X10 expansion microscopy enables 25-nm resolution on conventional microscopes.

X10 expansion microscopy enables 25-nm resolution on conventional microscopes.
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DOI:
10.15252/embr.201845836
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发表时间:
2018-09
期刊:
影响因子:
7.7
通讯作者:
Rizzoli SO
Rizzoli SO
中科院分区:
生物学2区
文献类型:
--
作者:
Truckenbrodt S;Maidorn M;Crzan D;Wildhagen H;Kabatas S;Rizzoli SO

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Expansion microscopy is a recently introduced imaging technique that achieves super‐resolution through physically expanding the specimen by ~4×, after embedding into a swellable gel. The resolution attained is, correspondingly, approximately fourfold better than the diffraction limit, or ~70 nm. This is a major improvement over conventional microscopy, but still lags behind modern STED or STORM setups, whose resolution can reach 20–30 nm. We addressed this issue here by introducing an improved gel recipe that enables an expansion factor of ~10× in each dimension, which corresponds to an expansion of the sample volume by more than 1,000‐fold. Our protocol, which we termed X10 microscopy, achieves a resolution of 25–30 nm on conventional epifluorescence microscopes. X10 provides multi‐color images similar or even superior to those produced with more challenging methods, such as STED, STORM, and iterative expansion microscopy (iExM). X10 is therefore the cheapest and easiest option for high‐quality super‐resolution imaging currently available. X10 should be usable in any laboratory, irrespective of the machinery owned or of the technical knowledge.
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