[Using shock waves for transfer of molecules in cells]

Area of Science:

• Biophysics
• Cell Biology
• Biotechnology

Background:

• Investigating novel methods for intracellular molecule delivery is crucial for advancing cell biology and biotechnology.
• Shockwave technology offers a non-invasive physical stimulus with potential applications in biological systems.
• Understanding cavitation dynamics is key to controlling shockwave-induced cellular effects.

Purpose of the Study:

• To evaluate the efficacy of shockwaves in facilitating the transfer of marker molecules into human lymphocytes (L1210) in vitro.
• To characterize the role of transient cavitation in shockwave-mediated molecule uptake.
• To compare the effectiveness of different shockwave generators for this application.

Main Methods:

• Human lymphocytes (L1210) mixed with fluorescent marker molecules were exposed to shockwaves in vitro.
• Two shockwave generators, an electrohydraulic generator (XL-1) and a piezoelectric generator (PR-II), were employed.
• Cellular uptake of marker molecules was assessed, correlating with cavitation characteristics and shockwave parameters (pulse energy, number of pulses).

Main Results:

• Shockwaves induced transient cavitation, leading to marker molecule uptake by lymphocytes.
• The piezoelectric generator (PR-II) demonstrated higher effectiveness compared to the electrohydraulic generator (XL-1).
• Up to 70% of surviving cells successfully took up marker molecules, dependent on pulse energy and number of pulses.

Conclusions:

• Shockwave-mediated molecule transfer is an effective method for delivering molecules into cells in vitro.
• The technique holds promise as a research tool in medical and biotechnological fields.
• The potential for in vivo applications, such as drug delivery and cell transfection, warrants further investigation due to shockwaves' penetration capabilities.