Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Artificial Antibody Delivers Nanoparticles to Tumors

Abstract:

Back
Nanotech News


January 2009

Artificial Antibody Delivers Nanoparticles to Tumors

Antibodies that target epidermal growth factor receptor (EGFR) have proven themselves as potent anticancer drugs. Now, a team of investigators led by Shuming Nie, Ph.D., and Lily Yang, Ph.D., both at the Emory University School of Medicine and members of the Emory-Georgia Tech Nanotechnology Center for Personalized and Predictive Oncology, is aiming to capitalize on this targeting ability, using a modified anti-EGFR antibody to delivery nanoparticles into tumor cells.

Artificial Antibody Delivers Nanoparticles to Tumors

Bethesda, MD | Posted on January 17th, 2009

Reporting its work in the journal Small, the Emory team describes its use of a so-called single-chain antibody to mimic the tumor-targeting properties of a standard anti-EGFR antibody. Standard antibodies are large biomolecules comprising two pairs of two peptide chains known as heavy and light chains. In part because of their large size, antibodies are difficult to work with and often have difficulty accessing the deeper regions of a solid tumor. To overcome these problems, the investigators built an artificial antibody comprising portions of a single heavy chain and a light chain hooked together. This construct is less than 20% of the size and weight of a full antibody, but it retains the larger molecule's binding abilities for EGFR.

With their artificial antibody in hand, the investigators used it as a tumor-targeting agent for two types of nanoparticles—quantum dots, which can be seen using fluorescence imaging, and iron oxide nanoparticles, which can be imaged using standard magnetic resonance imaging (MRI) instruments. The Emory team attached the targeting agent to the nanoparticles using a novel linking technology they developed for this purpose.

With the two types of antibody-linked nanoparticles in hand, the investigators conducted a series of experiments to determine whether these nanoscale constructs would target tumors and whether tumor cells would take up take the antibody-nanoparticle combos. Indeed, targeted nanoparticles homed in quickly on tumors when injected into tumor-bearing mice, whereas untargeted nanoparticles accumulated primarily in the liver and spleen. The targeted nanoparticles also gained rapid entry into tumor cells, whereas the untargeted nanoparticles did not. The nanoparticles were visible using both fluorescence imaging and MRI.

####

About National Cancer Institute
The NCI Alliance for Nanotechnology in Cancer is a comprehensive, systematized initiative encompassing the public and private sectors, designed to accelerate the application of the best capabilities of nanotechnology to cancer.

Currently, scientists are limited in their ability to turn promising molecular discoveries into benefits for cancer patients. Nanotechnology can provide the technical power and tools that will enable those developing new diagnostics, therapeutics, and preventives to keep pace with today’s explosion in knowledge.

For more information, please click here

Contacts:
National Cancer Institute
Office of Technology & Industrial Relations
ATTN: NCI Alliance for Nanotechnology in Cancer
Building 31, Room 10A49
31 Center Drive , MSC 2580
Bethesda , MD 20892-2580

Copyright © National Cancer Institute

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

View abstract - “Single chain epidermal growth factor receptor antibody conjugated nanoparticles for in vivo tumor targeting and imaging.”

Related News Press

News and information

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

MEMS & Sensors Technology Showcase: Finalists Announced for MEMS Executive Congress US 2014 October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Imaging

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Nanomedicine

NYU Researchers Break Nano Barrier to Engineer the First Protein Microfiber October 23rd, 2014

Iranian Scientists Apply Nanotechnology to Produce Surgery Suture October 23rd, 2014

RF Heating of Magnetic Nanoparticles Improves the Thawing of Cryopreserved Biomaterials October 23rd, 2014

Sopping up proteins with thermosponges: Researchers develop novel nanoparticle platform that proves effective in delivering protein-based drugs October 22nd, 2014

Discoveries

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Announcements

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

NanoNews-Digest
The latest news from around the world, FREE





  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE