Nutrient acquisition strategies of mammalian cells.

Nutrient acquisition strategies of mammalian cells.
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DOI:
10.1038/nature22379
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发表时间:
2017-06-07
期刊:
影响因子:
64.8
通讯作者:
Thompson CB
Thompson CB
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Palm W;Thompson CB

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哺乳动物细胞被多种营养物质包围,包括葡萄糖、氨基酸、各种大分子和微量营养素,它们可以通过跨膜转运蛋白和内溶酶体途径输入。通过利用不同的营养来源,细胞获得代谢灵活性,以在饥饿时期生存。静止的细胞吸收足够的营养来维持体内平衡。然而,增殖细胞依赖于生长因子诱导的营养吸收增加,以支持生物量的形成。在这里,我们回顾细胞营养获取策略和它们的调节生长因子和细胞内营养传感器。我们进一步讨论癌基因和肿瘤抑制因子如何促进营养摄取,从而支持癌细胞的存活和生长。
Mammalian cells are surrounded by diverse nutrients including glucose, amino acids, various macromolecules and micronutrients, which they can import through transmembrane transporters and endolysosomal pathways. By utilizing different nutrient sources, cells gain metabolic flexibility to survive periods of starvation. Quiescent cells take up sufficient nutrients to sustain homeostasis. However, proliferating cells depend on growth factor-induced increases in nutrient uptake to support biomass formation. Here, we review cellular nutrient acquisition strategies and their regulation by growth factors and cell-intrinsic nutrient sensors. We further discuss how oncogenes and tumour suppressors promote nutrient uptake, thereby supporting cancer cell survival and growth.
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