Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Searching for errors in the quantum world September 21st, 2018

Viral RNA sensing: Optical detection of picomolar concentrations of RNA using switches in plasmonic chirality September 21st, 2018

UT engineers develop first method for controlling nanomotors: Breakthrough for nanotechnology as UT engineers develop first method for switching the mechanical motion of nanomotors September 21st, 2018

Nanobiotix: Update on Head and Neck Phase I/II Trial with NBTXR3 and Other program data presented at ImmunoRad 2018 September 20th, 2018

Govt.-Legislation/Regulation/Funding/Policy

UT engineers develop first method for controlling nanomotors: Breakthrough for nanotechnology as UT engineers develop first method for switching the mechanical motion of nanomotors September 21st, 2018

Researchers develop microbubble scrubber to destroy dangerous biofilms September 19th, 2018

Researchers managed to prevent the disappearing of quantum information September 14th, 2018

New photonic chip promises more robust quantum computers September 14th, 2018

Nanomedicine

Viral RNA sensing: Optical detection of picomolar concentrations of RNA using switches in plasmonic chirality September 21st, 2018

UT engineers develop first method for controlling nanomotors: Breakthrough for nanotechnology as UT engineers develop first method for switching the mechanical motion of nanomotors September 21st, 2018

Nanobiotix: Update on Head and Neck Phase I/II Trial with NBTXR3 and Other program data presented at ImmunoRad 2018 September 20th, 2018

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Discoveries

Searching for errors in the quantum world September 21st, 2018

Viral RNA sensing: Optical detection of picomolar concentrations of RNA using switches in plasmonic chirality September 21st, 2018

UT engineers develop first method for controlling nanomotors: Breakthrough for nanotechnology as UT engineers develop first method for switching the mechanical motion of nanomotors September 21st, 2018

NUS researchers invent new test kit for quick, accurate and low-cost screening of diseases: Test results are denoted by a color change and could be further analyzed by a smartphone app, making it attractive as a point-of-care diagnostic device September 19th, 2018

Announcements

Searching for errors in the quantum world September 21st, 2018

Viral RNA sensing: Optical detection of picomolar concentrations of RNA using switches in plasmonic chirality September 21st, 2018

UT engineers develop first method for controlling nanomotors: Breakthrough for nanotechnology as UT engineers develop first method for switching the mechanical motion of nanomotors September 21st, 2018

Nanobiotix: Update on Head and Neck Phase I/II Trial with NBTXR3 and Other program data presented at ImmunoRad 2018 September 20th, 2018

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project