backtop


Print 13 comment(s) - last by ekv.. on Feb 20 at 6:41 PM

New lab-on-a-chip promises to detect pollutants, disease, and biological weapons

Israel, for a very small nation, is always on the cutting edge of military research.  Researchers at Tel Aviv University have developed a new lab-on-a-chip, which may be put to use in a variety of military, security, and medical applications. 

The researchers say that animals have always been the first line of detection for toxins and pollutants, and that even today man-made detection devices fall short of nature's mechanisms.  However, they say their device, the latest entry in the burgeoning field of labs-on-a-chip, may change that by borrowing from nature itself.

The new chips uses tiny light emitting bacteria affixed to the chip's surface.  Prof. Shacham-Diamand describes, “We’ve developed a platform — essentially a micro-sized, quarter-inch square 'lab' — employing genetically engineered bacteria that light up when presented with a stressor in water.”

The chip has tiny light detectors that can tell if the bacteria is lighting up, signaling detection of the target chemical.

As opposed to animal detection, Professor Shacham-Diamand states that his team's design is much safer and more effective.  He adds, "Our system is based on a plastic chip that is more humane, much faster, more sensitive and much cheaper.  Basically, ours is an innovative advance in the ‘lab on a chip’ system.  It’s an ingenious nano-scale platform designed to get information out of biological events. Our solution can monitor water with never-before-achieved levels of accuracy. But as a platform, it can also be used for unlimited purposes, such as investigating stem cell therapies or treating cancer."

The university is currently tweaking its water-testing mini-labs to measure the response of various strains of genetically engineered bacteria to toxins or pathogens in the water, such as E. Coli bacteria.  The state of Hawaii and multiple cities in Israel have expressed interest in the project.

The researchers are also engineering bacteria which detect biological weapons.  This line of work is funded by a United States Department of Defense Projects Agency (DARPA) to the tune of $3M USD. 

A third line of work is cancer detection.  Professor Shacham-Diamand presented his research to 400 physicians at a World Cancer Conference recently, and is now collaborating with them to develop new bacteria chips to test for cancer indicators.  He states, "They need sensors like Tel Aviv University’s lab on a chip. It’s a hot topic now."

Whether it comes to medicine or to the military, the new living lab-on-a-chip seems to have great potential to create cutting edge sensors.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

well...
By Moishe on 2/20/2009 8:48:32 AM , Rating: 1
That's pretty ingenious.

It almost sounds like you'd need one chip for each target material...? Surely not. If you can just use one chip to target all known bad particles then they should put those chips everywhere and hook them up to a monitored system.




RE: well...
By Steve1981 on 2/20/2009 8:51:54 AM , Rating: 2
Certainly seems like a good way to monitor our water supply.


RE: well...
By Seemonkeyscanfly on 2/20/2009 10:20:19 AM , Rating: 2
Yes, you are correct. The portable version is called a Triquarter. They are very handy.


RE: well...
By ekv on 2/20/2009 6:41:46 PM , Rating: 3
uh, excuse me, but did you mean a Tricorder ?

http://en.wikipedia.org/wiki/Tricorder


RE: well...
By grath on 2/20/2009 11:40:34 AM , Rating: 2
quote:
It almost sounds like you'd need one chip for each target material...?


They probably still do. These are genetically engineered bacteria they are using, and its probably much easier to engineer them to detect a single agent, or a group of similar agent, rather than every agent. Trying to engineer a strain that detects everything would probably generate false positives, be much more expensive, and be harder to upgrade for new threats.


“We do believe we have a moral responsibility to keep porn off the iPhone.” -- Steve Jobs














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki