Related Experiment Video
Updated: Jul 14, 2026
12:52
Micromanipulation Techniques Allowing Analysis of Morphogenetic Dynamics and Turnover of Cytoskeletal Regulators
Published on: May 12, 2018
Optical micromanipulation methods for controlled rotation, transportation, and microinjection of biological objects
1Laser Biomedical Applications and Instrumentation Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India.
Methods in Cell Biology
|June 26, 2007
Summary
Laser tweezers enable precise manipulation of biological samples, including cell rotation and transport. This technology shows promise for diagnosing malaria and guiding neuronal growth, with potential for drug delivery.
Area of Science:
- Biophysics
- Cell Biology
- Optical Engineering
Background:
- Laser tweezers utilize focused laser beams to trap and manipulate microscopic objects.
- Biological applications require precise control over cell orientation, transport, and material delivery.
- Understanding cell mechanics, like red blood cell deformation, is crucial for advanced manipulation.
Purpose of the Study:
- To review laser microtool applications in biological sample manipulation.
- To highlight methods for 2D and 3D rotation and transport of microscopic biological objects.
- To explore laser-assisted microinjection and its potential impact on cell viability.
Main Methods:
- Overview of laser tweezers for object rotation and orientation.
- Application of optical trapping for inducing red blood cell rotation.
- Utilization of line tweezers for simultaneous transport and neuronal growth guidance.
- Laser microbeam-assisted microinjection techniques.
Main Results:
- Demonstrated 2D and 3D rotation/orientation of intracellular objects.
- Observed RBC rotation due to shape change in hypertonic buffer, with diagnostic potential for malaria.
- Showcased simultaneous transport of multiple objects using line tweezers.
- Successful induction, enhancement, and guidance of neuronal growth cones.
- Described laser microbeam-assisted drug microinjection into cells.
Conclusions:
- Laser microtools offer versatile capabilities for precise manipulation of biological samples.
- Optical manipulation techniques show potential in disease diagnostics (e.g., malaria) and regenerative medicine.
- Laser-assisted microinjection presents a method for delivering impermeable drugs, with considerations for cell safety.
Related Concept Videos
01:18Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
01:22Overview of Microscopy Techniques
The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...