Three-dimensional multi-target super-resolution microscopy of cells using Metal-Induced Energy Transfer and DNA-PAINT

Oleksiievets, N.; Mougios, N.; Jans, D. C.; Hauke, L.; Thiele, J. C.; Basak, S.; Jakobs, S.; Opazo, F.; Enderlein, J.; Tsukanov, R.

doi:10.1101/2024.04.02.587536

bioRxiv · 10.1101/2024.04.02.587536

Three-dimensional multi-target super-resolution microscopy of cells using Metal-Induced Energy Transfer and DNA-PAINT

Oleksiievets, N.·Mougios, N.·Jans, D. C.·Hauke, L.·Thiele, J. C.·Basak, S.·Jakobs, S.·Opazo, F.·Enderlein, J.·Tsukanov, R.

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Abstract

AbsrtactAchieving nanometer precision in 3D remains a major challenge in super-resolution microscopy. DNA-PAINT offers excellent lateral resolution and versatile multiplexing, but its axial localization precision is typically 3-5 times poorer, limiting quantitative 3D imaging. Here, we present MIET-PAINT, which combines DNA-PAINT with Metal-Induced Energy Transfer (MIET) to overcome this limitation. We implement MIET-PAINT on both wide-field fluorescence lifetime and confocal TCSPC platforms. Wide-field MIET-PAINT enables robust, multiplexed imaging of focal adhesion proteins and actin in fixed cells. To address the lateral resolution limits of lifetime cameras, we further developed confocal MIET-PAINT, which leverages optical background rejection and high-efficiency SPAD detection. This modality achieves [~]12 nm lateral precision and resolves the 3D architecture of microtubules, vimentin, and actin with high fidelity. MIET-PAINT thus unites nanometer-scale axial accuracy with the multiplexing versatility of DNA-PAINT, establishing a powerful tool for quantitative 3D cell biology.

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Oleksiievets, N., Mougios, N., Jans, D. C., Hauke, L., Thiele, J. C., Basak, S., Jakobs, S., Opazo, F., Enderlein, J., Tsukanov, R.. 2024-04-03. Three-dimensional multi-target super-resolution microscopy of cells using Metal-Induced Energy Transfer and DNA-PAINT. https://doi.org/10.1101/2024.04.02.587536

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