HOME >> BIOLOGY >> NEWS
Carbon nanotube absorption measured in worms, cancer cells

ANN ARBOR, Mich.---University of Michigan researchers have discovered how to measure the absorption of multi-walled carbon nanoparticles into worms and cancer cells, a breakthrough that will revolutionize scientists' understanding of how the particles impact the living environment.

A team led by U-M chemical engineering professor Walter J. Weber Jr. tagged multi-walled carbon nanotubes---one of the most promising nanomaterials developed to date---with the carbon-14 radioactive isotope, which enabled the nanotubes to be tracked and quantified as they were absorbed into living cells. Researchers used cancer cells called HeLa cells, and also measured nanotube uptake in an earthworm and an aquatic type of worm.

The findings were presented Sunday at the 231st American Chemical Society National Meeting in Atlanta. Co-authors of the presentation are graduate student Elijah Petersen and postdoctoral research assistant Qingguo Huang.

Carbon nanotubes were discovered in 1991, and hold great promise in several areas, including pharmacology and for hydrogen storage in fuel cells, Weber said. But despite their promise, a big problem is that it's not known how multi-walled carbon nanotubes will impact the living environment, Weber said.

"While everyone is concerned about this issue, there has been no really adequate way before this development to examine the extent to which they may get into human cells, and what will result if they do," Weber said. "Nobody has been able to do quantitative research on this because no method to measure them has existed until now. We were able to detect them, but had no way to determine how much was there."

In tagging the nanotubes with the isotope, researchers found that about 74 percent of the nanotubes added to a culture of cancer cells were assimilated by the cells after 15 minutes, and 89 percent of nanotubes assimilated after six hours, according to the paper. And the uptake was nearly irreversible,
'"/>

Contact: Laura Bailey
baileylm@umich.edu
734-647-7087
University of Michigan
28-Mar-2006


Page: 1 2

Related biology news :

1. Tough tubes -- Carbon nanotubes endure heavy wear and tear
2. Carbon dioxide and the ocean
3. Carbon monoxide protects mice from multiple sclerosis
4. Carbon monoxide protects lung cells against oxygen-induced damage
5. On the cutting edge: Carbon nanotube cutlery
6. Carbon capture, water filtration, other boreal forest ecoservices worth estimated $250 billion/year
7. Carbon monoxide may help prevent debilitating pregnancy condition
8. Carbon cycle was already disrupted millions of years ago
9. Carbon monoxide inhibitor controls traumatic bleeding, Tulane University researchers show
10. Carbon nanotubes that detect disease-causing mutations developed by Pitt researcher
11. Carbon nanoparticles stimulate blood clotting, researchers report

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Carbon nanotube absorption measured worms cancer cells

(Date:7/31/2014)... hidden hazard lurks beneath many of the roughly ... The hazard is corrosion in parts of underground ... leaks and contamination of groundwater, a source of ... nine states have reported many rapidly corroding gas ... incidents are generally associated with use of gasoline-ethanol ...
(Date:7/31/2014)... 2014 -- Do people make a rational choice to ... that way? Is it a matter of genetics?, Two ... colleague from Rice University say that neither conscious decision-making ... left while others lean right. , A growing body ... are at the core of political differences, the researchers ...
(Date:7/31/2014)... was in full fury, raging swiftly from crown to ... of Yosemite National Park in California,s Sierra Nevada in ... began to turn, enacting a case study in the ... large, severe fires. , "When the Rim Fire hit ... been used as a management tool, rather than immediately ...
Breaking Biology News(10 mins):NIST corrosion lab tests suggest need for underground gas tank retrofits 2Scientists find growing consensus: Political attitudes derive from body and mind 2The Rim Fire 1 year later: A natural experiment in fire ecology and management 2The Rim Fire 1 year later: A natural experiment in fire ecology and management 3The Rim Fire 1 year later: A natural experiment in fire ecology and management 4The Rim Fire 1 year later: A natural experiment in fire ecology and management 5
(Date:8/1/2014)... (PRWEB) August 01, 2014 RURO, ... Solutions provider, today officially announces the opening of ... Boji Science Park, Baoshan District in Shanghai, PRC, ... is under the management of Mr. Shen Gang, ... In the past three years, RURO’s has installed ...
(Date:8/1/2014)... York , August 1, 2014 ... Transparency Market Research "Biophotonics Market - Global Industry Analysis, ... the market was valued at USD 25.16 billion in ... by 2020, growing at a CAGR of 10.4% from ... Market Report at  http://www.transparencymarketresearch.com/biophotonics-market.html Increasing demand ...
(Date:8/1/2014)... , Aug. 1, 2014 Glencoe ... launch of "Data InPress" ( http://glencoesoftware.com/data-inpress.html ), ... integrating multidimensional image data into on-line publications.  ... and Video Injection Service. Photo ... http://photos.prnewswire.com/prnh/20140731/132409 The ...
(Date:7/31/2014)... Nearly 20,000 medical professionals and healthcare leaders ... Clinical Lab Expo in Chicago ... diagnostic research and technology that will advance medicine and ... of Wednesday, July 30, more than 19,500 attendees had ... Lab Expo, with more than 10,000 of these attendees ...
Breaking Biology Technology:RURO Opens Office in Shanghai, China 2Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 2Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 3Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 4Glencoe Software Launches Data InPress 2Glencoe Software Launches Data InPress 3Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 2Research on Digital Health, Alzheimer's, Ebola Draws Nearly 20,000 Attendees to 2014 AACC Annual Meeting & Clinical Lab Expo 3
Cached News: