Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Changing Shape Makes Chemotherapy Drugs Better at Targeting Cancer Cells: Researchers at UC Santa Barbara find that making anti-cancer drug particles rod-shaped significantly increases their ability to target and inhibit breast cancer cells

Abstract:
Bioengineering researchers at University of California, Santa Barbara have found that changing the shape of chemotherapy drug nanoparticles from spherical to rod-shaped made them up to 10,000 times more effective at specifically targeting and delivering anti-cancer drugs to breast cancer cells.



Changing Shape Makes Chemotherapy Drugs Better at Targeting Cancer Cells from UCSB Engineering on Vimeo.

Changing Shape Makes Chemotherapy Drugs Better at Targeting Cancer Cells: Researchers at UC Santa Barbara find that making anti-cancer drug particles rod-shaped significantly increases their ability to target and inhibit breast cancer cells

Santa Barbara, CA | Posted on February 27th, 2013

Their findings could have a game-changing impact on the effectiveness of anti-cancer therapies and reducing the side effects of chemotherapy, according to the researchers. Results of their study were published recently in Proceedings of the National Academy of Sciences.

[Illustration: Rod-shaped chemotherapy drug nanoparticles bind more efficiently to receptors on cancer cells. Credit: Peter Allen]

"Conventional anti-cancer drugs accumulate in the liver, lungs and spleen instead of the cancer cell site due to inefficient interactions with the cancer cell membrane," explained Samir Mitragotri , professor of chemical engineering and Director of the Center for BioEngineering at UCSB. "We have found our strategy greatly enhances the specificity of anti-cancer drugs to cancer cells."

To engineer these high-specificity drugs, they formed rod-shaped nanoparticles from a chemotherapeutic drug, camptothecin, and coated them with an antibody called trastuzumab that is selective for certain types of cancer cells, including breast cancer. The antibody-coated camptothecin nanorods were 10,000-fold more effective than tratsuzumab alone and 10-fold more effective than camptothecin alone at inhibiting breast cancer cell growth.

"This unique approach of engineering shapes of anti-cancer drugs and combining them with antibodies represents new direction in chemotherapy," Mitragotri added.

Mitragotri and collaborators at UCSB, including post-doctoral researchers Sutapa Barua and Jin-Wook Yoo, and former graduate student Poornima Kolhar, looked to human breast cancer cells to examine how shape works in synergy with molecular recognition to perform complex tasks within the human body.

"We were inspired to look at the shape as a key parameter by natural objects. In nature, all key particles such as viruses, bacteria, red blood cells, platelets are non-spherical," said Mitragotri. "Their shape plays a key role in their function."

Their research was performed in collaboration with Yatin Gokarn and Aditya Wakankar of Genentech, a member of the Roche group. "The work of Professor Mitragotri and his collaborators exemplifies the groundbreaking contributions bioengineers at UC Santa Barbara are making in medical research, and of how our model of industry partnership delivers results," said Rod Alferness, Dean of the College of Engineering.

The study was completed with support from Genentech, the UC Discovery Program, and the Daryl and Marguerite Errett Discovery Award in Biomedical Research.

####

For more information, please click here

Contacts:
Melissa Van De Werfhorst

Copyright © University of California - Santa Barbara

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

Study results published in PNAS:

Mitragotri Lab Website:

Video: Interview with UCSB bioengineering researchers:

Related News Press

News and information

FEI adds Phase Plate Technology and Titan Halo TEM to its Structural Biology Product Portfolio: New solutions provide the high-quality imaging and contrast necessary to analyze the 3D structure of molecules and molecular complexes July 28th, 2014

Production of Toxic Gas Sensor Based on Nanorods July 28th, 2014

Bruker Announces Acquisition of High-Speed, 3D Super-Resolution Fluorescence Microscopy Company Vutara July 28th, 2014

Stanford team achieves 'holy grail' of battery design: A stable lithium anode - Engineers use carbon nanospheres to protect lithium from the reactive and expansive problems that have restricted its use as an anode July 27th, 2014

Videos/Movies

More than glitter: Scientists explain how gold nanoparticles easily penetrate cells, making them useful for delivering drugs July 21st, 2014

"Nanocamera" takes pictures at distances smaller than light's own wavelength: How is it possible to record optically encoded information for distances smaller than the wavelength of light? July 17th, 2014

CIQUS researchers develop an extremely simple procedure to obtain nanosized graphenes July 15th, 2014

New particle-sorting method breaks speed records: Discovery could lead to new ways of detecting cancer cells or purifying contaminated water July 1st, 2014

Nanomedicine

FEI adds Phase Plate Technology and Titan Halo TEM to its Structural Biology Product Portfolio: New solutions provide the high-quality imaging and contrast necessary to analyze the 3D structure of molecules and molecular complexes July 28th, 2014

New imaging agent provides better picture of the gut July 25th, 2014

Scientists Test Nanoparticle "Alarm Clock" to Awaken Immune Systems Put to Sleep by Cancer July 25th, 2014

Researchers create vaccine for dust-mite allergies Main Page Content: Vaccine reduced lung inflammation to allergens in lab and animal tests July 22nd, 2014

Discoveries

Production of Toxic Gas Sensor Based on Nanorods July 28th, 2014

Stanford team achieves 'holy grail' of battery design: A stable lithium anode - Engineers use carbon nanospheres to protect lithium from the reactive and expansive problems that have restricted its use as an anode July 27th, 2014

Iranian Scientists Produce Reusable Nanoadsorbent to Detect Sulfamide in Chicken July 27th, 2014

Breakthrough laser experiment reveals liquid-like motion of atoms in an ultra-cold cluster: University of Leicester research team unlocks insights into creation of new nano-materials July 25th, 2014

Announcements

FEI adds Phase Plate Technology and Titan Halo TEM to its Structural Biology Product Portfolio: New solutions provide the high-quality imaging and contrast necessary to analyze the 3D structure of molecules and molecular complexes July 28th, 2014

Production of Toxic Gas Sensor Based on Nanorods July 28th, 2014

Bruker Announces Acquisition of High-Speed, 3D Super-Resolution Fluorescence Microscopy Company Vutara July 28th, 2014

Stanford team achieves 'holy grail' of battery design: A stable lithium anode - Engineers use carbon nanospheres to protect lithium from the reactive and expansive problems that have restricted its use as an anode July 27th, 2014

Grants/Awards/Scholarships/Gifts/Contests/Honors/Records

New imaging agent provides better picture of the gut July 25th, 2014

Hysitron is Awarded TWO R&D 100 Awards for Highly Innovative Technology Developments in the Areas of Extreme Environments and Biological Mechanical Property Testing July 23rd, 2014

Researchers create vaccine for dust-mite allergies Main Page Content: Vaccine reduced lung inflammation to allergens in lab and animal tests July 22nd, 2014

EPFL Research on the use of AFM based nanoscale IR spectroscopy for the study of single amyloid molecules wins poster competition at Swiss Physics Society meeting July 22nd, 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