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Ultrasonic Film Rehydration Synthesis of Mixed Polylactide Micelles for Enzyme-Resistant Drug Delivery Nanovehicles. Polymers (Basel) 2022; 14:polym14194013. [PMID: 36235958 PMCID: PMC9571646 DOI: 10.3390/polym14194013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 09/15/2022] [Accepted: 09/20/2022] [Indexed: 11/19/2022] Open
Abstract
A facile technique for the preparation of mixed polylactide micelles from amorphous poly-D,L-lactide-block-polyethyleneglycol and crystalline amino-terminated poly-L-lactide is described. In comparison to the classical routine solvent substitution method, the ultrasonication assisted formation of polymer micelles allows shortening of the preparation time from several days to 15–20 min. The structure and morphology of mixed micelles were analyzed with the assistance of electron microscopy, dynamic and static light scattering and differential scanning calorimetery. The resulting polymer micelles have a hydrodynamic radius of about 150 nm and a narrow size distribution. The average molecular weight of micelles was found to be 2.1 × 107 and the aggregation number was calculated to be 6000. The obtained biocompatible particles were shown to possess low cytotoxicity, high colloid stability and high stability towards enzymatic hydrolysis. The possible application of mixed polylactide micelles as drug delivery vehicles was studied for the antitumor hydrophobic drug paclitaxel. The lethal concentration (LC50) of paclitaxel encapsulated in polylactide micelles was found to be 42 ± 4 µg/mL—a value equal to the LC50 of paclitaxel in the commercial drug Paclitaxel-Teva.
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Panova IG, Sudareva EA, Novoskoltseva OA, Spiridonov VV, Shtilman MI, Richtering W, Yaroslavov AA. Temperature-induced unloading of liposomes bound to microgels. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sybachin AV, Stepanova DA. Modification of Multiliposomal Nanocontainers with Albumin as a Method for Increasing Their Resistance to Enzymatic Hydrolysis. COLLOID JOURNAL 2021. [DOI: 10.1134/s1061933x21020113] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Novoskoltseva OA, Ryabaya OO, Pozdniakova NV, Yaroslavov AA. Low-toxic multi-liposomal containers for encapsulation of bioactive compounds. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Electrostatic complexes between thermosensitive cationic microgels and anionic liposomes: Formation and triggered release of encapsulated enzyme. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.07.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Spiridonov VV, Panova IG, Sybachin AV, Kuznetsov VV, Afanasov MI, Alekhina YA, Melik-Nubarov NS, Yaroslavov AA. Magneto-Sensitive Multiliposomal Containers for Immobilization and Controlled Delivery of Bioactive Substances. POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19030167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Sybachin AV, Lokova AY, Spiridonov VV, Novoskol’tseva OA, Shtykova EV, Samoshin VV, Migulin VA, Yaroslavov AA. The Effect of Cationic Polylysine on the Release of an Encapsulated Substance from pH-Sensitive Anionic Liposomes. POLYMER SCIENCE SERIES A 2019. [DOI: 10.1134/s0965545x19030179] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Pinguet CE, Ryll E, Steinschulte AA, Hoffmann JM, Brugnoni M, Sybachin A, Wöll D, Yaroslavov A, Richtering W, Plamper FA. PEO-b-PPO star-shaped polymers enhance the structural stability of electrostatically coupled liposome/polyelectrolyte complexes. PLoS One 2019; 14:e0210898. [PMID: 30653618 PMCID: PMC6336312 DOI: 10.1371/journal.pone.0210898] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/03/2019] [Indexed: 11/18/2022] Open
Abstract
We propose a strategy to counteract the salt-driven disassembly of multiliposomal complexes made by electrostatic co-assembly of anionic small unilamellar liposomes and cationic star-shaped polyelectrolytes (made of quaternized poly(dimethylaminoethyl methacrylate) (qPDMAEMA100)3.1). The combined action of (qPDMAEMA100)3.1 and a nonionic star-shaped polymer (PEO12-b-PPO45)4, which comprises diblock copolymer arms uniting a poly(ethylene oxide) PEO inner block and a poly(propylene oxide) PPO terminal block, leads to a stabilization of these complexes against disintegration in saline solutions. Hereby, the anchoring of the PPO terminal blocks to the lipid bilayer and the bridging between several liposomes are at the origin of the promoted structural stability. Two-focus fluorescence correlation spectroscopy verifies the formation of multiliposomal complexes with (PEO12-b-PPO45)4. The polyelectrolyte and the amphiphilic polymer work synergistically, as the joint action still assures some membrane integrity, which is not seen for the mere (PEO12-b-PPO45)4-liposome interaction alone.
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Affiliation(s)
- Camille E. Pinguet
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Esther Ryll
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | | | - Jón M. Hoffmann
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Monia Brugnoni
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Andrey Sybachin
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
| | - Dominik Wöll
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Alexander Yaroslavov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Moscow, Russian Federation
| | - Walter Richtering
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
| | - Felix A. Plamper
- Institute of Physical Chemistry, RWTH Aachen University, Aachen, Germany
- Institute of Physical Chemistry, TU Bergakademie Freiberg, Freiberg, Germany
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Yaroslavov AA, Sybachin AV, Sandzhieva AV, Zaborova OV. Multifunctional Containers from Anionic Liposomes and Cationic Polymers/Colloids. POLYMER SCIENCE SERIES C 2018. [DOI: 10.1134/s1811238218020224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Adjusting the size of multicompartmental containers made of anionic liposomes and polycations by introducing branching and PEO moieties. POLYMER 2017. [DOI: 10.1016/j.polymer.2017.05.041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hebbeker P, Steinschulte AA, Schneider S, Plamper FA. Balancing Segregation and Complexation in Amphiphilic Copolymers by Architecture and Confinement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4091-4106. [PMID: 28221801 DOI: 10.1021/acs.langmuir.6b04602] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Segregation is a well-known principle for micellization, as solvophobic components try to minimize interactions with other entities (such as solvent) by self-assembly. An opposite principle is based on complexation (or coacervation), leading to the coassembly/association of different components. Most cases in the literature rely on only one of these modes, though the classical micellization scheme (such as spherical micelles, wormlike micelles, and vesicles) can be enriched by a subtle balance of segregation and complexation. Because of their counteraction, micellar constructs with unprecedented structure and behavior could be obtained. In this feature, systems are highlighted, which are between both mechanisms, and we study concentration, architecture, and confinement effects. Systems with inter- and intramolecular interactions are presented, and the effects of polymer topology and monomer sequence on the resulting structures are discussed. It is shown that complexation can lead to altered micellization behavior as the complex of one hydrophobic and one hydrophilic component can have a very low surface tension toward the solvent. Then, the more soluble component is enriched at the surface of the complex and acts as a microsurfactant. Although segregation dominates for amphiphilic copolymers in solution, the effect of the complexation can be enhanced by branching (change of architecture). Another possibility to enhance the complexation is by confining copolymers in a (pseudo-) 2D environment (like the one available at liquid-liquid interfaces). These observations show how new structural features can be achieved by tuning the subtle balance between segregation and complexation/solubilization.
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Affiliation(s)
- Pascal Hebbeker
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Alexander A Steinschulte
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
| | - Felix A Plamper
- Institute of Physical Chemistry II, RWTH Aachen University , Landoltweg 2, 52056 Aachen, Germany
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Sybachin AV, Zaborova OV, Imelbaeva KM, Samoshin VV, Migulin VA, Plamper FA, Yaroslavov AA. Effects of the electrostatic complexation between anionic pH-sensitive liposomes and star-shaped polycations on the release of the liposomal content. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.07.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Complexes of star-shaped cationic polyelectrolytes with anionic liposomes: Towards multi-liposomal assemblies with controllable stability. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.04.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Efimova AA, Kostenko SN, Orlov VN, Yaroslavov AA. Effect of cholesterol on the phase state and permeability of mixed liposomes composed of anionic diphosphatidylglycerol and zwitterionic dipalmitoylphosphatidylcholine. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Yaroslavov AA, Sybachin AV, Zaborova OV, Migulin VA, Samoshin VV, Ballauff M, Kesselman E, Schmidt J, Talmon Y, Menger FM. Capacious and programmable multi-liposomal carriers. NANOSCALE 2015; 7:1635-1641. [PMID: 25554444 DOI: 10.1039/c4nr06037g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Spherical polycationic brushes (SPBs) were synthesized by grafting polycationic chains onto 100 nm polystyrene particles. These particles were exposed to unilamellar egg-lecithin (EL) liposomes with a mean diameter of 40 nm that had been rendered anionic via the presence of 10 molar% of phosphatidylserine (PS(1-)). The liposomes also contained 30 mole% of a morpholinocyclohexanol-based lipid (MOCH) that undergoes a conformational flip when the pH is decreased from 7.0 to 5.0. Mixtures of SPBs and liposomes at pH 7 gave an electrostatically-driven complex possessing, on average, about 40 liposomes for each SPB particle. It was found that the bound liposomes rapidly release much of their contents when the pH is reduced from 7.0 to 5.0 owing mostly to a MOCH conformational change that creates defects in the bilayer membrane. The drop in pH does not, however, induce a separation of the liposomes from the SPBs. Around 50-60% of the liposome contents escape before, it is reasoned, lateral and transmembrane motion of the membrane components heals the defects and prevents further release. Remarkably, the liposomes complexed with SPB release their cargo much faster than the identical but non-complexed liposomes.
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Affiliation(s)
- Alexander A Yaroslavov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russian Federation.
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Timofeeva LM, Kleshcheva NA, Shleeva MO, Filatova MP, Simonova YA, Ermakov YA, Kaprelyants AS. Nonquaternary poly(diallylammonium) polymers with different amine structure and their biocidal effect on Mycobacterium tuberculosis and Mycobacterium smegmatis. Appl Microbiol Biotechnol 2015; 99:2557-71. [DOI: 10.1007/s00253-014-6331-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 12/12/2014] [Accepted: 12/14/2014] [Indexed: 01/12/2023]
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Feng C, Pang X, He Y, Chen Y, Zhang G, Lin Z. A versatile strategy for uniform hybrid nanoparticles and nanocapsules. Polym Chem 2015. [DOI: 10.1039/c5py00765h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and versatile strategy for uniform organo-silica hybrid nanoparticles and nanocapsules was developed. The key to our strategy is the implementation of spherical star-like homopolymers and diblock copolymers with well-controlled molecular weights that form unimolecular micelles in solution as nanoreactors.
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Affiliation(s)
- Chaowei Feng
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
| | - Xinchang Pang
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
| | - Yanjie He
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
| | - Yihuang Chen
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
- Faculty of Materials Science and Engineering
| | - Guangzhao Zhang
- Faculty of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
| | - Zhiqun Lin
- School of Materials Science and Engineering
- Georgia Institute of Technology
- Atlanta
- USA
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Upadhyay RK. Drug delivery systems, CNS protection, and the blood brain barrier. BIOMED RESEARCH INTERNATIONAL 2014; 2014:869269. [PMID: 25136634 PMCID: PMC4127280 DOI: 10.1155/2014/869269] [Citation(s) in RCA: 211] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/31/2014] [Accepted: 06/05/2014] [Indexed: 12/12/2022]
Abstract
Present review highlights various drug delivery systems used for delivery of pharmaceutical agents mainly antibiotics, antineoplastic agents, neuropeptides, and other therapeutic substances through the endothelial capillaries (BBB) for CNS therapeutics. In addition, the use of ultrasound in delivery of therapeutic agents/biomolecules such as proline rich peptides, prodrugs, radiopharmaceuticals, proteins, immunoglobulins, and chimeric peptides to the target sites in deep tissue locations inside tumor sites of brain has been explained. In addition, therapeutic applications of various types of nanoparticles such as chitosan based nanomers, dendrimers, carbon nanotubes, niosomes, beta cyclodextrin carriers, cholesterol mediated cationic solid lipid nanoparticles, colloidal drug carriers, liposomes, and micelles have been discussed with their recent advancements. Emphasis has been given on the need of physiological and therapeutic optimization of existing drug delivery methods and their carriers to deliver therapeutic amount of drug into the brain for treatment of various neurological diseases and disorders. Further, strong recommendations are being made to develop nanosized drug carriers/vehicles and noninvasive therapeutic alternatives of conventional methods for better therapeutics of CNS related diseases. Hence, there is an urgent need to design nontoxic biocompatible drugs and develop noninvasive delivery methods to check posttreatment clinical fatalities in neuropatients which occur due to existing highly toxic invasive drugs and treatment methods.
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Affiliation(s)
- Ravi Kant Upadhyay
- Department of Zoology, DDU Gorakhpur University, Gorakhpur 273009, India
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