scholarly journals Imaging multiple microRNAs in living cells using ATP self-powered strand-displacement cascade amplification

2018 ◽  
Vol 9 (5) ◽  
pp. 1184-1190 ◽  
Author(s):  
Xiangdan Meng ◽  
Wenhao Dai ◽  
Kai Zhang ◽  
Haifeng Dong ◽  
Xueji Zhang
Keyword(s):  
Living Cells ◽  
Strand Displacement ◽  
Displacement Cascade ◽  
Highly Sensitive ◽  
Mirna Detection ◽  
Self Powered ◽  
Cascade Amplification

Herein, we design a smart autonomous ATP self-powered strand displacement cascade amplification (SDCA) system for highly sensitive multiple intracellular miRNA detection.

Fluorescence ratio imaging of dynamic intracellular ionic signals

1988 ◽  
Vol 46 ◽  
pp. 42-43
Author(s):  
R. Y. Tsien ◽  
A. Minta ◽  
M. Poenie ◽  
J.P.Y. Kao ◽  
A. Harootunian
Keyword(s):  
Binding Sites ◽  
Living Cells ◽  
Molecular Engineering ◽  
Ph Indicators ◽  
Highly Sensitive ◽  
Fluorescence Ratio Imaging ◽  
Ratio Imaging ◽  
Technical Advances ◽  
Indicator Dyes ◽  
Fluorescein Dyes

Recent technical advances now enable the continuous imaging of important ionic signals inside individual living cells with micron spatial resolution and subsecond time resolution. This methodology relies on the molecular engineering of indicator dyes whose fluorescence is strong and highly sensitive to ions such as Ca2+, H+, or Na+, or Mg2+. The Ca2+ indicators, exemplified by fura-2 and indo-1, derive their high affinity (Kd near 200 nM) and selectivity for Ca2+ to a versatile tetracarboxylate binding site3 modeled on and isosteric with the well known chelator EGTA. The most commonly used pH indicators are fluorescein dyes (such as BCECF) modified to adjust their pKa's and improve their retention inside cells. Na+ indicators are crown ethers with cavity sizes chosen to select Na+ over K+: Mg2+ indicators use tricarboxylate binding sites truncated from those of the Ca2+ chelators, resulting in a more compact arrangement of carboxylates to suit the smaller ion.

Highly sensitive and stable fructose self-powered biosensor based on a self-charging biosupercapacitor

2021 ◽  
Vol 176 ◽  
pp. 112909
Author(s):  
Paolo Bollella ◽  
Zhanna Boeva ◽  
Rose-Marie Latonen ◽  
Kenji Kano ◽  
Lo Gorton ◽  
...  
Keyword(s):  
Highly Sensitive ◽  
Self Powered

A highly-sensitive “turn on” probe based on coumarin β-diketone for hydrazine detection in PBS and living cells

2021 ◽  
Vol 252 ◽  
pp. 119510
Author(s):  
Rui Chen ◽  
Guang-Jin Shi ◽  
Jia-Jia Wang ◽  
Hai-Feng Qin ◽  
Qi Zhang ◽  
...  
Keyword(s):  
Living Cells ◽  
Turn On ◽  
Highly Sensitive

Highly sensitive real-time detection of intracellular oxidative stress and application in mycotoxin toxicity evaluation based on living single-cell electrochemical sensors

The Analyst ◽  
2021 ◽  
Author(s):  
Lu Gao ◽  
Jiadi Sun ◽  
Liping Wang ◽  
Qigao Fan ◽  
Gaowen Zhu ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Electrochemical Sensor ◽  
Single Cell ◽  
Real Time ◽  
Electrochemical Sensors ◽  
Living Cells ◽  
Selective Detection ◽  
Toxicity Evaluation ◽  
Highly Sensitive ◽  
Intracellular Oxidative Stress

Single-cell electrochemical sensor is used in the local selective detection of living cells because of its high spatial–temporal resolution and sensitivity, as well as its ability to obtain comprehensive cellular physiological states and processes.

Target-triggered, self-powered DNAzyme–MnO2 nanosystem: towards imaging microRNAs in living cells

2019 ◽  
Vol 55 (89) ◽  
pp. 13366-13369 ◽  
Author(s):  
Mei-Rong Cui ◽  
Xiang-Ling Li ◽  
Jing-Juan Xu ◽  
Hong-Yuan Chen
Keyword(s):  
Signal Amplification ◽  
Living Cells ◽  
Intracellular Signal ◽  
Self Powered

We constructed a versatile self-powered DNAzyme–MnO2 nanosystem for intracellular signal amplification and sensitive imaging of miRNAs in living cells.

Highly sensitive multiplex detection of microRNA by competitive DNA strand displacement fluorescence assay

Talanta ◽  
2019 ◽  
Vol 200 ◽  
pp. 487-493 ◽  
Author(s):  
Raja Chinnappan ◽  
Rawa Mohammed ◽  
Ahmed Yaqinuddin ◽  
Khalid Abu-Salah ◽  
Mohammed Zourob
Keyword(s):  
Fluorescence Assay ◽  
Multiplex Detection ◽  
Strand Displacement ◽  
Highly Sensitive ◽  
Dna Strand Displacement ◽  
Dna Strand

Highly sensitive detection of DNA damage in living cells by SERS and electrochemical measurements using a flexible gold nanoelectrode

The Analyst ◽  
2021 ◽  
Author(s):  
Jing Zhou ◽  
Dan Yang ◽  
Guohui Liu ◽  
Siying Li ◽  
Wennan Feng ◽  
...  
Keyword(s):  
Dna Damage ◽  
Oxidative Damage ◽  
Living Cells ◽  
Oxidation Products ◽  
Electrochemical Measurements ◽  
Sensitive Detection ◽  
Dna Oxidative Damage ◽  
Highly Sensitive ◽  
Highly Sensitive Detection ◽  
Gold Nanoelectrode

Guanine (G) oxidation products, such as 8-hydroxy-2′-deoxyguanosine (8-OHdG) and 8-oxo-guanine (8-OXOG), have been widely studied as promising biomarkers for DNA oxidative damage.

A Novel Highly Sensitive Dual-channel Chemical Sensor for Sequential Recognition of Cu2+ and CN- in Aqueous Media and its Bioimaging Applications on Living Cells

2021 ◽  
Author(s):  
Yong-Qiang Xie ◽  
You-Ming Zhang ◽  
Zhao-Hui Li ◽  
Qi Xiao-Ni ◽  
Hong Yao ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Aqueous Media ◽  
Living Cells ◽  
Chemical Probe ◽  
Dual Channel ◽  
Highly Sensitive ◽  
Sequential Recognition

A simple and unique dual-channel chemical probe (DH) was designed and synthesized, which not only realized sequential recognition of Cu2+ and CN− by colorimetric and fluorometric methods, but also realized...

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