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    Area of Science:

    • Cell Biology
    • Molecular Biology
    • Biotechnology

    Background:

    • DEAE-dextran is a common reagent for gene delivery into cells.
    • Optimizing transfection protocols is crucial for efficient genetic manipulation.
    • Balancing transfection efficiency and cell viability is a key challenge.

    Purpose of the Study:

    • To present two modified DEAE-dextran transfection protocols.
    • To compare the efficiency and toxicity of these new protocols.
    • To offer alternative methods for researchers seeking to optimize gene delivery.

    Main Methods:

    • Modification of the classical DEAE-dextran transfection procedure.
    • Testing a protocol with brief exposure to high DEAE-dextran concentration.
    • Testing a protocol with prolonged exposure to low DEAE-dextran concentration.

    Main Results:

    • High concentration, brief exposure yielded higher transfection frequencies.
    • High concentration, brief exposure resulted in elevated cellular toxicity.
    • Low concentration, prolonged exposure showed increased cell survival.
    • Low concentration, prolonged exposure resulted in lower transfection frequencies.

    Conclusions:

    • Two distinct DEAE-dextran transfection protocols offer different trade-offs.
    • Researchers can select a protocol based on the priority of transfection efficiency versus cell viability.
    • These modifications provide valuable options for optimizing gene delivery in various cell types.