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Cell Metab:更佳膳食氨基酸比例有望通过个体基因组信息来科学匹配

2017-03-18 MedSci MedSci原创

合理匹配个体营养需求对机体的生长、发育、繁殖和寿命至关重要,然而,如何量化一个均衡的饮食是有挑战性的。

相对于其他营养素而言,平衡膳食蛋白质的数量和质量是决定适应性进化的一个关键因素。既往饮食平衡的理论主要是实证性的减少摄入和调整饮食,但这并非是决定合适膳食氨基酸比例的最佳方法。

在这一期的Cell Metabolism杂志中,来自澳大利亚莫纳什大学的Matthew D.W. Piper及其同事发现可以根据个体的基因组来匹配最佳膳食氨基酸比例,且少量的得到优化的蛋白质即可同时兼顾食欲、生长、繁殖和寿命的需求。

该研究组首先假设动物的氨基酸需求是由基因组决定的,通过计算机分析机体基因组信息来推断其饮食中的氨基酸需求比例,然后对果蝇和小鼠进行外显子匹配饮食喂养。他们发现:外显子组匹配的饮食可以减少果蝇和小鼠的随意进食,且可增强果蝇早期适应度而不缩短寿命。此外,小鼠实验表明外显子组匹配的饮食在哺乳动物中具有可行性。

该研究提出的外显子匹配原理,为兼顾食欲、生长、繁殖和寿命并增强食物生物利用度且有利于保持机体长期的健康的膳食氨基酸平衡提供了一个理论依据。

原始出处:

Piper MD, Soultoukis GA, Blanc E, et al.Matching Dietary Amino Acid Balance to the In Silico-Translated Exome Optimizes Growth and Reproduction without Cost to Lifespan. Cell Metabolism Volume 25, Issue 3, p610–621, 7 March 2017. http://dx.doi.org/10.1016/j.cmet.2017.02.005

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    2017-09-04 一闲
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    2017-06-20 guojianrong
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    2017-12-26 维他命
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    2017-03-20 zhaojie88

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