相关实验视频

Updated: Jul 27, 2025

High Throughput Microinjections of Sea Urchin Zygotes

High Throughput Microinjections of Sea Urchin Zygotes

Published on: January 21, 2014

在海洋胚胚胎中酸胆的定位和多种形式

Hironobu Ozaki¹

¹Kitasato University, School of Medicine, Sagamihara-shi, Kanagawa-ken 228, Japan.

Development, growth & differentiation

|June 7, 2023

概括

乙胆酶 (AChE) 的活性在海刺的发育过程中显著增加,特别是在介质细胞中. 这种酶作为胚胎晚期和区域分化的关键标记.

科学领域:

发育生物学是发展生物学.
生物化学生物化学
海洋生物学海洋生物学

背景情况:

乙胆酶 (AChE) 在神经元功能和发育中起着至关重要的作用.
了解ACHE在非神经元组织中的作用,例如海胚胎,可以了解更广泛的生物功能.

研究的目的:

为了研究在海Pseudocentrotus depressus的胚胎发育过程中乙胆酶的时间和空间表达.
描述AChE在发育中的海胚胎中的生化特性和局部化.

主要方法:

使用Ellman等人的色度测量方法进行酶测试.
用Cu-thiocholine方法进行组织化学染色.
生物化学分析包括聚烯胺凝电泳和DEAE-Sephadex离子交换色谱.

主要成果:

AChE活性存在于未受精的卵子中,在分裂期间低,在胃化过程中略微升高,随后迅速增加.
强烈的ACHE活动定位在虫幼虫的介质细胞中,与细胞膜和核外相关.
溶解酶占总活性的60%,有两种不同的形式 (180,000和280,000 MW). 还确定了一种与膜相关的成分,与可溶性形式不同.

结论:

乙胆酶作为一种可靠的标记物,用于海胚胎的晚期和区域差异化.
独特的分子形式和ACHE的局部化表明在胚胎发育中超出神经传递的特定作用.

更多相关视频

The Power of Simplicity: Sea Urchin Embryos as in Vivo Developmental Models for Studying Complex Cell-to-cell Signaling Network Interactions

The Power of Simplicity: Sea Urchin Embryos as in Vivo Developmental Models for Studying Complex Cell-to-cell Signaling Network Interactions

Published on: February 16, 2017

RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs

RNA In situ Hybridization in Whole Mount Embryos and Cell Histology Adapted for Marine Elasmobranchs

Published on: April 12, 2013

相关概念视频

Cholinesterases: Distribution and Function

Cholinesterases: Distribution and Function

Cholinesterases are a group of serine hydrolase enzymes that play a crucial role in the breakdown of choline esters. The two primary types of cholinesterases are acetylcholinesterases (AChEs) and butyrylcholinesterase (BuChEs), which differ in their distribution, function, and substrate specificity. AChEs, also known as true cholinesterases, specifically hydrolyze acetylcholine, while BuChEs, often referred to as pseudocholinesterases, can hydrolyze various choline esters, including...

Cholinergic Neurons: Neurotransmission

Cholinergic Neurons: Neurotransmission

Cholinergic neurotransmission involves the synthesis and the release of acetylcholine (ACh) in order to transmit nerve impulses across the synapse. The process begins with the synthesis of acetyl CoA, a precursor for ACh, from ATP, acetate, and coenzyme A in the mitochondria. Choline, another vital precursor, is transported inside the neuron through choline transporters, including high-affinity choline transporter CHT1, low-affinity choline transporter CTL1, and lower-affinity choline...