scholarly journals Rapid Determination of Monozygous Twinning with a Microfabricated Capillary Array Electrophoresis Genetic-Analysis Device1

2008 ◽  
Vol 54 (6) ◽  
pp. 1080-1084 ◽  
Author(s):  
Stephanie H I Yeung ◽  
Igor L Medintz ◽  
Susan A Greenspoon ◽  
Richard A Mathies
Keyword(s):  
Genetic Analysis ◽  
Rapid Determination ◽  
Point Of Care ◽  
Pcr Amplification ◽  
Control Individual ◽  
Unrelated Control ◽  
Capillary Array Electrophoresis ◽  
Genotypic Analysis ◽  
Diagnostic Technology ◽  
Capillary Array

Abstract Background: Microfabricated genetic-analysis devices have great potential for delivering complex clinical diagnostic technology to the point of care. As a demonstration of the potential of these devices, we used a microfabricated capillary array electrophoresis (μCAE) instrument to rapidly characterize the familial and genotypic relationship of twins who had been assigned fraternal (dizygous) status at birth. Methods: We extracted the genomic DNA from buccal samples collected from the twin sons, the parents, another sibling, and an unrelated control individual. We then carried out multiplex PCR amplification of sequences at 16 short tandem repeat loci commonly used in forensic identity testing. We simultaneously separated the amplicons from all of the individuals on a μCAE device and fluorescently detected the amplicons with single-base resolution in <30 min. Results: The genotypic analysis confirmed the identical status of the twins and revealed, in conjunction with the medical data, that their twin status arose from the rarer dichorionic, diamniotic process. Conclusions: The ability to rapidly analyze complex genetic samples with μCAE devices demonstrates that this approach can help meet the growing need for rapid genetics-based diagnostics.

scholarly journals Genotyping Energy-Transfer-Cassette-labeled Short-Tandem-Repeat Amplicons with Capillary Array Electrophoresis Microchannel Plates

2001 ◽  
Vol 47 (9) ◽  
pp. 1614-1621 ◽  
Author(s):  
Igor L Medintz ◽  
Lorenzo Berti ◽  
Charles A Emrich ◽  
Jennifer Tom ◽  
James R Scherer ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Genetic Analysis ◽  
High Throughput ◽  
High Performance ◽  
Microchannel Plate ◽  
Str Analysis ◽  
Capillary Array Electrophoresis ◽  
Microchannel Plates ◽  
Capillary Array ◽  
Short Tandem

Abstract Background: Genetic analysis of microsatellite DNA is a powerful tool used in linkage analysis, gene mapping, and clinical diagnosis. To address the expanding needs of studies of short tandem repeats (STRs), we demonstrated high-performance STR analysis on a high-throughput microchannel plate-based platform. Methods: Energy-transfer-cassette-labeled STR amplicons were separated and typed on a microfabricated 96-channel radial capillary array electrophoresis (CAE) microchannel plate system. Four-color detection was accomplished with a laser-excited confocal fluorescence rotary scanner. Results: Multiplex STR analysis with single base-pair resolution was demonstrated on denaturing polyacrylamide gel media. The high-throughput multiplex capabilities of this genetic analysis platform were demonstrated by the simultaneous separation of STR amplicons representing 122 samples in ninety-six 5.5-cm-long channels in <8 min. Sizing values obtained for these amplicons on the CAE microchannel plate were comparable to those measured on a conventional commercial CAE instrument and exhibit <1% sizing variance. Conclusions: Energy-transfer-cassette labeling and microfabricated CAE microchannel plates allow high-performance multiplex STR analyses.

High-Performance Genetic Analysis on Microfabricated Capillary Array Electrophoresis Plastic Chips Fabricated by Injection Molding

2005 ◽  
Vol 77 (7) ◽  
pp. 2140-2146 ◽  
Author(s):  
Fuquan Dang ◽  
Osamu Tabata ◽  
Masaya Kurokawa ◽  
Ashraf A. Ewis ◽  
Lihua Zhang ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Injection Molding ◽  
High Performance ◽  
Capillary Array Electrophoresis ◽  
Capillary Array

scholarly journals High-throughput genetic analysis using microfabricated 96-sample capillary array electrophoresis microplates

1998 ◽  
Vol 95 (5) ◽  
pp. 2256-2261 ◽  
Author(s):  
P. C. Simpson ◽  
D. Roach ◽  
A. T. Woolley ◽  
T. Thorsen ◽  
R. Johnston ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
High Throughput ◽  
Capillary Array Electrophoresis ◽  
Capillary Array

Microfabricated 384-Lane Capillary Array Electrophoresis Bioanalyzer for Ultrahigh-Throughput Genetic Analysis

2002 ◽  
Vol 74 (19) ◽  
pp. 5076-5083 ◽  
Author(s):  
Charles A. Emrich ◽  
Huijun Tian ◽  
Igor L. Medintz ◽  
Richard A. Mathies
Keyword(s):  
Genetic Analysis ◽  
Capillary Array Electrophoresis ◽  
Capillary Array

(ULTRA)2-High Throughput Genetic Analysis Using Microfabricated Capillary Array Electrophoresis Devices

2001 ◽  
pp. 13-15 ◽  
Author(s):  
Charles A. Emrich ◽  
Igor L. Medintz ◽  
Huijun Tian ◽  
Lorenzo Berti ◽  
Richard A. Mathies
Keyword(s):  
Genetic Analysis ◽  
High Throughput ◽  
Capillary Array Electrophoresis ◽  
Capillary Array

High-performance genetic analysis using microfabricated capillary array electrophoresis microplates

2001 ◽  
Vol 22 (18) ◽  
pp. 3845-3856 ◽  
Author(s):  
Igor L. Medintz ◽  
Brian M. Paegel ◽  
Robert G. Blazej ◽  
Charles A. Emrich ◽  
Lorenzo Berti ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
High Performance ◽  
Capillary Array Electrophoresis ◽  
Capillary Array

MICRO CAPILLARY ARRAY ELECTROPHORESIS CHIP BY MOVING MASK LIGA TECHNOLOGY

2004 ◽  
Vol 01 (01) ◽  
pp. 39-46
Author(s):  
HUI YOU ◽  
SHOUJI SHINOHARA ◽  
KENNICHI ENAMI ◽  
SHINSUKE SHIBATA ◽  
OSAMU TABATA ◽  
...  
Keyword(s):  
Adhesive Bonding ◽  
Dna Analysis ◽  
Adhesive Layer ◽  
Fabrication Process ◽  
Optical Components ◽  
X Ray ◽  
Laser Induced Fluorescence Detection ◽  
Capillary Array Electrophoresis ◽  
Liga Technology ◽  
Capillary Array

The concept and the fabrication process of a micro capillary array electrophoresis (μ-CAE) for DNA analysis were stated. The chip was mainly made of plastic and fabricated by the innovatory LIGA technology which included moving mask deep X-ray lithography, electroplating and hot embossing, and assembled by an adhesive bonding, in which the adhesive layer solidified and formed firm bond under UV exposure. The micro channel array with high aspect ratio is the key part, whose wall should have a slight inclination to ensure the demoulding. It was demonstrated that moving mask deep X-ray lithography (M2DXL) technology could successfully control the inclination and enabled to integrate micro optical components such as micro lens into the chip, which improved detection performance greatly. The fabrication process was experimented and some initial prototype chips have been obtained. Fluidic test and electrophoresis test with laser-induced fluorescence detection has been done on the prototype. The results confirm that the μ-CAE by moving mask LIGA process is realizable and it has great potential in high-throughput, which may lead to ultra-fast DNA analysis.

scholarly journals A Self-Contained Portable Polymerase-Chain-Reaction System Integrated with Electromagnetic Mini-Actuators for Bi-Directional Fluid Transport

2011 ◽  
Vol 27 (3) ◽  
pp. 357-364
Author(s):  
B. T. Chia ◽  
S.-A. Yang ◽  
M.-Y. Cheng ◽  
C.-W. Lin ◽  
Y.-J. Yang
Keyword(s):  
Polymerase Chain Reaction ◽  
Fluid Transport ◽  
Point Of Care ◽  
Reaction System ◽  
Thermal Characteristics ◽  
Pcr Amplification ◽  
Chain Reaction ◽  
Rapid Temperature ◽  
Small Footprint ◽  
Polymerase Chain

ABSTRACTIn this paper, the development of a portable polymerase chain reaction (PCR) device is presented. Integrating electromagnetic mini-actuators for bi-directional fluid transport, the proposed device, whose dimension is 67mm × 66mm × 25mm, can be fully operated with a 5V DC voltage. The device consists of four major parts: A disposable channel chip in which PCR mixture is manipulated and reacted, a heater chip which generates different temperature zones for PCR reaction, a linear actuator array for pumping PCR mixture, and a circuit module for controlling and driving the system. The advantages of the device include the rapid temperature responses associated with continuous-flow-type PCR devices, as well as the programmable thermal cycling associated with chamber-type PCR devices. The thermal characteristics are measured and discussed. PCR amplification is successfully performed for the 122 bp segment of MCF-7/adr cell line. Due to its small footprint, this self-contained system potentially can be employed for point-of-care (POC) applications.

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