肠道KLHL12对于脂质吸收和基洛米克朗代谢是不可或缺的
Zhiming Zhao1, Wei Lu1, Changwei Li1
1Department of Comparative Biosciences, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States.
概括
凯尔奇样蛋白12 (KLHL12) 不会影响肠道脂质吸收或基洛米克朗代谢. 缺少KLHL12的肠特异性淘汰小鼠没有显示体重或血清脂质的变化,这表明它们在这些过程中没有重要作用.
科学领域:
- 细胞生物学 细胞生物学
- 代谢过程中的代谢.
- 胃肠病学 胃肠病学
背景情况:
- 凯尔奇样蛋白12 (KLHL12) 调节COPII介导的大型货物的贩运,包括非常低密度脂蛋白 (VLDL).
- 肠道脂质的吸收和基洛米克朗的新陈代谢依赖于阿波利波蛋白B-48 (ApoB48) 和COPII介导的运输.
研究的目的:
- 调查肠道KLHL12在食脂质吸收和胆米克朗组合中的作用.
- 评估KLHL12缺乏对不同饮食条件下的小鼠代谢表型的影响.
主要方法:
- Klhl12肠特异性淘汰 (IKO) 鼠的生成.
- 通过油和禁食/高脂肪饮食再食来评估脂质吸收的体内评估.
- 对血清脂质水平,体重和肠道ApoB48表达的分析.
主要成果:
- Klhl12 IKO小鼠与对照组相比,血清脂质水平或体重增加没有显著变化.
- Klhl12 IKO小鼠的肠道ApoB48水平增加,但血清ApoB水平保持不变.
- 在或西方饮食挑战下,没有观察到脂质吸收或代谢表型的显著差异.
结论:
- 肠道KLHL12对于食脂质吸收和基洛米克朗代谢并不重要.
- 在肝脏和肠道之间,含有Apolipoprotein B的脂蛋白分泌的调节可能会有所不同.
- 在COPII中介的贩运中,KLHL12的作用似乎对肠道脂质稳定不至关重要.
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