Innate Nutritional Immunity.

Innate Nutritional Immunity.
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DOI:
10.4049/jimmunol.1800325
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发表时间:
2018-07-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Soares MP
Soares MP
中科院分区:
其他
文献类型:
--
作者:
Núñez G;Sakamoto K;Soares MP

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铁是微生物及其宿主所必需的微量营养素。铁的生物重要性来自于它作为一种通用的氧化还原催化剂的固有能力,它参与了各种对维持生命至关重要的生化过程。动物进化出几种机制来保留和限制铁对病原微生物的有效性,这种抵抗机制被称为“营养免疫”。同样,病原微生物共同进化,部署各种有效的机制,从宿主那里获取铁,并在这样做的过程中克服营养免疫。在这篇综述中,我们讨论了天然免疫系统如何调节铁的代谢以阻止病原微生物接触铁,以及病原体获取铁的策略如何绕过这些抗性机制。
Iron (Fe) is an essential micronutrient for both microbes and their hosts. The biologic importance of Fe derives from its inherent ability to act as a universal redox catalyst, co-opted in a variety of biochemical processes critical to maintain life. Animals evolved several mechanisms to retain and limit Fe availability to pathogenic microbes, a resistance mechanism termed “nutritional immunity”. Likewise, pathogenic microbes co-evolved to deploy diverse and efficient mechanisms to acquire Fe from their hosts and in doing so overcome nutritional immunity. In this review, we discuss how the innate immune system regulates Fe metabolism to withhold Fe from pathogenic microbes and how strategies used by pathogens to acquire Fe circumvent these resistance mechanisms.
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