Near-isotropic 3D optical nanoscopy with photon-limited chromophores.

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Proceedings of the National Academy of Sciences of the United States of America. 2010 Jun 1;107(22):10068-73. doi: 10.1073/pnas.1004899107

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Near-isotropic 3D optical nanoscopy with photon-limited chromophores. Looger Lab

Tang J, Akerboom J, Vaziri A, Looger LL, Shank CV

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Abstract

Imaging approaches based on single molecule localization break the diffraction barrier of conventional fluorescence microscopy, allowing for bioimaging with nanometer resolution. It remains a challenge, however, to precisely localize photon-limited single molecules in 3D. We have developed a new localization-based imaging technique achieving almost isotropic subdiffraction resolution in 3D. A tilted mirror is used to generate a side view in addition to the front view of activated single emitters, allowing their 3D localization to be precisely determined for superresolution imaging. Because both front and side views are in focus, this method is able to efficiently collect emitted photons. The technique is simple to implement on a commercial fluorescence microscope, and especially suitable for biological samples with photon-limited chromophores such as endogenously expressed photoactivatable fluorescent proteins. Moreover, this method is relatively resistant to optical aberration, as it requires only centroid determination for localization analysis. Here we demonstrate the application of this method to 3D imaging of bacterial protein distribution and neuron dendritic morphology with subdiffraction resolution.

PMID: 20472826 [PubMed - indexed for MEDLINE]

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Near-isotropic 3D optical nanoscopy with photon-limited chromophores.

Abstract

PMID: 20472826 [PubMed - indexed for MEDLINE]

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