Navigation Links
Nano detector for deadly anthrax
Date:7/6/2011

An automatic and portable detector that takes just fifteen minutes to analyze a sample suspected of contamination with anthrax is being developed by US researchers. The technology amplifies any anthrax DNA present in the sample and can reveal the presence of just 40 microscopic cells of the deadly bacteria Bacillus anthracis.

B. anthracis, commonly known as anthrax, is a potentially lethal microbe that might be used intentionally to infect victims through contamination of food and water supplies, aerosolized particles, or even dried powders, such as those used in bioterrorist attacks in the USA. Detection is crucial to preventing widespread fatalities in the event of an anthrax attack. However, the complexity of the microbe's biology have so far made it difficult to build a portable system that can be employed quickly in the field. That said, there are several systems available that use PCR to amplify a particular component of the genetic material present in anthrax and then to flag this amplified signal. These systems are fast and sensitive but do not integrate sample preparation and so are not as convenient as a single detector unit would be.

Writing in the International Journal of Biomedical Nanoscience and Nanotechnology this month, Nathaniel Cady of the College of Nanoscale Science and Engineering (CNSE) of the University at Albany and colleagues there and at Cornell University, New York, explain how they have constructed nanofabricated fluidic cartridges that can be used to carry out detection of anthrax. The device is a so-called "lab-on-a-chips" device, or more properly a 3D microfluidic network that contains nanofabricated pillar structures.

The device has fluidic inputs for adding sample and reagents, removing waste, for carrying out DNA purification, and critically an integrated chamber for amplifying only the target DNA in the sample using the polymerase chain reaction (PCR) system. The chip also contains a wave guide for the fluorescence-based identification of the amplified DNA and thus the target microbe. Importantly, the system works without manual intervention other than loading a droplet of sample into the detector.

"The average time required for DNA purification during these experiments was approximately 15 min, and when combined with real-time PCR analysis, this resulted in an average time to detection of 60 min," the team says. The system can detect as few as 40 B. anthracis cells. "Due to its small size and low power requirements, this system can be further developed as a truly portable, hand-held device," the researchers conclude.


'/>"/>

Contact: Nathaniel C. Cady
ncady@uamail.albany.edu
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Sensitive nanowire disease detectors made by Yale scientists
2. Electromagnetic phantom exorcises specters of metal detector tests
3. Pitt-led researchers create quick, simple fluorescent detector for TB
4. A quicker, cheaper SARS virus detector -- one easily customizable for other targets
5. UD start-up company prepares to commercialize novel detector for medical, military applications
6. Students design early labor detector to prevent premature births
7. $4.3 million DARPA grant enables development of biological and chemical threat detector
8. Livermore researchers develop battery-less chemical detector
9. Rice-born detector finds heaviest antimatter
10. Deadly rugby virus spreads in sumo wrestlers
11. 15-state Southern obesity summit to focus on deadly epidemic
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/23/2016)... March 23, 2016 ... Sicherheit Gesichts- und Stimmerkennung mit Passwörtern ... (NASDAQ: MESG ), ein führender Anbieter ... Unternehmen mit SpeechPro zusammenarbeitet, um erstmals dessen ... wird die Möglichkeit angeboten, im Rahmen mobiler ...
(Date:3/22/2016)... PROVO and SANDY, ... Screening Ontario (NSO), which operates the highest sample volume ... testing, and Tute Genomics and UNIConnect, leaders in clinical ... today announced the launch of a project to establish ... testing panel. NSO has been contracted ...
(Date:3/18/2016)... LONDON , March 18, 2016 ... Established Suppliers of Biometrics, ICT, Manned & Unmanned Vehicles, Physical ... & security companies in the border security market and ... and Europe has led ... your companies improved success. --> defence & ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... -- Sequenom, Inc. (NASDAQ: SQNM ), a life ... development of innovative products and services, announced today that ... denied its petition to review decisions by ... Patent No. 6,258,540 (",540 Patent") are not patent eligible ... Court,s Mayo Collaborative Services v. Prometheus Laboratories decision.  In ...
(Date:6/27/2016)... Diego, CA (PRWEB) , ... June 27, 2016 , ... ... solutions for clinical trials, announced today the Clinical Reach Virtual Patient Encounter ... their care circle with the physician and clinical trial team. , Using the CONSULT ...
(Date:6/27/2016)... ... June 27, 2016 , ... Rolf K. ... the faculty of the University of North Carolina Kenan-Flagler Business School ... entrepreneurship at UNC Kenan-Flagler, with a focus on the school’s international efforts, leading ...
(Date:6/27/2016)... Ginkgo Bioworks , a leading organism design company ... as one of the World Economic Forum,s Technology ... companies. Ginkgo Bioworks is engineering biology to manufacture ... the nutrition, health and consumer goods sectors. The ... Fortune 500 companies to design microbes for their ...
Breaking Biology Technology: