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Proteomic responses of carotenoid and retinol administration to Mongolian gerbils†
Food & Function ( IF 5.1 ) Pub Date : 2018-06-14 00:00:00 , DOI: 10.1039/c8fo00278a
Torsten Bohn 1, 2, 3, 4, 5 , Sébastien Planchon 4, 5, 6, 7 , Céline C. Leclercq 4, 5, 6, 7 , Jenny Renaut 4, 5, 6, 7 , Johanna Mihaly 8, 9, 10, 11 , Gabriella Beke 8, 9, 10, 11 , Ralph Rühl 8, 9, 10, 11, 12
Affiliation  

Various health benefits of carotenoids have been described. However, while human observational studies generally suggest positive health effects, supplementation with relatively high doses of individual carotenoids (supplements) have partly produced adverse effects. In the present study, we investigated the effect of several carotenoids on the proteomic response of male Mongolian gerbils (aged 6 weeks). Five groups of gerbils (n = 6 per group) received either retinol (vitamin A/53 mg per kg bw), all-trans β-carotene (pro-vitamin A/100 mg kg−1), the non-pro vitamin A carotenoid lutein (100 mg kg−1), the acyclic carotenoid lycopene (100 mg kg−1) or vehicle (Cremophor EL), via oral single gavage. Gerbils were 12 h post-prandially sacrificed and blood plasma, liver, and white adipose tissue were collected. For liver and adipose tissue, a 2D-DIGE (difference gel electrophoresis) approach was conducted; for plasma, proteomic analyses were achieved by liquid chromatography-mass spectrometry. Compared to controls (vehicle), various proteins were showing significant abundance variations in plasma (66), liver (29) and adipose tissue (19), especially regarding structure (22), protein metabolism (15) and immune system/inflammation (19) functions, while proteins related to antioxidant effects were generally less abundant, suggesting no in vivo relevance. Surprisingly, a large overlap in protein regulation was found between lycopene and retinol exposure, while other carotenoids, including all-trans β-carotene, did not show this overlap. Mainly retinoid acid receptor co-regulated proteins may mechanistically explain this overlapping regulation. This overlapping regulation may be related to common nuclear hormone receptor mediated signalling, though further studies using synthetic ligands of retinoid receptors targeting protein regulation are needed for confirmation.

中文翻译:

类胡萝卜素和视黄醇对蒙古沙鼠的蛋白质组学响应

已经描述了类胡萝卜素的各种健康益处。然而,尽管人类观察性研究通常显示出对健康的积极影响,但补充相对较高剂量的单个类胡萝卜素(补充剂)在一定程度上产生了不利影响。在本研究中,我们调查了几种类胡萝卜素对雄性蒙古沙鼠(6周龄)蛋白质组反应的影响。五组沙鼠(每组n = 6)接受视黄醇(维生素A / 53毫克/千克体重),全反式β-胡萝卜素(维生素原A / 100毫克千克-1),非维生素A类胡萝卜素叶黄素(100 mg kg -1),无环类胡萝卜素番茄红素(100 mg kg -1)或媒介物(Cremophor EL),通过口服单管饲。餐后12小时杀死沙鼠,收集血浆,肝脏和白色脂肪组织。对于肝脏和脂肪组织,进行了2D-DIGE(差异凝胶电泳)方法。对于血浆,蛋白质组学分析通过液相色谱-质谱法完成。与对照(车辆)相比,各种蛋白质在血浆(66),肝脏(29)和脂肪组织(19)中表现出明显的丰度变化,特别是在结构(22),蛋白质代谢(15)和免疫系统/炎症(19)方面。 )功能,而与抗氧化作用相关的蛋白质通常较少,提示体内没有关联。令人惊讶的是,在番茄红素和视黄醇的暴露之间发现在蛋白质调节方面有很大的重叠,而其他类胡萝卜素,包括全反式β-胡萝卜素,没有显示出这种重叠。主要是类维生素A受体共调节蛋白可以从机械上解释这种重叠调节。这种重叠的调节可能与常见的核激素受体介导的信号传导有关,尽管需要进一步研究使用类视黄醇受体的合成配体靶向蛋白质调节,以进行确认。
更新日期:2018-06-14
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