Bioavailability and provitamin A activity of neurosporaxanthin in mice.

Bioavailability and provitamin A activity of neurosporaxanthin in mice.
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DOI:
10.1038/s42003-023-05446-1
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发表时间:
2023-10-20
影响因子:
5.9
通讯作者:
Amengual, Jaume
Amengual, Jaume
中科院分区:
生物学2区
文献类型:
--
作者:
Miller, Anthony P.;Hornero-Mendez, Damaso;Bandara, Sepalika;Parra-Rivero, Obdulia;Limon, M. Carmen;von Lintig, Johannes;Avalos, Javier;Amengual, Jaume

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各种子囊菌合成羧基类胡萝卜素脉孢黄质。这种叶黄素的独特化学结构表明:(1)与其他类胡萝卜素相比,它的羧基末端和较短的长度增加了脉孢黄质的极性,(2)它含有未取代的β-紫罗兰酮环,赋予形成维生素A的潜力。在此之前,在藤仓镰刀菌,这使我们能够在体外试验中表征其抗氧化性能,优化了脉孢黄质的生产。在这项研究中,我们评估了与其他维生素A原类胡萝卜素相比,脉孢黄质在小鼠中的生物利用度,并检查了它是否可以被两种类胡萝卜素切割酶切割:β-胡萝卜素加氧酶1(BCO 1)和2(BCO 2)。使用Bco 1 −/− Bco 2 −/−小鼠,我们报告说,脉孢黄质显示出比β-胡萝卜素和β-隐黄素更高的生物利用度,这一点可以通过更高的积累和减少的粪便消除来证明。用纯化的BCO 1和BCO 2进行的酶促测定,以及在野生型、Bco 1 −/−、Bco 2 −/−和Bco 1 −/− Bco 2 −/−小鼠中进行的喂养研究表明,脉孢黄质是两种类胡萝卜素裂解酶的底物。喂食脉孢黄质的野生型小鼠显示出与喂食β-胡萝卜素的小鼠相当数量的维生素A。总之,我们的研究揭示了脉孢黄质作为一种具有维生素原A活性的高生物利用度真菌类胡萝卜素,突出了其作为一种新型食品添加剂的潜力。真菌的羧基类胡萝卜素脉孢黄质比其他类胡萝卜素吸收率更高,它可以在小鼠体内裂解形成维生素A。这些发现表明,脉孢黄质可能是人类有吸引力的维生素A来源。
Various species of ascomycete fungi synthesize the carboxylic carotenoid neurosporaxanthin. The unique chemical structure of this xanthophyll reveals that: (1) Its carboxylic end and shorter length increase the polarity of neurosporaxanthin in comparison to other carotenoids, and (2) it contains an unsubstituted β-ionone ring, conferring the potential to form vitamin A. Previously, neurosporaxanthin production was optimized in Fusarium fujikuroi, which allowed us to characterize its antioxidant properties in in vitro assays. In this study, we assessed the bioavailability of neurosporaxanthin compared to other provitamin A carotenoids in mice and examined whether it can be cleaved by the two carotenoid-cleaving enzymes: β-carotene-oxygenase 1 (BCO1) and 2 (BCO2). Using Bco1−/−Bco2−/− mice, we report that neurosporaxanthin displays greater bioavailability than β-carotene and β-cryptoxanthin, as evidenced by higher accumulation and decreased fecal elimination. Enzymatic assays with purified BCO1 and BCO2, together with feeding studies in wild-type, Bco1−/−, Bco2−/−, and Bco1−/−Bco2−/− mice, revealed that neurosporaxanthin is a substrate for either carotenoid-cleaving enzyme. Wild-type mice fed neurosporaxanthin displayed comparable amounts of vitamin A to those fed β-carotene. Together, our study unveils neurosporaxanthin as a highly bioavailable fungal carotenoid with provitamin A activity, highlighting its potential as a novel food additive. The fungal carboxylic carotenoid neurosporaxanthin is absorbed at greater rates than other carotenoids, and it can be cleaved to form vitamin A in mice. These findings suggest neurosporaxanthin could be an attractive vitamin A source for humans.
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DOI: 10.1074/jbc.m113.501049
发表时间: 2013-11-22
影响因子: 4.8
作者:
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DOI: 10.1016/j.biocel.2012.07.026
发表时间: 2012-11-01
影响因子: 4
作者:
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