Release date: 2017-11-27 Recently, a research team led by Professor Zhang Li of the Chinese University of Hong Kong and Professor Kostas Kostarelos of the University of Manchester introduced a biodegradable nano-robot that can be used to diagnose diseases or deliver drugs to the human body in the future. The research team members are from the Chinese University of Hong Kong, the University of Edinburgh and the University of Manchester. The research result "Multifunctional Bio-hybrid Magnet Robot for Imaging Guided Therapy" was published in the journal Science Robotics. This robot is made of biodegradable spirulina. As early as the Aztec period (one of the ancient Mexican civilizations), spirulina was once regarded as one of the important sources of nutrition. Until the 1960s, French researchers rediscovered the substance in the Texcoco Lake in Mexico and packaged it on the shelf of the health care store. Figure | Diagram of how the robot works The team's papers use the biodegradability of robots as a new concept. Not only that, the ferromagnetic coating on the robot allows researchers to fine-tune the rate of degradation. Using magnetic fields, researchers can precisely remotely control robots in complex organisms. They also said that robots can carry and release effective drugs that attack cancer cells. However, we need further research in the aspects of motion tracking, biocompatibility, biodegradability and diagnostic treatment. Professor Zhang said, “We have not used complex laboratory techniques and processes to manufacture functional micro-robots from scratch, but directly use natural smart materials, which have medical application value due to their inherent chemical structure. For example, Because these robots have natural internal fluorescence and external (iron oxide) magnetic properties, we can easily track and drive them in vivo using fluorescence imaging and magnetic resonance imaging techniques." “Our micro-robots have the ability to perceive environmental changes associated with disease outbreaks, which makes them promising detectors for remote diagnosis of diseases. We are further developing this technology so that we can fine-tune this image-guided therapy, and it is also a Conceptual verification of the development of multifunctional micro-robots and nano-robot devices." Professor Zhang concluded. Professor Kostarelos said, “Creating a guided robotic system that can travel in the body has always been crucial in the field of conveyor systems engineering. Our research takes advantage of some of the characteristics of nature, such as fluorescence, degradability and shape. But for making With a proof-of-concept prototype of a micro-robot, we have added engineering features such as magnetization and biological activity." “We are still in the early stages of development because any such robot (system) needs 100% safe degradation, or is removed from the body or actively excreted after completing work. But it is worth noting that our work is the first ever. An example of what can be achieved by biodegradation (clearing mechanisms) that have the potential to be controlled in difficult-to-reach areas of the body, making them potentially useful for minimally invasive diagnosis and treatment,†he added. Source: DeepTech Deep Technology Feed additives are small amounts of substances added to ordinary feed to improve animal nutrition, enhance physical fitness, and reduce
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