Navigation Links
Photonic crystal biosensors detect protein-DNA interactions
Date:9/23/2008

CHAMPAIGN, Ill. Scientists at the University of Illinois have developed a new class of disposable, microplate-based optical biosensors capable of detecting protein-DNA interactions. Based on the properties of photonic crystals, the biosensors are suitable for the rapid identification of inhibitors of protein-nucleic acid and protein-protein interactions.

"Protein-DNA interactions are essential for fundamental cellular processes such as transcription, DNA damage repair and apoptosis," said Paul Hergenrother, a professor of chemistry and an affiliate of the university's Institute for Genomic Biology. "Screening for compounds that inhibit particular kinds of protein-DNA binding is a very important step in drug development."

Developed by Brian Cunningham, a U. of I. professor of electrical and computer engineering, the photonic crystal biosensors consist of a low-refractive-index polymer grating coated with a film of high-refractive-index titanium oxide, attached to the bottom of a standard 384-well microplate. Each well functions as a tiny test tube with a biosensor in the bottom.

"First, we selectively attach a biomolecule, such as DNA, to the bottom of each well. Then we see how that biomolecule interacts with other molecules, including drugs," said Cunningham, who also is affiliated with the university's Beckman Institute, Micro and Nanotechnology Laboratory, and Institute for Genomic Biology.

By examining the light reflected from the photonic crystal, the researchers can tell when molecules are added to, or removed from, the crystal surface. The measurement technique can be used, for example, in a high-throughput screening mode to rapidly identify molecules and compounds that prevent DNA-protein binding.

The researchers demonstrated the new technology by examining two very different protein-DNA interactions. The first was the bacterial toxin-antitoxin system MazEF, which binds to DNA in a sequence-specific manner and is
'/>"/>

Contact: James E. Kloeppel
kloeppel@uiuc.edu
217-244-1073
University of Illinois at Urbana-Champaign
Source:Eurekalert

Page: 1 2

Related biology news :

1. The photonic beetle
2. Scientists demonstrate the sharpest measurement of ice crystals in clouds
3. Crystal (eye) ball: Study says visual system equipped with future seeing powers
4. New clues to how proteins dissolve and crystallize
5. Scientists find missing evolutionary link using tiny fungus crystal
6. Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth
7. Unveiling the structure of microcrystals
8. Researchers develop liquid crystal pharmaceuticals to fight cancer and other diseases
9. Enzyme detectives uncover new reactions, products
10. Researchers study facial structures, brain abnormalities to reveal formula for detection of autism
11. Best code for disease detection, bar none
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... , Nov. 20, 2014 C-Labs LLC, ... the Internet of Things (IoT), today announced the appointment ... chief operating officer. Previously a strategic advisor to the ... and operations. Mr. Traynor is based out of the ... He reports to Chris Muench , Chief Executive ...
(Date:11/18/2014)... 2014  The Secure Identity & Biometrics Association ... announce the formation of The Airport Entry and ... Identity and Biometric Entry and Exit Solutions Framework ... support from BORDERPOL, the international non-profit organization that ... expertise regarding border security, traveler and migration systems. ...
(Date:11/18/2014)... BETHESDA, Md. , Nov. 17, 2014 The ... European and U.S. regulatory agencies will speak and at least ... Quality Metrics Conference at the Omni Shoreham Hotel in ... is pleased once again to have significant support from the ... and Europe in our effort to ...
Breaking Biology News(10 mins):C-Labs Names Former Microsoft and Bsquare Executive as Chief Operating Officer 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... a serious environmental, economic and social problem worldwide as ... ecosystem functions, such as nutrient cycling. Despite substantial research, ... new habitats over native plants that technically should have ... is that these plants are more abundant in introduced ...
... Invasive plant species are a serious environmental, economic ... lost native biodiversity and ecosystem functions, such as nutrient ... about why some species dominate new habitats over native ... common but rarely tested assumption, say biologists, is that ...
... (Feb. 1, 2011) -- Rice University bioengineers and physician-scientists ... have successfully destroyed tumors of human brain cancer cells ... treatment that zaps glioma tumors with heat. The tests ... tumors with heat and avoid the unwanted side effects ...
Cached Biology News:Home and away: How do invasive plant species dominate native species? 2Home and away: Are invasive plant species really that special? 2Early tests find nanoshell therapy effective against brain cancer 2
(Date:12/17/2014)... 2014 Once more, EMAAR has ... packaged waste water treatment plant to phase one of ... (KAEC). Two years ago Bioshaft successfully supplied and operated ... two residential towers with an occupancy of 900 residences. ... million gallons per day and was signed on September ...
(Date:12/17/2014)... AUSTIN, Texas , Dec. 16, 2014  Vermillion, ... company focused on gynecologic disease, today announced the next ... into a premier bio-analytics solutions provider with the naming ... to President and Chief Executive Officer, while current Chairman ... will continue to serve as Chairman. These changes are ...
(Date:12/15/2014)... December 15, 2014 METTLER TOLEDO ... PVM tool, ParticleView V19 with PVM technology ... probe-based particle vision and measurement tool continuously captures ... conditions. ParticleView V19 then automatically prepares a report ... particle size and concentration changes. This compelling blend ...
(Date:12/15/2014)... 15, 2014  Ascendis Pharma A/S, a biotechnology ... address significant unmet medical needs, today announced positive ... pediatric study to evaluate once-weekly TransCon Growth Hormone ... This interim analysis consists of 25 patients, representing ... the study, completing all six months of treatment. ...
Breaking Biology Technology:Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 2Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 3Vermillion Names Valerie Palmieri CEO; James LaFrance to continue as Chairman of Board 4New Real-Time In Situ Probe-Based Video Microscope from METTLER TOLEDO 2Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 2Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 3Ascendis Pharma A/S Announces Positive Six-Month Interim Results from a Phase 2 Pediatric Study of Once-Weekly TransCon Growth Hormone for the Treatment of Growth Hormone Deficiency 4
... p.m. PT ... (5:00 p.m. ET), IRVINE, Calif., ... CO-Oximetry and,Measure-Through-Motion- and-Low-Perfusion pulse oximetry, today announced,it will release third quarter financial ... Monday, October 27, 2008., A conference call to review the results ...
... Calif., Oct. 15 SuperGen, Inc.,(Nasdaq: SUPG ... and,development of novel cancer therapies, today announced the ... EORTC-NCI-AACR Symposium on "Molecular,Targets and Cancer Therapeutics" on ... will review clinical and non-clinical advances,in the following ...
... SourceSolution, a leader in,search technology for the biotechnology ... target to launch a new initiative next month,which ... manufacturing and,research organizations (CMOs/CROs). The proprietary technology will ... Service (SaaS) database. The,database will allow users to ...
Cached Biology Technology:Masimo to Report Third Quarter 2008 Financial Results on October 27, 2008 2SuperGen to Present Data at EORTC-NCI-AACR 2SourceSolution Announces the Launch of Its Initiative to Simplify Outsourcing Decisions for Biotechnology and Pharmaceutical Companies 2