纳米结构
明胶
内化
材料科学
纳米技术
DNA
四面体
纳米颗粒
生物物理学
化学
细胞
生物化学
生物
结晶学
作者
Ke Xu,Y. Y. Du,Bin Xu,Yuqi Huang,Wei Feng,Dehong Yu,Yu Chen,Xueling Wang
出处
期刊:Small
[Wiley]
日期:2024-02-08
标识
DOI:10.1002/smll.202310604
摘要
Abstract Nanoparticle‐based drug delivery strategies have emerged as a crucial avenue for comprehensive sensorineural hearing loss treatment. Nevertheless, developing therapy vectors crossing both biological and cellular barriers has encountered significant challenges deriving from various external factors. Herein, the rational integration of gelatin nanoparticles (GNPs) with tetrahedral DNA nanostructures (TDNs) to engineer a distinct drug‐delivery nanosystem (designed as TDN@GNP) efficiently enhances the biological permeability and cellular internalization, further resolving the dilemma of noise‐induced hearing loss via loading epigallocatechin gallate (EGCG) with anti‐lipid peroxidation property. Rationally engineering of TDN@GNP demonstrates dramatic alterations in the physicochemical key parameters of TDNs that are pivotal in cell‐particle interactions and promote cellular uptake through multiple endocytic pathways. Furthermore, the EGCG‐loaded nanosystem (TDN‐EGCG@GNP) facilitates efficient inner ear drug delivery by superior permeability through the biological barrier (round window membrane), maintaining high drug concentration within the inner ear. The TDN‐EGCG@GNP actively overcomes the cell membrane, exhibiting hearing protection from noise insults via reduced lipid peroxidation in outer hair cells and spiral ganglion neurons. This work exemplifies how integrating diverse vector functionalities can overcome biological and cellular barriers in the inner ear, offering promising applications for inner ear disorders.
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