Hierarchical down-modulation of hemopoietic growth factor receptors

Hierarchical down-modulation of hemopoietic growth factor receptors
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造血生长因子受体的分级下调

DOI:
10.1016/0092-8674(85)90032-7
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发表时间:
1985
期刊:
影响因子:
64.5
通讯作者:
A. Burgess
A. Burgess
中科院分区:
生物学1区
文献类型:
--
作者:
F. Walker;N. Nicola;D. Metcalf;A. Burgess

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当来自小鼠骨髓的祖细胞被四种不同的集落刺激因子(Multi-CSF(IL-3)、GM-CSF、G-CSF和M-CSF(CSF-1))中的任一种刺激时,可以在体外产生粒细胞和巨噬细胞。在0%时,四种CSF不交叉竞争与骨髓细胞结合,表明每种CSF具有特异性细胞表面受体。然而,在21%或3 PC时,Multi-CSF抑制其他三种CSF的结合,GM-CSF抑制G-CSF和M-CSF的结合。与直接竞争受体结合不同,Multi-CSF、GM-CSF或G-CSF与其自身受体的结合诱导其他CSF受体下调(并因此激活)37%。每种类型的CSF表现出的下调活性的模式和效力与其生物活性的模式和效力相似。我们提出了一个模型,在该模型中,四个CSF的生物相互作用被解释为他们的能力,下调和激活谱系特异性受体。
Granulocytes and macrophages can be produced in vitro when progenitor cells from mouse bone marrow are stimulated by any of four distinct colony stimulating factors, Multi-CSF (IL-3), GM-CSF, G-CSF, and M-CSF (CSF-1). At 0% the four CSFs do not crosscompete for binding to bone marrow cells, indicating that each has a specific cell surface receptor. However, at 21% or 3PC, Multi-CSF inhibits binding of the other three CSFs and GM-CSF inhibits binding of G-CSF and M-CSF. Rather than competing directly for receptor binding, the binding of Multi-CSF, GM-CSF, or G-CSF to their own receptor induces the downmodulation (and thus activation) of other CSF receptors at 37%. The pattern and potency of downmodulation activity exhibited by each type of CSF parallels the pattern and potency of its biological activity. We propose a model in which the biological interactions of the four CSFs are explained by their ability to down-modulate and activate lineage-specific receptors.
DOI: --
发表时间: 1984
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影响因子: --
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影响因子: --
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