Navigation Links
Self-assembled DNA buckyballs for drug delivery

DNA isn't just for storing genetic codes any more. Since DNA can polymerize -- linking many molecules together into larger structures -- scientists have been using it as a nanoscale building material, constructing geometric shapes and even working mechanical devices.

Now Cornell University researchers have made DNA buckyballs -- tiny geodesic spheres that could be used for drug delivery and as containers for chemical reactions.

The term "buckyballs" has been used up to now for tiny spherical assemblies of carbon atoms known as Buckminsterfullerenes or just fullerenes. Under the right conditions, carbon atoms can link up into hexagons and pentagons, which in turn assemble into spherical shapes (technically truncated icosahedrons) resembling the geodesic domes designed by the architect-engineer Buckminster Fuller. Instead of carbon, the Cornell researchers are making buckyballs out of a specially prepared, branched DNA-polystyrene hybrid. The hybrid molecules spontaneously self-assemble into hollow balls about 400 nanometers (nm) in diameter. The DNA/polystyrene "rods" forming the structure are each about 15 nm long. (While still on the nanoscale, the DNA spheres are much larger than carbon buckyballs, which are typically around 7 nm in diameter.)

About 70 percent of the volume of the DNA buckyball is hollow, and the open spaces in the structure allow water to enter. Dan Luo, Cornell assistant professor of biological and environmental engineering in whose lab the DNA structures were made, suggests that drugs could be encapsulated in buckyballs to be carried into cells, where natural enzymes would break down the DNA, releasing the drug. They might also be used as cages to study chemical reactions on the nanoscale, he says.

The nanoscale, hollow buckyballs are also the first structures assembled from "dendrimerlike DNA." If three strands of artificial DNA are created such that portions of each strand are complementary to portions of ano
'"/>

Source:Cornell University News Service


Page: 1 2 3

Related biology news :

1. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
2. New self-exploding microcapsules could take sting out of drug delivery
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Self assembled DNA buckyballs for drug delivery

(Date:12/17/2014)... Dec. 15, 2014 Research and Markets ... of the "Samsung Galaxy S5 - Home ... to their offering. ... different sensing technology than the iPhone 5S, Samsung ... in its product. The Galaxy S5 ...
(Date:12/17/2014)... 2014 Research and Markets ( ... "Global Chemical Sensor Market 2015-2019" report ... http://photos.prnewswire.com/prnh/20130307/600769 One major trend upcoming ... medical sensors in biomedical applications. Chemical sensors help ... correct diagnosis during surgical procedures. The Global Chemical ...
(Date:12/11/2014)... Research and Markets , ... http://www.researchandmarkets.com/research/9ql3kr/biometrics_market ) has announced the addition of the ... to their offering. One major ... of multimodal biometric systems. Multimodal biometric systems utilize ... verification and identification purposes. This helps to reduce ...
Breaking Biology News(10 mins):Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2Biometrics Market in India 2015-2019: Key Vendors are 3M Cogent, NEC, Safran and Suprema 2
... to be particularly prone to global warming caused by ... greenhouse gases. Now, a University of Utah study finds ... north: the Arctic's well-known haze ?made of particulate pollution ... better able to trap heat. , The effect makes ...
... dioxide from fossil fuel burning are dramatically altering ... that secrete skeletal structures and support oceanic biodiversity. ... effects of increased atmospheric carbon dioxide on these ... research for determining the extent of the impacts. ...
... stem cells, prized for their astonishing ability to apparently transform ... identities in part by interacting with their surroundings - even ... dish, University of Florida scientists report. , Using an animal ... Brain Institute have begun to answer one of the most ...
Cached Biology News:Pollutant haze heats the Arctic 2Pollutant haze heats the Arctic 3Pollutant haze heats the Arctic 4Report warns about carbon dioxide threats to marine life 2Report warns about carbon dioxide threats to marine life 3Medium is the message for stem cells in search of identities 2Medium is the message for stem cells in search of identities 3
(Date:12/24/2014)... Dec. 24, 2014  Vermillion, Inc. (Nasdaq:   ... disease, announced today that the Company closed its ... Investment Management, Jack W. Schuler , Birchview ... were $10.5 million, before offering expenses.  The proceeds ... corporate purposes. Under the terms of ...
(Date:12/24/2014)... GMO corn cases filed across the ... in the process of being consolidated in a Kansas ... In Re: Syngenta AG MIR 162 Corn Litigation, MDL ... District of Kansas. , Management of the Syngenta GMO ... U.S. District Judge John W. Lungstrum.* , As a ...
(Date:12/24/2014)... Bethesda, MD (PRWEB) December 23, 2014 ... signed into law H.R. 83, the Omnibus and ... the first time, made hydrocephalus a condition eligible ... Research Programs (CDMRP) administered by the Department of ... conjunction with its allies on Capitol Hill, is ...
(Date:12/24/2014)... December 23, 2014 Nashville Fertility Center ... elected treasurer for the American Society for Reproductive Medicine ... and research in reproductive medicine. In his new ... on the executive board and will have a voice ... Hill has actively supported ASRM since 1984 when he ...
Breaking Biology Technology:Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3Carey Danis & Lowe Reports on Syngenta GMO Corn Transfer Order 2Rare Brain Condition Now Eligible for Department of Defense Research Dollars 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 2Nashville Fertility Center Announces Dr. George A. Hill Selected to Serve as ASRM Treasurer for 2014-15 3
... PALO ALTO, Calif., Feb. 20 CV Therapeutics, Inc. ... board of directors has thoroughly reviewed and rejected the ... acquire CV Therapeutics at a price of $16.00 per ... its independent financial and legal advisors, the CV Therapeutics ...
... Nyenrode Business,Universiteit has awarded a Honorary Doctoral degree ... microeconomics, competitive strategy and cluster,theory. Professor Porter is ... of strategy and the world,s most influential thought ... Professor Porter will receive,the Honorary Doctorate on Wednesday ...
... $0.90 to $1.10 for 2009 and $1.50 to $1.70 for 2010PITTSBURGH, ... announced its financial results for the three and twelve months ended ... to $1.10 for 2009 and $1.50 to $1.70 for 2010. , ... Adjusted diluted EPS of $0.26 and $0.80 ...
Cached Biology Technology:CV Therapeutics' Board of Directors Rejects Astellas Unsolicited Proposal 2CV Therapeutics' Board of Directors Rejects Astellas Unsolicited Proposal 3CV Therapeutics' Board of Directors Rejects Astellas Unsolicited Proposal 4Nyenrode Honorary Doctorate for Professor Michael E. Porter 2Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 2Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 3Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 4Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 5Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 6Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 7Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 8Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 9Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 10Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 11Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 12Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 13Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 14Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 15Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 16Mylan Reports Adjusted Diluted EPS of $0.26 for the Quarter Ended Dec. 31, 2008, and Adjusted Diluted EPS of $0.80 for the Year Ended Dec. 31, 2008 17
... ImmEdge Pen, a hydrophobic barrier pen for ... for use with frozen or paraffin-embedded tissue ... Pen provides a heat-stable, water-repellent barrier that ... sections, prevents mixing of reagents when differentially ...
... Covance's BCIP/NBT Chromogen system ... Tetrazolium] chromogen in a single ... reacts in the presence of ... purple staining with minimal background ...
... CellBIND surface is produced by a patented ... surface giving more consistent, even cell attachment, ... cell attachment and growth uunder difficult conditions, ... CellBIND may provide a more ecominic alternative ...
SphingoStripsTM contain fifteen different biologically active, nitrocellulose-immobilized lipids at 100 pmol per spot, which can be assayed for protein binding and specificity using a simple blot ove...
Biology Products: