Researchers have developed a nanofiber implant that delivers three drugs, doubling the survival rate in mice with glioblastoma. This treatment combines three federally approved drugs: temozolomide, acriflavine, and PT2385. The drugs are embedded in a mesh made from electrospun nanofibers. This system provides both immediate and long-lasting doses to target cancer cells.
The University of Cincinnati and Johns Hopkins Medicine researchers found that the three-drug combination showed strong synergistic effects. This means the drugs were more effective together than when administered individually. The combination significantly improved survival in animal studies. Andrew Steckl, a distinguished research professor at the University of Cincinnati, noted the power of this combination.
Glioblastoma is an aggressive form of brain cancer. It is difficult to treat due to its heterogeneous cells, which can mutate and evade treatment. The blood-brain barrier also limits the effectiveness of traditional chemotherapies. The nanofiber mesh system aims to address these challenges by delivering multiple synergistic drugs directly to the tumor site after surgery.
In animal trials, untreated mice with glioblastoma died within 19 days. A majority of mice treated with the three-layer nanofiber mesh survived twice as long. Forty percent of these treated mice survived past the 120-day conclusion of the experiment. This survival plateau lasted for over 80 days.
Daewoo Han, an assistant professor at the University of Cincinnati and lead author, stated that the electrospun fiber mesh allows for precise control over dosage, release, and implant geometry. This contributes to its effectiveness. The blood-brain barrier protects the body from the toxic side effects of the medicine applied directly to the brain. Researchers are now working to optimize the long-term release of medicines using advanced nanofiber structures. The delivery system may also have applications for other difficult-to-treat diseases.
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