基础医学与临床 ›› 2020, Vol. 40 ›› Issue (6): 753-758.

• 研究论文 • 上一篇    下一篇

小鼠生精细胞特异表达载体AAV-Dazl-RFP-Flag的构建及表达验证

李雅惠1, 李凯2, 罗艳云2, 李梦真2, 邙新雨2, 宋伟2, 杨涛1*   

  1. 1.山西医科大学 生物化学与分子生物学教研室, 山西 太原 030001;
    2.中国医学科学院基础医学研究所 北京协和医学院基础学院 医学分子生物学国家重点实验室, 北京 100005
  • 收稿日期:2020-03-08 修回日期:2020-04-20 出版日期:2020-06-05 发布日期:2020-05-29
  • 通讯作者: *yangtao056cn@126.com
  • 基金资助:
    国家自然科学基金(31970794);国家重点实验室专项基金(2060204);山西省重点研发计划(201803D31072);山西省重点研发计划重点项目(201703D111029)

Construction and expression verification of mouse spermatogenic cell-specific expression vector AAV-Dazl-RFP-Flag

LI Ya-hui1, LI Kai2, LUO Yan-yun2, LI Meng-zhen2, MANG Xin-yu2, SONG Wei2, YANG Tao1*   

  1. 1. Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001;
    2. National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences CAMS, School of Basic Medicine PUMC, Beijing 100005, China
  • Received:2020-03-08 Revised:2020-04-20 Online:2020-06-05 Published:2020-05-29
  • Contact: *yangtao056cn@126.com

摘要: 目的 构建含有生精细胞特异启动子Dazl的真核报告基因表达载体 AAV-Dazl-RFP-Flag,研究生精细胞特异启动子Dazl在生精细胞中的启动效果。方法 通过同源重组的方法对腺相关病毒载体 AAV-CMV-RFP-Flag 进行改造,构建小鼠生精细胞特异表达载体AAV-Dazl-RFP-Flag。在体外,转染GC1-spg野生型细胞和 HEK-293T 细胞,通过免疫荧光、q-PCR、Western blot验证AAV-Dazl-RFP-Flag在体外的表达特异性。在体内,将AAV-Dazl-RFP-Flag进行腺相关病毒(AAV)包装,通过显微注射技术将AAV注射到小鼠睾丸内,通过q-PCR检测AAV-Dazl-RFP-Flag在体内的表达特异性。结果 成功构建了AAV-Dazl-RFP-Flag表达载体,并在体内、外水平验证了AAV-Dazl-RFP-Flag的表达。结论 小鼠生精细胞特异表达载体AAV-Dazl-RFP-Flag可以在生精细胞中特异性表达,为雄性生殖不育的基因治疗提供更高效的载体工具。

关键词: Dazl, 启动子, 基因治疗, 精子发生

Abstract: Objective To study the effect of spermatogenic cell-specific promoter Dazl in Spermatogenic cells. Constructing the eukaryotic reporter gene expression vector AAV-Dazl-RFP-Flag containing spermatogenic cell-specific promoter Dazl. Methods The Adeno-associated virus vector AAV-CMV-RFP-Flag was modified by homologous recombination to construct mouse permatogenic cell-specific expression vector AAV-Dazl-RFP-Flag. In vitro, GC1-spg wild-type cells and HEK-293T cells were transfected, and the expression specificity of AAV-Dazl-RFP-Flag in vitro was verified by immunofluorescence, q-PCR, and Western blot. In vivo, AAV-Dazl-RFP-Flag was packaged with adeno-associated virus (AAV), and AAV was injected into the testes of mouse through microinjection technology, then the expression specificity of AAV-Dazl-RFP-Flag in vivo was detected by q-PCR. Results Mouse Sper- matogenic cell-specific expression vector AAV-Dazl-RFP-Flag is specifically expressed in spermatogenic, cells thus provid providing a more efficient tool for gene therapy of male reproductive infertility.

Key words: Dazl, promoter, gene therapy, spermatogenesis

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