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Journal ArticleDOI

Megapixel digital PCR

TLDR
A microfluidic 'megapixel' digital PCR device that uses surface tension–based sample partitioning and dehydration control to enable high-fidelity single DNA molecule amplification in 1,000,000 reactors of picoliter volume with densities up to 440,000 reactor cm−2 is presented.
Abstract
We present a microfluidic 'megapixel' digital PCR device that uses surface tension-based sample partitioning and dehydration control to enable high-fidelity single DNA molecule amplification in 1,000,000 reactors of picoliter volume with densities up to 440,000 reactors cm(-2). This device achieves a dynamic range of 10(7), single-nucleotide-variant detection below one copy per 100,000 wild-type sequences and the discrimination of a 1% difference in chromosome copy number.

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Citations
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Journal ArticleDOI

Evaluation of a Droplet Digital Polymerase Chain Reaction Format for DNA Copy Number Quantification

TL;DR: Analysis of simplex and duplex assays targeting two distinct loci in the Lambda DNA genome using the ddPCR platform agreed, within their expanded uncertainties, with values obtained using a lower density microfluidic chamber based digital PCR (cdPCR).
Journal ArticleDOI

dPCR: A Technology Review.

TL;DR: This review compares the fundamental concepts behind the quantification of nucleic acids by dPCR and quantitative real-time PCR and examines how isothermal amplification could be an alternative to PCR in digital assays.
Journal ArticleDOI

Advancing the speed, sensitivity and accuracy of biomolecular detection using multi-length-scale engineering

TL;DR: Recent strategies that combine nano- and microscale materials and devices to produce large improvements in detection sensitivity, speed and accuracy, allowing previously undetectable biomarkers to be identified in clinical samples are reviewed.
Journal ArticleDOI

Simultaneous DNA amplification and detection using a pH-sensing semiconductor system

TL;DR: This work has developed an integrated chip for real-time amplification and detection of nucleic acid using pH-sensing complementary metal-oxide semiconductor (CMOS) technology and evaluated the platform using two amplification strategies: PCR and isothermal amplification.
References
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Journal ArticleDOI

Monolithic microfabricated valves and pumps by multilayer soft lithography

TL;DR: An extension to the soft lithography paradigm, multilayersoft lithography, with which devices consisting of multiple layers may be fabricated from soft materials is described, to build active microfluidic systems containing on-off valves, switching valves, and pumps entirely out of elastomer.
PatentDOI

Microfluidic large scale integration

TL;DR: The fluidic multiplexor as discussed by the authors is a combinatorial array of binary valve patterns that exponentially increases the processing power of a network by allowing complex fluid manipulations with a minimal number of inputs.
PatentDOI

Circulating Mutant DNA to Assess Tumor Dynamics

TL;DR: In this article, a highly sensitive approach to quantify circulating tumor DNA (ctDNA) in body samples of patients was applied to reliably monitor tumor dynamics in subjects with cancer, especially those who are undergoing surgery or chemotherapy.
Journal ArticleDOI

Digital PCR

TL;DR: An approach for transforming the exponential, analog nature of the PCR into a linear, digital signal suitable for this purpose is described and demonstrated through the detection of a mutant ras oncogene in the stool of patients with colorectal cancer.
Journal ArticleDOI

Noninvasive diagnosis of fetal aneuploidy by shotgun sequencing DNA from maternal blood

TL;DR: Using the directly sequenced cell-free DNA with high-throughput shotgun sequencing technology from plasma of pregnant women, this method successfully identified all nine cases of trisomy 21 (Down syndrome), two cases oftrisomy 18 (Edward syndrome), and one case of Trisomy 13 (Patau syndrome) in a cohort of 18 normal and aneuploid pregnancies.
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