Université de Fribourg

Immunological response to nitroglycerin-loaded shear-responsive liposomes in vitro and in vivo

Buscema, Marzia ; Matviykiv, Sofiya ; Mészáros, Tamás ; Gerganova, Gabriela ; Weinberger, Andreas ; Mettal, Ute ; Mueller, Dennis ; Neuhaus, Frederik ; Stalder, Etienne ; Ishikawa, Takashi ; Urbanics, Rudolf ; Saxer, Till ; Pfohl, Thomas ; Szebeni, János ; Zumbuehl, Andreas ; Müller, Bert

In: Journal of Controlled Release, 2017, vol. 264, no. Supplement C, p. 14–23

Liposomes formulated from the 1,3-diamidophospholipid Pad-PC-Pad are shear- responsive and thus promising nano-containers to specifically release a vasodilator at stenotic arteries. The recommended preclinical safety tests for therapeutic liposomes of nanometer size include the in vitro assessment of complement activation and the evaluation of the associated risk of complement...

Université de Fribourg

Surprising lack of liposome-induced complement activation by artificial 1,3-diamidophospholipids in vitro

Bugna, Simon ; Buscema, Marzia ; Matviykiv, Sofiya ; Urbanics, Rudolf ; Weinberger, Andreas ; Meszaros, Tamas ; Szebeni, Janos ; Zumbuehl, Andreas ; Saxer, Till ; Müller, Bert

In: Nanomedicine: Nanotechnology, Biology and Medicine, 2016, vol. 12, no. 3, p. 845–849

Cardio-vascular diseases are the main cause of death, emphasizing the need to improve patient treatment and survival. One therapeutic approach is a liposome-based drug carrier system specifically targeting constricted arteries. The recently discovered mechano-sensitive liposomes use hemodynamic shear-stress differences between healthy and constricted blood vessels as trigger for drug release....

Université de Fribourg

Bilayer Properties of 1,3-Diamidophospholipids

Weinberger, Andreas ; Tanasescu, Radu ; Stefaniu, Cristina ; Fedotenko, lllya A. ; Favarger, France ; Ishikawa, Takashi ; Brezesinski, Gerald ; Marques, Carlos M. ; Zumbuehl, Andreas

In: Langmuir, 2015, vol. 31, no. 6, p. 1879–1884

A series of 1,3-diamido phosphocholines was synthesized, and their potential to form stable bilayers was investigated. Large and giant unilamellar vesicles produced from these new lipids form a wide variety of faceted liposomes. Factors such as cooling rates and the careful choice of the liposome preparation method influence the formation of facets. Interdigitation was hypothesized as a main...