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鱼类中SREB G蛋白结合受体家族的特征:在上游转录因子结合部位的脑基因表达和基因组差异

Timothy S Breton¹, Samantha Fike¹, Mullein Francis¹

¹Division of Natural Sciences, University of Maine at Farmington, Farmington, ME 04938, USA.

Comparative biochemistry and physiology. Part A, Molecular & integrative physiology

|August 23, 2023

概括

这项研究探讨了鱼脑中的超保存受体表达在大脑 (SREB) 基因表达,揭示了特定物种的模式和保存的调节元素. 这些发现为SREB受体的演变和功能提供了洞察力.

科学领域:

神经科学是一个神经科学.
基因组学就是基因组学.
比较生物学的比较生物学

背景情况:

在大脑中表达的超保存受体 (SREB) 家族,包括SREB1,SREB2和SREB3,是孤儿G蛋白合受体,对神经元可塑性和生殖控制至关重要.
关于SREBs在不同脊椎动物物种的进化保护和比较基因表达模式的知识有限,特别是像鱼类这样的非哺乳动物脊椎动物.
鱼类的SREB系统表现出复杂性,在各种物种中观察到基因重复 (SREB3B) 或基因损失.

研究的目的:

通过使用定量PCR (qPCR) 来研究三种鱼类大脑中的SREB基因表达模式,这些鱼类具有不同的SREB系统组成.
通过分析70种光鱼物种基因组中保存的转录因子结合部位来确定SREB受体的转录调节中的潜在差异.

主要方法:

量化PCR (qPCR) 用于分析三种选定的鱼类物种大脑中的SREB和相关基因表达.
对70种光鱼基因组上游基因组区域进行了生物信息分析,以确定SREB受体的保存转录因子结合部位.

主要成果:

在所有研究的鱼类物种中,SREB受体主要表达在前脑区域.
观察到特定物种的表达模式,包括斑马鱼下丘脑中丰富的受体表达,以及气泡鱼中sreb3a和sreb3b之间的分歧.
在这三种物种中,dkk3a基因与SREB受体具有空间相关性.
在sreb2和sreb3b的上游确定了高度保守的转录因子结合位,但对于sreb1或sreb3a没有显著的影响.

结论:

这项研究为鱼类中SREB受体的差异表达和转录调节提供了新的见解.
这些发现突出了SREB系统中的特定物种的适应性,并确定了管理这些受体的潜在监管机制.
这项研究为未来的研究奠定了基础,旨在阐明SREB受体在脊椎动物神经生物学中的功能作用.

关键词:

(GPR27) 的第27届大会.脑子脑子脑子脑子 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 DKK3 菲尼克斯人 (Phoenixin) 是一种在SREB1中,它被认为是SREB1.在SREB2 (GPR85) 中使用.在SREB3 (GPR173) 中.

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