scholarly journals Live-cell imaging of actin dynamics reveals mechanisms of stereocilia length regulation in the inner ear

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Meghan C. Drummond ◽  
Melanie Barzik ◽  
Jonathan E. Bird ◽  
Duan-Sun Zhang ◽  
Claude P. Lechene ◽  
...  
Keyword(s):  
Inner Ear ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Actin Dynamics ◽  
Length Regulation

Live-Cell Imaging of F-Actin Dynamics During Fertilization in Arabidopsis thaliana

2017 ◽  
pp. 47-54 ◽  
Author(s):  
Daichi Susaki ◽  
Daisuke Maruyama ◽  
Ramesh Yelagandula ◽  
Frederic Berger ◽  
Tomokazu Kawashima
Keyword(s):  
Arabidopsis Thaliana ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Actin Dynamics

scholarly journals F-Actin Dynamics in Neurospora crassa

2010 ◽  
Vol 9 (4) ◽  
pp. 547-557 ◽  
Author(s):  
Adokiye Berepiki ◽  
Alexander Lichius ◽  
Jun-Ya Shoji ◽  
Jens Tilsner ◽  
Nick D. Read
Keyword(s):  
Neurospora Crassa ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Fluorescent Protein ◽  
Live Cell ◽  
Actin Dynamics ◽  
Actin Binding ◽  
Content Type ◽  
Actin Cables ◽  
Germ Tubes

ABSTRACT This study demonstrates the utility of Lifeact for the investigation of actin dynamics in Neurospora crassa and also represents the first report of simultaneous live-cell imaging of the actin and microtubule cytoskeletons in filamentous fungi. Lifeact is a 17-amino-acid peptide derived from the nonessential Saccharomyces cerevisiae actin-binding protein Abp140p. Fused to green fluorescent protein (GFP) or red fluorescent protein (TagRFP), Lifeact allowed live-cell imaging of actin patches, cables, and rings in N. crassa without interfering with cellular functions. Actin cables and patches localized to sites of active growth during the establishment and maintenance of cell polarity in germ tubes and conidial anastomosis tubes (CATs). Recurrent phases of formation and retrograde movement of complex arrays of actin cables were observed at growing tips of germ tubes and CATs. Two populations of actin patches exhibiting slow and fast movement were distinguished, and rapid (1.2 μm/s) saltatory transport of patches along cables was observed. Actin cables accumulated and subsequently condensed into actin rings associated with septum formation. F-actin organization was markedly different in the tip regions of mature hyphae and in germ tubes. Only mature hyphae displayed a subapical collar of actin patches and a concentration of F-actin within the core of the Spitzenkörper. Coexpression of Lifeact-TagRFP and β-tubulin–GFP revealed distinct but interrelated localization patterns of F-actin and microtubules during the initiation and maintenance of tip growth.

scholarly journals Actin chromobody imaging reveals sub-organellar actin dynamics

2019 ◽  
Author(s):  
Cara R. Schiavon ◽  
Tong Zhang ◽  
Bing Zhao ◽  
Leonardo Andrade ◽  
Melissa Wu ◽  
...  
Keyword(s):  
Cell Migration ◽  
Fluorescence Microscopy ◽  
Actin Cytoskeleton ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Fluorescent Protein ◽  
Live Cell ◽  
Actin Dynamics ◽  
Spatiotemporal Resolution ◽  
In Cells

AbstractThe actin cytoskeleton plays multiple critical roles in cells, from cell migration to organelle dynamics. The small and transient actin structures regulating organelle dynamics are difficult to detect with fluorescence microscopy. We developed an approach using fluorescent protein-tagged actin nanobodies targeted to organelle membranes to enable live cell imaging of sub-organellar actin dynamics with unprecedented spatiotemporal resolution. These probes reveal that ER-associated actin drives fission of multiple organelles including mitochondria, endosomes, lysosomes, peroxisomes, and the Golgi.

Live cell imaging of actin dynamics in dexamethasone-treated porcine trabecular meshwork cells

2016 ◽  
Vol 145 ◽  
pp. 393-400 ◽  
Author(s):  
Tomokazu Fujimoto ◽  
Toshihiro Inoue ◽  
Miyuki Inoue-Mochita ◽  
Hidenobu Tanihara
Keyword(s):  
Trabecular Meshwork ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Actin Dynamics ◽  
Trabecular Meshwork Cells

scholarly journals Live-cell imaging of G-actin dynamics using sequential FDAP

2011 ◽  
Vol 1 (5) ◽  
pp. 240-244 ◽  
Author(s):  
Tai Kiuchi ◽  
Tomoaki Nagai ◽  
Kazumasa Ohashi ◽  
Naoki Watanabe ◽  
Kensaku Mizuno
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Actin Dynamics
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