Glucose-modified carbosilane dendrimers: Interaction with model membranes and human serum albumin.

0541353 - ÚCHP 2022 RIV GB eng J - Journal Article
Wróbel, D. - Müllerová, Monika - Strašák, Tomáš - Růžička, K. - Fulem, M. - Kubíková, R. - Bryszewska, M. - Klajnert-Maculewicz, B. - Malý, J.
Glucose-modified carbosilane dendrimers: Interaction with model membranes and human serum albumin.
International Journal of Pharmaceutics. Roč. 579, APR 15 (2020), č. článku 119138. ISSN 0378-5173. E-ISSN 1873-3476
R&D Projects: GA MŠMT(CZ) LTC19049
EU Projects: European Commission(XE) CA17140
Institutional support: RVO:67985858
Keywords : glucose-modified carbosilane dendrimers * liposomes * model lipid membranes
OECD category: Organic chemistry
Impact factor: 5.875, year: 2020
Method of publishing: Open access
https://www.sciencedirect.com/science/article/pii/S0378517320301228?via%3Dihub

Glycodendrimers are a novel group of dendrimers (DDMs) characterized by surface modifications with various types of glycosides. It has been shown previously that such modifications significantly decrease the cytotoxicity of DDMs. Here, we present an investigation of glucose-modified carbosilane DDMs (first-third-generation, DDM(1-3)Glu) interactions with two models of biological structures: lipid membranes (liposomes) and serum protein (human serum albumin, HSA). The changes in lipid membrane fluidity with increasing concentration of DDMs was monitored by spectrofluorimetry and calorimetry methods. The influence of glycodendrimers on serum protein was investigated by monitoring changes in protein fluorescence intensity (fluorescence quenching) and as protein secondary structure alterations by circular dichroism spectrometry. Generally, all generations of DDMGlu induced a decrease of membrane fluidity and interacted weakly with HSA. Interestingly, in contrast to other dendritic type polymers, the extent of the DDM interaction with both biological models was not related to DDM generation. The most significant interaction with protein was shown in the case of DDM(2)Glu, whereas DDM(1)Glu induced the highest number of changes in membrane fluidity. In conclusion, our results suggest that the flexibility of a DDM molecule, as well as its typical structure (hydrophobic interior and hydrophilic surface) along with the formation of larger aggregates of DDM(2-3)Glu, significantly affect the type and extent of interaction with biological structures.
Permanent Link: http://hdl.handle.net/11104/0318915