Exploiting the Catalytic Ability of Polydopamine-Remodeling Gold Nanoparticles toward the Naked-Eye Detection of Cancer Cells at a Single-Cell Level

2021 ◽  
Vol 4 (3) ◽  
pp. 2821-2828
Author(s):  
Bo-Zhao Yang ◽  
Zheng-Yuan Su ◽  
Amily Fang-Ju Jou
2021 ◽  
Author(s):  
Cecile COURREGES ◽  
Mélanie Bonnecaze ◽  
Delphine Flahaut ◽  
Sophie Nolivos ◽  
Regis Grimaud ◽  
...  

A chemical fingerprint of Escherichia coli cells surface labeled by gelatin coated gold nanoparticles was obtained by combining Auger Electron Spectroscopy (AES) for single cell level chemical images, and Time-of-Flight...


2018 ◽  
Vol 3 (41) ◽  
pp. 11541-11551 ◽  
Author(s):  
Shweta Khanna ◽  
Prasanta Padhan ◽  
Sourav Das ◽  
Kumar Sagar Jaiswal ◽  
Archana Tripathy ◽  
...  

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Yanjun Zhang ◽  
Yasufumi Takahashi ◽  
Sung Pil Hong ◽  
Fengjie Liu ◽  
Joanna Bednarska ◽  
...  

AbstractDynamic mapping of extracellular pH (pHe) at the single-cell level is critical for understanding the role of H+ in cellular and subcellular processes, with particular importance in cancer. While several pHe sensing techniques have been developed, accessing this information at the single-cell level requires improvement in sensitivity, spatial and temporal resolution. We report on a zwitterionic label-free pH nanoprobe that addresses these long-standing challenges. The probe has a sensitivity > 0.01 units, 2 ms response time, and 50 nm spatial resolution. The platform was integrated into a double-barrel nanoprobe combining pH sensing with feedback-controlled distance dependance via Scanning Ion Conductance Microscopy. This allows for the simultaneous 3D topographical imaging and pHe monitoring of living cancer cells. These classes of nanoprobes were used for real-time high spatiotemporal resolution pHe mapping at the subcellular level and revealed tumour heterogeneity of the peri-cellular environments of melanoma and breast cancer cells.


Blood ◽  
2019 ◽  
Vol 133 (13) ◽  
pp. 1446-1456
Author(s):  
Satyen H. Gohil ◽  
Catherine J. Wu

Abstract We now have the potential to undertake detailed analysis of the inner workings of thousands of cancer cells, one cell at a time, through the emergence of a range of techniques that probe the genome, transcriptome, and proteome combined with the development of bioinformatics pipelines that enable their interpretation. This provides an unprecedented opportunity to better understand the heterogeneity of chronic lymphocytic leukemia and how mutations, activation states, and protein expression at the single-cell level have an impact on disease course, response to treatment, and outcomes. Herein, we review the emerging application of these new techniques to chronic lymphocytic leukemia and examine the insights already attained through this transformative technology.


PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e57706 ◽  
Author(s):  
Ediz Sariisik ◽  
Denitsa Docheva ◽  
Daniela Padula ◽  
Cvetan Popov ◽  
Jan Opfer ◽  
...  

2019 ◽  
Vol 43 (5) ◽  
pp. 2111-2117 ◽  
Author(s):  
B. Sinduja ◽  
S. Abraham John

The application of Au-GQDs towards the sensitive determination of thiamine was demonstrated.


2010 ◽  
Vol 46 (19) ◽  
pp. 3315 ◽  
Author(s):  
Sang Kyu Kim ◽  
Hyunmin Cho ◽  
Jinyoung Jeong ◽  
Ji Na Kwon ◽  
Yongwon Jung ◽  
...  

2016 ◽  
Vol 52 (17) ◽  
pp. 3508-3511 ◽  
Author(s):  
Shaojue Wu ◽  
Si Yu Tan ◽  
Chung Yen Ang ◽  
Zhong Luo ◽  
Yanli Zhao

A gold nanoparticle-based platform for naked-eye detection of H2O2 was realized by changing the surface hydrophilicity.


2015 ◽  
Vol 17 (28) ◽  
pp. 18606-18612 ◽  
Author(s):  
Shuhei Shinohara ◽  
Daisuke Tanaka ◽  
Koichi Okamoto ◽  
Kaoru Tamada

Colorimetric plasmon sensors for naked-eye detection by adsorption of gold nanoparticles onto multilayered silver nanoparticle sheets on an Au substrate.


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