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author:("kashin, James")
1.  Suspension Microarray with Dendrimer Signal Amplification Allows Direct and High-Throughput Subtyping of Listeria monocytogenes from Genomic DNA 
Journal of Clinical Microbiology  2005;43(7):3255-3259.
Listeria monocytogenes is a significant cause of food-borne disease and mortality; therefore, epidemiological investigations of this pathogen require subtyping methods that are rapid, discriminatory, and reproducible. Although conventional microarray subtyping analysis has been shown to be both high resolution and genetically informative, it is still relatively low throughput and technically challenging. Suspension microarray technology eliminates the technical issues associated with planar microarrays and allows high-throughput subtyping of L. monocytogenes strains. In this study, a suspension array assay using dendrimer signal amplification allowed rapid and accurate serovar identification of L. monocytogenes strains using genomic DNA as a target. The ability to subtype genomic DNA without PCR amplification allows probes to be designed for many different regions within the bacterial genome and should allow high-resolution subtyping not possible with multiplex PCR.
PMCID: PMC1169114  PMID: 16000444
2.  Visualizing the Needle in the Haystack: In Situ Hybridization With Fluorescent Dendrimers 
In situ hybridization with 3DNA™ dendrimers is a novel tool for detecting low levels of mRNA in tissue sections and whole embryos. Fluorescently labeled dendrimers were used to identify cells that express mRNA for the skeletal muscle transcription factor MyoD in the early chick embryo. A small population of MyoD mRNA positive cells was found in the epiblast prior to the initiation of gastrulation, two days earlier than previously detected using enzymatic or radiolabeled probes for mRNA. When isolated from the epiblast and placed in culture, the MyoD mRNA positive cells were able to differentiate into skeletal muscle cells. These results demonstrate that DNA dendrimers are sensitive and precise tools for identifying low levels of mRNA in single cells and tissues.
PMCID: PMC481046  PMID: 15272365
MyoD protein; In situ hybridization

Results 1-2 (2)