Search results for: CF647
#35370362 
2022/03/30
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Prospects of NIR fluorescent nanosensors for green detection of SARS-CoV-2.
The pandemic of the novel coronavirus disease 2019 (COVID-19) is continuously causing hazards for the world. Effective detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can relieve the impact, but various toxic chemicals are also released into the environment. Fluorescence sensors offer a facile analytical strategy. During fluorescence sensing, biological samples such as tissues and body fluids have autofluorescence, giving false-positive/negative results because of the interferences. Fluorescence near-infrared (NIR) nanosensors can be designed from low-toxic materials with insignificant background signals. Although this research is still in its infancy, further developments in this field have the potential for sustainable detection of SARS-CoV-2. Herein, we summarize the reported NIR fluorescent nanosensors with the potential to detect SARS-CoV-2. The green synthesis of NIR fluorescent nanomaterials, environmentally compatible sensing strategies, and possible methods to reduce the testing frequencies are discussed. Further optimization strategies for developing NIR fluorescent nanosensors to facilitate greener diagnostics of SARS-CoV-2 for pandemic control are proposed.Dan Li, Zipeng Zhou, Jiachen Sun, Xifan Mei
2584 related Products with: Prospects of NIR fluorescent nanosensors for green detection of SARS-CoV-2.
1 kit 5 G10reactions 100lanes 10reactions 5 mg5x96 well plate1 kit10reactions (20 µl each)
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#26879206 2016/03/09
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An Ultra-High Fluorescence Enhancement and High Throughput Assay for Revealing Expression and Internalization of Chemokine Receptor CXCR4.
Revealing chemokine receptor CXCR4 expression, distribution, and internalization levels in different cancers helps to evaluate cancer progression or prognosis and to set personalized treatment strategy. We here describe a sensitive and high-throughput immunoassay for determining CXCR4 expression and distribution in cancer cells. The assay is accessible to a wide range of users in an ordinary lab only by dip-coating poly(styrene-co-N-isopropylacrylamide) spheres on the glass substrate. The self- assembled spheres form three-dimensional photonic colloidal crystals which enhance the fluorescence of CF647 and Alexa Fluor 647 by a factor of up to 1000. CXCR4 in cells is detected by using the sandwich immunoassay, where the primary antibody recognizes CXCR4 and the secondary antibody is labeled with CF647. With the newly established assay, we quantified the total expression of CXCR4, its distribution on the cell membrane and cytoplasm, and revealed their internalization level upon SDF-1α activation in various cancer cells, even for those with extremely low expression level.Hua He, Xiaojuan Wang, Tiantian Cheng, Yongqing Xia, Jun Lao, Baosheng Ge, Hao Ren, Naseer Ullah Khan, Fang Huang
2527 related Products with: An Ultra-High Fluorescence Enhancement and High Throughput Assay for Revealing Expression and Internalization of Chemokine Receptor CXCR4.
2 Pieces/Box100ug200ul0.1 mg50 ug 100ul2 Pieces/Box100ug5mg
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#25973835 2015/05/13
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Novel organic dyes for multicolor localization-based super-resolution microscopy.
Precise multicolor single molecule localization-based microscopy (SMLM) requires bright probes with compatible photo-chemical and spectral properties to resolve distinct molecular species at the nanoscale. The accuracy of multicolor SMLM is further challenged by color channel crosstalk and chromatic alignment errors. These constrains limit the applicability of known reversibly switchable organic dyes for optimized multicolor SMLM. Here, we tested 28 commercially available dyes for their suitability to super-resolve a known cellular nanostructure. We identified eight novel dyes in different spectral regimes that enable high quality dSTORM imaging. Among those, the spectrally close dyes CF647 and CF680 comprise an optimal dye pair for spectral demixing-based, registration free multicolor dSTORM with low crosstalk. Combining this dye pair with the separately excited CF568 we performed 3-color dSTORM to image the relative nanoscale distribution of components of the endocytic machinery and the cytoskeleton.Martin Lehmann, Gregor Lichtner, Haider Klenz, Jan Schmoranzer