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Gene delivery by direct injection (microinjection) using a pulsed-flow system.

|April 10, 2012

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This protocol details pulsed-flow microinjection, a common method offering enhanced control over injection parameters. This technique reduces variability and minimizes cell damage through direct needle insertion.

Area of Science:

Cell biology
Biotechnology
Microscopy and imaging

Background:

Microinjection is a key technique for introducing substances into cells.
Traditional microinjection systems can cause cell damage and variability.
Pulsed-flow systems offer improved control over injection parameters.

Purpose of the Study:

To describe a pulsed-flow microinjection protocol using Eppendorf FemtoJet and InjectMan systems.
To highlight the advantages of pulsed-flow microinjection over controlled-flow systems.
To emphasize the benefits of diagonal needle insertion for reduced cell damage.

Main Methods:

Utilizes the Eppendorf FemtoJet injector and Eppendorf InjectMan for pulsed-flow microinjection.
Employs a diagonal needle insertion technique for direct cell piercing.

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Focuses on precise control over injection parameters to minimize variability.

Main Results:

Pulsed-flow microinjection provides superior control over injection parameters compared to controlled-flow systems.
The diagonal insertion method results in direct cell piercing, which is faster.
This technique may cause less damage to cells than traditional methods.

Conclusions:

Pulsed-flow microinjection with Eppendorf systems offers enhanced precision and reduced cell damage.
The described method is a valuable advancement for cellular research requiring accurate microinjection.
Diagonal needle insertion is a key feature for improving cell viability during microinjection.