Navigation Links
Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

silica nanoparticle system. Spherical in shape, the particles have arrays of independent porous channels. The channels form a honeycomb-like structure that can be filled with chemicals or molecules.

"One gram of this kind of material can have a total surface area of a football field, making it possible to carry a large payload," Trewyn said.

Lin’s nanoparticle has a unique "capping" strategy that seals the chemical goods inside. In previous studies, his group successfully demonstrated that the caps can be chemically activated to pop open and release the cargo inside of animal cells. This unique feature provides total control for timing the delivery

The team’s first attempt to use the porous silica nanoparticle to deliver DNA through the rigid wall of the plant cell was unsuccessful. The technology had worked more readily in animals cells because they don’t have walls. The nanoparticles can enter animal cells through a process called endocytosis ?the cell swallows or engulfs a molecule that is outside of it. The biologists attempted to mimic that process by removing the wall of the plant cell (called making protoplasts), forcing it to behave like an animal cell and swallow the nanoparticle. It didn’t work.

They decided instead to modify the surface of the particle with a chemical coating.

"The team found a chemical we could use that made the nanoparticle look yummy to the plant cells so they would swallow the particles," Torney said.

It worked. The nanoparticles were swallowed by the plant protoplasts, which are a type of spherical plant cells without cell walls.

Most plant transformation, however, occurs with the use of a gene gun, not through endocytosis. In order to use the gene gun to introduce the nanoparticles to walled plant cells, the chemists made another clever modification on the particle surface. They synthesized even smaller gold particles to cap the nanoparticles. These "golden g
'"/>

Source:Iowa State University


Page: 1 2 3

Related biology news :

1. NC State scientist finds soft tissue in T. rex bones
2. K-State professors discover enzyme responsible for creation of a beetles hard shell
3. NC State researchers redesign life for Mars and beyond
4. K-State researchers study insects immune system
5. K-State researchers study gene regulation in insects
6. K-Staters design and build a low-cost remote sensing tool for environmental studies
7. Iowa State researchers improving plastics made from corn and soy proteins
8. Investment level in HIV prevention programs related to HIV incidence in the United States
9. Iowa State University botanists identify new species of North American bamboo
10. ConocoPhillips establishes $22.5M biofuels research program at Iowa State
11. Wisconsin scientists grow critical nerve cells
Post Your Comments:
(Date:10/16/2014)... land managers have a new synthesis of recent research ... (MMC) forests in the two states. , The ... Oregon and Washington: A Synthesis of the Relevant Biophysical ... technical report published by the U.S. Forest Service,s Pacific ... request from managers for a synthesis of the large ...
(Date:10/16/2014)... are anything but sustainable: environmental damage to soil ... increasingly evident. Despite their disadvantages, however, monocultures remain ... the sole possibility of achieving higher yields in ... an ecology professor at the University of Zurich, ... forestry. After all, a new study carried out ...
(Date:10/16/2014)... Post-menopausal women experienced improvements in vaginal atrophy, with ... bleeding, after 12 weeks of daily 10 milligram ... nutritional supplement previously shown to help relieve certain ... study reported in a poster at the North ... , "These data documented improved vaginal epithelium, without ...
Breaking Biology News(10 mins):New report synthesizes best available science on management of moist mixed-conifer forests 2Plant communities produce greater yield than monocultures 2Plant communities produce greater yield than monocultures 3S-equol supplements associated with improved measures of reproductive health in postmenopausal women 2
... Mentor Award of the American Association for the Advancement ... education and research changes at his institution, leading to ... biological sciences." Tsin, who is a professor of ... Training in the Sciences at the University of Texas ...
... of Philadelphia (CHOP) have developed a unique laboratory ... molecules. The test relies on faster, more comprehensive ... (HLAs)--complex, highly variable proteins on cell surfaces that ... test may improve transplantation outcomes through a more ...
... , NEW YORK, NY (February 12, 2014) A ... by Wellington V. Cardoso, MD, PhD, has found the ... A deficiency and postnatal airway hyperresponsiveness, a hallmark of ... deficit of this essential vitamin while the lung is ...
Cached Biology News:2013 AAAS Lifetime Mentor Award goes to Andrew Tsin of the University of Texas at San Antonio 2CHOP introduces HLA typing by next-generation sequencing to its clinical services 2CHOP introduces HLA typing by next-generation sequencing to its clinical services 3Prenatal vitamin A deficiency tied to postnatal asthma 2Prenatal vitamin A deficiency tied to postnatal asthma 3
(Date:10/20/2014)... , Oct. 20, 2014 Asterias Biotherapeutics, ... Company has signed a Notice of Grant Award ... (CIRM), effective October 1, 2014.  The NGA provides ... and the release of additional grant funds pursuant ... award for clinical development of Asterias, product, AST-OPC1. ...
(Date:10/20/2014)... October 20, 2014 OncLive® ... Kimmel Cancer Center at Thomas Jefferson University has ... Through the Strategic Alliance Partnership program, the Sidney ... collaborate to raise awareness of the Center’s cutting-edge ... other projects. Clinicians and other health care professionals ...
(Date:10/19/2014)... NextCODE Health, which enables clinicians and researchers to ... today announced the launch of its new genomic data analysis ... American Society of Human Genetics (ASHG) annual meeting in ... and apply for free beta access, visit www.nextcode.com . ... be viewed here . The Exchange: ...
(Date:10/19/2014)... The Asian Orthopedic braces and support systems ... analysis and forecast of revenue. The Orthopedic braces and support ... $416.5 million by 2018, at a developing CAGR of 4.4% ... the Asian Orthopedic braces and support systems market, to get ... a glimpse of the segmentation of orthopedic braces and support ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 2Sidney Kimmel Cancer Center at Thomas Jefferson University Partners With OncLive 3The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 2The NextCODE Exchange: The first global, real-time system for sharing full-resolution genomic data 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 2The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 3The Asian Orthopedic braces and support systems market is estimated to grow to around $416.5 million by 2018 - New Report by MicroMarket Monitor 4
... , Multiporator , , , , , , , ... Protocol No. 4308 915.027 11/1999 , , , ... , Cell line , RAW 264.7 ... with , Plasmid pEGFP-N1 (in bidistilled H 2 O), , ...
... , , , , Multiporator / Electroporator 2510 , , , ... Transformation Protocol , Protocol No. 4308 915.527 04/2002 , ... , , , , ... , Cell type , Bacteria, gram ...
... Multiporator , , , , , , , , ... Protocol No. 4308 915.021 11/1999 , , , , , ... , Cell line , NIH 3T3, mouse embryo, ... Plasmid pEGFP-N1 (in bidistilled H 2 O), , ...
Cached Biology Technology:RAW 264.7 2Propionibacterium freudenreichii 2NIH 3T3 2
... Competitor Assay Kits are ideal for ... binding compounds using fluorescence polarization (FP). ... of glutathione transferase to the ligand ... [PR-LBD(GST)] and a proprietary, fluorescently tagged ...
... is critical to the maintenance of ... proteins as important and diverse as ... shock and stress response, antigen presentation, ... ion channels, cell cycle regulation, transcription, ...
... The RapidVUE is a particle shape and size ... been designed with the utmost simplicity in mind. ... delivery module and an optical bench. The system ... for easy upgrade for different applications such as ...
... Serum-Single Donor • Human serum is obtained ... to be negative by a test for ... to Human Immunodeficiency Virus (Anti-HIV 1/2), Hepatitis ... B Surface Antigen (HbsAg) and Non-reactive by ...
Biology Products: