An open-hardware platform for optogenetics and photobiology.

Area of Science:

• Optogenetics
• Photobiology
• Molecular Biology

Background:

• Optogenetics offers precise control of biological processes using light and photoreceptors.
• Widespread adoption beyond neuroscience is hindered by a lack of accessible hardware.
• Existing optogenetic tools often require complex and expensive equipment.

Purpose of the Study:

• To engineer an affordable, user-friendly, and flexible hardware platform for optogenetics.
• To enable precise control of light delivery for various biological applications.
• To reduce the technical and financial barriers for researchers entering optogenetics and photobiology.

Main Methods:

• Development of the Light Plate Apparatus (LPA) for 24-well plates.
• Integration of two independent, tunable light sources (310-1550 nm) with millisecond resolution.
• Utilization of an intuitive web-based programming tool (Iris) for signal control.
• Assembly and calibration achievable by non-experts within a day with components under $400.

Main Results:

• The LPA successfully delivered precise light signals to control gene expression in bacteria, yeast, and mammalian cells.
• Demonstrated simplified entrainment of cyanobacterial circadian rhythms using the LPA.
• Validated the device's performance with blue, green, and red light-responsive optogenetic tools.
• Confirmed the low cost and ease of assembly for the LPA.

Conclusions:

• The Light Plate Apparatus (LPA) significantly democratizes access to optogenetics and photobiology research.
• The device provides a flexible and cost-effective solution for precise light-based biological control.
• The LPA empowers researchers across various disciplines to implement advanced optogenetic experiments.