New Microscopic Metal Particles Show Promise In Targeted Cancer Therapy

Scientists have created microscopic metal-based particles that can destroy cancer cells while leaving healthy ones unharmed, a breakthrough that could pave the way for safer, more precise cancer treatments.

A team at the Royal Melbourne Institute of Technology (RMIT) in Australia is conducting the research, which is still in its early phase and has so far tested only on cell cultures, Xinhua news agency reported.

Although the findings have not yet been verified in animal or human trials, they highlight an innovative method of attacking cancer by taking advantage of its biological vulnerabilities.

Led by RMIT experts, the international group engineered nanodots, tiny particles made from molybdenum oxide, a compound of the rare metal molybdenum that is commonly used in alloys and electronic components.

How the Nanodots Work?

By modifying the nanodots’ chemical structure, researchers enabled them to emit reactive oxygen molecules, unstable oxygen compounds that can damage cancer cells and trigger their death.

Laboratory tests showed that these nanodots destroyed nearly three times more cervical cancer cells than healthy cells within 24 hours, without requiring external light, a rare feature for treatments that depend on oxidative reactions, according to the study published in Advanced Science.

“Cancer cells already live under higher stress than healthy ones,” explained Zhang Baoyue from RMIT’s School of Engineering, the study’s first author. “Our particles push that stress a little further, enough to trigger self-destruction in cancer cells, while healthy cells cope just fine.”

“The result was particles that generate oxidative stress selectively in cancer cells under lab conditions,” Zhang further added.

Current cancer therapies often harm both healthy and malignant tissues.

In contrast, this approach could lead to milder, more targeted treatments by focusing only on cancer’s unique biochemical weaknesses, the researchers said.

They also noted that the use of molybdenum oxide, a relatively common and non-toxic material, could make the technology both safer and more affordable than therapies based on expensive noble metals such as gold or silver.

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