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Related Concept Videos

Subcellular Fractionation01:32

Subcellular Fractionation

The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...

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Capillary Electrophoresis to Monitor Peptide Grafting onto Chitosan Films in Real Time
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Published on: October 26, 2016

Cell fractionation on pH-responsive chitosan surface.

Yi-Hsin Chen1, Shao-Hsuan Chang, Tsung-Jen Wang

  • 1Institute of Polymer Science and Engineering, College of Engineering, National Taiwan University, Taipei 106, Taiwan.

Biomaterials
|November 13, 2012
PubMed
Summary
This summary is machine-generated.

pH-responsive chitosan enables precise cell fractionation by adjusting medium pH. This method separates cells based on differential detachment rates, offering a novel approach for cell manipulation and tissue specimen analysis.

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Area of Science:

  • Biomaterials Science
  • Cell Biology
  • Biotechnology

Background:

  • Cell separation is crucial for research and clinical applications.
  • Current methods often involve antibodies, enzymes, or extensive washing, which can affect cell viability and function.
  • Developing label-free, efficient cell separation techniques is highly desirable.

Purpose of the Study:

  • To demonstrate the efficacy of pH-responsive chitosan for precise cell fractionation.
  • To investigate the differential detachment rates of cells from chitosan surfaces at varying pH levels.
  • To establish a method for cell separation applicable to tissue specimens.

Main Methods:

  • Cells were cultured on pH-responsive chitosan surfaces at pH 7.20.
  • Medium pH was subsequently increased to 7.65 to induce differential cell detachment.
  • Cell morphology and detachment rates were analyzed to assess separation efficiency.

Main Results:

  • Successful cell separation was achieved by exploiting differential detachment rates at pH 7.65.
  • Elongated cells detached faster than round cells, enabling their separation.
  • The method proved effective for manipulating viable cell populations from tissue specimens.
  • Cell fractionation efficiency could be theoretically predicted based on individual cell detachment rates.

Conclusions:

  • pH-responsive chitosan provides a robust platform for label-free cell fractionation.
  • The technique allows for precise separation of cell populations based on intrinsic properties.
  • This method holds potential for applications in cell-based therapies and diagnostics.