相关实验视频
Updated: Aug 16, 2026
05:05
Dissection of Human Vitreous Body Elements for Proteomic Analysis
Published on: January 23, 2011
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使用SWATH-MS和基于向的蛋白质组 (MRMHR) 在胚胎化期间在的玻璃体中识别潜在的与生长相关的蛋白质
Jimmy Ka-Wai Cheung1,2, King-Kit Li1, Lei Zhou1,2
1Centre for Myopia Research, School of Optometry, The Hong Kong Polytechnic University, Hong Kong.
International journal of molecular sciences
|October 16, 2024
概括
这项研究确定了在小眼睛生长过程中发生变化的关键玻璃体幽默蛋白,为近视发展提供了洞察力. 这些发现揭示了早期近视和眼睛延长的潜在生物标志物.
科学领域:
- 眼科和视觉科学 眼科和视觉科学
- 蛋白质组学和质谱学
- 发展生物学 发展生物学
背景情况:
- 玻璃体 (VH) 在眼睛的延长过程中经历了显著的变化,这是近视发展的关键因素.
- 在正常眼睛生长过程中了解VH中的蛋白质动态对于阐明近视进展机制至关重要.
研究的目的:
- 在正常生长 (4-28天) 期间识别和量化小玻璃体中的相对蛋白质变化.
- 为子建立一个全面的玻璃体蛋白质组光谱图书馆.
- 识别与眼睛生长和凝视化相关的潜在蛋白质生物标志物.
主要方法:
- 使用数据独立获取 (SWATH-MS) 和目标LC-ESI-MS/MS的定量蛋白质组学.
- 在正常条件下养育的小模型,定期对眼睛进行测量.
- 用信息依赖获取 (IDA) 和并行反应监测高分辨率 (MRMHR) 来验证蛋白质的识别和量化.
主要成果:
- 产生了1576个非冗余蛋白质的玻璃蛋白离子库.
- 在不同的时间点确定了12个上调和26个下调的蛋白质.
- 参与生长途径的诸如α-fetoprotein,cadherin家族,neurocan和reelin等蛋白质得到了验证.
结论:
- 这项研究展示了正常生长期间小玻璃体幽默的第一个全面的光谱库.
- 已识别的差异表达蛋白 (DEP) 作为早期近视的潜在生物标志物候选者.
- 这一发现为人们提供了新的洞察力,了解出口化和眼睛延长的分子机制.
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The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.
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This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...