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Mitral Valve Prolapse III: Nursing Management
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从红色素前体细胞的细胞核的巨细胞依赖脂氨酸的吞
Hideyuki Yoshida1, Kohki Kawane, Masato Koike
1Department of Genetics, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan.
Nature
|September 30, 2005
概括
在红细胞形成过程中,巨细胞吞了红细胞核. 细胞核在脱离网状细胞后暴露酸,在这个关键的红色素形成过程中向巨细胞发出清除信号.
科学领域:
- 细胞生物学 细胞生物学
- 血液学 血液学 血液学
- 发展生物学 发展生物学
背景情况:
- 红细胞形成的过程,通常发生在骨髓或胎儿肝脏中.
- 在晚期的红细胞形成过程中,红细胞核被驱逐出并被巨细胞吞,形成称为血液岛屿的结构.
研究的目的:
- 为了阐明核驱逐和随后的吞的机制由红细胞形成过程中巨细胞.
- 为了识别参与识别和清除被驱逐的红细胞核的分子信号.
主要方法:
- 隔离的晚期红细胞从脏的瘤化小鼠.
- 在体外培养红细胞以观察核突起和脱落.
- 核酸素暴露的调查和牛奶脂肪球体EGF8 (MFG-E8) 在吞中的作用.
主要成果:
- 核被巨细胞吞,只有在与网状细胞断开连接之后.
- 被驱逐的红细胞核在它们的表面迅速暴露脂胺,作为"吃我"信号.
- 胎儿肝脏巨细胞有效地吞了这些核,这种过程通过用MFG-E8.8掩盖脂胺酶来抑制.
结论:
- 在脱离的红细胞核上酸的暴露是巨吞的关键信号.
- 该过程涉及自发的核突起,脱落和信号暴露,随后是高效的巨细胞清除.
- 这种机制确保了在最终的红色素形成过程中排出的核的去除.
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