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Engineered extracellular vesicles efficiently deliver CRISPR-Cas9 ribonucleoprotein(RNP)to inhibit herpes simplex virus1 infection in vitro and in vivo

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1362-1379页

作者： Yuanda Wan Liren Li Ruilin Chen Jiajia Han Qiyun Lei Zhipeng Chen Xiaodong Tang Wenyu Wu Shuwen Liu Xingang Yao NMPA Key Laboratory for Research and Evaluation of Drug Metabolism Guangdong Provincial Key Laboratory of New Drug ScreeningSchool of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou 510515China Center of Clinical Pharmacy Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510060China Key Laboratory of Infectious Diseases Research in South China(Southern Medical University) Ministry of EducationGuangzhou 510515China

Extracellular vesicles(EVs)have recently emerged as a promising delivery platform for CRISPR/Cas9 ribonucleoproteins(RNPs),owing to their ability to minimize off-target effects and immune ***,enhancements are required to boost the efficiency and safety of Cas9 RNP enrichment within *** response,we employed the Fc/Spa interaction system,in which the human Fc domain was fused to the intracellular domain of PTGFRN-Δ687 and anchored to the EV ***,the B domain of the Spa protein was fused to the C domain of cargos such as Cre or *** to the robust interaction between Fc and Spa,this method enriched nearly twice the amount of cargo within the *** loaded with spCas9 RNP targeting the HSV1 genome exhibited significant inhibition of viral replication in vitro and in ***,following neuron-targeting peptide RVG modification,the in vivo dosage in neural tissues substantially increased,contributing to the clearance of the HSV1 virus in neural tissues and exhibiting a lower off-target *** findings establish a robust platform for efficient EV-based SpCas9 delivery,offering potential therapeutic advantages for HSV1 infections and other neurological disorders.

关键词： Extracellular vesicles CRISPR/Cas9 Ribonucleoproteins PTGFRN Fc/Spa HSV1 neuron-targeting Delivery

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