scholarly journals Real‐Time Imaging of Ammonia Release from Single Live Cells via Liquid Crystal Droplets Immobilized on the Cell Membrane

2019 ◽  
Vol 6 (20) ◽  
pp. 1900778 ◽  
Author(s):  
Mashooq Khan ◽  
Weiwei Li ◽  
Sifeng Mao ◽  
Syed Niaz Ali Shah ◽  
Jin‐Ming Lin
Keyword(s):  
Liquid Crystal ◽  
Cell Membrane ◽  
Real Time ◽  
Live Cells ◽  
Real Time Imaging ◽  
Ammonia Release

Characterization and real-time imaging of the FTLD-related protein aggregation induced by amyloidogenic peptides

2015 ◽  
Vol 51 (41) ◽  
pp. 8652-8655 ◽  
Author(s):  
Ruei-Yu He ◽  
Yi-Chen Huang ◽  
Chao-Wei Chiang ◽  
Yu-Ju Tsai ◽  
Ting-Juan Ye ◽  
...  
Keyword(s):  
Protein Aggregation ◽  
Real Time ◽  
Live Cells ◽  
Related Protein ◽  
Amyloid Fibers ◽  
Real Time Imaging ◽  
C Terminus ◽  
Amyloidogenic Peptides

Q/N- and G-rich polypeptides from the TDP-43 C-terminus formed amyloid fibers in vitro and induced the aggregation of the transfected TDP-43-EGFP in live cells.

scholarly journals Real-time imaging of intracellular hydrogen peroxide in pancreatic islets

2016 ◽  
Vol 473 (23) ◽  
pp. 4443-4456 ◽  
Author(s):  
Adam Neal ◽  
Austin Rountree ◽  
Kelly Kernan ◽  
Brian Van Yserloo ◽  
Huiliang Zhang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Real Time ◽  
Live Cells ◽  
H2o2 Production ◽  
Spatiotemporal Resolution ◽  
Intact Cells ◽  
Real Time Imaging ◽  
Mitochondrial Superoxide ◽  
Acute Changes ◽  
Intracellular Hydrogen Peroxide

A real-time method to measure intracellular hydrogen peroxide (H2O2) would be very impactful in characterizing rapid changes that occur in physiologic and pathophysiologic states. Current methods do not provide the sensitivity, specificity and spatiotemporal resolution needed for such experiments on intact cells. We developed the use of HyPer, a genetic indicator for H2O2 that can be expressed in the cytosol (cyto-HyPer) or the mitochondria (mito-HyPer) of live cells. INS-1 cells or islets were permeabilized and the cytosolic HyPer signal was a linear function of extracellular H2O2, allowing fluorescent cyto-HyPer signals to be converted into H2O2 concentrations. Glucose increased cytosolic H2O2, an effect that was suppressed by overexpression of catalase. Large perturbations in pH can influence the HyPer signal, but inclusion of HEPES [4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid] in the perfusate prevented pH changes, but did not affect glucose-induced cyto-HyPer signals, suggesting that this effect is largely pH-independent. Using the assay, two fundamental questions were addressed. Knockdown of superoxide dismutase 2 (SOD2), the mitochondrial form of SOD, completely suppressed glucose-induced H2O2. Furthermore, glucose also induced mitochondrial superoxide and H2O2 production, which preceded the appearance of cytosolic H2O2. Therefore, glucose-induced H2O2 largely originated from mitochondria. Finally, the glucose-induced HyPer signal was less than 1/20th of that induced by toxic levels of H2O2. Overall, the use of HyPer for real-time imaging allowed resolution of acute changes in intracellular levels of H2O2 and will have great utility for islet studies involving mechanisms of H2O2-mediated signaling and oxidative stress.

scholarly journals In vivo selective imaging of metabolic glycosylation with a tetrazine-modified upconversion nanoprobe

RSC Advances ◽  
2020 ◽  
Vol 10 (27) ◽  
pp. 15990-15996 ◽  
Author(s):  
Ruijing Zhang ◽  
Judun Zheng ◽  
Tao Zhang
Keyword(s):  
Cell Membrane ◽  
Real Time ◽  
Real Time Imaging

A novel nanoprobe (UCNP-T) for the specific labeling and real-time imaging of glycans on the cell membrane via ratiometric UCL imaging was developed.

scholarly journals Glutathione Quantification in Live Cells with Real-Time Imaging and Flow Cytometry

2020 ◽  
Vol 1 (3) ◽  
pp. 100170
Author(s):  
Xiqian Jiang ◽  
Jianwei Chen ◽  
Meng C. Wang ◽  
Jin Wang
Keyword(s):  
Flow Cytometry ◽  
Real Time ◽  
Live Cells ◽  
Real Time Imaging

Real-time imaging of apoptotic cell-membrane changes at the single-cell level in the beating murine heart

2001 ◽  
Vol 7 (12) ◽  
pp. 1352-1355 ◽  
Author(s):  
E.A. Dumont ◽  
C.P.M. Reutelingsperger ◽  
J.F.M. Smits ◽  
M.J.A.P. Daemen ◽  
P.A.F. Doevendans ◽  
...  
Keyword(s):  
Cell Membrane ◽  
Single Cell ◽  
Real Time ◽  
Apoptotic Cell ◽  
Single Cell Level ◽  
Cell Level ◽  
Real Time Imaging ◽  
Membrane Changes

Integrated microscopy for real-time imaging of mechanotransduction studies in live cells

2009 ◽  
Vol 14 (3) ◽  
pp. 034024 ◽  
Author(s):  
Andreea Trache ◽  
Soon-Mi Lim
Keyword(s):  
Real Time ◽  
Live Cells ◽  
Real Time Imaging
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