Isothiocyanates

异硫氰酸酯
  • 文章类型: Journal Article
    从Eutremajaponicum中分离出的异硫氰酸甲基亚磺基己酯(6-MSITC)是治疗乳腺癌的有希望的候选药物,结直肠癌和胃癌,代谢综合征,心脏病,糖尿病,和肥胖,由于其抗炎和抗氧化特性。此外,它的神经保护特性,改善认知功能和保护多巴胺能神经元,使其成为治疗神经退行性疾病如痴呆症的优秀候选药物,老年痴呆症,和帕金森病。6-MSITC作用于许多信号通路,如PPAR,AMPK,PI3K/AKT/mTOR,Nrf2/Keap1-ARE,ERK1/2-ELK1/CHOP/DR5和MAPK。然而,尽管体外和体内动物研究以及一些人体研究取得了非常有希望的结果,该分子尚未在人群中进行彻底测试。尽管如此,芥末应被归类为人类疾病一级和二级预防的“超级食品”。本文回顾了当前关于6-MSITC的最新研究及其潜在的临床应用,详细讨论了该分子激活的信号通路及其相互作用。
    Methylsulfinyl hexyl isothiocyanate (6-MSITC) isolated from Eutrema japonicum is a promising candidate for the treatment of breast cancer, colorectal and stomach cancer, metabolic syndrome, heart diseases, diabetes, and obesity due to its anti-inflammatory and antioxidant properties. Also, its neuroprotective properties, improving cognitive function and protecting dopaminergic neurons, make it an excellent candidate for treating neurodegenerative diseases like dementia, Alzheimer\'s, and Parkinson\'s disease. 6-MSITC acts on many signaling pathways, such as PPAR, AMPK, PI3K/AKT/mTOR, Nrf2/Keap1-ARE, ERK1/2-ELK1/CHOP/DR5, and MAPK. However, despite the very promising results of in vitro and in vivo animal studies and a few human studies, the molecule has not yet been thoroughly tested in the human population. Nonetheless, wasabi should be classified as a \"superfood\" for the primary and secondary prevention of human diseases. This article reviews the current state-of-the-art research on 6-MSITC and its potential clinical uses, discussing in detail the signaling pathways activated by the molecule and their interactions.
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  • 文章类型: Journal Article
    与烯丙基反应-,乙酰-,在3-氨基-4,6-二甲基吡啶-2(1H)-酮的基础上研究了异硫氰酸苯酯,3-氨基-4-苯基吡啶-2-酮,和3-氨基-4-(噻吩-2-基)吡啶-2(1H)-酮(苯甲酰基-)异硫氰酸酯,得到相应的硫脲衍生物8-11a-c。与标准药物阿卡波糖相比,获得了十二种硫脲衍生物,并研究了它们对α-葡萄糖苷酶的抗糖尿病活性。比较药物阿卡波糖在15mM的浓度下抑制α-葡糖苷酶的活性达46.1%(阿卡波糖的IC50为11.96mM)。根据所进行的研究的结果,结果表明,烷基和苯基硫脲衍生物8,9a-c,与它们的乙酰基-(苯甲酰基)衍生物和10,11a-c相反,显示高抗糖尿病活性。因此,1-(4,6-二甲基-2-氧代-1,2-二氢吡啶-3-基)-3-苯基硫脲9a对酶α-葡萄糖苷酶具有最高的抑制活性,超过比较药物阿卡波糖的活性,其在15mm的浓度下抑制α-葡糖苷酶的活性56.6%(IC50=9,77mM)。1-(6-甲基-2-氧代4-(噻吩-2-基)-1,2-二氢吡啶-3-基)-3-苯基硫脲9c对酶α-葡萄糖苷酶具有抑制活性,与比较药物阿卡波糖相当,抑制α-葡萄糖苷酶的活性,浓度为15mm/41.2%(IC50=12,94mM)。化合物8a,8b,和9b显示出抑制酶α-葡萄糖苷酶的活性,与阿卡波糖相比活性较低,抑制浓度为15mM的α-葡萄糖苷酶的活性23.3%,26.9%,和35.2%,分别。化合物8a对α-葡萄糖苷酶的IC50,8b,发现9b为16.64mM,19.79mM,和21.79mM,分别。其他化合物8c,10a,10b,10c,11a,11b,和11c未显示对α-葡糖苷酶的抑制活性。因此,基于3-氨基吡啶-2(1H)-酮的新合成的硫脲衍生物是进一步修饰和研究其潜在抗糖尿病活性的有希望的候选者。这些积极的生物分析结果将刺激进一步深入的研究,包括体内模型。
    Reactions with allyl-, acetyl-, and phenylisothiocyanate have been studied on the basis of 3-amino-4,6-dimethylpyridine-2(1H)-one, 3-amino-4-phenylpyridine-2-one, and 3-amino-4-(thiophene-2-yl)pyridine-2(1H)-one (benzoyl-)isothiocyanates, and the corresponding thioureide derivatives 8-11a-c were obtained. Twelve thiourea derivatives were obtained and studied for their anti-diabetic activity against the enzyme α-glucosidase in comparison with the standard drug acarbose. The comparison drug acarbose inhibits the activity of α-glucosidase at a concentration of 15 mM by 46.1% (IC50 for acarbose is 11.96 mM). According to the results of the conducted studies, it was shown that alkyl and phenyl thiourea derivatives 8,9a-c, in contrast to their acetyl-(benzoyl) derivatives and 10,11a-c, show high antidiabetic activity. Thus, 1-(4,6-dimethyl-2-oxo-1,2-dihydropyridin-3-yl)-3-phenylthiourea 9a has the highest inhibitory activity against the enzyme α-glucosidase, exceeding the activity of the comparison drug acarbose, which inhibits the activity of α-glucosidase by 56.6% at a concentration of 15 mm (IC50 = 9,77 mM). 1-(6-methyl-2-oxo 4-(thiophen-2-yl)-1,2-dihydropyridin-3-yl)-3-phenylthiourea 9c has inhibitory activity against the enzyme α-glucosidase, comparable to the comparison drug acarbose, inhibiting the activity of α-glucosidase at a concentration of 15 mm per 41.2% (IC50 = 12,94 mM). Compounds 8a, 8b, and 9b showed inhibitory activity against the enzyme α-glucosidase, with a lower activity compared to acarbose, inhibiting the activity of α-glucosidase at a concentration of 15 mM by 23.3%, 26.9%, and 35.2%, respectively. The IC50 against α-glucosidase for compounds 8a, 8b, and 9b was found to be 16.64 mM, 19.79 mM, and 21.79 mM, respectively. The other compounds 8c, 10a, 10b, 10c, 11a, 11b, and 11c did not show inhibitory activity against α-glucosidase. Thus, the newly synthesized derivatives of thiourea based on 3-aminopyridine-2(1H)-ones are promising candidates for the further modification and study of their potential anti-diabetic activity. These positive bioanalytical results will stimulate further in-depth studies, including in vivo models.
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  • 文章类型: Journal Article
    糖尿病肾病是终末期肾病的主要原因。导致组织氧张力降低的肾脏氧稳态变化是引发糖尿病肾功能改变的重要因素。然而,导致氧稳态改变的机制尚不清楚。先前已经证明了高血糖诱导的活性氧的产生和对它们的改变的反应。在本研究中,用DL-萝卜硫烷慢性治疗诱导核因子红细胞2相关因子2(Nrf2)表达,与抗氧化反应元件结合的主转录调节因子诱导对活性氧的保护增加,正在研究。
    使用链脲佐菌素将Sprague-Dawley大鼠制成糖尿病大鼠,不加治疗或每天皮下注射DL-莱茵硫素4周。年龄匹配的非糖尿病大鼠作为对照。治疗4周后,使用硫丁巴比妥麻醉大鼠,根据肾小球滤过率(GFR)研究肾功能,肾血流量(RBF),钠运输,肾脏耗氧量,和肾氧张力。从肾皮质组织中分离线粒体,并使用高分辨率呼吸测量法进行研究。
    糖尿病患者的GFR增加,但RBF不增加,导致糖尿病患者的过滤分数增加。DL-萝卜硫素治疗不影响对照组的RBF和GFR,但降低了糖尿病患者的相同参数。GFR增加导致钠转运和耗氧量增加,因此,与对照组相比,糖尿病患者的效率降低。糖尿病患者的氧消耗增加导致皮质组织氧张力降低。DL-萝卜硫素治疗降低糖尿病患者的耗氧量,而运输效率没有受到显著影响。DL-萝卜硫素治疗可增加糖尿病患者的皮质pO2。
    DL-萝卜硫素治疗影响肾血流动力学,改善皮质氧张力,但不能改善线粒体效率。
    UNASSIGNED: Diabetic kidney disease is a major contributor to end stage renal disease. A change in kidney oxygen homeostasis leading to decreased tissue oxygen tension is an important factor initiating alterations in kidney function in diabetes. However, the mechanism contributing to changed oxygen homeostasis is still unclear. Hyperglycemia-induced production of reactive oxygen species and an altered response to them have previously been demonstrated. In the present study, chronic treatment with DL-sulforaphane to induce nuclear factor erythroid 2-related factor 2 (Nrf2) expression, a master transcriptional regulator binding to antioxidant response elements inducing increased protection against reactive oxygen species, is studied.
    UNASSIGNED: Sprague-Dawley rats were made diabetic using streptozotocin and either left untreated or received daily subcutaneous injections of DL-sulforaphane for 4 weeks. Age-matched non-diabetic rats served as controls. After 4 weeks of treatment, rats were anesthetized using thiobutabarbital, and kidney functions were studied in terms of glomerular filtration rate (GFR), renal blood flow (RBF), sodium transport, kidney oxygen consumption, and kidney oxygen tension. Mitochondria was isolated from kidney cortical tissue and investigated using high-resolution respirometry.
    UNASSIGNED: GFR was increased in diabetics but not RBF resulting in increased filtration fraction in diabetics. DL-sulforaphane treatment did not affect RBF and GFR in controls but decreased the same parameters in diabetics. Increased GFR resulted in increased sodium transport and oxygen consumption, hence decreased efficiency in diabetics compared to controls. Increased oxygen consumption in diabetics resulted in decreased cortical tissue oxygen tension. DL-sulforaphane treatment decreased oxygen consumption in diabetics, whereas transport efficiency was not significantly affected. DL-sulforaphane treatment increased cortical pO2 in diabetics.
    UNASSIGNED: DL-sulforaphane treatment affects renal hemodynamics, improving cortical oxygen tension but not mitochondrial efficiency.
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  • 文章类型: Journal Article
    据报道,在几种实验模型中,暴露于从常用设备发射的2.45GHz电磁辐射(EMR)会引起氧化应激。我们的研究旨在评估萝卜硫烷的疗效,一种著名的天然产品,防止由SH-SY5Y神经元样细胞和外周血单核细胞(PBMC)暴露于2.45GHzEMR24小时引起的辐射诱导的毒性作用。在存在或不存在不同浓度(5-10-25μg/mL)的萝卜硫烷的情况下,将细胞暴露于辐射24小时。细胞活力,线粒体活性改变,氧化还原标记物的转录和蛋白质水平,并对凋亡相关基因进行了研究。我们的数据显示,由EMR暴露引起的神经元样细胞和PBMC的细胞活力降低,以及5µg/mL萝卜硫烷的保护作用。最低萝卜硫烷浓度降低了ROS的产生,并增加了线粒体跨膜电位(ΔΦm)和NAD/NADH比率,被辐射暴露改变了。较高浓度的萝卜硫烷显示出有害影响。在评估编码Nrf2,SOD2的基因的表达和凋亡标志物的变化后,萝卜硫烷的激素行为也很明显。我们的研究强调了神经元样细胞对线粒体功能障碍和氧化应激的脆弱性,以及通过补充萝卜硫素减轻这些影响的可能性。据我们所知,以前没有关于暴露于2.45GHz电磁辐射时SFN对这些细胞的影响的研究。
    Exposure to 2.45 GHz electromagnetic radiation (EMR) emitted from commonly used devices has been reported to induce oxidative stress in several experimental models. Our study aims to evaluate the efficacy of sulforaphane, a well-known natural product, in preventing radiation-induced toxic effects caused by a 24 h exposure of SH-SY5Y neuronal-like cells and peripheral blood mononuclear cells (PBMCs) to 2.45 GHz EMR. Cells were exposed to radiation for 24 h in the presence or absence of sulforaphane at different concentrations (5-10-25 µg/mL). Cell viability, mitochondrial activity alterations, the transcription and protein levels of redox markers, and apoptosis-related genes were investigated. Our data showed a reduction in cell viability of both neuronal-like cells and PBMCs caused by EMR exposure and a protective effect of 5 µg/mL sulforaphane. The lowest sulforaphane concentration decreased ROS production and increased the Mitochondrial Transmembrane Potential (Δψm) and the NAD+/NADH ratio, which were altered by radiation exposure. Sulforaphane at higher concentrations displayed harmful effects. The hormetic behavior of sulforaphane was also evident after evaluating the expression of genes coding for Nrf2, SOD2, and changes in apoptosis markers. Our study underlined the vulnerability of neuronal-like cells to mitochondrial dysfunction and oxidative stress and the possibility of mitigating these effects by supplementation with sulforaphane. To our knowledge, there are no previous studies about the effects of SFN on these cells when exposed to 2.45 GHz electromagnetic radiation.
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  • 文章类型: Journal Article
    异硫氰酸烯丙酯(AITC)是芸苔属植物的刺激性成分,用作食品添加剂和调味剂,包括芥末等调味品,辣根,还有芥末.目前,有许多证据表明AITC调节葡萄糖和脂质代谢。有趣的是,AITC已被证明可以改善血糖,和胰岛素作用以及诱导T2DM大鼠血胰岛素水平下降的加深。因此,在本研究中,我们表征了AITC在宽浓度范围(5,10,25,50,100μM)在控制生存力中的作用,扩散,凋亡,线粒体状况,编码胰腺和十二指肠同源异型盒1(Pdx1)的mRNA表达,和Ins1,Ins2基因,和INS-1E细胞中的胰岛素含量。INS-1E细胞系是合适的,和特征明确的模型来研究β细胞功能。我们证明AITC降低了活力(p≤0.001)(同时存在瞬时受体电位阳离子亚家族A成员1(TRPA1)选择性拮抗剂;HC-030031;p≤0.05),和INS-1E细胞的增殖(p≤0.001)。AITC引起线粒体膜电位显着降低(p≤0.01),并降低细胞内三磷酸腺苷(ATP)水平(p≤0.001),而不影响活性氧(ROS)水平。此外,AITC抑制INS-1E细胞中胰岛素mRNA的表达(p≤0.001)以及胰岛素含量(p≤0.05)。线粒体功能障碍被认为是AITC在INS-1E细胞中的重要破坏机制,它独立于ROS,和外部钙的流入。
    Allyl isothiocyanate (AITC) is the pungent ingredient of brassica species, used as a food additive and flavoring agent, including condiments such as wasabi, horseradish, and mustard. Currently, there is much evidence that AITC modulates glucose and lipids metabolism. Interestingly, AITC has been shown to improve glycaemia, and insulin action along with the induction of a deepened decline in blood insulin levels in T2DM rats. Therefore, in the present study, we characterized the role of AITC at a wide concentration range (5, 10, 25, 50, 100 μM) in controlling viability, proliferation, apoptosis, mitochondrial condition, mRNA expression of encoding pancreatic and duodenal homeobox 1 (Pdx1), and Ins1, Ins2 genes, and insulin content in INS-1E cells. The INS-1E cell line is a suitable, and well-characterized model to study beta cell functions. We demonstrate that AITC reduced the viability (p≤0.001) (also in the presence of transient receptor potential cation subfamily A member 1 (TRPA1) selective antagonist; HC-030031; p≤0.05), and proliferation of INS-1E cells (p≤0.001). AITC evoked a significant reduction of mitochondrial membrane potential (p≤0.01) and decreased the intracellular level of adenosine triphosphate (ATP) (p≤0.001) without influence on reactive oxygen species (ROS) level. Additionally, AITC inhibited the insulin mRNA expression (p≤0.001) in INS-1E cells along with insulin content (p≤0.05). Mitochondrial dysfunction is proposed to be a significant disruption mechanism of AITC in INS-1E cells, and it was independent of ROS, and the influx of external calcium.
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  • 文章类型: Journal Article
    酰胺键是自然界中最普遍的现象之一,经常用于药物和材料设计。然而,形成酰胺键并不总是高效或高产的,特别是当用于与羧酸缀合的胺是弱亲核试剂时。这种限制排除了许多有用的氨基化合物参与缀合反应以形成酰胺。一种特别有价值的氨基化合物,它也是一种非常弱的亲核试剂,是氨基卟啉,因为它作为光敏剂的作用而受到重视,荧光剂,催化剂,或者,在金属化时,甚至是用于磁共振成像(MRI)的非常有效的造影剂。在这项工作中,我们提出了通过异硫氰酸酯共轭将非反应性胺-氨基卟啉-与羧酸快速高产率偶联。反应可以在室温下在一小时内一步完成,实现定量转化和接近完美的选择性。金属化和未金属化卟啉,以及异硫氰酸荧光素(FITC),证明了有效的缀合。为了说明所提出方法的价值,我们创造了一种新的与血清白蛋白可逆结合的血池MRI造影剂.这个新的血池特工,称为MITC-Deox(与脱氧胆酸连接的MRI异硫氰酸酯),大大减少了小鼠血管中的T1弛豫时间,保持稳定1小时,24小时后从血液中清除,并在4天后从体内清除。所提出的高效酰胺形成方法是现有偶联方法的优越替代方法,为MRI造影剂的新型合成和超越打开了一扇门。
    Amide bonds are one of the most prevalent phenomena in nature and are utilized frequently in drug and material design. However, forming amide bonds is not always efficient or high yielding, particularly when the amine used to conjugate to a carboxylic acid is a weak nucleophile. This limitation precludes many useful amino compounds from participating in conjugation reactions to form amides. A particularly valuable amino compound, which is also a very weak nucleophile, is the amino porphyrin, valued for its role as a photosensitizer, fluorescent agent, catalyst, or, upon metalation, even a very efficient contrast agent for magnetic resonance imaging (MRI). In this work, we propose fast and high-yield coupling of an unreactive amine - the amino porphyrin - to carboxylic acid via isothiocyanate conjugation. Reactions can be achieved in one step at room temperature in one hour, achieving quantitative conversion and near perfect selectivity. Both metalated and unmetalated porphyrin, as well as fluorescein isothiocyanate (FITC), demonstrated efficient conjugation. To illustrate the value of the proposed method, we created a new blood-pool MRI contrast agent that reversibly binds to serum albumin. This new blood-pool agent, known as MITC-Deox (MRI isothiocyanate that links with deoxycholic acid), substantially reduced T1 relaxation times in blood vessels in mice, remained stable for 1 hour, cleared from blood by 24 hours, and was eliminated from the body after 4 days. The proposed method for efficient amide formation is a superior alternative to existing coupling methods, opening a door to novel synthesis of MRI contrast agents and beyond.
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  • 文章类型: Journal Article
    多药耐药(MDR)金黄色葡萄球菌感染严重威胁全球健康。随着对当前抗生素的耐药性上升和解决方案有限,新的紧急发现,有效,低毒性的负担得起的抗菌药物对于对抗多种MDR金黄色葡萄球菌菌株至关重要。因此,在这项研究中,我们介绍了一种基于计算机植物化学的方法来发现新型抗菌剂,强调计算方法在治疗发现中的潜力。来自辣木的葡糖肌醇异硫氰酸酯(GMG-ITC)。是具有多种生物活性的植物化学化合物之一,包括抗菌药物,抗炎,和抗氧化活性,并且对金黄色葡萄球菌也有效。这项研究的重点是筛选GMG-ITC作为一种潜在的候选药物,通过分子对接方法对抗MDR金黄色葡萄球菌感染。此外,相互作用氨基酸分析,计算机药代动力学,复合目标预测,途径富集分析和分子动力学(MD)模拟进行了进一步研究。分子对接和相互作用分析显示了对金黄色葡萄球菌脂肪酶的强结合亲和力,二氢叶酸还原酶,和其他MDR金黄色葡萄球菌蛋白,包括青霉素结合蛋白2a,MepR,D-Ala:D-Ala连接酶,和RPPTetM,通过亲水和疏水相互作用。GMG-ITC还显示出对环氧合酶2和FAD依赖性NAD(P)H氧化酶的强结合亲和力,提示它是一种潜在的抗炎和抗氧化候选物,可以消除与金黄色葡萄球菌感染相关的炎症和氧化应激.MD模拟验证了通过分子对接确定的GMG-ITC分子相互作用的稳定性。计算机药代动力学分析突出了其作为候选药物的效力,表现出强烈的吸收,分布,和排泄特性与低毒性相结合。它作为活性蛋白酶和酶抑制剂,对GPCR配体具有中等活性,离子通道,核受体配体,和激酶。富集分析进一步阐明了其参与重要的生物,分子,和细胞功能在癌症等疾病中具有潜在的治疗应用,乙型肝炎,和流感。结果表明,GMG-ITC是一种有效的抗菌剂,可以治疗MDR金黄色葡萄球菌相关感染。
    Multidrug-resistant (MDR) Staphylococcus aureus infections significantly threaten global health. With rising resistance to current antibiotics and limited solutions, the urgent discovery of new, effective, and affordable antibacterials with low toxicity is imperative to combat diverse MDR S. aureus strains. Hence, in this study, we introduce an in silico phytochemical-based approach for discovering novel antibacterial agents, underscoring the potential of computational approaches in therapeutic discovery. Glucomoringin Isothiocyanate (GMG-ITC) from Moringa oleifera Lam. is one of the phytochemical compounds with several biological activities, including antimicrobial, anti-inflammatory, and antioxidant activities, and is also effective against S. aureus. This study focuses on screening GMG-ITC as a potential drug candidate to combat MDR S. aureus infections through a molecular docking approach. Moreover, interaction amino acid analysis, in silico pharmacokinetics, compound target prediction, pathway enrichment analysis and molecular dynamics (MD) simulations were conducted for further investigation. Molecular docking and interaction analysis showed strong binding affinity towards S. aureus lipase, dihydrofolate reductase, and other MDR S. aureus proteins, including penicillin-binding protein 2a, MepR, D-Ala:D-Ala ligase, and RPP TetM, through hydrophilic and hydrophobic interactions. GMG-ITC also showed a strong binding affinity to cyclooxygenase-2 and FAD-dependent NAD(P)H oxidase, suggesting that it is a potential anti-inflammatory and antioxidant candidate that may eliminate inflammation and oxidative stress associated with S. aureus infections. MD simulations validated the stability of the GMG-ITC molecular interactions determined by molecular docking. In silico pharmacokinetic analysis highlights its potency as a drug candidate, showing strong absorption, distribution, and excretion properties in combination with low toxicity. It acts as an active protease and enzyme inhibitor with moderate activity against GPCR ligands, ion channels, nuclear receptor ligands, and kinases. Enrichment analysis further elucidated its involvement in important biological, molecular, and cellular functions with potential therapeutic applications in diseases like cancer, hepatitis B, and influenza. Results suggest that GMG-ITC is an effective antibacterial agent that could treat MDR S. aureus-associated infections.
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  • 文章类型: Journal Article
    越来越多的证据表明,摄入反式脂肪酸(TFA)会增加许多疾病的风险,比如心血管疾病。最近,我们小组发现,某些天然硫化合物(异硫氰酸烯丙酯[AITC]和二烯丙基二硫化物[DADS])在热处理过程中促进脂肪酸酯的顺式至反式异构化。然而,关于脂肪酸异构化的信息很少。在这项研究中,我们研究了在AITC和DADS存在下,氧气和α-生育酚(抗氧化剂)对油酸(18:1)甲酯(OA-ME)异构化的影响。此外,评估了同时使用AITC和DADS的效果。我们的结果表明,氧气增强了AITC诱导的反式异构化,并且发现DADS在加热期间促进反式异构化但抑制AITC诱导的反式异构化。α-生育酚抑制了AITC和DADS诱导的反式异构化。这些结果表明,可以通过设计烹饪方法和一起使用的食品成分来控制由硫化合物诱导的脂肪酸的反式异构化。
    Growing evidence indicates that the intake of trans fatty acids (TFAs) increases the risk of numerous diseases, such as cardiovascular diseases. Recently, our group found that certain natural sulfur compounds (allyl isothiocyanate [AITC] and diallyl disulfide [DADS]) promote cis to trans isomerization of fatty acid esters during heat treatment. However, little information is available on the fatty acid isomerization with them. In this study, we investigated the effects of oxygen and α-tocopherol (antioxidant) on isomerization of oleic acid (18:1) methyl ester (OA-ME) in the presence of AITC and DADS. Furthermore, the effect of the simultaneous use of AITC and DADS was evaluated. Our results indicate that oxygen enhances the AITC-induced trans isomerization, and DADS was found to promote trans isomerization but inhibit AITC-induced trans isomerization during heating. Both AITC- and DADS-induced trans isomerization were inhibited by α-tocopherol. These results indicate that the trans isomerization of fatty acids induced by sulfur compounds can be controlled by devising a cooking process and the food ingredients used together.
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  • 文章类型: Journal Article
    三阴性乳腺癌(TNBC)表现出侵袭性表型,由于缺乏药物靶标,治疗选择有限。关于天然化合物改变癌症治疗功效的潜力进行了广泛研究,其中萝卜硫烷-天然来源的异硫氰酸酯,被证明是一种恒星化合物,这可能会发挥不同的作用:细胞保护或细胞毒性,这取决于其浓度。因此,这项研究的目的是确定其低,饮食浓度对体内和体外2D和3D模型中TNBC细胞增殖和迁移的影响。体内实验结果显示,萝卜硫烷治疗后肿瘤生长抑制高达31%,与癌细胞增殖潜能降低有关。坏死面积减少,改变了免疫细胞类型的浸润,与未治疗组相比,肿瘤的恶性程度较低。此外,研究显示萝卜硫素减少了肺转移瘤的数量。体外研究证实,SFN抑制细胞迁移,但仅在来自3D球体的细胞中,不是来自2D体外培养。结果表明萝卜硫烷在从TNBC原发肿瘤及其环境中释放的细胞的情况下具有特定的作用。
    Triple-negative breast cancer (TNBC) represents aggressive phenotype with limited treatment options due to the lack of drug targets. Natural compounds are extensively studied regarding their potential to alter the efficacy of cancer treatment Among them sulforaphane - an isothiocyanate of natural origin, was shown to be a hormetic compound, that may exert divergent effects: cytoprotective or cytotoxic depending on its concentrations. Thus, the aim of this study was to determine the effect of its low, dietary concentrations on the proliferation and migration of the TNBC cells in the in vivo and in vitro 2D and 3D model. Results of the in vivo experiment showed up to 31% tumor growth inhibition after sulforaphane treatment associated with lowered proliferating potential of cancer cells, reduced areas of necrosis, and changed immune cell type infiltration, showing less malignant type of tumor in contrast to the non-treated group. Also, the study revealed that sulforaphane decreased the number of lung metastases. The in vitro study confirmed that SFN inhibited cell migration, but only in cells derived from 3D spheroids, not from 2D in vitro cultures. The results show a specific role of sulforaphane in the case of cells released from the TNBC primary tumor and its environment.
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  • 文章类型: Journal Article
    在本研究中,一个单核Cu(II)[CuL(SCN)](1)和一个单核Co(II)[CoLN3](2)配合物,与通过2-吡啶甲基胺和水杨醛缩合形成的席夫碱配体(HL),已成功开发和结构表征。通过一个去质子化的配体和一个辅助配体SCN-(1)或N3-(2)与金属中心的配位,实现了两种配合物的方形平面几何形状。使用几种生物物理和光谱技术研究了两种复合物与脱氧核糖核酸(DNA)和人血清白蛋白(HSA)的结合亲和力。大分子-复合物结合常数的高值和其他结果证实了两种复合物对与DNA和HSA结合的有效性。热力学参数的确定值支持两种复合物与HSA的自发相互作用,而荧光置换和DNA解链研究建立了复合物1和2与DNA的沟结合相互作用。分子建模研究验证了实验结果。两种复合物都进行了MTT测试,建立了复合物1的抗癌特性,对正常细胞具有较低的风险,复合物对HeLa癌细胞和HEK正常细胞的IC50值证实。最后,核染色分析表明,复合物已导致凋亡细胞死亡。
    In the present study, one mononuclear Cu(II) [CuL(SCN)] (1) and one mononuclear Co(II) [CoLN3] (2) complexes, with a Schiff base ligand (HL) formed by condensation of 2-picolylamine and salicylaldehyde, have been successfully developed and structurally characterized. The square planer geometry of both complexes is fulfilled by the coordination of one deprotonated ligand and one ancillary ligand SCN-(1) or N3-(2) to the metal centre. Binding affinities of both complexes with deoxyribonucleic acid (DNA) and human serum albumin (HSA) are investigated using several biophysical and spectroscopic techniques. High values of the macromolecule-complex binding constants and other results confirm the effectiveness of both complexes towards binding with DNA and HSA. The determined values of the thermodynamic parameters support spontaneous interactions of both complexes with HSA, while fluorescence displacement and DNA melting studies establish groove-binding interactions with DNA for both complexes 1 and 2. The molecular modelling study validates the experimental findings. Both complexes are subjected to an MTT test establishing the anticancer property of complex 1 with lower risk to normal cells, confirmed by the IC50 values of the complex for HeLa cancer cells and HEK normal cells. Finally, a nuclear staining analysis reveals that the complexes have caused apoptotic cell death.
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