A robust and versatile signal-on fluorescence sensing strategy was developed to provide label-free detection of various target analytes. The strategy used SYBR Green I dye and graphene oxide as signal reporter and signal-to-background ratio enhancer, respectively. Multidrug resistance protein 1 (MDR1) gene and mercury ion (Hg(2+)) were selected as target analytes to investigate the generality o...

Microbial cell counting provides essential information for the study of abundance profiles and biogeochemical interactions with surrounding environments. However, it often requires labor-intensive time-consuming processes, particularly subseafloor sediment samples, in which non-cell particles are abundant. We developed a rapid straightforward method staining microbial intracellular DNA by SYBR ...

A G-quadruplex-based, label-free fluorescence assay was demonstrated for the detection of adenosine triphosphate (ATP). A double-stranded DNA (dsDNA), hybridized by ATP-aptamer and its complementary sequence, was employed as a substrate for ATP binding. SYBR Green I (SG I) was a fluorescent probe and exonuclease III (Exo III) was a nuclease to digest the dsDNA. Consequently, in the absence of A...

SYBR Green I (SG) is widely used in real-time PCR applications as an intercalating dye and is included in many commercially available kits at undisclosed concentrations. Binding of SG to double-stranded DNA is non-specific and additional testing, such as DNA melting curve analysis, is required to confirm the generation of a specific amplicon. The use of melt curve analysis eliminates the necess...

A quantitative one-step SYBR Green I-based reverse transcription (RT)-PCR system was developed for the detection and differentiation of four different dengue virus serotypes in acute-phase serum samples. A set of group- and serotype-specific primer pairs was designed against conserved sequences in the core region and evaluated for clinical diagnosis. A linear relationship was obtained between t...

This work presents a method to visualize the degradation of exogenous DNA in living cells using a novel type of activatable fluorescence imaging probe. Deoxyribonuclease (DNase)-activatable fluorescence probes (DFProbes) are composed of double strands deoxyribonucleic acid (dsDNA) which is labeled with fluorophore (ROX or Cy3) and quencher on the end of one of its strands, and stained with SYBR...

The present study was envisaged to compare the sensitivity of SYBR Green real time PCR with immunofluorescence PCR for diagnosis of rabies. SYBR Green real time PCR technique was applied on brain samples collected from 39 rabies suspected animals. Sensitivity of SYBR Green technique was compared in accordance with WHO recommended gold standard test viz. Fluorescent Antibody Technique (FAT) appl...

background: breast cancer is the most common cancer in women. non-coding rnasespecially mirnas have important regulatory roles in cancer. mirnas are 21-24 nucleotides which have different levels of expression between tumors and normal tissues. in this study, we have analyzed expression level of mir-520d in three different groups of breast cancer. methods: fifty nine samples were divided into di...

PURPOSE To determine whether continuous monitoring of SYBR Green I fluorescence provides a reliable and flexible method of quantitative RT-PCR. Our aims were (i) to test whether SYBR Green I analysis could quantify a wide range of known VEGF template concentrations, (ii) to apply this method in an experimental model, and (iii) to determine whether 20 existing primer pairs could be used to quant...