buffer Exchange for Interference-free Micro/Nanoparticle Cell Engineering
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Multifunctional assembly of micrometer-sized colloids for cell sorting.

Chenyao Nie1, Bing Wang1, Jiangyan Zhang1

  • 1Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.

Small (Weinheim an Der Bergstrasse, Germany)
|January 24, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method for assembling large, multifunctional magnetic micro-colloids. This approach enables advanced applications in cell isolation and imaging by combining magnetic, optical, and biological properties.

Keywords:
cell sortingcolloidsoligo (p-phenylene vinylene)self-assembly

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biotechnology

Background:

  • Limited research exists on assembling micrometer-sized colloids compared to nanometer-sized ones.
  • Multifunctional micrometer-sized colloids offer potential for advanced applications but require novel assembly strategies.

Purpose of the Study:

  • To develop a bottom-up approach for creating self-assembled micrometer-sized magnetic colloids.
  • To impart magnetic, optical, and biological functionalities to these colloidal assemblies.

Main Methods:

  • Utilized biotinylated oligo (p-phenylene vinylene) (OPV) derivatives to mediate self-assembly.
  • Employed streptavidin-modified magnetic beads as building blocks.
  • Incorporated OPV for fluorescence imaging and antibodies for cell recognition.

Main Results:

  • Successfully constructed self-assemblies of micrometer-sized magnetic colloids with combined functionalities.
  • Demonstrated fluorescence imaging capability for tracking the assembly process.
  • Achieved enhanced cell isolation performance due to amplified magnetic response.

Conclusions:

  • The developed bottom-up approach is effective for creating multifunctional micrometer-sized magnetic colloidal assemblies.
  • This method is conceptually simple and readily achievable.
  • The multifunctional assemblies show promise for applications like cell isolation and diagnostics.