Better cancer detection can save many lives.
Google has recently described their ambitious plans. The plan is to detect signs of cancer and heart disease by circulating magnetic nanoparticles in the bloodstream. But some nanotechnology experts question whether Google’s plan is too sci-fi for the current medical reality.
Is Google’s Nanoparticle Health Testing Program just a fantasy?
“The exciting thing is that a company is heavily funded by Google to address this huge challenge,†said ChadMirkin, director of the International Nanotechnology Association at Northwestern University. But he said that Google describes an "intention, not a new discovery or a new method." At this point, he believes the technology is tentative: basically a wonderful "Star Trek."
Google’s ideas are nothing new – researchers have been studying the diagnosis and treatment of magnetic nanoparticles for many years. In this announcement, Andrew Conrad, leader of the life sciences team at Google XLab, said, "In essence, the idea is very simple."
This idea may be simple, but it is not easy to operate. The use of nanoparticles in the body is very difficult, so Google's vision is difficult to achieve in a short time.
The main problem facing this search engine giant will be biological issues. Google intends to produce a nanoparticle pellet that can be swallowed. In this way, the nanoparticles will enter the blood in some way, and Mijin calls it a “great leap in belief.†Once inside the blood, these nanoparticles begin to look for targets, such as cancer cells, and then collect the particles. For measurement. For example, placing a magnet near the subcutaneous blood vessels of your wrist can concentrate these nanoparticles in one place. Google did not disclose how to measure signals from these nanoparticles.
Every step here is a huge challenge. One of the problems is that the body's natural defense system is to remove foreign matter, so Google needs to find a way to get around it.
Robert Langer, a professor at the Massachusetts Institute of Technology, said that in addition to the challenges of transporting nanoparticles and reading signals from nanoparticles, another key question is whether this approach is safe. In fact, John McDonald of the Georgia Institute of Technology said: "One of the obstacles to magnetic nanoparticles is its toxicity. Although everything is possible, I think there may be more effective than the method proposed by Google. Other ways to detect cancer and other diseases at an early stage."
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