Shuyao Ruan, Jiaqi Li, Hang Ruan, Qing Xia, Xiaolin Hou, Zhi Wang, Teng Guo, Chunyun Zhu, Nianping Feng, Yongtai Zhang
Conventional transnasal brain-targeted drug delivery strategies are limited by nasal cilia clearance and the nasal mucosal barrier. To address this challenge, we designed dissolving microneedles combined with nanocarriers for enhanced nose-to-brain drug delivery. To facilitate transnasal administration, a toothbrush-like microneedle patch was fabricated with hyaluronic acid-formed microneedles and tannic acid-crosslinked gelatin as the base, which completely dissolved in the nasal mucosa within seconds leaving only the base, thereby releasing the loaded cyclodextrin-based metal-organic frameworks (CD-MOFs) without affecting the nasal cilia and nasal microbial communities...
January 12, 2024: Journal of Controlled Release