Self-assembly of a cholesteryl-modified nucleoside into tubular structures from giant unilamellar vesicles

Self-assembly of a cholesteryl-modified nucleoside into tubular structures from giant unilamellar vesicles
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胆固醇修饰核苷从巨型单层囊泡自组装成管状结构

DOI:
10.1039/c4ra11289j
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发表时间:
2015
期刊:
影响因子:
3.9
通讯作者:
Arbuzova
Arbuzova
中科院分区:
化学3区
文献类型:
--
作者:
Losensky;Chiantia;Holland;Petran;Liebscher;Arbuzova

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我们最近报道了在胆固醇修饰的氨基尿苷和磷脂酰胆碱在水溶液中的二元体系中在从70 °C冷却至室温时形成微米和纳米厚的小管(Pescador等人,,2010,46,5358)。为了更好地理解管状自组装的第一步和磷脂的作用,我们现在研究了在室温下结合缀合物后磷脂酰胆碱巨单层囊泡的形态变化。我们观察到的针状结构的形成,组织在几个小时到几天内,根据共轭物的摩尔分数和制备技术的roxylate或束。透射电子显微镜显示针状结构为100-200 nm厚的小管,其内腔直径为15-40 nm。该自组装管在室温下发生,这对于进一步开发生物医学应用具有重要意义。
We recently reported the formation of micro- and nanometer thick tubules in a binary system of cholesteryl-modified aminouridine and a phosphatidylcholine in aqueous solution upon cooling from 70 °C to room temperature (Pescador et al., Chem. Commun, 2010, 46, 5358). To better understand the first steps of the tubular self-assembly and the role of the phospholipid, we investigated now morphological changes of phosphatidylcholine giant unilamellar vesicles upon incorporation of the conjugate at room temperature. We observed formation of needle-like structures organized in rosettes or bundles within hours to days depending on the mole fraction of the conjugate and preparation technique. Transmission electron microscopy revealed that the needle-like structures were 100–200 nm thick tubules with the inner lumen diameters of 15–40 nm. The tube self-assembly occurred at room temperature, which is important for further development of biomedical applications.
DOI: 10.1021/la025649r
发表时间: 2002-06-11
期刊: LANGMUIR
影响因子: 3.9
作者:
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通讯作者: Swift, JA
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