Abstract
Vesicles comprising dimethyl aminopropyl octadecanamide (DMAPODA), stearic acid (SA), and carboxyhexadecyl disulfide (CHDDS) were prepared as reduction-responsive carriers. Vesicular particles were found on TEM micrographs and the diameter fell within 100–400 nm. The hydrodynamic mean diameter increased with increasing the content of CHDDS. The zeta potential was lowered by the incorporation of CHDDS into the vesicular membrane. Vesicle whose DMAPODA/SA/ CHDDS molar ratio was 1/1/5 exhibited one endothermic peak around 50.9°C, indicating that the vesicular membrane was homogeneous in the composition. Strong signals were found in 500–540 cm-1 in the Raman spectrum of vesicles, suggesting that the disulfide lipid (i.e. CHDDS) was incorporated into the vesicular membranes. Vesicles containing CHDDS released rhodamine B in dithiothreitol (DTT, a reducing agent) concentration-dependent manner. The DTTsensitivity of the vesicles in terms of release was higher as the CHDDS content was higher.
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This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF- 2018R1D1A1B07043439) and Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2018R1A6A1A03025582).
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Kim, J.A., Kim, JC. Vesicles Comprising Dimethylaminopropyl Octadecanamide, Stearic Acid, and Carboxyhexadecyl Disulfide and Their Release Property under Reducing Condition. Biotechnol Bioproc E 25, 690–698 (2020). https://doi.org/10.1007/s12257-019-0456-0
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DOI: https://doi.org/10.1007/s12257-019-0456-0