实验动物与比较医学 ›› 2023, Vol. 43 ›› Issue (3): 282-287.DOI: 10.12300/j.issn.1674-5817.2022.166

• 模式动物与动物模型 • 上一篇    下一篇

Micall2a基因表达下调抑制斑马鱼血管发育

杨晋娴1,2(), 王淑娟1, 翟金云1, 朱顺星1,2()()   

  1. 1.南通大学杏林学院, 南通 226001
    2.南通大学实验动物中心, 南通 226001
  • 收稿日期:2022-10-31 修回日期:2023-04-17 出版日期:2023-06-25 发布日期:2023-07-18
  • 通讯作者: 朱顺星(1968—),男,博士,副教授,研究方向:人类疾病与动物模型。E-mail:zsx@ntu.edu.cn。ORCID: 0000-0001-8011-4099
  • 作者简介:杨晋娴(1990—),女,硕士,讲师,研究方向:人类疾病与动物模型。E-mail:yjx0815@ntu.edu.cn
  • 基金资助:
    江苏省高等学校自然科学研究面上项目“LncRNA SLC25A34-AS1调控斑马鱼动静脉分化的机制研究”(20KJB310028);南通市科技计划项目“利用斑马鱼模型研究miR-22a调控血管芽生导向的机制”(JC2020104);南通大学杏林学院大学生创新创业训练计划项目“Micall2a基因调控斑马鱼胚胎血管发育”(201813993021xl)

Downregulation of Micall2a Gene Expression Inhibited Vascular Development in Zebrafish

Jinxian YANG1,2(), Shujuan WANG1, Jinyun ZHAI1, Shunxing ZHU1,2()()   

  1. 1.Xinglin College of Nantong University, Nantong 226001, China
    2.Laboratory Animal Center of Nantong University, Nantong 226001, China
  • Received:2022-10-31 Revised:2023-04-17 Published:2023-06-25 Online:2023-07-18
  • Contact: ZHU Shunxing (ORCID: 0000-0001-8011-4099), E-mail: zsx@ntu.edu.cn

摘要:

目的 探究斑马鱼胚胎早期发育过程中Micall2a基因的表达模式,以及该基因对斑马鱼血管发育的影响。 方法 使用Tgfli:GFP)转基因斑马鱼(用绿色荧光蛋白标记血管)和野生型斑马鱼(AB),采用全胚胎原位杂交技术检测其早期胚胎不同发育阶段的Micall2a基因表达水平。通过显微注射吗啉反义寡核苷酸下调Micall2a基因,并采用实时荧光定量PCR技术检测该基因在斑马鱼胚胎不同发育阶段mRNA表达水平。采用激光共聚焦显微成像技术,观察并分析Micall2a基因下调后斑马鱼的血管表型变化。 结果 受精后24 h(24 hours post-fertilization,24 hpf)、36 hpf和48 hpf的斑马鱼早期胚胎的脑、心脏、血管系统中均有Micall2a基因表达。显微注射吗啉反义寡核苷酸后Micall2a基因的mRNA水平增加,抑制斑马鱼胚胎的血管发育,导致斑马鱼节间血管发育缺陷。 结论 Micall2a基因表达下调可以抑制斑马鱼血管的发育。

关键词: Micall2a基因, 原位杂交, 胚胎发育, 血管发育, 斑马鱼, 血管依赖性疾病

Abstract:

Objective To explore the expression pattern of Micall2a gene during the early development of zebrafish embryos and the effect of this gene on zebrafish vascular development. Methods Whole embryo in situ hybridization was used to detect Micall2a expression levels at different stages of early embryo development of Tg (fli:GFP) transgenic (labeled with green fluorescent protein) and wild type zebrafish (AB). Micall2a gene expression was downregulated by microinjection of a morpholine antisense oligonucleotide, and real-time fluorescent quantitative PCR was used to detect mRNA expression of the gene at different developmental stages of zebrafish embryos. Laser confocal microscopy was used to observe and analyze vascular phenotypic changes in zebrafish after the downregulation of Micall2a. Results Micall2a was expressed in the brain, heart, and vascular system of zebrafish embryos at the 24th, 36th, and 48th hours post fertilization. The mRNA level of Micall2a increased after microinjection of morpholine antisense oligonucleotides, inhibiting vascular development in zebrafish embryos, resulting in internode angiogenesis defects in zebrafish. Conclusion Downregulation of Micall2a expression inhibits the development of blood vessels in zebrafish.

Key words: Micall2a gene, In situ hybridization, Vascular development, Embryonic development, Zebrafish, Vascular dependent diseases

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