Coassembly of Oppositely Charged Short Peptides into Well-Defined Supramolecular Hydrogels
作者:Xiao-Ding Xu、Chang-Sheng Chen、Bo Lu、Si-Xue Cheng、Xian-Zheng Zhang、Ren-Xi Zhuo
DOI:10.1021/jp9102417
日期:2010.2.25
each other through an antiparallel fashion in the formed nanofibers. Due to the weak flexibility of peptide chains and steric hindrance of rigid fluorenyl rings during the initial process of the coassembly of the oppositely charged peptides, a relatively slow self-assembly was presented, and a higher concentration of the oppositely charged peptides was necessary for this supramolecular hydrogel formation
两种类型的带相反电荷的短肽,由疏水性N组成通过标准固相肽(SPPS)技术设计和制备了-芴基-9-甲氧羰基(FMOC)尾部和肽骨架。当在中性pH值下将这两种带相反电荷的肽在水中混合时,可通过静电吸引触发的共组装形成具有肌瘤形态的超分子水凝胶。光谱技术表明,肽主链的氢键相互作用导致形成反平行的β-折叠状超结构,从而使与肽主链连接的芴基环以反平行的方式彼此π堆叠在形成的纳米纤维中。 。由于在带相反电荷的肽共组装的初始过程中,肽链的柔韧性较弱以及刚性芴基的位阻,提出了相对缓慢的自组装,并且对于这种超分子水凝胶的形成,需要更高浓度的带相反电荷的肽。这项研究中证明的策略可以开发为一种方便的方法,用于将不同类型的短肽共组装为具有多种功能的超分子水凝胶,用于生物医学应用。