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首页> 外文期刊>Cell biology international. >Single short-term signal that enhances cooperative activity of old rat hepatocytes acts for several days.
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Single short-term signal that enhances cooperative activity of old rat hepatocytes acts for several days.

机译:增强老年大鼠肝细胞协作活性的单个短期信号持续数天。

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Primary cultures of rat hepatocytes were studied in serum-free medium. Ultradian protein synthesis rhythm was used as a marker of overall cell synchronization and cooperation amongst the population. The level of synchronization was determined by amplitudes of the rhythm. Low synchronization of old rat hepatocytes can be enhanced by addition of either gangliosides or phenylephrine to the medium. Incubation of cultures with gangliosides lasted for 2.5 h, while action of phenylephrine was only for 2 min. The amplitude of protein synthesis rhythm was increased 1.5-2 times. In cultures transferred to a fresh normal medium, this increased amplitude was observed for at least 2-3 days. Thus, both gangliosides and phenyleprine are triggers, which, as shown earlier, initiated calcium-dependent processes in the cytoplasm. The results are discussed in the light of concept of the cell self-organization by a direct cell-cell communication.
机译:在无血清培养基中研究了大鼠肝细胞的原代培养。 Ultradian蛋白质合成节奏被用作群体中总体细胞同步与合作的标志。同步水平由节奏幅度决定。可通过向培养基中添加神经节苷脂或去氧肾上腺素来增强老年大鼠肝细胞的低同步性。用神经节苷脂培养的培养物持续2.5小时,而去氧肾上腺素的作用仅持续2分钟。蛋白质合成节律的振幅增加了1.5-2倍。在转移到新鲜正常培养基中的培养物中,观察到这种增加的幅度至少2-3天。因此,神经节苷脂和去氧肾上腺素都是触发物,如前所述,它们在细胞质中引发钙依赖性过程。根据通过直接细胞-细胞通信的细胞自组织的概念来讨论结果。

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