Health and Healthcare Systems

One day these tiny robots made from algae could be sent into your body to treat disease

A man swims in algae-covered Han River in Wuhan, Hubei province June 11, 2014. Picture taken June 11, 2014. REUTERS/China Daily (CHINA - Tags: ENVIRONMENT DISASTER SOCIETY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA - GM1EA6C1FWP01

Nanotechnology presents better chances of treating diseases in the future. Image: REUTERS/China Daily

Dom Galeon
Writer, Futurism

In brief

Microbots designed to traverse the human body are one of the most potentially transformative technologies in the future of healthcare. Researchers have developed a microbot made from algae that solves some problems with the tech.

Tiny doctors

Google’s chief engineer and notable futurist Ray Kurzweil has said that nanobots or microbots will flow through our bodies by 2030. While the technology could be life-changing, the prospects for these nanobots are still limited by challenges in powering the micro devices and guiding them through the body.

A team of researchers led by Li Zhang, a materials scientist from the Chinese University of Hong Kong in Shatin, may have found a solution to both problems. In a study published in the journal Science Robotics, Zhang and his colleagues turned to a type of miniature alga called Spirulina platensis, commonly used as a dietary supplement.

Image: Futurism

The key is coating the Spirulina with iron oxide nanoparticles. The helical or spring-like shape of the magnetized alga provides maximum mobility when propelled by magnetic fields that harmlessly pass through the body. Best of all, these synthetic microbots are completely biocompatible. They degrade in days or hours, depending on how much magnetic coating they have, without harming cells — except for cancer cells. The magnetized alga destroyed about 90% of tumor cells exposed to it for 48 hours in a lab dish, an unexpected side-effect discovered by the researchers.

Have you read?

Microbots - The future of treatments

Miniature technologies, like these synthetic algae microbots, show potential for delivering medical treatments to every corner of the the human body. The microbots could also provide more efficient treatment; they can be easily controlled and monitored by either observing their fluorescence or through a medical imaging tool called nuclear magnetic resonance (NMR) when the algae travels deeper into the body.

The ability of the algae microbots to carry cargo like drugs inside the body still needs to be tested, however. “It’s still not ready for a doctor to use,” Joseph Wang, a nanoengineer who’s developing a different type of medical microbots, told Science. He thinks the technology might be available in the next ten years, a timetable that nearly aligns with Kurzweil’s prediction.

Nanotechnology presents better chances of treating diseases in the future, although we do have to iron out more details than just mobility and control. Nevertheless, the technology is one of many advances in medical research — together with developments in the use of gene editing tools, stem cells, 3D-printed organs, and improved prostheses — that’s worth keeping an eye out for.

Don't miss any update on this topic

Create a free account and access your personalized content collection with our latest publications and analyses.

Sign up for free

License and Republishing

World Economic Forum articles may be republished in accordance with the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License, and in accordance with our Terms of Use.

The views expressed in this article are those of the author alone and not the World Economic Forum.

Stay up to date:

Global Health

Related topics:
Health and Healthcare SystemsFourth Industrial Revolution
Share:
The Big Picture
Explore and monitor how Global Health is affecting economies, industries and global issues
A hand holding a looking glass by a lake
Crowdsource Innovation
Get involved with our crowdsourced digital platform to deliver impact at scale
World Economic Forum logo
Global Agenda

The Agenda Weekly

A weekly update of the most important issues driving the global agenda

Subscribe today

You can unsubscribe at any time using the link in our emails. For more details, review our privacy policy.

A historic leap in cancer vaccines – here’s what you need to know

Michelle Meineke

November 22, 2024

The key health achievements of COP29, and other top health stories

About us

Engage with us

  • Sign in
  • Partner with us
  • Become a member
  • Sign up for our press releases
  • Subscribe to our newsletters
  • Contact us

Quick links

Language editions

Privacy Policy & Terms of Service

Sitemap

© 2024 World Economic Forum