Exploring cell and tissue mechanics with optical tweezers.

Area of Science:

• Mechanobiology
• Biophysics
• Cellular mechanics

Background:

• Cellular and tissue properties arise from molecular assembly.
• Understanding these properties and their influence on cellular function is key in mechanobiology.
• Calculating biosystem responses to force is complex due to molecular dynamics.

Purpose of the Study:

• To summarize principles and applications of optical tweezers for force measurements in living systems.
• To highlight the use of optical tweezers in measuring cellular mechanics within complex environments.
• To discuss the potential of optical tweezers in understanding mechanotransduction and disease.

Main Methods:

• Utilizing advanced optical tweezers technology for force measurements.
• Implementing optical trapping principles and calibration procedures.
• Combining optical tweezers with complementary techniques for in vivo measurements.

Main Results:

• Optical tweezers can now perform measurements inside cells of living animals.
• The technology allows manipulation of subcellular organelles.
• Cellular frequency-dependent mechanics can be measured in the piconewton range over extended time scales.

Conclusions:

• Optical tweezers are a versatile tool for in vivo mechanobiology research.
• Advances enable precise force measurements within complex biological systems.
• Further development will enhance the application of optical tweezers in understanding cellular mechanics and disease.