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DNA-DAPI Interaction-Based Method for Cell Proliferation Rate Evaluation in 3D Structures.

Egidijus Šimoliūnas1, Paulius Kantakevičius1,2, Miglė Kalvaitytė1

  • 1Life Sciences Center, Department of Biological Models, Institute of Biochemistry, Vilnius University, LT-10257 Vilnius, Lithuania.

Current Issues in Molecular Biology
|June 2, 2021
PubMed
Summary

A new DNA-based method using DAPI dye effectively measures cell proliferation in 2D, 2.5D, and 3D tissue engineering scaffolds. This technique provides a reliable cell number snapshot for various cell types.

Keywords:
2D–3D environmentcell number evaluationcell proliferation

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Tissue Engineering

Background:

  • Monitoring cell number in 3D scaffolds is crucial for tissue engineering.
  • Existing 2D methods face limitations in 3D environments.
  • Reliable cell proliferation assessment in 3D is needed.

Purpose of the Study:

  • To develop and validate a novel DNA content-based method for evaluating cell proliferation.
  • To assess the method's compatibility with diverse cell cultures and dimensionalities (2D, 2.5D, 3D).

Main Methods:

  • Utilized DNA-binding dye DAPI for DNA content quantification.
  • Tested the method on cancer cell lines (MCF-7, MH-22a), fibroblast cells (Swiss 3T3), and primary mesenchymal stem cells.
  • Applied the method across 2D, 2.5D, and 3D cell culture environments.

Main Results:

  • The DAPI-based method successfully quantified cell proliferation in all tested environments.
  • Demonstrated compatibility with multiple cell types, including cancer cells, fibroblasts, and stem cells.
  • The method provides a convenient snapshot of cell number, though it doesn't differentiate viability.

Conclusions:

  • A novel, reliable DAPI-based method for DNA content analysis enables cell proliferation assessment in 3D.
  • This technique supports the evaluation of processes in 2.5D and 3D cultures.
  • The method offers a valuable tool for tissue engineering research.