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Synthesis and characterization of an ELP-conjugated liposome with thermo-sensitivity for controlled release of a drug

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Abstract

Liposome, one of various drug carriers, has been extensively studied as an inert carrier for the delivery of protein, DNA, and biologically active agents into cells. Recently, much effort has been directed to the development of stimuli-sensitive liposomes that are able to respond to certain internal or external stimuli, such as, pH, electricity, temperature, magnet, or light. Among them, to obtain liposomes which release the contents in response to ambient temperature, liposomes have been modified with chemically synthetic polymers having various lower critical solution temperatures (LCST). In this study, instead of chemically synthetic polymers, a biologically produced elastin-like polypeptide (ELP), which was composed of oligomeric repeats of the pentapeptide sequence (Val-Pro-Gly-Val- Gly), was used for endowing the liposome with thermosensitivity. A model drug was encapsulated in the ELPconjugated liposomes and the release behavior of the drug caused by the liposome disruption due to the aggregation of ELPs was investigated. In addition, conjugation of ELP to liposome was identified with Fourier Transformed Infrared (FT-IR) and Scanning Electron Microscope (SEM) analyses.

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Authors and Affiliations

  1. Department of Chemical Engineering, Hongik University, Seoul, 121-791, Korea

    Heelak Choi, Hun-Su Chu, Minsub Chung, Bumsang Kim & Jong-In Won

  2. Material Research Center, Samsung Electronics Co., Suwon, Korea

    Hun-Su Chu

Authors
  1. Heelak Choi
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  2. Hun-Su Chu
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  3. Minsub Chung
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  4. Bumsang Kim
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  5. Jong-In Won
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Correspondence to Jong-In Won.

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Choi, H., Chu, HS., Chung, M. et al. Synthesis and characterization of an ELP-conjugated liposome with thermo-sensitivity for controlled release of a drug. Biotechnol Bioproc E 21, 620–626 (2016). https://doi.org/10.1007/s12257-016-0391-2

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  • DOI: https://doi.org/10.1007/s12257-016-0391-2

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