New Hydrogel Delivers Hydrogen Therapy to Fight Colorectal Cancer
Injectable anaerobic hydrogel loading Clostridium butyricum for local hydrogen therapy against colorectal cancer
Research hubs: Digestive System · Immune System
- Evidence type
- Animal study (cell culture)
- Authors
- Wenna Zheng, Weidong Wu, Yingying Cao, Xinqian Gao, Tianqi Du, Ye Fan, Kehao Dai, Haijun Shen
- Journal
- Biomaterials Advances
- Year
- 2026
- DOI
- 10.1016/j.bioadv.2026.214955
- Study Type
- Cell Culture
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Colorectal Cancer
- Body System
- Digestive System
This research was done in animals. Results in animals often don't carry over to people.
TL;DR
An oxygen-depleting hydrogel protected Clostridium butyricum under aerobic tumor conditions, allowing the bacteria to continuously generate hydrogen and antitumor metabolites that disrupted cancer cell redox balance, impaired mitochondrial respiration, and suppressed tumor growth.
Key Finding
An injectable gel containing hydrogen-producing bacteria successfully delivered sustained hydrogen therapy to colorectal tumors in animal studies, suppressing tumor growth by disrupting cancer cell energy production.
Summary
Researchers developed a special gel containing bacteria that produce hydrogen gas, designed to be injected directly into colorectal tumors. The gel creates an oxygen-free environment that keeps the bacteria alive even in oxygen-rich areas of tumors. In laboratory and animal studies, the hydrogen gas and bacterial byproducts together disrupted cancer cells' energy production and triggered cell death, slowing tumor growth.
Practical Takeaway
This is early-stage research conducted in laboratory and animal models only—not human studies. While it suggests hydrogen gas may have anti-cancer potential when delivered directly to tumors, it does not demonstrate safety or effectiveness in people. Much more research would be needed before this approach could be considered for human use.
Abstract (excerpt)
Hydrogen (H2), a non-toxic therapeutic gas, exerts antitumor effects by disrupting intracellular redox homeostasis and inducing mitochondrial dysfunction. The high diffusibility of H2, as well as its storage difficulties, hinders its sustained release at tumor sites. Thus, the therapeutic effect…