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Updated: May 20, 2026

Spatiotemporal Control of Protein Activity through Optogenetic Allosteric Regulation
Published on: October 4, 2024
Live imaging using adaptive optics with fluorescent protein guide-stars.
Xiaodong Tao1, Justin Crest, Shaila Kotadia
1W.M. Keck Center for Adaptive Optical Microscopy, Jack Baskin School of Engineering, University of California, Santa Cruz, California 95064, USA. taoxd@soe.ucsc.edu
We developed an adaptive optical microscope using fluorescent guide-stars to correct aberrations in live imaging. This technique achieves near diffraction-limited resolution for dynamic imaging of biological samples like Drosophila embryos.
Area of Science:
- Biomedical Optics
- Microscopy
- Developmental Biology
Background:
- Live imaging resolution is limited by optical aberrations from inhomogeneous refractive indices.
- Dynamic imaging requires correction of spatially and temporally dependent aberrations.
Purpose of the Study:
- To introduce an adaptive optical microscope for live imaging.
- To demonstrate aberration correction for high-resolution imaging of live samples.
Main Methods:
- Utilized a Shack-Hartmann wavefront sensor for direct wavefront sensing.
- Employed fluorescent protein guide-stars for aberration correction.
- Imaged Drosophila embryos, including GFP-polo labeled centrosomes.
Main Results:
- Achieved near diffraction-limited images of medial sections in large Drosophila embryos.
- Enabled clear observation of GFP-polo labeled centrosomes, previously unresolvable.
- Acquired four-dimensional (4D) time-lapse images by correcting dynamic aberrations.
Conclusions:
- Adaptive optics with direct wavefront sensing effectively corrects aberrations in live imaging.
- Fluorescent proteins like GFP-polo, Polo, and Cnn serve as effective biological guide-stars.
- The developed microscope significantly enhances resolution for dynamic biological imaging.
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