GuNA-modified antisense gapmers show prolonged activity in mouse brain
Based on the PubMed abstract, researchers combined guanidine-bridged nucleic acid and MOE modifications in antisense gapmers, reporting improved knockdown in laboratory and animal experiments. Activity persisted beyond 24 weeks in mouse brain after intracerebroventricular administration. The study also examined immune responses and toxicity; these preclinical results do not establish human safety or efficacy.
DOI: 10.1177/21593337261502560