[EN] COMPOSITIONS COMPRISING SELENIUM AND USE OF SAME FOR THE TREATMENT AND PREVENTION OF DISEASE OR CONDITIONS ASSOCIATED WITH MITOCHONDRIAL DYSFUNCTION<br/>[FR] COMPOSITIONS COMPRENANT DU SÉLÉNIUM ET UTILISATION DE CELLES-CI POUR LE TRAITEMENT ET LA PRÉVENTION DE MALADIE OU D'ÉTATS ASSOCIÉS AVEC UN DYSFONCTIONNEMENT MITOCHONDRIAL
申请人:ALLTECH INC
公开号:WO2014144776A1
公开(公告)日:2014-09-18
The present application relates to compositions comprising selenium (e.g., selenium enriched yeast and selenium containing compounds obtained or derived therefrom) and methods of using the same to treat and inhibit obesity, diabetes and related conditions. In particular, the present application provides compositions comprising selenium enriched yeast (e.g., selenium enriched yeast comprising 2% or less inorganic selenium), selenium containing compounds present therein and/or derived therefrom, and methods of using the same to enhance mitochondrial activity and function (e.g., in skeletal muscle and liver) in a subject (e.g., as a therapeutic and/or prophylactic treatment for diabetes, obesity and related conditions).
Research on 2,3-dihydroxy-propionyl derivatives of selenocysteine has now been facilitated by providing a method for synthesis and clean-up.
对硒蛋氨酸的2,3-二羟基丙酰衍生物的研究现在已经得到促进,通过提供一种合成和清洗的方法。
Can dimedone be used to study selenoproteins? An investigation into the reactivity of dimedone toward oxidized forms of selenocysteine
作者:N. Connor Payne、Drew R. Barber、Erik L. Ruggles、Robert J. Hondal
DOI:10.1002/pro.3390
日期:2019.1
Dimedone is a widely used reagent to assess the redox state of cysteine‐containing proteins as it will alkylate sulfenicacid residues, but not sulfinic acid residues. While it has been reported that dimedone can label selenenic acid residues in selenoproteins, we investigated the stability, and reversibility of this label in a model peptide system. We also wondered whether dimedone could be used to
Dimedone是一种广泛用于评估含半胱氨酸蛋白质的氧化还原状态的试剂,因为它将烷基化亚硫酸残基,而不是亚硫酸残基。虽然有报道说二甲酮可以标记硒蛋白中的硒酸残基,但我们在模型肽系统中研究了该标记的稳定性和可逆性。我们还想知道二甲酮是否可用于检测硒酸残基。我们使用苯磺酸,苯硒酸和含硒代半胱氨酸的肽模型来研究与二甲酮可能发生的反应。这些肽与H 2 O 2一起孵育在二甲酮存在下进行反应,然后进行液相色谱/电喷雾电离质谱(LC / ESI-MS)。天然肽H-PTVTGCUG-OH(与哺乳动物硫氧还蛋白还原酶C端的天然氨基酸序列相对应)不能被二甲酮烷基化,但可以被碘乙酸羧甲基化。但是,可以在低浓度的H 2 O 2中用二甲酮标记“突变肽” H-PTVTGAUG-OH ,但通过添加硫醇可逆反应。由于这种烷基化反应的可逆性,我们得出结论,二甲酮不是检测硒蛋白中硒酸的良好试剂。在高浓度的H 2 O 2中,从肽中消除了硒,可以使用LCMS和1
de Marco,C. et al., Gazzetta Chimica Italiana, 1976, vol. 106, p. 211 - 213