Deller, Robert C.; Diamanti, Paraskevi; Morrison, Gabriella; Reilly, James; Ede, Benjamin C.; Richardson, Robert; Le Vay, Kristian; Collins, Andrew M.; Blair, Allison; Perriman, Adam W.
Functionalized Triblock Copolymer Vectors for the Treatment of Acute Lymphoblastic Leukemia
The chemotherapeutic Parthenolide is an exciting new candidate for the treatment of acute lymphoblastic leukemia, but like many other small-molecule drugs, it has low aqueous solubility. As a consequence, Parthenolide can only be administered clinically in the presence of harmful cosolvents. Accordingly, we describe the synthesis, characterization, and testing of…
Twisted nanoribbons from a RGD-bearing cholic acid derivative
Travaglini, Leana; Giordano, Cesare; D’Annibale, Andrea; Gubitosi, Marta; di Gregorio, Maria Chiara; Schillén, Karin; Stefanucci, Azzurra; Mollica, Adriano; Pavel, Nicolae Viorel; Galantini, Luciano
In light of the biomedical interest for self-assembling amphiphiles bearing the tripeptide Arg-Gly-Gly (RGD), a cholic acid derivative was synthesized by introducing an aromatic moiety on the steroidal skeleton and the RGD sequence on the carboxylic function of its chain 17–24, thus forming a peptide amphiphile with the unconventional rigid…
Freeze-dried and re-hydrated liquid crystalline nanoparticles stabilized with disaccharides for drug-delivery of the plectasin derivative AP114 antimicrobial peptide
Boge, Lukas; Västberg, Amanda; Umerska, Anita; Bysell, Helena; Eriksson, Jonny; Edwards, Katarina; Millqvist-Fureby, Anna; Andersson, Martin
Liquid crystalline nanoparticles (LCNPs), e.g. cubosomes and hexosomes, are receiving more and more attraction as drug delivery vehicles. Dry powder formulation that forms LCNPs upon hydration can be advantageous to make new routes of administration accessible. In this work, we investigate use of three disaccharides (lactose, trehalose and sucrose) as…
Seeded Growth Synthesis of Gold Nanotriangles: Size Control, SAXS Analysis, and SERS Performance
Kuttner, Christian; Mayer, Martin; Dulle, Martin; Moscoso, Ana; López-Romero, Juan Manuel; Förster, Stephan; Fery, Andreas; Pérez-Juste, Jorge; Contreras-Cáceres, Rafael
We studied the controlled growth of triangular prismatic Au nanoparticles with different beveled sides for surface-enhanced Raman spectroscopy (SERS) applications. First, in a seedless synthesis using 3-butenoic acid (3BA) and benzyldimethylammonium chloride (BDAC), gold nanotriangles (AuNTs) were synthesized in a mixture with gold nanooctahedra (AuNOCs) and separated by depletion-induced…
Reverse micelles as nanocarriers of nisin against foodborne pathogens
Chatzidaki, Maria D.; Papadimitriou, Konstantinos; Alexandraki, Voula; Balkiza, Fani; Georgalaki, Marina; Papadimitriou, Vassiliki; Tsakalidou, Effie; Xenakis, Aristotelis
Reverse micelles (RMs) as nanocarriers of nisin were optimized for the highest water and bacteriocin content. RMs formulated with either refined olive oil or sunflower oil, distilled monoglycerides, ethanol, and water were effectively designed. Structural characterization of the RMs was assessed using Electron Paramagnetic Resonance Spectroscopy and Small Angle X-ray…
Langmuir – Blodgett monolayers of SBA-15 particles with different morphologies
Znamenskaya Falk, Yana; Schmitt, Julien; Alfredsson, Viveka
This study presents an optimized protocol for the deposition of mesoporous SBA-15 particles with platelet-like and rod-like morphologies on different types of supporting substrates using Langmuir-Blodgett methodology, resulting in the formation of monolayers with porosity orientation controlled by the type, i. e. the morphology, of particles used over large areas.…
Squaramide-Based Supramolecular Materials for Three-Dimensional Cell Culture of Human Induced Pluripotent Stem Cells and Their Derivatives
Tong, Ciqing; Liu, Tingxian; Saez Talens, Victorio; Noteborn, Willem E. M.; Sharp, Thomas H.; Hendrix, Marco M. R. M.; Voets, Ilja K.; Mummery, Christine L.; Orlova, Valeria V.; Kieltyka, Roxanne E.
Synthetic hydrogel materials can recapitulate the natural cell microenvironment; however, it is equally necessary that the gels maintain cell viability and phenotype while permitting reisolation without stress, especially for use in the stem cell field. Here, we describe a family of synthetically accessible, squaramide-based tripodal supramolecular monomers consisting of a…
On the properties of poly(isoprene-b-ferrocenylmethyl methacrylate) block copolymers
Chernyy, Sergey; Kirkensgaard, Jacob Judas Kain; Bakke, Anders; Mortensen, Kell; Almdal, Kristoffer
By combining poly(1,4-isoprene) (PI) with poly(ferrocenylmethyl methacrylate) (PFMMA) in a diblock copolymer structure by means of anionic polymerization we obtained narrowly dispersed PI-b-PFMMA copolymers with molecular weight ranging from 13000 to 62000 g/mol. The products were stable up to 228 °C, according to thermal gravimetry, which allowed us to further investigate their…
Flocculated Laponite-PEG/PEO Dispersions with Multivalent Salt: A SAXS, Cryo-TEM, and Computer Simulation Study
Thuresson, Axel; Segad, M.; Plivelic, Tomás S.; Skepö, Marie
The aim of this study is to scrutinize the mechanism behind aggregation, i.e., tactoid formation of nanostructures with the shape of a platelet. For that purpose, the clay minerals Laponite and montmorillonite have been used as model systems. More specifically, we are interested in the role of: the platelet size,…
Electrostatic Effect on the Solution Structure and Dynamics of PEDOT:PSS
Leaf, Michael A.; Muthukumar, Murugappan
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) is a material consisting of two oppositely charged polymers and is available as aqueous dispersions. Various annealing and doping methods dramatically enhance PEDOT:PSS conductivity, rendering it competitive with inorganic conductors like indium tin oxide. Yet a comprehensive understanding of PEDOT:PSS conductivity…