Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Inhaled Nanoparticles Deliver Potent Anticancer Cocktail to Lung Tumors and Block Resistance

Abstract:
An ideal treatment for lung cancer would be one that could be inhaled deep into lung tissue where it would deliver tumor-killing agents that would then largely stay in the lungs, avoiding the toxicities that limit the effectiveness of today's lung cancer therapies. Now, researchers at Rutgers, The State University of New Jersey, have developed an inhalable porous silica nanoparticle that not only delivers potent anticancer drugs only to non-small cell lung tumors, but also delivers agents that prevent the development of drug resistance.

Inhaled Nanoparticles Deliver Potent Anticancer Cocktail to Lung Tumors and Block Resistance

Bethesda, MD | Posted on November 17th, 2011

Reporting its work in the Journal of Drug Targeting, a research team headed by Tamara Minko showed that a targeted silica nanoparticle was effective at getting a cocktail of drugs into lung tumors in animals and triggering cancer cell death. The inhaled nanoparticles largely remaining in the lungs, with a small amount accumulating in the liver and kidneys, the organs that are typically involved in excreting nanoparticles and other administered compounds.

Minko and her colleagues began this project by first developing mesoporous silica nanoparticles that could effectively deliver a mixture of traditional anticancer drugs and siRNA molecules specifically to lung cancer cells. The investigators chose mesoporous silica nanoparticles for two reasons - their pore size makes them ideal for delivering large loads of different types of molecules and they are biocompatible.

The researchers chose the anticancer agents doxorubicin and cisplatin, used today to treat lung cancer, as the primary tumor killing agents. They then designed two siRNA molecules to stop the development of drug resistance that develops during conventional anticancer treatment. One siRNA molecule would block tumor cell production of a drug pump that they use to expel anticancer agents, while the other siRNA would limit production of a protein that tumor cells use to prevent the programmed cell death, or apoptosis, that doxorubicin and cisplatin normally triggers.

To target the nanoparticles to lung tumors, the researchers added a molecule known as LHRH to the surface of the nanoparticle. LHRH binds to a receptor that is produced at high levels by many types of cancers, including lung cancers.

Tests with non-small cell lung tumor cells demonstrated that this complex formulation was highly effective at killing the cells and preventing the expression of the two types of drug resistance responses normally seen. Tests in animals showed that nearly three quarters of the inhaled nanoparticles remained in the lungs and were taken up by tumor cells. In this study, the researchers did not measure efficacy in killing tumors in the animals.

####

About The National Cancer Institute (NCI)
To help meet the goal of reducing the burden of cancer, the National Cancer Institute (NCI), part of the National Institutes of Health, is engaged in efforts to harness the power of nanotechnology to radically change the way we diagnose, treat and prevent cancer.

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 © The National Cancer Institute (NCI)

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 - "Innovative strategy for treatment of lung cancer: targeted nanotechnology-based inhalation co-delivery of anticancer drugs and siRNA."

Related News Press

News and information

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Govt.-Legislation/Regulation/Funding/Policy

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Switching to spintronics: Berkeley Lab reports on electric field switching of ferromagnetism at room temp December 17th, 2014

ORNL microscopy pencils patterns in polymers at the nanoscale December 17th, 2014

Nanomedicine

Creation of 'Rocker' protein opens way for new smart molecules in medicine, other fields December 18th, 2014

Iranian Researchers Produce Electrical Pieces Usable in Human Body December 18th, 2014

Unraveling the light of fireflies December 17th, 2014

First Home-Made Edible Herbal Nanodrug Presented to Pharmacies across Iran December 17th, 2014

Discoveries

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

Announcements

Atom-thick CCD could capture images: Rice University scientists develop two-dimensional, light-sensitive material December 20th, 2014

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 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