Navigation Links
New sensor array detects single molecules for the first time
Date:3/7/2010

CAMBRIDGE, Mass. MIT chemical engineers have built a sensor array that, for the first time, can detect single molecules of hydrogen peroxide emanating from a single living cell.

Hydrogen peroxide has long been known to damage cells and their DNA, but scientists have recently uncovered evidence that points to a more beneficial role: it appears to act as a signaling molecule in a critical cell pathway that stimulates growth, among other functions.

When that pathway goes awry, cells can become cancerous, so understanding hydrogen peroxide's role could lead to new targets for potential cancer drugs, says Michael Strano, leader of the research team. Strano and his colleagues describe their new sensor array, which is made of carbon nanotubes, in the March 7 online edition of Nature Nanotechnology.

Strano's team used the array to study the flux of hydrogen peroxide that occurs when a common growth factor called EGF activates its target, a receptor known as EGFR, located on cell surfaces. For the first time, the team showed that hydrogen peroxide levels more than double when EGFR is activated.

EGF and other growth factors induce cells to grow or divide through a complex cascade of reactions inside the cell. It's still unclear exactly how hydrogen peroxide affects this process, but Strano speculates that it may somehow amplify the EGFR signal, reinforcing the message to the cell. Because hydrogen peroxide is a small molecule that doesn't diffuse far (about 200 nanometers), the signal would be limited to the cell where it was produced.

The team also found that in skin cancer cells, believed to have overactive EGFR activity, the hydrogen peroxide flux was 10 times greater than in normal cells. Because of that dramatic difference, Strano believes this technology could be useful in building diagnostic devices for some types of cancer.

"You could envision a small handheld device, for example, which your doctor co
'/>"/>

Contact: Jennifer Hirsch
jfhirsch@mit.edu
617-253-1682
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2

Related biology news :

1. Louisiana Tech researchers investigate tracking, sensors to assist Air Force
2. UCLA/VA partners with ASU to advance biosensor technology for urinary tract infections
3. New microsensor measures volatile organic compounds in water and air on-site
4. New field-deployable biosensor detects avian influenza virus in minutes instead of days
5. bioMETRX, Inc. Announces Integration of AuthenTec Fingerprint Sensor in smartTOUCH(TM) Product Line
6. MIT gas sensor is tiny, quick
7. Material Technologies Holds First Electrochemical Fatigue Sensor Training for Private Inspection Firms
8. Carnegie Mellon scientists develop fluorescent proteins for live cell imaging, biosensor design
9. Atmel Receives Frost & Sullivans Technology Innovation Award for FingerChip(R) Biometric Sensor
10. New cell-based sensors sniff out danger like bloodhounds
11. New gas sensors for monitoring carbon dioxide sinks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/20/2015)... 20, 2015 The announcement comes ... Glenbeigh Records Management (GRM), Ireland,s foremost ... Bank. Having built up an impressive track record of clients ... player within the records management sector in Dubai ... is GCC staffbase and employ a further eight staff members ...
(Date:4/13/2015)... 2015 According to a ... Market Forecast & Opportunities, 2020", the global biometrics market ... 14% till 2020. The biometrics market is garnering ... and review of biometric management systems. The constant ... with greater efficiency, are resulting in increasing installation ...
(Date:4/8/2015)... , April 8, 2015  Infinisource, a ... and services, and Morpho, a leading supplier of ... to produce the market,s most advanced biometrically-enabled time ... iSolved NXG time clock is setting a bold, ... labor data for the small and mid-size employer. ...
Breaking Biology News(10 mins):Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 2Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 3Global Biometrics Market to Cross US$ 21 Billion by 2020: TechSci Research 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3
... by the Duke-NUS Graduate Medical School (Duke-NUS) in Singapore ... key protein linked to stem cell-like behavior in terminal-stage ... drugs that may extend the survival of these patients. ... Proceedings of the National Academy of Sciences , ...
... to reduce by more than half the time it takes ... researchers in Penn State,s College of Agricultural Sciences. The finding ... foodborne illness, allowing epidemiological investigators to identify the exact strains ... more quickly find -- and eliminate -- the source of ...
... long been used for various purposes, like cleaning wastewater at ... handcrafted wickerwork, as means of nutrition and, in traditional medicine, ... Fraunhofer Institute for Building Physics IBP in Valley now want ... to wit, for the insulation of outer walls or ...
Cached Biology News:Singapore research team identifies new drug target in deadly form of leukemia 2Researchers develop a faster method to identify Salmonella strains 2Researchers develop a faster method to identify Salmonella strains 3Using cattails for insulation 2Using cattails for insulation 3
(Date:4/24/2015)... Telbec/ - Mirego, leader in mobile strategies and solutions, is ... app extensions for the all new Apple Watch. Made in ... and MediaMiser, these extensions will reinvent the way users receive ... wrist use.  Available today in ... tactile smartwatch that makes for an excellent buddy for business, ...
(Date:4/23/2015)... 24, 2015 Ralco announced today that ... Nutrition® (ABN) for the exclusive worldwide rights to sell ... technology is a new in-line milk system that increases ... them to move supplementation milk cups within a farrowing ... “This technology lets producers get Birthright™ milk to the ...
(Date:4/23/2015)... Fla. , April 23, 2015 BioTE ... releases his book "Age Healthier Live Happier - Avoiding ... off the Age Management Medicine Group Conference at JW ... 26, 2015. ",Age Healthier Live Happier, is ... to avoid over-medication and searching for a higher quality ...
(Date:4/23/2015)... 2015 Follow us on ... series of genetic tests that determine individual susceptibility ... disease, Huntington's disease, and Alzheimer's disease. Predictive diagnostics ... and interaction in diseased tissue/cells to understand and ... the response to treatment, such as in the ...
Breaking Biology Technology:Familiprix, OMSignal and MediaMiser apps available today for Apple Watch 2Ralco Acquires License to Birthright™ Moveable Milk Cup 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 2Release and Book Signing of BioTE Medical President Gary Donovitz M.D. 'Age Healthier Live Happier' at Age Management Medicine Group (AMMG) Conference 3Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 2Increasing Disease Prevalence & Focus on Preventive Healthcare Drive the Predictive Diagnostics Market, According to a New Report by Global Industry Analysts, Inc. 3
... Scientists engaged in biological research and drug discovery are ... BioInformatics, LLC ( www.gene2drug.com ), the premier research ... released preliminary data from the company,s newest report ... Science Suppliers. In this report, we set out ...
... LOUIS, Feb. 11 Sigma-Aldrich, a leading Life,Science and High ... by 6% to $0.68 from $0.64 in the same quarter ... $510 million in the fourth quarter 2008 declined by 4%,compared ... fourth,quarter grew 3% from a year ago. Fourth quarter organic ...
... Development for Chronic Pain IndicationsLA JOLLA, Calif., Feb. ... TPTX ) today announced that oral administration of ... and well-tolerated in healthy male and female subjects ... successful completion of this Phase I trial demonstrating ...
Cached Biology Technology:Life Science Labs Reacting to the Economic Crisis 2Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 2Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 3Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 4Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 5Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 6Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 7Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 8Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 9Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 10Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 11Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 12Sigma-Aldrich (Nasdaq: SIAL) Reports Fourth Quarter Diluted EPS of $0.68. Ends 2008 With Record Sales and Earnings and Raises Quarterly Cash Dividend by 11.5%. Provides Outlook for 2009. 13First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 2First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 3First Multiple Dose Clinical Trial of TorreyPines Therapeutics' Oral Compound NGX426 Demonstrates Compound Is Safe and Well-Tolerated 4
ELF® 97 Immunohistochemistry Kit...
albumin from bovine serum (BSA), Alexa Fluor® 647 conjugate...
Superior homology search software - in all the flavours of blast, with increased sensitivity and speed. Free windows version for academic use....
... bovine, porcine, rat) ... antagonist. This carboxy-terminal VIP fragment ... more potent than any previously ... Storage: Desiccate ...
Biology Products: