蛋白质基因和转录基因分析揭示了从山羊胆乳过渡到成熟牛奶的关键分子事件
Xiao Zhang1, Jianing Shen1, Shuying Bai1
1College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
Journal of agricultural and food chemistry
|October 2, 2024
概括
羊奶的蛋白质成分从胆乳到成熟的牛奶发生显著变化,影响乳腺基因表达和新陈代谢. 本研究确定了蛋白质的关键差异及其调节机制.
科学领域:
- 动物科学动物科学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 羊奶是全球重要的营养来源,但其详细的成分,营养价值和调节机制仍然不完全理解.
- 了解乳腺发育和蛋白质成分对于阐明山羊奶的生理和营养意义至关重要.
研究的目的:
- 为了识别和量化胆乳和成熟山羊奶中的蛋白质.
- 为了研究结母乳和成熟牛奶之间的蛋白质丰度差异.
- 探索牛奶蛋白质变化和乳腺基因表达在从胆乳过渡到成熟牛奶期间之间的关联.
主要方法:
- 对4353种胆乳和成熟的山羊奶蛋白进行蛋白质组分析.
- 差异丰度分析以确定重要的蛋白质变异.
- 网络分析以将牛奶蛋白质变化与哺乳动物基因表达相关联.
主要成果:
- 在山羊奶中鉴定了4353种蛋白质,其中118种蛋白质显示出胆乳和成熟牛奶之间的丰度差异很大.
- 牛奶蛋白质的改变与哺乳动物基因表达变化的网络有关.
- 关键的调节因素包括乳腺生长/发育的增加,蛋白质翻译的减少,蛋白质折叠的减少以及脂质/碳水化合物代谢的减弱.
结论:
- 这项研究为山羊在乳母乳到成熟牛奶过渡期间的乳腺新陈代谢转变提供了新的见解.
- 这些发现有助于理解乳酪中的活性牛奶蛋白与成熟牛奶中的不同作用和调节机制.
- 结果为识别和研究山羊胆乳中的生物活性牛奶蛋白提供了基础.
相关概念视频
01:33Proteomics
7.2K
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
7.2K
02:24Ribosome Profiling
3.5K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.5K