Liposomes: Bio-inspired nano-containers for physically triggered targeted drug delivery

Sofiya Matviykiv, Marzia Buscema, Tamás Mészáros, Gabriela Gerganova, Thomas Pfohl, Andreas Zumbühl, János Szebeni, Bert Müller

Research output: Conference contribution

1 Citation (Scopus)

Abstract

For natural scientists and engineers, learning from nature has tradition and is often driven by bio-inspired processes and materials. For example, engineers have designed multifunctional materials with hierarchical structures. Lipid bilayers, the principal components of cell membranes, can form vesicles, termed liposomes. Such liposomes are usually recognized as foreign by the immune system of a patient, which makes it challenging to use liposomes as containers for targeted drug delivery. There are, however, promising non-spherical, mechano-sensitive, artificial liposomes about 100 nm in diameter, which were recently identified. These bio-inspired containers offer a wide range of applications. In particular, the targeted release at critically stenosed arteries formed as a result of atherosclerosis significantly reduces the undesired side effects such as a drop of blood pressure. It is well known that FDA-approved liposomal drugs, currently on the market, often induce adverse immune responses. Therefore, to exclude the hypersensitivity of the recently discovered mechano-sensitive liposomes, we have performed in vitro complement activation experiments and related animal studies with pigs. Recently, it has been shown that the drug-free Pad-PC-Pad liposomes surprisingly lack any complement activation. In this study, we demonstrate that nitroglycerin-loaded liposomes with relevant human therapeutic dosage exhibit low complement activation compared to the FDA-approved phospholipid drugs, including Abelcet. Furthermore, the liposomal suspensions applied are stable for a period of more than two months. Consequently, the non-spherical liposomes of nanometer size we have developed are promising containers for physically triggered, targeted drug delivery.

Original languageEnglish
Title of host publicationBioinspiration, Biomimetics, and Bioreplication 2017
EditorsAkhlesh Lakhtakia, Mato Knez, Raul J. Martin-Palma
PublisherSPIE
ISBN (Electronic)9781510608092
DOIs
Publication statusPublished - jan. 1 2017
EventBioinspiration, Biomimetics, and Bioreplication 2017 - Portland, United States
Duration: márc. 26 2017márc. 27 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10162
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherBioinspiration, Biomimetics, and Bioreplication 2017
CountryUnited States
CityPortland
Period3/26/173/27/17

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Matviykiv, S., Buscema, M., Mészáros, T., Gerganova, G., Pfohl, T., Zumbühl, A., Szebeni, J., & Müller, B. (2017). Liposomes: Bio-inspired nano-containers for physically triggered targeted drug delivery. In A. Lakhtakia, M. Knez, & R. J. Martin-Palma (Eds.), Bioinspiration, Biomimetics, and Bioreplication 2017 [101620A] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10162). SPIE. https://doi.org/10.1117/12.2258378