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Reliably Engineering and Controlling Stable Optogenetic Gene Circuits in Mammalian Cells
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Generating mammalian stable cell lines by electroporation.

Patti A Longo1, Jennifer M Kavran, Min-Sung Kim

  • 1Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Methods in Enzymology
|September 10, 2013
PubMed
Summary

Generating stable mammalian cell lines is crucial for frequent recombinant protein production. This study details a robust method using electroporation and selection, optimized for CHO dhfr- and LEC1 cell lines, to create these essential cell lines.

Keywords:
Colonies of cellsDilute plasmid DNAElectroporationMethotrexate (MTX)Plating electroporated cellsProtocol

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Cell Biology

Background:

  • Recombinant protein expression in mammalian cells is vital for research and therapeutics.
  • Stable cell lines offer consistent, high-yield protein production compared to transient methods.
  • Developing efficient protocols for stable cell line generation is a key area in biomanufacturing.

Purpose of the Study:

  • To present a reliable method for generating stable mammalian cell lines for recombinant protein expression.
  • To optimize the process of stable cell line creation using electroporation and selection.
  • To identify specific cell lines that perform optimally with the described protocol.

Main Methods:

  • Utilizing electroporation for efficient DNA delivery into mammalian cells.
  • Implementing selection strategies to isolate cells with stable integration of the expression construct.
  • Focusing the protocol on Chinese Hamster Ovary (CHO) dhfr- and the LEC1 cell lines.

Main Results:

  • Successful generation of stable cell lines capable of expressing functional recombinant proteins.
  • Demonstration of the protocol's efficacy in CHO dhfr- and LEC1 cell lines.
  • Establishment of a reproducible method for long-term protein production.

Conclusions:

  • The described electroporation and selection method provides a robust approach for generating stable mammalian cell lines.
  • CHO dhfr- and LEC1 cell lines are highly suitable for this stable cell line generation protocol.
  • This method facilitates consistent and efficient recombinant protein production for various applications.