Potential-Resolved Electrochemiluminescence Nanoprobes for Visual Apoptosis Evaluation at Single-Cell Level.

08:00 EDT 9th April 2019 | BioPortfolio

Summary of "Potential-Resolved Electrochemiluminescence Nanoprobes for Visual Apoptosis Evaluation at Single-Cell Level."

In this work, a potential-resolved electrochemiluminescence (ECL) method is developed and used for the apoptosis diagnosis at single-cell level. The apoptosis of cells usually induces the decreasing expression of epidermal growth factor receptor (EGFR), and promotes phosphatidylserine (PS) eversion in cell membrane. Here, Au@L012 and g-C3N4 as ECL probes are functionalized with epidermal growth factor (EGF) and peptide (PSBP) to recognize the EGFR and PS on cell surface, respectively, showing two well-separated ECL signals during a potential scanning. Experimental results reveal that the relative ECL change of g-C3N4 and Au@L012 correlates with the degree of apoptosis, which provides an accurate way to investigate apoptosis without interference that solely changes EGFR or PS. With a homemade ECL microscopy, we simultaneously evaluate the EGFR and PS expression of abundant individual cells, and therefore achieve the visualization analysis of the apoptosis rate for normal and cancer cell samples. This strategy contributes to visually studying tumor markers and pushing the application of ECL imaging for the disease diagnosis at single-cell level.


Journal Details

This article was published in the following journal.

Name: Analytical chemistry
ISSN: 1520-6882


DeepDyve research library

PubMed Articles [26449 Associated PubMed Articles listed on BioPortfolio]

Diagnostic accuracy and efficiency of combined acquisition of low-dose time-resolved and single-phase high-resolution contrast-enhanced magnetic resonance angiography in a single session for pre-angiographic evaluation of spinal vascular disease.

The purpose of this study was to evaluate the utility and efficacy of combined low-dose, time-resolved (TR) and single-phase high-resolution (HR) contrast-enhanced MRA (CE-MRA) as a pre-angiographic s...

Nucleus and Mitochondria Targeting Theranostic Plasmonic SERS Nanoprobes Reveal Molecular Stress Response Difference in Hyperthermia Cell Death between Cancerous and Normal Cells.

Metallic plasmonic nanoparticles have been intensively exploited as theranostic nanoprobes for plasmonic photothermal therapy (PPT) and surface enhanced Raman spectroscopy (SERS) applications. But the...

Evaluating program effects: Conceptualizing and demonstrating a typology.

Outcome evaluation is very important for program evaluation and has been becoming increasingly so in the age of accountability. Typically, outcome evaluation is conducted for a single program from a s...

A novel ultrasensitive electrochemiluminescence biosensor for glutathione detection based on poly-L-lysine as co-reactant and graphene-based poly(luminol/aniline) as nanoprobes.

In this work, an ultrasensitive electrochemiluminescence (ECL) biosensor was constructed using poly-L-lysine (PLL) as a novel co-reactant of luminol and poly(luminol/aniline) nanorods loaded reduced g...

Sensing caspase-1 activity using activatable F MRI nanoprobes with improved turn-on kinetics.

Activatable 19F MRI nanoprobes for sensing caspase-1 activity were developed. Tandem repetition of substrate peptide sequences improved the turn-on response of nanoprobes, allowing detection of caspas...

Clinical Trials [8777 Associated Clinical Trials listed on BioPortfolio]

Evaluation of the Performance of a Fungal Nail Treatment on the Visual Signs of Onychomycosis

This is a prospective, open label, non-comparative clinical investigation to evaluate the performance of a Fungal Nail Treatment on the visual signs of onychomycosis. The Fungal Nail Trea...

Single Oral Doses Study of Nerispirdine on Visual Function in Patients With Multiple Sclerosis

The primary objective of the study is to evaluate the effect of nerispirdine (50 mg or 400 mg) and placebo given orally as a single dose once a week in crossover design on latency of Visua...

Intravitreous CytokinE Level in pAtient With retiNal Detachment

Photoreceptor apoptosis is the basis for permanent visual loss in a number of retinal disorders including age-related macular degeneration (AMD) and retinal detachment (RD). Thus, despite ...

Are There Changes in the Nerve Fiber Layer (NFL) After Lowering of Eye Pressure?

The aim of this study was to evaluate structural and functional improvement following intraocular pressure (IOP) reductions in patients with glaucoma using Spectral Domain Optical Coherenc...

Evaluation of [18F]-ML-10 as a PET Imaging Radiotracer for Early Detection of Response of Brain Metastases to Whole Brain Radiation Therapy

The purpose of this study is to evaluate the potential of [18F]-ML-10 to serve as a non-invasive imaging tool for the early detection of apoptosis in brain metastases in response to radiat...

Medical and Biotech [MESH] Definitions

An in situ method for detecting areas of DNA which are nicked during APOPTOSIS. Terminal deoxynucleotidyl transferase is used to add labeled dUTP, in a template-independent manner, to the 3 prime OH ends of either single- or double-stranded DNA. The terminal deoxynucleotidyl transferase nick end labeling, or TUNEL, assay labels apoptosis on a single-cell level, making it more sensitive than agarose gel electrophoresis for analysis of DNA FRAGMENTATION.

Enzymes that recombine DNA segments by a process which involves the formation of a synapse between two DNA helices, the cleavage of single strands from each DNA helix and the ligation of a DNA strand from one DNA helix to the other. The resulting DNA structure is called a Holliday junction which can be resolved by DNA REPLICATION or by HOLLIDAY JUNCTION RESOLVASES.

A visual symptom in which a single object is perceived by the visual cortex as two objects rather than one. Disorders associated with this condition include REFRACTIVE ERRORS; STRABISMUS; OCULOMOTOR NERVE DISEASES; TROCHLEAR NERVE DISEASES; ABDUCENS NERVE DISEASES; and diseases of the BRAIN STEM and OCCIPITAL LOBE.

Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.

A method of detecting gene mutation by mixing PCR-amplified mutant and wild-type DNA followed by denaturation and reannealing. The resultant products are resolved by gel electrophoresis, with single base substitutions detectable under optimal electrophoretic conditions and gel formulations. Large base pair mismatches may also be analyzed by using electron microscopy to visualize heteroduplex regions.

Quick Search


DeepDyve research library

Searches Linking to this Article