New Micro-robots Deliver Hydrogen Therapy to Fight Cancer More Effectively
- Authors
- Kun Liu, Juanfeng Ou, Shuanghu Wang, Junbin Gao, Lu Liu, Yicheng Ye, Daniela A. Wilson, Yunrui Hu, Fei Peng, Yingfeng Tu
- Journal
- Applied Materials Today
- Year
- 2020
- DOI
- 10.1016/j.apmt.2020.100694
- Study Type
- Cell Culture
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Breast Cancer
- Body System
- Immune System
TL;DR
Scientists have created tiny, self-powered, biodegradable robots that deliver hydrogen and cancer drugs directly to cancer cells, improving treatment effectiveness.
Key Finding
Magnesium-based micromotors that generate hydrogen gas while moving improved chemotherapy effectiveness against cancer cells by 2.4-fold compared to non-moving controls in cell culture tests.
Summary
Researchers created tiny biodegradable devices made from magnesium that move on their own by reacting with water to produce hydrogen gas. In laboratory tests with cancer cells, these moving micromotors delivered both hydrogen and a chemotherapy drug more effectively than stationary controls, improving cancer cell death by 2.4 times at low drug concentrations. The study suggests that combining the motion of these devices with hydrogen generation could enhance cancer treatment.
Practical Takeaway
This is early laboratory research in cancer cells only, not human studies. While the results are interesting, the technology is still in development and far from clinical use. The study does not provide information about hydrogen water safety or effectiveness for any health condition in humans.
Abstract
Hydrogen therapy has recently emerged as an attractive approach for combating major diseases including cancer, diabetes, stroke and Parkinson's disease. Herein, we ingeniously fabricated a fully biodegradable Magnesium (Mg) based micromotor for the active hydrogen and chemotherapeutics delivery, and firstly proposed the concept of a self-propelled micromotor platform used for cancer active hydrogen-chemotherapy. By consuming water, the micromotor generates sufficient hydrogen in-situ, which is not only propellant for motion, but also active component for hydrogen therapy. The active motion of micromotors with a speed up to 57 ± 19 μm•s−1 leads to enhanced diffusion of produced hydrogen that allows for higher extracellular and intracellular reducibility. Compared with the non-motor control, the micromotor loaded with doxorubicin improves the chemotherapy efficacy significantly by 2.4 times for 4T1 tumor cells with a concentration as low as 100 μg•mL−1. These results indicate that the Mg-based micromotors can act as self-propelled carriers for enhanced intracellular hydrogen and cancer chemotherapy. Taking advantage of the locally hydrogen generation and the active moving capabilities, the facilely engineered Mg micromotor provides great promise for cancer synergistic hydrogen chemotherapy.