Cell technology employing femtosecond laser pulses

Area of Science:

• Biomedical Engineering
• Reproductive Biology
• Laser Technology

Background:

• Cell surgery and embryo manipulation are critical in reproductive technologies.
• Existing methods for embryo biopsy and assisted hatching can be invasive.
• The need for non-damaging, precise tools for embryonic manipulation is significant.

Purpose of the Study:

• To demonstrate the practical advantages of femtosecond laser pulses in cell surgery.
• To develop and evaluate femtosecond laser-assisted techniques for embryo manipulation.
• To assess the developmental capacity of embryos post-manipulation.

Main Methods:

• Utilized femtosecond laser pulses for precision zona pellucida punching in embryos.
• Employed femtosecond laser tweezers/scalpel for auxiliary laser hatching.
• Developed an optical biopsy technique for non-contact embryonic material sampling.

Main Results:

• Femtosecond laser pulses enabled precise zona pellucida punching without cellular damage.
• Successful auxiliary laser hatching and optical biopsy of mammalian embryos were achieved.
• Approximately 90% of manipulated embryos retained the ability to develop to the blastula stage.

Conclusions:

• Femtosecond laser technology provides a precise and minimally invasive approach for embryo manipulation.
• Optical biopsy using femtosecond lasers facilitates non-contact preimplantation diagnostics.
• The high developmental potential observed suggests the safety and efficacy of these laser-assisted techniques.