2017年6月
Tuning the Viscoelasticity of Peptide Vesicles by Adjusting Hydrophobic Helical Blocks Comprising Amphiphilic Polypeptides
LANGMUIR
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- 巻
- 33
- 号
- 22
- 開始ページ
- 5423
- 終了ページ
- 5429
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/acs.langmuir.7b00289
- 出版者・発行元
- AMER CHEMICAL SOC
Amphiphilic block polypeptides of
[GRAPHIC]
poly(sarcosine)-b-(L-Val-Aib)(6) and poly(sarcosine)-b-(L-Leu-Aib)(6) and their steteoisomers were self-assembled in water. Three kinds of binary systems of poly(sarcosine)-b-(L-Leu-Aib)(6) with poly(sarcosine)-b-poly(D-Leu-Aib)(6), poly(sarcosine)-b-poly(L-Val-Aib)(6), or poly(sarcosine)-b-(D-Val-Aib)(6) generated vesicles of 200 nm diameter. The viscoelasticity of the vesicle membranes was evaluated by the nanoindentation method using AFM in water. The elasticity of the poly(sarcosine)-b-(L-Leu-Aib)(6)/poly(sarcosine)-b-poly(D-Leu-Aib)(6) vesicle was 11 fold higher than that of the egg yolk liposome but decreased in coinbinations,of the Leu- and Val-based amphiphilic polypeptides. The membrane elasticity is found to be adjustable by a suitable combination of helical brocks in terms of stereocomplex formation and the interdigitation of side chains among helices in the molecular assemblies.
[GRAPHIC]
poly(sarcosine)-b-(L-Val-Aib)(6) and poly(sarcosine)-b-(L-Leu-Aib)(6) and their steteoisomers were self-assembled in water. Three kinds of binary systems of poly(sarcosine)-b-(L-Leu-Aib)(6) with poly(sarcosine)-b-poly(D-Leu-Aib)(6), poly(sarcosine)-b-poly(L-Val-Aib)(6), or poly(sarcosine)-b-(D-Val-Aib)(6) generated vesicles of 200 nm diameter. The viscoelasticity of the vesicle membranes was evaluated by the nanoindentation method using AFM in water. The elasticity of the poly(sarcosine)-b-(L-Leu-Aib)(6)/poly(sarcosine)-b-poly(D-Leu-Aib)(6) vesicle was 11 fold higher than that of the egg yolk liposome but decreased in coinbinations,of the Leu- and Val-based amphiphilic polypeptides. The membrane elasticity is found to be adjustable by a suitable combination of helical brocks in terms of stereocomplex formation and the interdigitation of side chains among helices in the molecular assemblies.
- リンク情報
- ID情報
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- DOI : 10.1021/acs.langmuir.7b00289
- ISSN : 0743-7463
- Web of Science ID : WOS:000403035200011