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Isolation of Lamina Propria Mononuclear Cells from Murine Colon Using Collagenase E
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Effective cell collection method using collagenase and ultrasonic vibration.

Y Kurashina1, K Takemura2, S Miyata2

  • 1School of Science for Open and Environmental Systems, Graduate School of Science and Technology, Keio University , Yokohama 223-8522, Japan.

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This study introduces a new method for collecting calf chondrocytes using collagenase and ultrasonic vibration. This technique offers improved cell proliferation and intact cell membranes compared to traditional methods.

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Materials Science

Background:

  • Adhesive cell culturing requires efficient and gentle cell collection methods.
  • Conventional methods like trypsinization can damage cell membranes and affect cell viability.
  • Developing non-destructive cell collection techniques is crucial for maintaining cell integrity and function.

Purpose of the Study:

  • To propose and evaluate a novel cell collection method for adhesive cells.
  • To utilize collagenase treatment combined with ultrasonic vibration for cell detachment.
  • To assess the efficacy and impact of this new method on cell morphology and proliferation.

Main Methods:

  • Calculated natural vibration modes of a metal cell culture substrate using finite element analysis.
  • Designed and fabricated a cell collection device based on piezoelectric-structural analysis and specific vibration modes.
  • Applied collagenase treatment and ultrasonic vibration to detach calf chondrocytes.
  • Evaluated cell collection ratio, growth response, and cell morphology.

Main Results:

  • The collagenase and ultrasonic vibration method yielded a comparable cell collection ratio to conventional trypsin and pipetting.
  • The proposed method demonstrated improved proliferating cell statistics.
  • Morphological analysis showed intact cell membranes, resulting in larger and rougher cells compared to the conventional method.

Conclusions:

  • The novel cell collection method using collagenase and ultrasonic vibration is a promising alternative for adhesive cell culturing.
  • This technique preserves cell membrane integrity, leading to enhanced cell characteristics.
  • The developed device and method offer a viable solution for gentle and effective cell harvesting.