Biologically Active Micropatterns of Biomolecules and Living Matter Using Microbubble Lithography.

Area of Science:

• Biotechnology
• Microfluidics
• Cellular Engineering

Background:

• In situ patterning of biomolecules and organisms while maintaining biological activity is challenging due to thermal stress.
• Existing top-down methods cause thermal stress, while bottom-up approaches lack control and are time-consuming.

Purpose of the Study:

• To develop a novel method for real-time, in situ patterning of biomolecules and living organisms.
• To overcome the limitations of existing patterning techniques by minimizing thermal stress and improving control.

Main Methods:

• Utilizing a microbubble generated and manipulated by optical tweezers (microbubble lithography).
• Employing self-assembly principles for continuous microscopic structure formation.
• Demonstrating the biological activity of patterned materials through short, high-temperature exposures.

Main Results:

• Successfully patterned microorganisms like Escherichia coli, Lactococcus lactis, and influenza A virus.
• Patterned reporter proteins, including green fluorescent protein (GFP), on functionalized substrates.
• Achieved high signal-to-noise ratio and selectivity in the patterned structures.

Conclusions:

• Microbubble lithography offers a rapid, in situ, and parallelizable method for patterning biological materials.
• The technique preserves biological activity, enabling applications in diagnostics and bioelectronics.
• This approach holds potential for rapid, multiplexed pathogen detection and the development of bioelectronic devices.