Abstract：
:In eukaryotic cells, organelles and the cytoskeleton undergo highly dynamic yet organized interactions capable of orchestrating complex cellular functions. Visualizing these interactions requires noninvasive, long-duration imaging of the intracellular environment at high spatiotemporal resolution and low background. To achieve these normally opposing goals, we developed grazing incidence structured illumination microscopy (GI-SIM) that is capable of imaging dynamic events near the basal cell cortex at 97-nm resolution and 266 frames/s over thousands of time points. We employed multi-color GI-SIM to characterize the fast dynamic interactions of diverse organelles and the cytoskeleton, shedding new light on the complex behaviors of these structures. Precise measurements of microtubule growth or shrinkage events helped distinguish among models of microtubule dynamic instability. Analysis of endoplasmic reticulum (ER) interactions with other organelles or microtubules uncovered new ER remodeling mechanisms, such as hitchhiking of the ER on motile organelles. Finally, ER-mitochondria contact sites were found to promote both mitochondrial fission and fusion.
journal_name
Celljournal_title
Cellauthors
Guo Y,Li D,Zhang S,Yang Y,Liu JJ,Wang X,Liu C,Milkie DE,Moore RP,Tulu US,Kiehart DP,Hu J,Lippincott-Schwartz J,Betzig E,Li Ddoi
10.1016/j.cell.2018.09.057subject
Has Abstractpub_date
2018-11-15 00:00:00pages
1430-1442.e17issue
5eissn
0092-8674issn
1097-4172pii
S0092-8674(18)31308-4journal_volume
175pub_type
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