Multi-resolution correlative focused ion beam scanning electron microscopy: applications to cell biology.

Multi-resolution correlative focused ion beam scanning electron microscopy: applications to cell biology.
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DOI:
10.1016/j.jsb.2013.11.008
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发表时间:
2014-03
影响因子:
3
通讯作者:
Subramaniam, Sriram
Subramaniam, Sriram
中科院分区:
生物学3区
文献类型:
--
作者:
Narayan, Kedar;Danielson, Cindy M.;Lagarec, Ken;Lowekamp, Bradley C.;Coffman, Phil;Laquerre, Alexandre;Phaneuf, Michael W.;Hope, Thomas J.;Subramaniam, Sriram

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Efficient correlative imaging of small targets within large fields is a central problem in cell biology. Here, we demonstrate a series of technical advances in focused ion beam scanning electron microscopy (FIB-SEM) to address this issue. We increase the speed, robustness and automation of the process, and achieve consistent z slice thickness of ~3 nm. We introduce “keyframe imaging” to simultaneously image large fields of view and obtain high-resolution 3D images of targeted sub-volumes. We apply these advances to image post-fusion cytoplasmic intermediates of the HIV core. Using fluorescently labeled cell membranes, proteins and HIV cores, we first produce a “target map” of an HIV infected cell by fluorescence microscopy. We then generate a correlated 3D EM volume of the entire cell as well as high-resolution 3D images of individual HIV cores, achieving correlative imaging across a volume scale of 109 in a single automated experimental run.
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