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T2 Bio publishes data supporting diagnostic test T2Candida in Science Translational Medicine
Date:4/25/2013

, T2 Biosystems, and principle investigator of the study. "Importantly, this T2MR approach to Candida identification is also amenable to virtually any molecular, immunoassay or hemostasis target, and we are currently developing a portfolio of products where high sensitivity and rapid detection will have the greatest impact on healthcare."

"T2MR represents a revolutionary, highly-sensitive nanotechnology solution, which can rapidly detect pathogens leading to early intervention that can save lives," said Robert S. Langer, D. Sc., David H. Koch Institute Professor, MIT, and co-founder and board member of T2 Biosystems. "T2Candida exemplifies the potential of nanotechnology to create great advances in healthcare in the near term."

In the paper entitled "T2 magnetic resonance enables nanoparticle-mediated rapid detection of candidemia in whole blood", the authors introduce a novel diagnostic method based on T2 magnetic resonance (T2MR). The T2Candida assay uses blood-compatible polymerase chain reaction (PCR) to amplify Candida DNA, which then binds to superparamagnetic nanoparticles coated with a complementary DNA strand. The binding event causes the nanoparticles to cluster, which changes the sample's T2MR signal. Using this approach, the researchers tested both Candida-spiked and patient samples and were able to rapidly, accurately and reproducibly detect five Candida species within human whole blood with a limit of detection as low as 1 CFU/mL and a time-to-result of approximately three hours. Spiked samples showed 98% positive agreement and 100% negative agreement between T2MR and blood culture. Clinical samples demonstrated similar concordance with blood culture with the important distinction that T2MR was able to identify Candida species in the presence of antifungals, whereas blood culture could not. This study suggests that rapid diagnosis of specific Candida species is achievable with T2MR technology, which is
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Contact: Karen Sharma
ksharma@macbiocom.com
781-235-3060
MacDougall Biomedical Communications, Inc.
Source:Eurekalert

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