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Related Experiment Videos

Laser-assisted microinjection into targeted animal cells.

Samarendra K Mohanty1, Mrinalini Sharma, Pradeep K Gupta

  • 1Biomedical Applications Section Center for Advanced Technology, Indore-452013, India.

Biotechnology Letters
|August 2, 2003
PubMed
Summary

Pulsed laser technology efficiently delivered impermeable dyes and a plasmid into breast cancer cells. This laser-assisted transfer preserved cell membrane integrity and viability.

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Laser Physics

Background:

  • Efficient intracellular delivery of molecules into cancer cells is crucial for therapeutic and research applications.
  • Traditional methods often struggle with delivering impermeable substances like dyes and plasmids without compromising cell viability.

Purpose of the Study:

  • To investigate the efficacy of pulsed laser-assisted delivery of impermeable molecules into human breast adenocarcinoma cells.
  • To assess the impact of this method on cell membrane integrity and overall cell viability.

Main Methods:

  • Utilized a pulsed Nd:YAG laser (1064 nm, 17 nanoseconds) for targeted delivery.
  • Introduced impermeable dyes (propidium iodide, merocyanine 540) and a plasmid encoding green fluorescent protein (pEGFP-N1) into MCF-7 cells.

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Main Results:

  • Successfully injected impermeable dyes and a plasmid into MCF-7 cells using laser-assisted transfer.
  • Demonstrated full preservation of cell membrane integrity post-delivery.
  • Confirmed high cell viability after the laser-assisted transfer procedure.

Conclusions:

  • Pulsed laser technology offers a viable method for delivering impermeable molecules into breast cancer cells.
  • This technique maintains cellular integrity and viability, paving the way for advanced cell-based assays and therapies.