scholarly journals Dynamic Organization of Chromatin Domains Revealed by Super-Resolution Live-Cell Imaging

2017 ◽  
Vol 67 (2) ◽  
pp. 282-293.e7 ◽  
Author(s):  
Tadasu Nozaki ◽  
Ryosuke Imai ◽  
Mai Tanbo ◽  
Ryosuke Nagashima ◽  
Sachiko Tamura ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Chromatin Domains ◽  
Dynamic Organization

scholarly journals C. elegans neurons have functional dendritic spines

eLife ◽  
2019 ◽  
Vol 8 ◽  
Author(s):  
Andrea Cuentas-Condori ◽  
Ben Mulcahy ◽  
Siwei He ◽  
Sierra Palumbos ◽  
Mei Zhen ◽  
...  
Keyword(s):  
Motor Neurons ◽  
Dendritic Spines ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Model Organisms ◽  
Spine Density ◽  
C Elegans ◽  
Spine Function

Dendritic spines are specialized postsynaptic structures that transduce presynaptic signals, are regulated by neural activity and correlated with learning and memory. Most studies of spine function have focused on the mammalian nervous system. However, spine-like protrusions have been reported in C. elegans (Philbrook et al., 2018), suggesting that the experimental advantages of smaller model organisms could be exploited to study the biology of dendritic spines. Here, we used super-resolution microscopy, electron microscopy, live-cell imaging and genetics to show that C. elegans motor neurons have functional dendritic spines that: (1) are structurally defined by a dynamic actin cytoskeleton; (2) appose presynaptic dense projections; (3) localize ER and ribosomes; (4) display calcium transients triggered by presynaptic activity and propagated by internal Ca++ stores; (5) respond to activity-dependent signals that regulate spine density. These studies provide a solid foundation for a new experimental paradigm that exploits the power of C. elegans genetics and live-cell imaging for fundamental studies of dendritic spine morphogenesis and function.

scholarly journals Malic Acid Carbon Dots: From Super-resolution Live-Cell Imaging to Highly Efficient Separation

ACS Nano ◽  
2018 ◽  
Vol 12 (6) ◽  
pp. 5741-5752 ◽  
Author(s):  
Bo Zhi ◽  
Yi Cui ◽  
Shengyang Wang ◽  
Benjamin P. Frank ◽  
Denise N. Williams ◽  
...  
Keyword(s):  
Malic Acid ◽  
Carbon Dots ◽  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Efficient Separation ◽  
Highly Efficient

scholarly journals Customizable live-cell imaging chambers for multimodal and multiplex fluorescence microscopy

2020 ◽  
Vol 98 (5) ◽  
pp. 612-623
Author(s):  
Adam Tepperman ◽  
David Jiao Zheng ◽  
Maria Abou Taka ◽  
Angela Vrieze ◽  
Austin Le Lam ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Imaging Modalities ◽  
Experimental Conditions ◽  
Microscopy Imaging ◽  
Glass Coverslip ◽  
Multiple Imaging ◽  
Microscopy Techniques

Using multiple imaging modalities while performing independent experiments in parallel can greatly enhance the throughput of microscopy-based research, but requires the provision of appropriate experimental conditions in a format that meets the optical requirements of the microscope. Although customized imaging chambers can meet these challenges, the difficulty of manufacturing custom chambers and the relatively high cost and design inflexibility of commercial chambers has limited the adoption of this approach. Herein, we demonstrate the use of 3D printing to produce inexpensive, customized, live-cell imaging chambers that are compatible with a range of imaging modalities, including super-resolution microscopy. In this approach, biocompatible plastics are used to print imaging chambers designed to meet the specific needs of an experiment, followed by adhesion of the printed chamber to a glass coverslip, producing a chamber that is impermeant to liquids and that supports the growth and imaging of cells over multiple days. This approach can also be used to produce moulds for casting microfluidic devices made of polydimethylsiloxane. The utility of these chambers is demonstrated using designs for multiplex microscopy, imaging under shear, chemotaxis, and general cellular imaging. Together, this approach represents an inexpensive yet highly customizable approach for producing imaging chambers that are compatible with modern microscopy techniques.

A millisecond structured illumination microscope for super-resolution live cell imaging

2020 ◽  
Vol 13 (4) ◽  
pp. 045002
Author(s):  
Tomu Suzuki ◽  
Shinji Kajimoto ◽  
Narufumi Kitamura ◽  
Mayumi Takano-Kasuya ◽  
Naoko Furusawa ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Structured Illumination

scholarly journals Advances in High-Speed Structured Illumination Microscopy

2021 ◽  
Vol 9 ◽  
Author(s):  
Tianyu Zhao ◽  
Zhaojun Wang ◽  
Tongsheng Chen ◽  
Ming Lei ◽  
Baoli Yao ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
High Speed ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell ◽  
Structured Illumination ◽  
Structured Illumination Microscopy ◽  
Light Power ◽  
Recent Developments ◽  
Super Resolution Microscopy

Super-resolution microscopy surpasses the diffraction limit to enable the observation of the fine details in sub-cellular structures and their dynamics in diverse biological processes within living cells. Structured illumination microscopy (SIM) uses a relatively low illumination light power compared with other super-resolution microscopies and has great potential to meet the demands of live-cell imaging. However, the imaging acquisition and reconstruction speeds limit its further applications. In this article, recent developments all targeted at improving the overall speed of SIM are reviewed. These comprise both hardware and software improvements, which include a reduction in the number of raw images, GPU acceleration, deep learning and the spatial domain reconstruction. We also discuss the application of these developments in live-cell imaging.

Waveguide chip coupled with microfluidics enables super-resolution live-cell imaging

2020 ◽  
Author(s):  
Matteo Boninsegna ◽  
Nikhil Jayakumar ◽  
Firehun Tsige Dullo ◽  
Peter A. G. McCourt ◽  
Thomas Huser ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Super Resolution ◽  
Live Cell

scholarly journals Complementarity of PALM and SOFI for super-resolution live-cell imaging of focal adhesions

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Hendrik Deschout ◽  
Tomas Lukes ◽  
Azat Sharipov ◽  
Daniel Szlag ◽  
Lely Feletti ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Focal Adhesions ◽  
Super Resolution ◽  
Live Cell
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