New software for three-dimensional visualization and calculation of volume of living cells

2021 ◽  
pp. 1-9
Author(s):  
Maja Ullrich ◽  
Niklas Ullrich ◽  
Constanze Wiek ◽  
Jörg Schipper ◽  
Mathias Getzlaff ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Living Cells

Autonomous Operation of 3D DNA Walkers in Living Cells for MicroRNA Imaging

Nanoscale ◽  
2021 ◽  
Author(s):  
Hui Hu ◽  
Fu Zhou ◽  
Baojuan Wang ◽  
Xin Chang ◽  
Tianyue Dai ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Three Dimensional ◽  
Living Cells ◽  
Autonomous Operation ◽  
Dna Walkers

Three dimensional (3D) DNA walkers possesses the potential as ideal candidates for signal transduction and amplification in bioassays. However, intracellularly autonomous operation of 3D DNA walkers is still limitedly implemented...

scholarly journals 2P-022 Investigating protein three-dimensional structures inside living cells by in-cell NMR spectroscopy(The 46th Annual Meeting of the Biophysical Society of Japan)

2008 ◽  
Vol 48 (supplement) ◽  
pp. S78
Author(s):  
Junpei Hamatsu ◽  
Daisuke Sakakibara ◽  
Atsuko Sasaki ◽  
Teppei Ikeya ◽  
Masaki Mishima ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Annual Meeting ◽  
Three Dimensional ◽  
Living Cells ◽  
Biophysical Society

New method of holographic three-dimensional tracking of living cells exploiting their morphological properties

2013 ◽  
Author(s):  
Pasquale Memmolo ◽  
Maria Iannone ◽  
Maurizio Ventre ◽  
Paolo Antonio Netti ◽  
Andrea Finizio ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Living Cells ◽  
New Method ◽  
Morphological Properties

scholarly journals Developmental enhancers and chromosome topology

Science ◽  
2018 ◽  
Vol 361 (6409) ◽  
pp. 1341-1345 ◽  
Author(s):  
Eileen E. M. Furlong ◽  
Michael Levine
Keyword(s):  
Three Dimensional ◽  
Cell Types ◽  
Living Cells ◽  
Specific Cell ◽  
Transcriptional Dynamics ◽  
Spatiotemporal Expression ◽  
Chromosome Topology ◽  
Classical Models ◽  
And Function ◽  
Target Promoters

Developmental enhancers mediate on/off patterns of gene expression in specific cell types at particular stages during metazoan embryogenesis. They typically integrate multiple signals and regulatory determinants to achieve precise spatiotemporal expression. Such enhancers can map quite far—one megabase or more—from the genes they regulate. How remote enhancers relay regulatory information to their target promoters is one of the central mysteries of genome organization and function. A variety of contrasting mechanisms have been proposed over the years, including enhancer tracking, linking, looping, and mobilization to transcription factories. We argue that extreme versions of these mechanisms cannot account for the transcriptional dynamics and precision seen in living cells, tissues, and embryos. We describe emerging evidence for dynamic three-dimensional hubs that combine different elements of the classical models.

scholarly journals Label-free prediction of three-dimensional fluorescence images from transmitted light microscopy

2018 ◽  
Author(s):  
Chawin Ounkomol ◽  
Sharmishtaa Seshamani ◽  
Mary M. Maleckar ◽  
Forrest Collman ◽  
Gregory R. Johnson
Keyword(s):  
Fluorescence Microscopy ◽  
Three Dimensional ◽  
Living Cells ◽  
Transmitted Light ◽  
Integrated Systems ◽  
Label Free ◽  
Subcellular Structure ◽  
Modern Biology ◽  
Transmitted Light Microscopy ◽  
Fluorescence Images

Understanding living cells as integrated systems, a challenge central to modern biology, is complicated by limitations of available imaging methods. While fluorescence microscopy can resolve subcellular structure in living cells, it is expensive, slow, and damaging to cells. Here, we present a label-free method for predicting 3D fluorescence directly from transmitted light images and demonstrate that it can be used to generate multi-structure, integrated images.

scholarly journals Super-Resolution Imaging by Dual Iterative Structured Illumination Microscopy

2021 ◽  
Author(s):  
Anna Loeschberger ◽  
Yauheni Novikau ◽  
Ralf Netz ◽  
Marie-Christin Spindler ◽  
Ricardo Benavente ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Brain Slices ◽  
Super Resolution ◽  
Reconstruction Algorithm ◽  
Living Cells ◽  
Structured Illumination ◽  
Structured Illumination Microscopy ◽  
Spatiotemporal Resolution ◽  
Coated Pits ◽  
Resolution Imaging

Three-dimensional (3D) multicolor super-resolution imaging in the 50-100 nm range in fixed and living cells remains challenging. We extend the resolution of structured illumination microscopy (SIM) by an improved nonlinear iterative reconstruction algorithm that enables 3D multicolor imaging with improved spatiotemporal resolution at low illumination intensities. We demonstrate the performance of dual iterative SIM (diSIM) imaging cellular structures in fixed cells including synaptonemal complexes, clathrin coated pits and the actin cytoskeleton with lateral resolutions of 60-100 nm with standard fluorophores. Furthermore, we visualize dendritic spines in 70 micrometer thick brain slices with an axial resolution < 200 nm. Finally, we image dynamics of the endoplasmatic reticulum and microtubules in living cells with up to 255 frames/s.

scholarly journals Transport and localization of exogenous myelin basic protein mRNA microinjected into oligodendrocytes.

1993 ◽  
Vol 123 (2) ◽  
pp. 431-441 ◽  
Author(s):  
K Ainger ◽  
D Avossa ◽  
F Morgan ◽  
S J Hill ◽  
C Barry ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Living Cells ◽  
Branch Points ◽  
Rna Granules ◽  
Intracellular Movement ◽  
Directional Movement ◽  
Ionic Detergent ◽  
Mrna Granules

We have studied transport and localization of MBP mRNA in oligodendrocytes in culture by microinjecting labeled mRNA into living cells and analyzing the intracellular distribution of the injected RNA by confocal microscopy. Injected mRNA initially appears dispersed in the perikaryon. Within minutes, the RNA forms granules which, in the case of MBP mRNA, are transported down the processes to the periphery of the cell where the distribution again becomes dispersed. In situ hybridization shows that endogenous MBP mRNA in oligodendrocytes also appears as granules in the perikaryon and processes and dispersed in the peripheral membranes. The granules are not released by extraction with non-ionic detergent, indicating that they are associated with the cytoskeletal matrix. Three dimensional visualization indicates that MBP mRNA granules are often aligned in tracks along microtubules traversing the cytoplasm and processes. Several distinct patterns of granule movement are observed. Granules in the processes undergo sustained directional movement with a velocity of approximately 0.2 micron/s. Granules at branch points undergo oscillatory motion with a mean displacement of 0.1 micron/s. Granules in the periphery of the cell circulate randomly with a mean displacement of approximately 1 micron/s. The results are discussed in terms of a multi-step pathway for transport and localization of MBP mRNA in oligodendrocytes. This work represents the first characterization of intracellular movement of mRNA in living cells, and the first description of the role of RNA granules in transport and localization of mRNA in cells.

Associated Anisotropy of intrinsic NAD(P)H for monitoring changes in the metabolic activities of breast cancer cells in three-dimensional collagen matrix

2021 ◽  
Author(s):  
Anh Cong ◽  
Rafaela M. L. Pimenta ◽  
Jon Holy ◽  
Ahmed A Heikal
Keyword(s):  
Breast Cancer ◽  
Cell Culture ◽  
Breast Cancer Cells ◽  
Monolayer Culture ◽  
Three Dimensional ◽  
Collagen Matrix ◽  
Living Cells ◽  
Two Dimensional ◽  
Metabolic Activities

The majority of in vitro studies of living cells are routinely conducted in a two-dimensional (2D) monolayer culture. Recent studies, however, suggest that 2D cell culture promotes specific types of...

scholarly journals Extended Dual-Focus Microscopy for Ratiometric-Based 3D Movement Tracking

2020 ◽  
Vol 10 (18) ◽  
pp. 6243
Author(s):  
Seohyun Lee ◽  
Hyuno Kim ◽  
Hideo Higuchi
Keyword(s):  
Drug Delivery ◽  
High Resolution ◽  
Optical Axis ◽  
Three Dimensional ◽  
Virus Transmission ◽  
Living Cells ◽  
Depth Of Field ◽  
Objective Lens ◽  
Accurate Localization ◽  
Movement Tracking

Imaging the three-dimensional movement of small organelles in living cells can provide key information for the dynamics of drug delivery and virus transmission in biomedical disciplines. To stably monitor such intracellular motion using microscope, long depth of field along optical axis and accurate three-dimensional tracking are simultaneously required. In the present work, we suggest an extended dual-focus optics microscopy system by combining a bifocal plane imaging scheme and objective lens oscillation, which enables accurate localization for a long axial range. The proposed system exploits high-resolution functionality by concatenating partial calibration result acquired each axial imaging level, maintaining the practical advantages of ratiometric method.

Intracellular Nonenzymatic In Situ Growth of Three-Dimensional DNA Nanostructures for Imaging Specific Biomolecules in Living Cells

ACS Nano ◽  
2020 ◽  
Vol 14 (8) ◽  
pp. 9572-9584
Author(s):  
Ran Liu ◽  
Songbai Zhang ◽  
Ting-Ting Zheng ◽  
Yan-Ru Chen ◽  
Jing-Ting Wu ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Living Cells ◽  
In Situ Growth ◽  
Dna Nanostructures
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