三种斑马鱼转胺酶2的生物化学和功能特征 2
Manuel Lisetto1, Mariagiulia Fattorini1, Andrea Lanza1
1Department of Life Sciences, University of Trieste, 34127 Trieste, Italy.
International journal of molecular sciences
|August 12, 2023
概括
斑马鱼转胺酶2 (TG2) 蛋白质的功能与人类的TG2类似,可催化依赖的反应,并影响细胞粘附和细胞亡. 这项研究验证了斑马鱼作为研究TG2 in vivo的模型.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 转胺酶2 (TG2) 是一种蛋白质,在生理和病理过程中具有多种作用.
- 由于环境依赖的效应 (局部化,细胞类型,实验条件),TG2的功能经常受到争议.
- 斑马鱼 (Danio rerio) 是一种有价值的动物模型,用于体内生物研究.
研究的目的:
- 描述斑马鱼TG2 (zTGs2) 蛋白质的酶和功能性质.
- 建立斑马鱼作为体内TG2研究的可靠模型.
- 为了比较zTGs2的功能与人类的TG2 (hTG2).
主要方法:
- 在斑马鱼基因组中确认了三个人类TG2正基因组 (zTGs2).
- 表达和净化的重组zTGs2蛋白质.
- 测试的Ca2+依赖的转胺活性和特定抑制剂的抑制.
- 评估了zTGs2在人类纤维细胞中RGD独立细胞粘附中的作用.
- 研究了细胞内zTGs2在HEK293细胞中亡中的作用.
主要成果:
- 斑马鱼在胚胎发育过程中拥有三个TG2正基因 (zTGs2),其表达和功能已得到证实.
- 重组zTGs2表现出Ca2+依赖的转基因活性,可通过特定的TG2抑制剂抑制,反映hTG2.
- 在人类纤维细胞模型中,zTGs2介导的RGD独立的细胞粘附.
- 细胞内zTGs2在细胞亡中表现出与hTG2在转染的HEK293细胞中具有相似的保护/破坏作用.
结论:
- 斑马鱼TG2蛋白 (zTGs2) 的生物化学和功能性质与它们的人类正统特征非常相似.
- 这些发现支持斑马鱼作为研究TG2功能的体内模型的实用性.
- 这项研究为未来使用斑马鱼对TG2角色的体内研究提供了基础.
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