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牛奶停滞对乳腺卷发和微RNA特征的影响

S Lanctôt¹, R Blouin¹, C Thibault²

¹Département de Biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada.

Journal of dairy science

|May 24, 2024

概括

牛的牛奶静止会通过积累自身隐性因子,触发乳腺内发. 这一过程改变了牛奶成分和microRNA配置文件,影响了牛奶产量恢复.

科学领域:

乳制品科学乳制品科学
动物繁殖动物繁殖
分子生物学分子生物学

背景情况:

乳腺内置是哺乳期停止后的自然过程.
几十年来,人们一直假设牛奶中诱导内流的自因子的存在.

研究的目的:

为了提供关于引发母乳腺内置的自因子的证据,在奶牛中.
为了研究牛奶停滞对卷积标记和microRNA配置文件的影响.

主要方法:

在乳母牛的特定区域试验诱导牛奶静止.
输注乳腺分泌物以评估自身隐性效应.
测量卷积标记 (SCC,BSA,乳酸) 和牛奶成分.
在乳腺分泌物中分析微RNA表达.

主要成果:

牛奶停滞导致牛奶内流标记增加,牛奶成分发生变化.
从静止区注入乳腺分泌物加剧了内发症标志物.
在经历了较长时间牛奶停滞的季度,牛奶产量恢复减少.
观察到特定微RNAs (bta-miR-221, bta-miR-223) 的差异表达.

结论:

结果支持牛奶传递的自身隐性因子的存在,这些因子启动乳腺侵入.
牛奶停滞改变了乳腺分泌物的微RNA特征.
需要进一步的研究来确定miRNA变化是否是卷积的原因或后果.

关键词:

自克林调节的自克林调节.乳房反抑制剂乳房反抑制剂进化,进化,进化,进化,进化,进化这是一个微型RNA.

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相关概念视频

MicroRNAs

MicroRNAs

MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...