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Archive for the 'Nanomedicine' Category

A four-artificial-neuron network from 112 DNA strands

Posted by Jim Lewis on July 22nd, 2011

A neural network made from 112 DNA strands organized into four artificial neurons was trained with four pieces of information to answer questions.

DNA nanotechnology provides detailed monitoring of single cells

Posted by Jim Lewis on July 19th, 2011

DNA nanotechnology provides cell-surface sensors for real-time monitoring of single cells, including potential use in personalized medicine to test which drugs would be suitable for which individuals.

Nanotechnology therapy for head and neck cancer shows promise

Posted by Jim Lewis on July 15th, 2011

A nanotechnology therapy using targeted dendrimers shows promise against head and neck cancer in experiments in which human tumors are implanted into immunocompromised mice.

First synthetic organ transplant made possible by nanotechnology

Posted by Jim Lewis on July 11th, 2011

The world’s first synthetic organ transplant was a replica windpipe made from a nanocomposite scaffold seeded with the patient’s own adult stem cells.

Nanotechnology protects mice infected with lethal dose of flu virus

Posted by Jim Lewis on June 20th, 2011

Treatment of mice previously infected with a lethal dose of flu virus with a nanotechnology-based drug lowered viral load a thousand fold.

Computational circuit built from 74 small DNA molecules (with video)

Posted by Jim Lewis on June 9th, 2011

A biochemical circuit built from 74 small DNA molecules demonstrates an approach that may enable embedded control of molecular devices.

Nanotechnology provides patch to regenerate heart tissue

Posted by Jim Lewis on May 20th, 2011

Carbon nanofibers and a polymer were combined to create a composite to regenerate natural heart tissue.

Medical nanorobots win poll on engineering's Next Big Thing

Posted by Jim Lewis on May 10th, 2011

A poll of NewScientist readers selected medical nanorobots as the technology that will have the biggest impact on human life in the next 30 years.

Protein, RNA, DNA: Nanotechnology finds a multitude of paths to attack cancer cells

Posted by Jim Lewis on May 2nd, 2011

Protein, RNA, DNA provide very different molecular architectures for nanotechnology to adopt to deliver drugs to cancer cells while sparing healthy cells.

'Good Cholesterol' nanoparticles silence cancer-promoting genes and destroy cancer cells

Posted by Jim Lewis on April 27th, 2011

‘Good Cholesterol’ nanoparticles are non-toxic and use the need of cancer cells for HDL cholesterol to deliver RNA molecules to silence the expression of cancer-promoting genes.

Nanotechnology boosts anticancer drug cocktail many times over

Posted by Jim Lewis on April 22nd, 2011

Porous silica nanoparticles covered with a lipid bilayer deliver large doses of drugs and kill cancer cells a million fold better than do simple liposomes.

Nanotechnology promises low-cost method to squash superbugs

Posted by Jim Lewis on April 14th, 2011

Novel biodegradable nanoparticles destroy membranes of drug-resistant ‘superbugs’ without harming blood cell membranes.

Physicist and television host sees future for nanotechnology and AI

Posted by Jim Lewis on March 24th, 2011

In a review of physicist and television host Michio Kaku’s latest book, Foresight advisor Glenn Reynolds finds reason for optimism, but also cause for concern in the career choices of today’s brightest minds.

Time magazine cover article on the Singularity, Ray Kurzweil, AI and nanotechnology

Posted by Jim Lewis on February 17th, 2011

A cover article in Time magazine portrays the Singularity, Ray Kurzweil, AI, life extension, and nanotechnology as “an idea that rewards sober, careful evaluation.”

Molecular machine switches magnetic state at room temperature

Posted by Jim Lewis on January 29th, 2011

Irradiation with two wavelengths of visible light switches the position of a nitrogen atom close to a nickel ion, and in the process switches the magnetic state of the nickel ion.

Sixteen-year-old nanotechnologist wins Intel Fair and attends State of the Union speech

Posted by Jim Lewis on January 26th, 2011

Sixteen-year-old nanotechnologist Amy Chyao won top prize at the 2010 Intel International Science and Engineering Fair for her work on a nanoparticle to attack cancer cells and joined three other winners in Michelle Obama’s box during the State of the Union speech.

New laser invention to spur nanotechnology applications

Posted by Jim Lewis on January 24th, 2011

A new laser for nanotechnology could lead to more powerful microscopes, faster computers, and more efficient solar energy collectors.

Update and summary of potential applications of medical nanorobotics

Posted by Jim Lewis on January 10th, 2011

Robert A. Freitas Jr. has made available his chapter on nanorobotics from the book The Future of Aging.

Nanotechnology powers rapid drug delivery by nanoparticles

Posted by Jim Lewis on December 30th, 2010

Catalytic nanomotors deliver nanoparticles containing drugs a thousand fold faster than do nanoparticles transported by Browninan motion.

Synergistic benefit of using nanotechnology to simultaneously deliver two anticancer agents

Posted by Jim Lewis on December 28th, 2010

Nanoparticles that deliver two anticancer agents simultaneously kill cancer cells more effectively than nanoparticles delivering the agents separately.