Robust adaptive optics for localization microscopy deep in complex tissue

Marijn E. Siemons, Naomi A. K. Hanemaaijer, Maarten H. P. Kole and Lukas C. Kapitein ()
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Marijn E. Siemons: Utrecht University
Naomi A. K. Hanemaaijer: Utrecht University
Maarten H. P. Kole: Utrecht University
Lukas C. Kapitein: Utrecht University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Single-Molecule Localization Microscopy (SMLM) provides the ability to determine molecular organizations in cells at nanoscale resolution, but in complex biological tissues, where sample-induced aberrations hamper detection and localization, its application remains a challenge. Various adaptive optics approaches have been proposed to overcome these issues, but the exact performance of these methods has not been consistently established. Here we systematically compare the performance of existing methods using both simulations and experiments with standardized samples and find that they often provide limited correction or even introduce additional errors. Careful analysis of the reasons that underlie this limited success enabled us to develop an improved method, termed REALM (Robust and Effective Adaptive Optics in Localization Microscopy), which corrects aberrations of up to 1 rad RMS using 297 frames of blinking molecules to improve single-molecule localization. After its quantitative validation, we demonstrate that REALM enables to resolve the periodic organization of cytoskeletal spectrin of the axon initial segment even at 50 μm depth in brain tissue.

Date: 2021
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DOI: 10.1038/s41467-021-23647-2

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