Three-dimensional structured illumination microscopy with enhanced axial resolution.

Three-dimensional structured illumination microscopy with enhanced axial resolution.
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DOI:
10.1038/s41587-022-01651-1
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发表时间:
2023-09
影响因子:
46.9
通讯作者:
Shroff, Hari
Shroff, Hari
中科院分区:
工程技术1区
文献类型:
--
作者:
Li, Xuesong;Wu, Yicong;Su, Yijun;Rey-Suarez, Ivan;Matthaeus, Claudia;Updegrove, Taylor B. B.;Wei, Zhuang;Zhang, Lixia;Sasaki, Hideki;Li, Yue;Guo, Min;Giannini, John P. P.;Vishwasrao, Harshad D. D.;Chen, Jiji;Lee, Shih-Jong J.;Shao, Lin;Liu, Huafeng;Ramamurthi, Kumaran S. S.;Taraska, Justin W. W.;Upadhyaya, Arpita;La Riviere, Patrick;Shroff, Hari

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The axial resolution of three-dimensional structured illumination microscopy (3D SIM) is limited to ∼300 nm. Here we present two distinct, complementary methods to improve axial resolution in 3D SIM with minimal or no modification to the optical system. We show that placing a mirror directly opposite the sample enables four-beam interference with higher spatial frequency content than 3D SIM illumination, offering near-isotropic imaging with ∼120-nm lateral and 160-nm axial resolution. We also developed a deep learning method achieving ∼120-nm isotropic resolution. This method can be combined with denoising to facilitate volumetric imaging spanning dozens of timepoints. We demonstrate the potential of these advances by imaging a variety of cellular samples, delineating the nanoscale distribution of vimentin and microtubule filaments, observing the relative positions of caveolar coat proteins and lysosomal markers and visualizing cytoskeletal dynamics within T cells in the early stages of immune synapse formation. Enhanced axial resolution for 3D SIM is achieved with deep learning or four-beam interference.
使用超分辨率光显微镜在纳米尺度上测量复制结构。
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