Challenges of Using Expansion Microscopy for Super-resolved Imaging of Cellular Organelles.
Challenges of Using Expansion Microscopy for Super-resolved Imaging of Cellular Organelles.
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DOI:
10.1002/cbic.202000571
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发表时间:
2021-02-15
期刊:
影响因子:
--
通讯作者:
Reglinski K
中科院分区:
文献类型:
--
作者:
Büttner M;Lagerholm CB;Waithe D;Galiani S;Schliebs W;Erdmann R;Eggeling C;Reglinski K
Expansion microscopy (ExM) has been successfully used to improve the spatial resolution when imaging tissues by optical microscopy. In ExM, proteins of a fixed sample are crosslinked to a swellable acrylamide gel, which expands when incubated in water. Therefore, ExM allows enlarged subcellular structures to be resolved that would otherwise be hidden to standard confocal microscopy. Herein, we aim to validate ExM for the study of peroxisomes, mitochondria, nuclei and the plasma membrane. Upon comparison of the expansion factors of these cellular compartments in HEK293 cells within the same gel, we found significant differences, of a factor of above 2, in expansion factors. For peroxisomes, the expansion factor differed even between peroxisomal membrane and matrix marker; this underlines the need for a thorough validation of expansion factors of this powerful technique. We further give an overview of possible quantification methods for the determination of expansion factors of intracellular organelles, and we highlight some potentials and challenges. In Expansion Microscopy (ExM) subcellular structures are imaged in isotropically expanded fixed samples, consequently allowing to resolve enlarged subcellular structures, otherwise hidden to standard microscopy. Upon comparison of the expansion factors of different cellular compartments in cells within the same gel, we found significant differences in expansion factors of a factor of above 2.
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DOI:
10.1126/science.1260088
发表时间:
2015-01-30
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Chen F;Tillberg PW;Boyden ES
通讯作者:
Boyden ES
DOI:
10.1074/jbc.m116.734038
发表时间:
2016-08-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Galiani S;Waithe D;Reglinski K;Cruz-Zaragoza LD;Garcia E;Clausen MP;Schliebs W;Erdmann R;Eggeling C
通讯作者:
Eggeling C
影响因子:
16
作者:
Stanley, Will A.;Filipp, Fabian V.;Wilmanns, Matthias
通讯作者:
Wilmanns, Matthias
影响因子:
17.1
作者:
Gao, Mengfei;Maraspini, Riccardo;Ewers, Helge
通讯作者:
Ewers, Helge
影响因子:
2.3
作者:
Pernal, Sebastian P.;Liyanaarachchi, Asiri;Jena, Bhanu P.
通讯作者:
Jena, Bhanu P.