Oregon State Nanoparticles Lift Glioblastoma Mouse Survival 50% by Restoring PTEN
Updated
Updated · ScienceDaily · Jul 17
Oregon State Nanoparticles Lift Glioblastoma Mouse Survival 50% by Restoring PTEN
3 articles · Updated · ScienceDaily · Jul 17
Summary
Median survival in glioblastoma mice rose 50% after Oregon State researchers delivered PTEN mRNA with mannose-coated lipid nanoparticles that crossed the blood-brain barrier.
GLUT1 transporters let the sugar-coated particles enter the brain and, because glioblastoma cells express about 3 times more GLUT1 than normal tissue, helped concentrate the therapy inside tumors.
A cholesterol-linked mannose design increased surface sugar coverage 6-fold, while a positively charged cholesterol derivative protected the mRNA cargo until it reached cancer cells.
Repeated dosing shrank tumors without measurable organ toxicity, offering a potential route against a cancer that affects 3.19 per 100,000 Americans and kills more than 95% of patients within 5 years.
If a sugar key can unlock the brain for cancer therapy, what other diseases like Alzheimer's could it target next?
To beat brain cancer, is it better to trick the blood-brain barrier with sugar or temporarily break it with ultrasound?
Can a cancer that thrives on sugar learn to outsmart a therapy that's disguised as its own food source?
Sugar-Coated Nanoparticles Deliver mRNA to Shrink Glioblastoma Tumors by 50% in Preclinical Study
Overview
Oregon State University has made a major advance in treating glioblastoma, a deadly brain cancer, by developing specialized nanoparticles with a sugar (mannose) coating. These nanoparticles are designed to efficiently deliver messenger RNA (mRNA) directly to tumor cells, overcoming the usual barriers to brain drug delivery. Once inside, the mRNA instructs the cancer cells to produce PTEN, a protein that is often missing and whose absence leads to uncontrolled tumor growth. This innovative approach offers new hope for patients, marking a crucial step forward in brain cancer research and therapy.