PMID- 31672546 OWN - NLM STAT- MEDLINE DCOM- 20200424 LR - 20200424 IS - 1879-2642 (Electronic) IS - 0005-2736 (Linking) VI - 1862 IP - 2 DP - 2020 Feb 1 TI - The influence of charge and lipophilicity of daunorubicin and idarubicin on their penetration of model biological membranes - Langmuir monolayer and electrochemical studies. PG - 183104 LID - S0005-2736(19)30250-0 [pii] LID - 10.1016/j.bbamem.2019.183104 [doi] AB - The interactions of two selected anthracyclines, daunorubicin (DNR) and idarubicin (IDA), with phospholipid monolayers used as simple models of cell membranes, were investigated. The results of Langmuir experiments together with Brewster angle microscopy showed that both drugs strongly affect cancer cell membranes composed of 1,2-dimyristoyl-sn-glycero-3-phospho-l-serine (DMPS). Electrostatic interactions allow positively charged DNR and IDA to interact with negatively charged DMPS polar heads but increased lipophilicity of IDA allows it to penetrate the layer more effectively than DNR and prevents from its expulsion at higher surface pressures. The analysis of the thermodynamical functions of hysteresis proves the presence of the enthalpically favorable interactions within the monolayer during its compression in the presence of idarubicin, which may form aggregates with DMPS molecules. The influence of the drugs was significantly less pronounced for a healthy cell model composed of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) due to the lack of strong electrostatic attractions. The interactions of drugs with pre-compressed phospholipid monolayers were also examined. The physical state of the monolayer and its packing determined only to some extent the penetration of anthracyclines. Since drug molecules first approach the polar region of the monolayer, the increase in surface pressure in time was more pronounced for negatively charged DMPS monolayers than for zwitterionic DMPC. Additionally, idarubicin was able to penetrate the precompressed DMPS monolayers more effectively than daunorubicin due to increased lipophilicity. This property of the drug was also responsible for IDA better penetration of hydrocarbon chains of supported DMPS monolayers compared to DNR, as shown by electrochemical studies. CI - Copyright (c) 2019 The Author. Published by Elsevier B.V. All rights reserved. FAU - Matyszewska, Dorota AU - Matyszewska D AD - Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, ul. Zwirki i Wigury 101, 02089 Warsaw, Poland. Electronic address: dorota.matyszewska@chem.uw.edu.pl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191028 PL - Netherlands TA - Biochim Biophys Acta Biomembr JT - Biochimica et biophysica acta. Biomembranes JID - 101731713 RN - 0 (Antineoplastic Agents) RN - 0 (Unilamellar Liposomes) RN - U86ZGC74V5 (Dimyristoylphosphatidylcholine) RN - ZRP63D75JW (Idarubicin) RN - ZS7284E0ZP (Daunorubicin) SB - IM MH - Antineoplastic Agents/chemistry/*pharmacology MH - Cell Membrane/chemistry/*drug effects MH - Daunorubicin/chemistry/*pharmacology MH - Dimyristoylphosphatidylcholine/chemistry MH - Hydrophobic and Hydrophilic Interactions MH - Idarubicin/chemistry/*pharmacology MH - Static Electricity MH - Unilamellar Liposomes/chemistry OTO - NOTNLM OT - Brewster angle microscopy (BAM) OT - Cyclic voltammetry OT - Daunorubicin (DNR) OT - Idarubicin (IDA) OT - Langmuir monolayer OT - Model lipid membrane EDAT- 2019/11/02 06:00 MHDA- 2020/04/25 06:00 CRDT- 2019/11/02 06:00 PHST- 2019/08/09 00:00 [received] PHST- 2019/09/23 00:00 [revised] PHST- 2019/10/15 00:00 [accepted] PHST- 2019/11/02 06:00 [pubmed] PHST- 2020/04/25 06:00 [medline] PHST- 2019/11/02 06:00 [entrez] AID - S0005-2736(19)30250-0 [pii] AID - 10.1016/j.bbamem.2019.183104 [doi] PST - ppublish SO - Biochim Biophys Acta Biomembr. 2020 Feb 1;1862(2):183104. doi: 10.1016/j.bbamem.2019.183104. Epub 2019 Oct 28.