Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > UGA researchers use nanoparticles to enhance chemotherapy

Shanta Dhar (center), Rakesh Pathak (right) and Sean Marrache have developed a new formulation of cisplatin, a common chemotherapy drug, that significantly increases the drug's ability to target and destroy cancerous cells.
Shanta Dhar (center), Rakesh Pathak (right) and Sean Marrache have developed a new formulation of cisplatin, a common chemotherapy drug, that significantly increases the drug's ability to target and destroy cancerous cells.

Abstract:
University of Georgia researchers have developed a new formulation of cisplatin, a common chemotherapy drug, that significantly increases the drug's ability to target and destroy cancerous cells.

UGA researchers use nanoparticles to enhance chemotherapy

Athens, GA | Posted on July 8th, 2014

Cisplatin may be used to treat a variety of cancers, but it is most commonly prescribed for cancer of the bladder, ovaries, cervix, testicles and lung. It is an effective drug, but many cancerous cells develop resistance to the treatment.

Shanta Dhar, assistant professor of chemistry in the UGA Franklin College of Arts and Sciences, and Rakesh Pathak, a postdoctoral researcher in Dhar's lab, constructed a modified version of cisplatin called Platin-M, which is designed to overcome this resistance by attacking mitochondria within cancerous cells. They published their findings recently in the Proceedings of the National Academy of Sciences.

"You can think of mitochondria as a kind of powerhouse for the cell, generating the energy it needs to grow and reproduce," said Dhar, a member of the UGA Cancer Center and principal investigator for the project. "This prodrug delivers cisplatin directly to the mitochondria in cancerous cells. Without that essential powerhouse, the cell cannot survive."

Sean Marrache, a graduate student in Dhar's lab, entrapped Platin-M in a specially designed nanoparticle 1,000 times finer than a human hair that seeks out the mitochondria and releases the drug. Once inside, Platin-M interferes with the mitochondria's DNA, triggering cell death.

Dhar's research team tested Platin-M on neuroblastoma-a cancer commonly diagnosed in children-that typically originates in the adrenal glands. In preliminary experiments using a cisplatin-resistant cell culture, Platin-M nanoparticles were 17 times more active than cisplatin alone.

"This technique could become a treatment for a number of cancers, but it may prove most useful for more aggressive forms of cancer that are resistant to current therapies," said Pathak.

Both Dhar and Pathak caution that their experimental results are preliminary and they must do more work before Platin-M enters any clinical trials. However, their early results in mouse models are promising, and they are currently developing safety trials in larger animals.

"Cisplatin is a well-studied chemotherapy, so we hope our unique formulation will enhance its efficacy," said Dhar, who is also a member of UGA's Nanoscale Science and Engineering Center, Center for Drug Discovery, and Regenerative Bioscience Center. "We are excited about these early results, which look very promising."

This work was supported by an award from the National Institutes of Health, grant number P30GM092378, through the UGA Center of Metalloenzyme Studies and the UGA Office of the Vice President for Research.

####

For more information, please click here

Contacts:
Shanta Dhar

706-542-1012

Copyright © University of Georgia

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

For a full version of the article, see:

Related News Press

News and information

Cryo-electron microscopy achieves unprecedented resolution using new computational methods March 25th, 2017

Argon is not the 'dope' for metallic hydrogen March 24th, 2017

Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed March 24th, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Govt.-Legislation/Regulation/Funding/Policy

Cryo-electron microscopy achieves unprecedented resolution using new computational methods March 25th, 2017

Argon is not the 'dope' for metallic hydrogen March 24th, 2017

Nanobiotix: The Independent Data Monitoring Committee Recommends the Continuation of the Ongoing Phase II/III Trial of NBTXR3 in Soft Tissue Sarcoma March 23rd, 2017

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Nanomedicine

Cryo-electron microscopy achieves unprecedented resolution using new computational methods March 25th, 2017

Nanobiotix: The Independent Data Monitoring Committee Recommends the Continuation of the Ongoing Phase II/III Trial of NBTXR3 in Soft Tissue Sarcoma March 23rd, 2017

Nanoparticle paves the way for new triple negative breast cancer drug March 20th, 2017

Block copolymer micellization as a protection strategy for DNA origami March 17th, 2017

Discoveries

Cryo-electron microscopy achieves unprecedented resolution using new computational methods March 25th, 2017

Argon is not the 'dope' for metallic hydrogen March 24th, 2017

Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed March 24th, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Announcements

Cryo-electron microscopy achieves unprecedented resolution using new computational methods March 25th, 2017

Argon is not the 'dope' for metallic hydrogen March 24th, 2017

Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed March 24th, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Argon is not the 'dope' for metallic hydrogen March 24th, 2017

Promising results obtained with a new electrocatalyst that reduces the need for platinum: Researchers from Aalto University have succeeded in manufacturing electrocatalysts used for storing electric energy with one-hundredth of the amount of platinum that is usually needed March 24th, 2017

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

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