scholarly journals Ratiometric fluorescent pH-sensitive polymers for high-throughput monitoring of extracellular pH

RSC Advances ◽  
2016 ◽  
Vol 6 (52) ◽  
pp. 46134-46142 ◽  
Author(s):  
Liqiang Zhang ◽  
Fengyu Su ◽  
Xiangxing Kong ◽  
Fred Lee ◽  
Kevin Day ◽  
...  
Keyword(s):  
Cell Membrane ◽  
Real Time ◽  
High Throughput ◽  
Ph Sensor ◽  
Ph Sensitive ◽  
Extracellular Ph ◽  
Water Soluble

A polymeric water-soluble extracellular pH sensor is developed with fluorescence ratiometric and cell membrane impermeable characters. The pH sensor enables us to exclusively detect the environmental pH of cells in real time.

High-Throughput and Real-Time Monitoring of Single-Cell Extracellular pH Based on Polyaniline Microarrays

2021 ◽  
Author(s):  
Lihui Yang ◽  
Xiaobo Liu ◽  
Bing Yin ◽  
Xunxun Deng ◽  
Xiaotong Lin ◽  
...  
Keyword(s):  
Single Cell ◽  
Real Time ◽  
High Throughput ◽  
Extracellular Ph ◽  
Real Time Monitoring

Highly Sensitive Detection of Paraquat with Pillar[5]arene as an aptamer in α-Hemolysin Nanopore

2021 ◽  
Author(s):  
Xiaojia Jiang ◽  
Mingsong Zang ◽  
Fei Li ◽  
Chunxi Hou ◽  
Quan Luo ◽  
...  
Keyword(s):  
Real Time ◽  
High Throughput ◽  
Single Molecule ◽  
Single Molecule Detection ◽  
Sensitive Detection ◽  
High Throughput Analysis ◽  
Throughput Analysis ◽  
The Real ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Biological nanopore-based techniques have attracted more and more attention recently in the field of single-molecule detection, because they allow the real-time, sensitive, high-throughput analysis. Herein, we report an engineered biological...

scholarly journals Real-time imaging of cellular forces using optical interference

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Andrew T. Meek ◽  
Nils M. Kronenberg ◽  
Andrew Morton ◽  
Philipp Liehm ◽  
Jan Murawski ◽  
...  
Keyword(s):  
Cell Culture ◽  
Real Time ◽  
High Throughput ◽  
Mechanical Activity ◽  
Dynamic Processes ◽  
Imaging Method ◽  
Neonatal Cardiomyocytes ◽  
A Cell ◽  
Cellular Forces ◽  
Time Acquisition

AbstractImportant dynamic processes in mechanobiology remain elusive due to a lack of tools to image the small cellular forces at play with sufficient speed and throughput. Here, we introduce a fast, interference-based force imaging method that uses the illumination of an elastic deformable microcavity with two rapidly alternating wavelengths to map forces. We show real-time acquisition and processing of data, obtain images of mechanical activity while scanning across a cell culture, and investigate sub-second fluctuations of the piconewton forces exerted by macrophage podosomes. We also demonstrate force imaging of beating neonatal cardiomyocytes at 100 fps which reveals mechanical aspects of spontaneous oscillatory contraction waves in between the main contraction cycles. These examples illustrate the wider potential of our technique for monitoring cellular forces with high throughput and excellent temporal resolution.

3D printed permeation module to monitor interaction of cell membrane transporters with exogenic compounds in real-time

2021 ◽  
Vol 1153 ◽  
pp. 338296
Author(s):  
Hana Sklenářová ◽  
Michaela Rosecká ◽  
Burkhard Horstkotte ◽  
Petr Pávek ◽  
Manuel Miró ◽  
...  
Keyword(s):  
Cell Membrane ◽  
Real Time ◽  
Membrane Transporters ◽  
3D Printed

High-throughput extracellular pH monitoring and antibiotics screening by polymeric fluorescent sensor with LCST property

Methods ◽  
2019 ◽  
Vol 168 ◽  
pp. 51-61 ◽  
Author(s):  
Tingting Pan ◽  
Cheng Yang ◽  
Jiaze Li ◽  
Jiapei Jiang ◽  
Jiaxing Wen ◽  
...  
Keyword(s):  
High Throughput ◽  
Fluorescent Sensor ◽  
Ph Monitoring ◽  
Extracellular Ph

scholarly journals Improved real-time RT-PCR method for high-throughput measurements using second derivative calculation and double correction

BioTechniques ◽  
2005 ◽  
Vol 38 (2) ◽  
pp. 287-293 ◽  
Author(s):  
Van Luu-The ◽  
Nathalie Paquet ◽  
Ezequiel Calvo ◽  
Jean Cumps
Keyword(s):  
Real Time ◽  
High Throughput ◽  
Second Derivative ◽  
Rt Pcr ◽  
Pcr Method

scholarly journals Cofilin is a pH sensor for actin free barbed end formation: role of phosphoinositide binding

2008 ◽  
Vol 183 (5) ◽  
pp. 865-879 ◽  
Author(s):  
Christian Frantz ◽  
Gabriela Barreiro ◽  
Laura Dominguez ◽  
Xiaoming Chen ◽  
Robert Eddy ◽  
...  
Keyword(s):  
Actin Filament ◽  
Structural Changes ◽  
Ph Sensor ◽  
Ph Sensitive ◽  
Actin Binding ◽  
Filamentous Actin ◽  
Filament Dynamics ◽  
Ph Dependent ◽  
Dynamics Simulations

Newly generated actin free barbed ends at the front of motile cells provide sites for actin filament assembly driving membrane protrusion. Growth factors induce a rapid biphasic increase in actin free barbed ends, and we found both phases absent in fibroblasts lacking H+ efflux by the Na-H exchanger NHE1. The first phase is restored by expression of mutant cofilin-H133A but not unphosphorylated cofilin-S3A. Constant pH molecular dynamics simulations and nuclear magnetic resonance (NMR) reveal pH-sensitive structural changes in the cofilin C-terminal filamentous actin binding site dependent on His133. However, cofilin-H133A retains pH-sensitive changes in NMR spectra and severing activity in vitro, which suggests that it has a more complex behavior in cells. Cofilin activity is inhibited by phosphoinositide binding, and we found that phosphoinositide binding is pH-dependent for wild-type cofilin, with decreased binding at a higher pH. In contrast, phosphoinositide binding by cofilin-H133A is attenuated and pH insensitive. These data suggest a molecular mechanism whereby cofilin acts as a pH sensor to mediate a pH-dependent actin filament dynamics.

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