New self-assembled supramolecular hydrogels based on dehydropeptides.

New self-assembled supramolecular hydrogels based on dehydropeptides.
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基于脱氢肽的新型自组装超分子水凝胶。

DOI:
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发表时间:
2015
期刊:
Journal of materials chemistry. B
影响因子:
--
通讯作者:
P. Ferreira
P. Ferreira
中科院分区:
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文献类型:
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作者:
Helena Vilaça;G. Pereira;Tarsila G. Castro;B. Hermenegildo;J. Shi;Tiago Q. Faria;N. Micaêlo;Rui M. M. Brito;B. Xu;E. M. Castanheira;J. Martins;P. Ferreira

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超分子水凝胶依赖于小分子,这些小分子由于几种相对较弱的分子间相互作用的协同作用而在水中自组装。基于肽的低分子量水凝胶因子由于小分子的简单性与肽的多功能性和生物相容性相结合而引起了极大的兴趣。在这项工作中,一种众所周知的非甾体抗炎药,naplucen与各种脱氢二肽N-缀合,得到抗蛋白水解的芳族肽两亲物。分子动力学模拟被用来深入了解自组装的基本分子机制,并合理化这种类型的水凝胶因子的设计。所得结果与实验观察结果非常一致。只有具有至少一个芳香族氨基酸的脱氢二肽得到水凝胶。使用透射电子显微镜(TEM),圆二色性(CD),荧光光谱和流变学测定的水凝胶的表征进行。
Supramolecular hydrogels rely on small molecules that self-assemble in water as a result of the cooperative effect of several relatively weak intermolecular interactions. Peptide-based low molecular weight hydrogelators have attracted enormous interest owing to the simplicity of small molecules combined with the versatility and biocompatibility of peptides. In this work, naproxen, a well known non-steroidal anti-inflammatory drug, was N-conjugated with various dehydrodipeptides to give aromatic peptide amphiphiles that resist proteolysis. Molecular dynamics simulations were used to obtain insight into the underlying molecular mechanism of self-assembly and to rationalize the design of this type of hydrogelators. The results obtained were in excellent agreement with the experimental observations. Only dehydrodipeptides having at least one aromatic amino acid gave hydrogels. The characterization of the hydrogels was carried out using transmission electron microscopy (TEM), circular dichroism (CD), fluorescence spectroscopy and also rheological assays.
D肽衍生物的去磷酸化形成生物功能,超分子纳米纤维/水凝胶及其在细胞内成像和肿瘤内化疗的潜在应用。
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发表时间: 2013-07-03
影响因子: 15
作者:
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影响因子: --
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影响因子: --
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DOI: 10.1021/la903694a
发表时间: 2010-04-06
期刊: LANGMUIR
影响因子: 3.9
作者:
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通讯作者: Adams, Dave J.