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Related Experiment Videos

Calcium phosphate transfection.

R E Kingston1, C A Chen, H Okayama

  • 1Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.

Current Protocols in Neuroscience
|April 23, 2008
PubMed
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This study details two calcium phosphate-based methods for eukaryotic cell transfection, suitable for both transient and stable gene expression. These protocols effectively introduce plasmid DNA into cells using precipitates, enhancing gene delivery efficiency.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biotechnology

Background:

  • Eukaryotic cell transfection is crucial for genetic studies.
  • Efficient delivery of nucleic acids into cells remains a challenge.
  • Calcium phosphate precipitation is a common method for DNA delivery.

Purpose of the Study:

  • To present two optimized calcium phosphate-based methods for eukaryotic cell transfection.
  • To enable both transient and stable transfection of monolayer cell cultures.
  • To compare the efficiency of different buffering systems and additives.

Main Methods:

  • Two calcium phosphate precipitation methods are described: direct layering with HEPES buffer and a gradual formation method with BES buffer.
  • Plasmid DNA is introduced to monolayer cell cultures via a precipitate.

Related Experiment Videos

  • Cell treatments with glycerol or DMSO were explored to enhance transfection efficiency.

    • Main Results:

    • Both methods facilitate the introduction of plasmid DNA into eukaryotic cells.
    • The BES-buffered system demonstrated high efficiency for stable transformation with circular plasmid DNA.
    • Similar transfection efficiencies were observed for linear plasmid or genomic DNA, and for transient expression, across both methods.

    Conclusions:

    • Calcium phosphate-based transfection offers a versatile approach for both transient and stable gene expression in eukaryotic cells.
    • The choice of buffering system and additives can be optimized for specific cell types and DNA constructs.
    • These protocols provide reliable methods for genetic manipulation of cell cultures.