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首页> 外文期刊>Physiological Reports >Hyperosmolality regulates UT?¢????A6 urea transporter expression in the Caco?¢????2 cell line
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Hyperosmolality regulates UT?¢????A6 urea transporter expression in the Caco?¢????2 cell line

机译:高渗透压调节Caco 2细胞系中UT 3 A 6尿素转运蛋白的表达。

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Gastrointestinal facilitative urea transporters play a significant role in the urea nitrogen salvaging process, which supports the symbiotic relationship between mammals and their gut microbial populations. UT?¢????A6 urea transporters have been previously reported in the human gastrointestinal tract, specifically in the colon. As renal UT?¢????A transporters can be regulated by external osmolality, this study investigated whether UT?¢????A6 expression could also be regulated in this manner. Initial end?¢????point RT?¢????PCR experiments confirmed UT?¢????A6 expression along the human gastrointestinal tract (colon????>????small intestine?????¢????????stomach) and also in the Caco?¢????2 intestinal cell line. Using Caco?¢????2 cells exposed for 24????hours to changed external osmotic conditions (from 350 to 250, 500, or 600????mOsm), end?¢????point PCR suggested UT?¢????A6 expression increased in hyperosmotic conditions. Using quantitative PCR, it was confirmed that 24????h exposure to 600????mOsm stimulated a significant ~15?¢????fold increase in UT?¢????A6 expression ( P ????
机译:胃肠道促进性尿素转运蛋白在尿素氮的拯救过程中起着重要作用,这支持了哺乳动物与其肠道微生物种群之间的共生关系。先前已经在人胃肠道中,特别是在结肠中报道了UTβA6尿素转运蛋白。由于肾转运蛋白可以通过外部渗透压调节,因此本研究调查了是否也可以以这种方式调节转运蛋白A6的表达。起始点是RT点,PCR实验证实了UT6在人胃肠道中的表达(冒号)。胃)和Caco?2肠细胞系。使用2个细胞暴露于外部渗透条件变化(从350到250、500或600 mOsm)的Caco ??????? 24小时,建议进行终点PCR。在高渗条件下,UTA6 A6表达增加。使用定量PCR,证实24小时暴露于600μmmOsm刺激UT6αA6表达显着增加约15倍。 ≤0.001,N≤5,方差分析。最后,抑制性实验表明蛋白激酶C和钙参与了该高渗刺激的调节途径。总之,这些数据表明UT 6 -A6表达确实受外部渗透压的调节。这种调节过程对胃肠道尿素转运的生理意义尚未确定。

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