Overview
- A peer‑reviewed study published on Wednesday reports that University of South Carolina researchers used an injectable polymer nanogel called Nano‑ERASER to convert astrocytes into functional neurons in organoids and Alzheimer’s mouse models.
- Nano‑ERASER works by carrying antibodies into astrocytes to trigger rapid degradation of the RNA‑binding protein PTBP1, a process adapted from the Trim‑Away technique that avoids altering DNA.
- Treated mice showed rapid behavioral recovery after one or two injections, restored nesting and water‑maze performance, higher neuron density, reduced neuroinflammation, and lower amyloid‑beta levels, with converted cells confirmed as electrically active.
- The authors note that prior studies of PTBP1 suppression produced conflicting replication results, so independent confirmation and longer follow‑up are needed to verify reproducibility, specificity, and long‑term neuron survival.
- The team plans extended safety and efficacy tests and nonhuman primate studies before any human trials, and researchers say the approach could offer a path to replace lost neurons if those steps confirm safety and benefit.