相关实验视频

Updated: Jun 14, 2025

Indirect Immunofluorescence on Frozen Sections of Mouse Mammary Gland

Indirect Immunofluorescence on Frozen Sections of Mouse Mammary Gland

Published on: December 1, 2015

[来自女性的乳腺上皮细胞合成omega-3和6脂肪酸]

Imelda Cecilia Zarzoza-Mendoza¹, Elizabeth Sosa-Castillo¹, Mariela Bernabe-García¹

¹Instituto Mexicano del Seguro Social, Centro Médico Nacional Siglo XXI, Hospital de Pediatría "Dr. Silvestre Frenk Freund", Unidad de Investigación Médica en Nutrición. Ciudad de México, México.

Revista medica del Instituto Mexicano del Seguro Social

|June 9, 2025

概括

人类乳腺组织细胞合成长链多不和脂肪酸 (LC-PUFA),对婴儿发育至关重要. 在成熟的牛奶中酶表达增加,支持新生儿的营养需求.

科学领域:

生物化学生物化学
人体生理学人体生理学
营养科学营养科学

背景情况:

人类牛奶 (HM) 长链多不和脂肪酸 (LC-PUFA) 合成的代谢调节,由于乳腺组织的获取有限,人们对其了解甚微.
研究人类乳腺组织中的酶表达对于理解LC-PUFA生产至关重要.

研究的目的:

为了确定人类乳腺上皮细胞 (ECHBT) 是否表达LC-PUFA合成酶.
分析不同HM类型中酶表达的变化,并与LC-PUFA百分比相关联.

主要方法:

分析了6名女性使用气相色谱的乳母,过渡期和成熟HM的脂肪酸成分.
在ECHBT中通过qPCR对delta-5脱酶 (δ5D),delta-6脱酶 (δ6D) 和延长酶Elovl-5的量化mRNA表达.

主要成果:

ECHBT对δ5D,δ6D和Elovl-5的mRNA进行表达,这些酶对LC-PUFA合成至关重要.
酶表达从胆乳增加到成熟的HM.
在成熟的HM中,与胆乳相比,阿拉基酸和多可萨赫萨酸 (DHA) 的百分比下降,在酶mRNA水平和脂肪酸百分比之间发现了特定的相关性.

结论:

ECHBT拥有LC-PUFA合成的酶机制,其表达在成熟的牛奶中得到上调,以满足婴儿的需求.
乳腺在合成DHA等必需的omega-3LC-PUFA中起着重要作用,对于新生儿的神经和视网膜发育至关重要.

关键词:

脂肪酸脱化酶是一种脂肪酸脱化酶.脂肪酸会延长脂肪的时间脂肪酸,欧米茄-3 脂肪酸,欧米茄-3 脂肪酸基因表达基因表达牛奶,人类的牛奶

更多相关视频

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Enzymatic Synthesis of Epoxidized Metabolites of Docosahexaenoic, Eicosapentaenoic, and Arachidonic Acids

Published on: June 28, 2019

Mouse Mammary Epithelial Cells form Mammospheres During Lactogenic Differentiation

Mouse Mammary Epithelial Cells form Mammospheres During Lactogenic Differentiation

Published on: October 6, 2009

相关概念视频

Synthesis of Phosphatidylcholine in the ER Membrane

Synthesis of Phosphatidylcholine in the ER Membrane

The ER synthesizes lipids for building cell membranes and performing cellular functions such as energy storage and signaling. The lipid synthesis machinery embedded in the ER membrane primarily collects all reactants from the cytosol. Following synthesis, the secretory pathway and the ER contact sites distribute these lipids to other cellular organelles. Additionally, the energy-rich triacylglycerides are transported from the ER via lipid droplets.
The major components of all eukaryotic cell...

Overview of Fatty Acid Metabolism

Overview of Fatty Acid Metabolism

Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...