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Takibayeva AT, Zhumabayeva GK, Bakibaev AA, Demets OV, Lyapunova MV, Mamaeva EA, Yerkassov RS, Kassenov RZ, Ibrayev MK. Methods of Analysis and Identification of Betulin and Its Derivatives. Molecules 2023; 28:5946. [PMID: 37630198 PMCID: PMC10458966 DOI: 10.3390/molecules28165946] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/21/2023] [Accepted: 07/30/2023] [Indexed: 08/27/2023] Open
Abstract
This scientific work presents practical and theoretical material on the methods of analysis and identification of betulin and its key derivatives. The properties of betulin and its derivatives, which are determined by the structural features of this class of compounds and their tendency to form dimers, polymorphism and isomerization, are considered. This article outlines ways to improve not only the bioavailability but also the solubility of triterpenoids, as well as any hydrophobic drug substances, through chemical transformations by introducing various functional groups, such as carboxyl, hydroxyl, amino, phosphate/phosphonate and carbonyl. The authors of this article summarized the physicochemical characteristics of betulin and its compounds, systematized the literature data on IR and NMR spectroscopy and gave the melting temperatures of key acids and aldehydes based on betulin.
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Affiliation(s)
- Altynaray T. Takibayeva
- Department of Chemistry and Chemical Technologies, NJSC Karaganda Technical University Named after Abylkas Saginov, Karaganda 100027, Kazakhstan;
| | - Gulistan K. Zhumabayeva
- Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan; (G.K.Z.); (R.S.Y.)
| | - Abdigali A. Bakibaev
- Chemical Faculty, National Research Tomsk State University, 634028 Tomsk, Russia; (A.A.B.); (M.V.L.)
| | - Olga V. Demets
- Department of Chemistry and Chemical Technologies, NJSC Karaganda Technical University Named after Abylkas Saginov, Karaganda 100027, Kazakhstan;
| | - Maria V. Lyapunova
- Chemical Faculty, National Research Tomsk State University, 634028 Tomsk, Russia; (A.A.B.); (M.V.L.)
| | - Elena A. Mamaeva
- Chemical Faculty, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;
| | - Rakhmetulla Sh. Yerkassov
- Faculty of Natural Sciences, L.N. Gumilyov Eurasian National University, Astana 010000, Kazakhstan; (G.K.Z.); (R.S.Y.)
| | - Rymchan Z. Kassenov
- Department of Organic Chemistry and Polymers, Chemistry Faculty, NJSC Karaganda University Named after Y.A. Buketov, Karaganda 100024, Kazakhstan; (R.Z.K.); (M.K.I.)
| | - Marat K. Ibrayev
- Department of Organic Chemistry and Polymers, Chemistry Faculty, NJSC Karaganda University Named after Y.A. Buketov, Karaganda 100024, Kazakhstan; (R.Z.K.); (M.K.I.)
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Tavares MR, Kirakci K, Kotov N, Pechar M, Lang K, Pola R, Etrych T. Octahedral Molybdenum Cluster-Based Nanomaterials for Potential Photodynamic Therapy. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3350. [PMID: 36234477 PMCID: PMC9565569 DOI: 10.3390/nano12193350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/16/2022] [Accepted: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Photo/radiosensitizers, such as octahedral molybdenum clusters (Mo6), have been intensively studied for photodynamic applications to treat various diseases. However, their delivery to the desired target can be hampered by its limited solubility, low stability in physiological conditions, and inappropriate biodistribution, thus limiting the therapeutic effect and increasing the side effects of the therapy. To overcome such obstacles and to prepare photofunctional nanomaterials, we employed biocompatible and water-soluble copolymers based on N-(2-hydroxypropyl)methacrylamide (pHPMA) as carriers of Mo6 clusters. Several strategies based on electrostatic, hydrophobic, or covalent interactions were employed for the formation of polymer-cluster constructs. Importantly, the luminescent properties of the Mo6 clusters were preserved upon association with the polymers: all polymer-cluster constructs exhibited an effective quenching of their excited states, suggesting a production of singlet oxygen (O2(1Δg)) species which is a major factor for a successful photodynamic treatment. Even though the colloidal stability of all polymer-cluster constructs was satisfactory in deionized water, the complexes prepared by electrostatic and hydrophobic interactions underwent severe aggregation in phosphate buffer saline (PBS) accompanied by the disruption of the cohesive forces between the cluster and polymer molecules. On the contrary, the conjugates prepared by covalent interactions notably displayed colloidal stability in PBS in addition to high luminescence quantum yields, suggesting that pHPMA is a suitable nanocarrier for molybdenum cluster-based photosensitizers intended for photodynamic applications.
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Affiliation(s)
- Marina Rodrigues Tavares
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského Náměstí 2, 162 06 Prague 6, Czech Republic
| | - Kaplan Kirakci
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež 1001, Czech Republic
| | - Nikolay Kotov
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského Náměstí 2, 162 06 Prague 6, Czech Republic
| | - Michal Pechar
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského Náměstí 2, 162 06 Prague 6, Czech Republic
| | - Kamil Lang
- Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež 1001, Czech Republic
| | - Robert Pola
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského Náměstí 2, 162 06 Prague 6, Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského Náměstí 2, 162 06 Prague 6, Czech Republic
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A review on application of nanoparticles in cEOR: Performance, mechanisms, and influencing parameters. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Melnikova NB, Malygina DS, Vorobyova OA, Solovyeva AG, Belyaeva KL, Orekhov DV, Knyazev AV. Properties of Langmuir and immobilized layers of betulin diphosphate on aqueous solutions of zinc sulfate and on the surface of zinc oxide nanoparticles. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3084-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Tavares MR, Hrabánková K, Konefał R, Kaňa M, Říhová B, Etrych T, Šírová M, Chytil P. HPMA-Based Copolymers Carrying STAT3 Inhibitor Cucurbitacin-D as Stimulus-Sensitive Nanomedicines for Oncotherapy. Pharmaceutics 2021; 13:pharmaceutics13020179. [PMID: 33525658 PMCID: PMC7911143 DOI: 10.3390/pharmaceutics13020179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/19/2022] Open
Abstract
The study describes the synthesis, physicochemical properties, and biological evaluation of polymer therapeutics based on N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers intended for a tumor-targeted immuno-oncotherapy. Water-soluble linear and cholesterol-containing HPMA precursors were synthesized using controlled reversible addition–fragmentation chain transfer polymerization to reach molecular weight Mn about 2 × 104 g·mol−1 and low dispersity. These linear or self-assembled micellar conjugates, containing immunomodulatory agent cucurbitacin-D (CuD) or the anticancer drug doxorubicin (Dox) covalently bound by the hydrolytically degradable hydrazone bond, showed a hydrodynamic size of 10–30 nm in aqueous solutions. The CuD-containing conjugates were stable in conditions mimicking blood. Importantly, a massive release of active CuD in buffer mimicking the acidic tumor environment was observed. In vitro, both the linear (LP-CuD) and the micellar (MP-CuD) conjugates carrying CuD showed cytostatic/cytotoxic activity against several cancer cell lines. In a murine metastatic and difficult-to-treat 4T1 mammary carcinoma, only LP-CuD showed an anticancer effect. Indeed, the co-treatment with Dox-containing micellar polymer conjugate and LP-CuD showed potentiation of the anticancer effect. The results indicate that the binding of CuD, characterized by prominent hydrophobic nature and low bioavailability, to the polymer carrier allows a safe and effective delivery. Therefore, the conjugate could serve as a potential component of immuno-oncotherapy schemes within the next preclinical evaluation.
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Affiliation(s)
- Marina R. Tavares
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Klára Hrabánková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Rafał Konefał
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Martin Kaňa
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Blanka Říhová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
| | - Milada Šírová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; (K.H.); (M.K.); (B.Ř.); (M.Š.)
| | - Petr Chytil
- Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovského náměstí 2, CZ-162 06 Prague 6, Czech Republic; (M.R.T.); (R.K.); (T.E.)
- Correspondence: ; Tel.: +420-296-809-230
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Braunová A, Chytil P, Laga R, Šírová M, Machová D, Parnica J, Říhová B, Janoušková O, Etrych T. Polymer nanomedicines based on micelle-forming amphiphilic or water-soluble polymer-doxorubicin conjugates: Comparative study of in vitro and in vivo properties related to the polymer carrier structure, composition, and hydrodynamic properties. J Control Release 2020; 321:718-733. [DOI: 10.1016/j.jconrel.2020.03.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 02/05/2020] [Accepted: 03/02/2020] [Indexed: 10/24/2022]
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Zhang X, Chytil P, Etrych T, Liu W, Rodrigues L, Winter G, Filippov SK, Papadakis CM. Binding of HSA to Macromolecular pHPMA Based Nanoparticles for Drug Delivery: An Investigation Using Fluorescence Methods. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7998-8006. [PMID: 29949376 DOI: 10.1021/acs.langmuir.8b01015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Amphiphilic poly( N-(2-hydroxypropyl)methacrylamide) copolymers ( pHPMA) bearing cholesterol side groups in phosphate buffer saline self-assemble into nanoparticles (NPs) which can be used as tumor-targeted drug carriers. It was previously shown by us that human serum albumin (HSA) interacts weakly with the NPs. However, the mechanism of this binding could not be resolved due to overlapping of signals from the complex system. Here, we use fluorescence labeling to distinguish the components and to characterize the binding: On the one hand, a fluorescent dye was attached to pHPMA, so that the diffusion behavior of the NPs could be studied in the presence of HSA using fluorescence lifetime correlation spectroscopy. On the other hand, quenching of the intrinsic fluorescence of HSA revealed the origin of the binding, which is mainly the complexation between HSA and cholesterol side groups. Furthermore, a binding constant was obtained.
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Affiliation(s)
- Xiaohan Zhang
- Physik-Department, Physik weicher Materie , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
| | - Petr Chytil
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského nám. 2 , 162 06 Prague 6 , Czech Republic
| | - Tomáš Etrych
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského nám. 2 , 162 06 Prague 6 , Czech Republic
| | - Weiwei Liu
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics , Ludwig-Maximilians-Universität München , Butenandtstr. 5 , 81377 Munich , Germany
| | - Leticia Rodrigues
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics , Ludwig-Maximilians-Universität München , Butenandtstr. 5 , 81377 Munich , Germany
| | - Gerhard Winter
- Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics , Ludwig-Maximilians-Universität München , Butenandtstr. 5 , 81377 Munich , Germany
| | - Sergey K Filippov
- Institute of Macromolecular Chemistry , Czech Academy of Sciences , Heyrovského nám. 2 , 162 06 Prague 6 , Czech Republic
| | - Christine M Papadakis
- Physik-Department, Physik weicher Materie , Technische Universität München , James-Franck-Str. 1 , 85748 Garching , Germany
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Zhang X, Niebuur BJ, Chytil P, Etrych T, Filippov SK, Kikhney A, Wieland DCF, Svergun DI, Papadakis CM. Macromolecular pHPMA-Based Nanoparticles with Cholesterol for Solid Tumor Targeting: Behavior in HSA Protein Environment. Biomacromolecules 2018; 19:470-480. [PMID: 29381335 DOI: 10.1021/acs.biomac.7b01579] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nanoparticles (NPs) that form by self-assembly of amphiphilic poly(N-(2-hydroxypropyl)-methacrylamide) (pHPMA) copolymers bearing cholesterol side groups are potential drug carriers for solid tumor treatment. Here, we investigate their behavior in solutions of human serum albumin (HSA) in phosphate buffered saline. Mixed solutions of NPs, from polymer conjugates with or without the anticancer drug doxorubicin (Dox) bound to them, and HSA at concentrations up to the physiological value are characterized by synchrotron small-angle X-ray scattering and isothermal titration calorimetry. When Dox is absent, a small amount of HSA molecules bind to the cholesterol groups that form the core of the NPs by diffusing through the loose pHPMA shell or get caught in meshes formed by the pHPMA chains. These interactions are strongly hindered by the presence of Dox, which is distributed in the pHPMA shell, meaning that the delivery of Dox by the NPs in the human body is not affected by the presence of HSA.
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Affiliation(s)
- Xiaohan Zhang
- Technische Universität München , Physik-Department, Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Bart-Jan Niebuur
- Technische Universität München , Physik-Department, Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
| | - Petr Chytil
- Institute of Macromolecular Chemistry , Czech Academy of Sciences, v. v. i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Tomas Etrych
- Institute of Macromolecular Chemistry , Czech Academy of Sciences, v. v. i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Sergey K Filippov
- Institute of Macromolecular Chemistry , Czech Academy of Sciences, v. v. i., Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Alexey Kikhney
- European Molecular Biology Laboratory, Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | - D C Florian Wieland
- European Molecular Biology Laboratory, Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | - Dmitri I Svergun
- European Molecular Biology Laboratory, Hamburg Outstation, c/o Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany
| | - Christine M Papadakis
- Technische Universität München , Physik-Department, Physik weicher Materie, James-Franck-Str. 1, 85748 Garching, Germany
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