后半规管途径导入不同血清型腺相关病毒转染小鼠耳蜗内毛细胞的效果比较

doi:10.3969/j.issn.1006-7795.2022.04.003

首都医科大学学报 ›› 2022, Vol. 43 ›› Issue (4): 527-534.doi: 10.3969/j.issn.1006-7795.2022.04.003

后半规管途径导入不同血清型腺相关病毒转染小鼠耳蜗内毛细胞的效果比较

刘珊^1,2, 郭瑞^1,2, 宋新雨^1,2, 于倩茹^1,2, 陈钟壡^1,2, 梁文琦^1,2, 滕琪^1,2, 龚树生^1,2, 柳柯^1,2*

1.首都医科大学附属北京友谊医院耳鼻咽喉头颈外科,北京 100050;
2.首都医科大学耳聋疾病临床诊疗与研究中心,北京 100050

收稿日期:2022-04-29 出版日期:2022-08-21 发布日期:2022-10-28
基金资助:
国家重点研发计划项目(2020YFC2005201),国家自然科学基金项目(82071037,81830030,81770997),北京市科委-教委联合基金项目(KZ201810025040)。

Comparison of transfection effects of different serotypes of adeno-associated virus into inner hair cells of mouse cochlea by canalostomy

Liu Shan^1,2, Guo Rui^1,2, Song Xinyu^1,2, Yu Qianru^1,2, Chen Zhongrui^1,2, Liang Wenqi^1,2, Teng Qi^1,2, Gong Shusheng^1,2, Liu Ke^1,2*

1. Department of Otorhinolaryngology-Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China;
2. Clinical Center for Hearing Loss, Capital Medical University, Beijing 100050, China

Received:2022-04-29 Online:2022-08-21 Published:2022-10-28
Contact: *E-mail:liuke@ccmu.edu.cn
Supported by:
This study was supported by National Key Research and Development Program of China(2020YFC2005201),National Natural Science Foundation of China (82071037,81830030,81770997),Beijing Science and Technology Commission-Education Commission Joint Fund Project (KZ201810025040).

摘要/Abstract

摘要： 目的探讨不同血清型的腺相关病毒经后半规管途径导入成年小鼠转染内耳细胞的效率及安全性。方法将20只6~8周C57BL/6J小鼠采用数字表法随机分为5组:腺相关病毒(adeno-associated virus,AAV)4组,AAV8病毒注射组、AAV9病毒注射组、AAVie病毒注射组和Anc80L65病毒注射组,均采取后半规管路径进行注射,每只注射病毒溶液2 μL;正常对照组,每只注射0.9%(质量分数)氯化钠注射液2 μL,均以左耳为手术耳。各组于术前1 d及术后2周行听觉脑干反应(auditory brainstem response,ABR)检查,随后取材进行免疫荧光染色观察病毒在基底膜的分布情况。结果 AAV8组:术后2周观察见耳蜗顶中转34.6%±1.8%内毛细胞被转染,中底转39.0%±5.9%内毛细胞表达绿色荧光蛋白(green fluorescent protein,GFP);AAV9组:术后2周见耳蜗顶中转92.5%±1.1%内毛细胞被转染,中底转94.6%±1.0%内毛细胞表达GFP; AAVie组:术后2周见耳蜗顶中转96.7%±1.5%内毛细胞被转染,中底转97.7%±0.8%内毛细胞表达GFP; Anc80L65组:术后2周见耳蜗顶中转62.5%±3.3%内毛细胞转染,中底转63.1%±6.1%内毛细胞表达GFP;正常对照组未见GFP表达。结论经半规管途径注射AAVie、AAV9病毒溶液可以高效转染到耳蜗内毛细胞,此结果对耳聋疾病的内耳基因治疗具有一定的参考意义。

关键词: 腺相关病毒, 病毒转染, 耳蜗, 内毛细胞, 后半规管

Abstract: Objective To investigate the efficiency and safety of adeno-associated virus (AAV) of different serotypes transfected into inner ear cells of adult mice through posterior semicircular canal pathway. Methods Twenty C57BL/6J mice aged 6-8 weeks were randomly divided into five groups: AAV8 virus injection group, AAV9 virus injection group, AAVie virus injection group and Anc80L65 virus injection group. They were injected through the latter half regulatory path, and each mouse was injected with 2 μL of virus solution.In the normal control group, each mouse was injected with 2 μL normal saline, and the left ear was used as the operating ear. Auditory brainstem response (ABR) was examined one day before operation and two weeks after operation in each group, and then samples were taken for immunofluorescence staining to observe the distribution of virus in corti. Results AAV8 group: at 2 weeks after operation, 34.6%±1.8% inner hair cells were transfected at the apical and middle turn of cochlea, and 39%±5.9% inner hair cells at the middle and basal turn of cochlea expressed green fluorescent protein (GFP). AAV9 group: 92.5%±1.1% inner hair cells were transfected at the apical and middle turn of cochlea and 94.6%±1.0% inner hair cells expressed GFP at the middle and basal turn of cochlea 2 weeks after operation.AAVie group: 96.7%±1.5% inner hair cells were transfected at the apical and middle turn of the cochlea and 97.7%±0.8% inner hair cells at the middle and basal turn of the cochlea expressed GFP at 2 weeks after operation.Anc80L65 group: at 2 weeks after operation,62.5%±3.3% inner hair cells were transfected at the apical and middle turn of the cochlea, and 63.1%±6.1% inner hair cells at the middle and basal turn of the cochlea expressed GFP.No GFP expression was found in the normal control group. Conclusion Injecting AAVie and AAV9 virus solution through semicircular canal can efficiently transfect into cochlear inner hair cells. This result has certain reference significance for inner ear gene therapy of deafness.

Key words: adeno associated virus, virus transfection, cochlea, inner hair cells, posterior semicircular canal

中图分类号:

R764

刘珊, 郭瑞, 宋新雨, 于倩茹, 陈钟壡, 梁文琦, 滕琪, 龚树生, 柳柯. 后半规管途径导入不同血清型腺相关病毒转染小鼠耳蜗内毛细胞的效果比较[J]. 首都医科大学学报, 2022, 43(4): 527-534.

Liu Shan, Guo Rui, Song Xinyu, Yu Qianru, Chen Zhongrui, Liang Wenqi, Teng Qi, Gong Shusheng, Liu Ke. Comparison of transfection effects of different serotypes of adeno-associated virus into inner hair cells of mouse cochlea by canalostomy[J]. Journal of Capital Medical University, 2022, 43(4): 527-534.

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后半规管途径导入不同血清型腺相关病毒转染小鼠耳蜗内毛细胞的效果比较

Comparison of transfection effects of different serotypes of adeno-associated virus into inner hair cells of mouse cochlea by canalostomy

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