Featured Research

from universities, journals, and other organizations

Cystic Fibrosis Research Could Benefit From Multi-functional Sensing Tool

Date:
May 2, 2006
Source:
Georgia Institute of Technology
Summary:
Researchers are using an innovative, multi-functional sensing tool to investigate adenosine triposphate (ATP) release and its role in cystic fibrosis. The ATP study marks the first application of a novel sensing system developed by a research team led by Christine Kranz at the Georgia Institute of Technology.

Postdoctoral fellow Jean-Francois Masson holds a microelectrode modified with a biosensing layer capable of measuring adenosine triphosphate (ATP), a chemical involved in energy transport in humans. (Georgia Tech Photo: Gary Meek)

Researchers are using an innovative, multi-functional sensing tool to investigate adenosine triphosphate (ATP) release and its role in cystic fibrosis. The ATP study marks the first application of a novel sensing system developed by a research team led by Christine Kranz at the Georgia Institute of Technology.

Related Articles


This patented technology adds recessed micro- and nano-electrodes to the tip of an atomic force microscope (AFM), creating a single tool that can simultaneously monitor topography along with electrochemical activity at the cell surface.

Researchers will present information on the research on March 26 at the American Chemical Society's 231st meeting in Atlanta during a session on new approaches in analytical chemistry.

The new multi-functional imaging technique will advance the study of biological samples, said Boris Mizaikoff, an associate professor at Georgia Tech's School of Chemistry and Biochemistry and director of its Applied Sensors Lab. "Conventional AFM can image surfaces, but usually provides limited chemical information," he explained. "And though scanning electrochemical microscopy (SECM), another probing technique, provides laterally resolved electrochemical data, it has limited spatial resolution. By combining AFM and SECM functionality into a single scanning probe, our tool provides researchers with a more holistic view of activities at the cell surface."

In addition to Mizaikoff and Kranz, the team also includes post-doctoral scholar Jean-Francois Masson and graduate student Justyna Wiedemair.

In the ATP study, which is sponsored by the National Institutes of Health and done in collaboration with Douglas Eaton at Emory University's School of Physiology, the Georgia Tech team used the multi-scanning biosensors to study ATP release at the surface of live epithelial cells (cells that cover most glands and organs in the body). ATP, a chemical involved in energy transport, is of interest to medical researchers because elevated levels have been linked with cystic fibrosis, a disease that affects one out of every 2,500 people in the United States.

Using epithelial cell cultures from Emory, the Georgia Tech researchers have demonstrated that their multi-functional biosensors work at the live-cell surface during in vitro studies.

"Before you can identify what triggers the ATP release, we must be able to quantitatively measure the released species at the cell surface," Mizaikoff said, noting that many pathological events involve the disruption of chemical communication and molecular signaling between cells, especially in the nervous system, lungs and kidneys.

Improved understanding of cellular communication can lead to new strategies for treating diseases, Mizaikoff added: "Being able to operate sensors in an electrochemical imaging mode at the micro- and nanoscale is an exciting opportunity for complementing optical imaging techniques. There are many clinical research problems that these biosensors can help with."

During the same ACS session, the Georgia Tech team will also present findings of a related project.

A collaboration with Estelle Gauda at Johns Hopkins University and also supported by NIH grants, this project monitors ATP release at the carotid body. (The carotid body is a chemoreceptor that, among other functions, monitors oxygen content in the blood and helps control respiration.)

Chronic oxygen stress -- too much or too little oxygen during early postnatal development -- can lead to a deficiency in the amount of oxygen reaching body tissues in premature infants and newborn animals. But little is known about how oxygen stress affects regulatory networks and alters chemoreceptors. To gain insights, the Georgia Tech researchers will study ATP, which is among the signaling molecules released by the carotid body.

Researchers incorporate the same technology used for the multi-functional scanning probe. For this study, however, they have tailored the biosensor to work at a larger scale -- microelectrodes are about 25 micrometers in diameter as opposed to the sub-micrometer dimensions of the combined AFM-SECM approach.

"There are a lot of emerging sensor technologies, but few have been adapted for routine use in medical research, which is one of the development goals at the Applied Sensors Lab," Mizaikoff said. "As analytical chemists, we want to develop quantitative sensing devices that can answer important questions for clinical researchers."


Story Source:

The above story is based on materials provided by Georgia Institute of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Georgia Institute of Technology. "Cystic Fibrosis Research Could Benefit From Multi-functional Sensing Tool." ScienceDaily. ScienceDaily, 2 May 2006. <www.sciencedaily.com/releases/2006/05/060501233447.htm>.
Georgia Institute of Technology. (2006, May 2). Cystic Fibrosis Research Could Benefit From Multi-functional Sensing Tool. ScienceDaily. Retrieved October 30, 2014 from www.sciencedaily.com/releases/2006/05/060501233447.htm
Georgia Institute of Technology. "Cystic Fibrosis Research Could Benefit From Multi-functional Sensing Tool." ScienceDaily. www.sciencedaily.com/releases/2006/05/060501233447.htm (accessed October 30, 2014).

Share This



More Matter & Energy News

Thursday, October 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Mind-Controlled Prosthetic Arm Restores Amputee Dexterity

Reuters - Innovations Video Online (Oct. 29, 2014) A Swedish amputee who became the first person to ever receive a brain controlled prosthetic arm is able to manipulate and handle delicate objects with an unprecedented level of dexterity. The device is connected directly to his bone, nerves and muscles, giving him the ability to control it with his thoughts. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Robots Get Funky on the Dance Floor

Robots Get Funky on the Dance Floor

AP (Oct. 29, 2014) Dancing, spinning and fighting robots are showing off their agility at "Robocomp" in Krakow. (Oct. 29) Video provided by AP
Powered by NewsLook.com
Saharan Solar Project to Power Europe

Saharan Solar Project to Power Europe

Reuters - Business Video Online (Oct. 29, 2014) A solar energy project in the Tunisian Sahara aims to generate enough clean energy by 2018 to power two million European homes. Matt Stock reports. Video provided by Reuters
Powered by NewsLook.com
Lowe's Testing Robot Sales Assistants in California Store

Lowe's Testing Robot Sales Assistants in California Store

Buzz60 (Oct. 29, 2014) Lowe’s is testing out what it’s describing as a robotic shopping assistant in one of its Orchard Supply Hardware Stores in California. Jen Markham explains. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

    Technology News



    Save/Print:
    Share:

    Free Subscriptions


    Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

    Get Social & Mobile


    Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

    Have Feedback?


    Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
    Mobile: iPhone Android Web
    Follow: Facebook Twitter Google+
    Subscribe: RSS Feeds Email Newsletters
    Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins