メタラーニングを活用した反射格子ライトシート顕微鏡を開発(Dong Li’s team and collaborators develop meta-learning-empowered reflective lattice light-sheet virtual structured illumination microscopy)

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2025-05-28 清華大学

メタラーニングを活用した反射格子ライトシート顕微鏡を開発(Dong Li’s team and collaborators develop meta-learning-empowered reflective lattice light-sheet virtual structured illumination microscopy)Fig. 1 Demonstration of rapid five-dimensional super-resolution live-cell imaging using Meta-rLLS-VSIM

清華大学の研究チームは、新しい超解像顕微鏡技術「Meta-rLLS-VSIM」を開発し、『Nature Methods』に成果を発表しました。この技術は既存のLLS-SIMの限界を克服し、仮想構造化照明やミラー強化型検出、ベイズ融合を組み合わせて、X-Y-Z方向で等方的な高解像度(横120nm、軸160nm)を実現します。さらに、メタラーニングによりAIモデルを3分で最適化可能。厚みある試料の長時間5次元観察に成功し、細胞膜融合や成長過程の可視化を可能にしました。

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高速・長時間・ほぼ等方的な細胞内イメージングのための高速適応型超解像格子ライトシート顕微鏡法 Fast-adaptive super-resolution lattice light-sheet microscopy for rapid, long-term, near-isotropic subcellular imaging

Chang Qiao,Ziwei Li,Zongfa Wang,Yuhuan Lin,Chong Liu,Siwei Zhang,Yong Liu,Yun Feng,Xiaoyu Yang,Wenfeng Fu,Xue Dong,Jiabao Guo,Wencong Xu,Xinyu Wang,Tao Jiang,Quan Meng,Qinghua Wang,Qionghai Dai & Dong Li
Nature Methods  Published:29 April 2025
DOI:https://doi.org/10.1038/s41592-025-02678-3

Abstract

Lattice light-sheet microscopy provides a crucial observation window into intra- and intercellular physiology of living specimens but at the diffraction-limited resolution or anisotropic super-resolution with structured illumination. Here we present meta-learning-empowered reflective lattice light-sheet virtual structured illumination microscopy (Meta-rLLS-VSIM), which upgrades lattice light-sheet microscopy to a near-isotropic super resolution of ~120 nm laterally and ~160 nm axially without modifications of the core optical system or loss of other live-cell imaging metrics. Moreover, we devised an adaptive online training approach by synergizing the front-end imaging system and back-end meta-learning framework, which alleviated the demand for training data by tenfold and reduced the total time for data acquisition and model training down to tens of seconds. We demonstrate the versatile functionalities of Meta-rLLS-VSIM by imaging a variety of bioprocesses with ultrahigh spatiotemporal resolution for hundreds of multicolor volumes, delineating the nanoscale distributions, dynamics and interaction patterns of multiple organelles in embryos and eukaryotic cells.

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