1
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Quintero YC, Nagarajan R. Is Structural Precision of Platonic Micelles Controlled Solely by Close-Packed Head Groups or Also by Hydrophobic Tail Packing? A DFT Exploration. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1425-1433. [PMID: 36651695 DOI: 10.1021/acs.langmuir.2c02704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Platonic micelles have been defined as structurally precise amphiphilic aggregates with discrete aggregation numbers corresponding to the close packing of spherical caps (representing head groups) on a sphere (representing hydrophobic core), analogous to the Tammes problem in geometry. Here, we use DFT to explore how an actual molecule behaves compared to the idealized picture based on the Tammes problem by also considering the packing of the tails. We modeled micelles of aggregation numbers 4 to 8 generated from the calix[4]arene amphiphile, PACaL3, with the tails forming a close-packed configuration while the headgroups are arranged as in Platonic solids. The DFT calculations reveal that tail packing overwhelmingly influences the equilibrium aggregation number. While the DFT prediction of a PACaL3 micelle of aggregation number 6 agrees with the scattering experiments of the Sakurai group, DFT calculations also suggest small concentrations of micelles of aggregation number 7. More interestingly, DFT calculations reveal that PACaL3 micelle formation occurs even though less than 20% of the hydrophobic tail surface is removed from contact with water, in contrast to the roughly 80% removal observed for classical surfactant micelles. While the close-packed head groups model predicts higher coverage of the hydrophobic surface for aggregation numbers 4 and 6 compared to 5 and 7, the DFT calculations also accounting for tail packing show that the surface coverage for aggregation numbers 5 and 7 is practically no different than that for aggregation number 4. Finally, although both the close-packed head groups model and the DFT calculations agree that the exposed hydrophobic surface area controls the equilibrium micelle aggregation number, the DFT calculations demonstrate how this exposed hydrophobic area is overwhelmingly determined by the tail group packing and not just by the close packing of head groups.
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Affiliation(s)
- Yenny Cardona Quintero
- U.S. Army DEVCOM Soldier Center, 15 General Greene Avenue, Natick, Massachusetts01760, United States
| | - Ramanathan Nagarajan
- U.S. Army DEVCOM Soldier Center, 15 General Greene Avenue, Natick, Massachusetts01760, United States
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2
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Gibadullina EM, Mukhamet’yanova AD, Kaupov AR, Pudovik MA, Burilov AR. Octacis(2-hydroxyethylated) Calix[4]resorcinarenes Phosphorochloridates as Precursors in Production of Water-Soluble Calix[4]resorcinarene and Phosphoramidates. RUSS J GEN CHEM+ 2021. [DOI: 10.1134/s1070363221100170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Antipin IS, Alfimov MV, Arslanov VV, Burilov VA, Vatsadze SZ, Voloshin YZ, Volcho KP, Gorbatchuk VV, Gorbunova YG, Gromov SP, Dudkin SV, Zaitsev SY, Zakharova LY, Ziganshin MA, Zolotukhina AV, Kalinina MA, Karakhanov EA, Kashapov RR, Koifman OI, Konovalov AI, Korenev VS, Maksimov AL, Mamardashvili NZ, Mamardashvili GM, Martynov AG, Mustafina AR, Nugmanov RI, Ovsyannikov AS, Padnya PL, Potapov AS, Selektor SL, Sokolov MN, Solovieva SE, Stoikov II, Stuzhin PA, Suslov EV, Ushakov EN, Fedin VP, Fedorenko SV, Fedorova OA, Fedorov YV, Chvalun SN, Tsivadze AY, Shtykov SN, Shurpik DN, Shcherbina MA, Yakimova LS. Functional supramolecular systems: design and applications. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr5011] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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4
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Pan Y, Hu X, Guo D. Biomedizinische Anwendungen von Calixarenen: Stand der Wissenschaft und Perspektiven. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916380] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yu‐Chen Pan
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Xin‐Yue Hu
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Dong‐Sheng Guo
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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5
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Pan Y, Hu X, Guo D. Biomedical Applications of Calixarenes: State of the Art and Perspectives. Angew Chem Int Ed Engl 2020; 60:2768-2794. [DOI: 10.1002/anie.201916380] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Yu‐Chen Pan
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Xin‐Yue Hu
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
| | - Dong‐Sheng Guo
- College of Chemistry, Key Laboratory of Functional Polymer Materials (Ministry of Education) State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China
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Mukai M, Cheng CH, Ma W, Chin M, Lin CH, Luo SC, Takahara A. Synthesis of a conductive polymer thin film having a choline phosphate side group and its bioadhesive properties. Chem Commun (Camb) 2020; 56:2691-2694. [DOI: 10.1039/c9cc09949b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A conductive polymer thin film having choline phosphate as the side group was prepared. The polymer thin film can prevent bovine serum albumin binding while present nice fibroblast cell adhesion.
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Affiliation(s)
- Masaru Mukai
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Nishi-ku
- Japan
| | - Chao-Hung Cheng
- Graduate School of Engineering
- Kyushu University
- Nishi-ku
- Japan
| | - Wei Ma
- International Institute for Carbon-Neutral Energy Research (WPI-I2CER)
- Kyushu University
- Nishi-ku
- Japan
| | - Mi Chin
- Department of Materials Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Chia-Hsin Lin
- Department of Materials Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Shyh-Chyang Luo
- Department of Materials Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Atsushi Takahara
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Nishi-ku
- Japan
- Graduate School of Engineering
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7
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Mihara S, Yamaguchi K, Kobayashi M. Intermolecular Interaction of Polymer Brushes Containing Phosphorylcholine and Inverse-Phosphorylcholine. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:1172-1180. [PMID: 30056718 DOI: 10.1021/acs.langmuir.8b01764] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Choline phosphate (CP) is a phosphobetaine-type zwitterionic functional group, referred to as inverse phosphorylcholine (PC) due to the reverse orientation of a positively charged quaternary amine and anionic phosphate in contrast to PC lipids in nature. The A unique dipole paring between CP and PC groups has attracted much attention in the biointerface research field. Herein, to evaluate the molecular interaction between the CP and PC groups in water, force-distance curve measurements using scanning probe microscopy (SPM) with a PC-group-functionalized cantilever was carried out on the surface of polymer brushes bearing the CP groups. Three types of methacrylate monomers bearing CP with ethyl (Et), methoxyethyl (MOE), and isopropyl (iPr) phosphates were synthesized in 42-71% yields, and polymerized by surface-initiated atom transfer radical polymerization to form polymer brushes on silicon wafers. The surface free energy of CP-polymer brushes with Et, MOE, and iPr was estimated to be 64.0, 61.4, and 57.4 mN m-1, respectively, based on contact angle measurements. Force-distance curve measurements of polymer brushes having a CP group was conducted in water at 25 °C by SPM using a spherical probe produced by attaching a silica particle (SiP; d = 25 μm) covered with PC or CP groups to a tipless cantilever. Adhesion force larger than 14 nN was observed between the CP-polymer brushes and PC-SiP, whereas PC-polymer brushes revealed extremely low adhesion force of less than 0.6 nN with PC-SiP and propylsilane-modified SiP. The specific attractive molecular interaction between CP and PC groups was quantitatively evaluated.
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Miyake R, Fujii S, Lee JH, Takahashi R, Sakurai K. Dual and multiple stimuli-responsive platonic micelles bearing disaccharides. J Colloid Interface Sci 2019; 535:8-15. [DOI: 10.1016/j.jcis.2018.09.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/12/2018] [Accepted: 09/12/2018] [Indexed: 11/30/2022]
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9
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Mukai M, Higaki Y, Hirai T, Takahara A. Separation of Endo-cyclic 2-Methacryloyloxyethyl Choline Phosphate by Anion Exchange Approach. CHEM LETT 2018. [DOI: 10.1246/cl.180787] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Masaru Mukai
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yuji Higaki
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tomoyasu Hirai
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Atsushi Takahara
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Graduate School of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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Burilov VA, Fatikhova GA, Dokuchaeva MN, Nugmanov RI, Mironova DA, Dorovatovskii PV, Khrustalev VN, Solovieva SE, Antipin IS. Synthesis of new p-tert-butylcalix[4]arene-based polyammonium triazolyl amphiphiles and their binding with nucleoside phosphates. Beilstein J Org Chem 2018; 14:1980-1993. [PMID: 30202452 PMCID: PMC6122204 DOI: 10.3762/bjoc.14.173] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 07/13/2018] [Indexed: 01/10/2023] Open
Abstract
The synthesis of new calix[4]arenes adopting a cone stereoisomeric form bearing two or four azide fragments on the upper rim and water-soluble triazolyl amphiphilic receptors with two or four polyammonium headgroups via copper-catalyzed azide–alkyne cycloaddition reaction has been performed for the first time. It was found that the synthesized macrocycles form stable aggregates with hydrodynamic diameters between 150–200 nm and electrokinetic potentials about +40 to +60 mV in water solutions. Critical aggregation concentration (CAC) values were measured using a micelle method with pyrene and eosin Y as dye probes. The CAC values of tetraalkyl-substituted macrocycles 12a,b (5 µM for both) are significantly lower than those for dialkyl-substituted macrocycles 10a,b (790 and 160 µM, respectively). Premicellar aggregates of macrocycles 10a,b and 12a,b with the dye eosin Y were used for nucleotides sensing through a dye replacement procedure. It is unusual that disubstituted macrocycles 10a,b bind more effectively a less charged adenosine 5'-diphosphate (ADP) than adenosine 5'-triphosphate (ATP). A simple colorimetric method based on polydiacetylene vesicles decorated with 10b was elaborated for the naked-eye detection of ADP with a detection limit of 0.5 mM.
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Affiliation(s)
- Vladimir A Burilov
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | | | - Mariya N Dokuchaeva
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Ramil I Nugmanov
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Diana A Mironova
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation
| | - Pavel V Dorovatovskii
- National Research Center "Kurchatov Institute", 1 Ak. Kurchatov Square, Moscow 123182, Russian Federation
| | - Victor N Khrustalev
- National Research Center "Kurchatov Institute", 1 Ak. Kurchatov Square, Moscow 123182, Russian Federation.,Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklay Street, Moscow 117198, Russin Federation
| | - Svetlana E Solovieva
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation.,A. E. Arzubov Institute of Organic & Physical Chemistry, 8 Arzubov Street, Kazan 420088, Russian Federation
| | - Igor S Antipin
- Kazan Federal University, 18 Kremlevskaya st., Kazan 420008, Russian Federation.,A. E. Arzubov Institute of Organic & Physical Chemistry, 8 Arzubov Street, Kazan 420088, Russian Federation
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11
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Fujii S, Lee JH, Takahashi R, Sakurai K. Rediscovering the Monodispersity of Sulfonatocalix[4]arene-Based Micelles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:5072-5078. [PMID: 29638129 DOI: 10.1021/acs.langmuir.8b00802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
When the micellar aggregation number ( Nagg) is small enough (<30), the Nagg matches the value of vertexes of a regular polyhedron: Platonic solids, and demonstrates perfect monodispersity. These micelles are named Platonic micelles and are particularly found in the system of calix[4]arene-based micelles due to the rigid structure of the backbone molecule. Although sulfonatocalix[4]arene-based micelles are among the most studied host molecules in supramolecular chemistry, their micellar properties as Platonic micelles have thus far been overlooked. In this study, we prepared various sulfonatocalix[4]arene-based amphiphiles bearing alkyl chains with different lengths and investigated their aggregation behavior. When the amphiphiles formed spherical micelles, they demonstrated monodispersity in terms of Nagg, whose value changed from 4 to 17, and then to 24, upon increasing the carbon number in each alkyl chain from C5 to C6, and then to C7, respectively. Although the numbers 17 and 24 do not match the vertices of regular polyhedra, these values can be reasonably explained by the Thomson problem, which considers the Coulomb potential for calculating the best packing on a sphere with multiple identical spherical caps. This study describes rediscovery of the monodispersity of sulfonatocalix[4]arene-based micelles, which is consistent with the idea of Platonic micelles.
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Affiliation(s)
- Shota Fujii
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1 Hibikino , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Ji Ha Lee
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1 Hibikino , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1 Hibikino , Kitakyushu , Fukuoka 808-0135 , Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry , University of Kitakyushu , 1-1 Hibikino , Kitakyushu , Fukuoka 808-0135 , Japan
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12
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Fujii S, Takahashi R, Ha LJ, Sakurai K. A tetramer micelle: the smallest aggregation number corresponding to the vertex number of regular polyhedra in platonic micelles. SOFT MATTER 2018; 14:875-878. [PMID: 29303521 DOI: 10.1039/c7sm02028g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this paper, we describe the construction of tetramer micelles based on the idea of "Platonic micelles" whose aggregation number (Nagg) matches the vertex number of regular polyhedra and exhibits the monodispersity and discreteness in the Nagg.
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Affiliation(s)
- Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan.
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan.
| | - Lee Ji Ha
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan.
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan.
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Yoshida K, Fujii S, Takahashi R, Matsumoto S, Sakurai K. Self-Assembly of Calix[4]arene-Based Amphiphiles Bearing Polyethylene Glycols: Another Example of "Platonic Micelles". LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9122-9128. [PMID: 28792766 DOI: 10.1021/acs.langmuir.7b02196] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The aggregation number of classical micelles exhibits a certain distribution, which is a recognizable feature of conventional micelles. However, we recently identified perfectly monodisperse calix[4]arene-based micelles whose aggregation numbers agree with the vertex numbers of regular polyhedra, that is, Platonic solids, and thus they are named "Platonic micelles". Regarding our hypothesis of the formation mechanism of Platonic micelles, both repulsive interactions including steric hindrance and electrostatic repulsions among the headgroups are important for determining their aggregation number; however, neither of these is necessarily needed to consider. In this study, we employed polyethylene glycols (PEGs) as the nonionic headgroup of calix[4]arene-based amphiphiles to study the effects of only repulsive interactions caused by steric hindrance on the formation of Platonic micelles. The amphiphiles containing relatively low-molecular-weight PEGs (550 or 1000 g mol-1) form dodecamer or octamer micelles, respectively, with no variation in the aggregation number. However, relatively high-molecular-weight PEGs (2000 g mol-1) produce polydispersed micelles with a range of aggregation number. PEG 2000 exhibits a greater affinity for water than PEG 550 and 1000, resulting in fewer hydrophobic interactions in micelle formation, as indicated by the drastic increase of the critical micelle concentration (CMC) value in the PEG 2000 system. The instability of the structure of PEG2kCaL5 micelles might contribute to the higher mobility of PEG in the micellar shell, resulting in a non-Platonic aggregation number with polydispersity.
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Affiliation(s)
- Kenta Yoshida
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Sakiko Matsumoto
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
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14
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Chen X, Yang M, Liu B, Li Z, Tan H, Li J. Multilayer Choline Phosphate Molecule Modified Surface with Enhanced Cell Adhesion but Resistance to Protein Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8295-8301. [PMID: 28759995 DOI: 10.1021/acs.langmuir.7b01050] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Choline phosphate (CP), which is a new zwitterionic molecule, and has the reverse order of phosphate choline (PC) and could bind to the cell membrane though the unique CP-PC interaction. Here we modified a glass surface with multilayer CP molecules using surface-initiated atom-transfer radical polymerization (SI-ATRP) and the ring-opening method. Polymeric brushes of (dimethylamino)ethyl methacrylate (DMAEMA) were synthesized by SI-ATRP from the glass surface. Then the grafted PDMAEMA brushes were used to introduce CP groups to fabricate the multilayer CP molecule modified surface. The protein adsorption experiment and cell culture test were used to evaluate the biocompatibility of the modified surfaces by using human umbilical veinendothelial cells (HUVECs). The protein adsorption results demonstrated that the multilayer CP molecule decorated surface could prevent the adsorption of fibrinogen and serum protein. The adhesion and proliferation of cells were improved significantly on the multilayer CP molecule modified surface. Therefore, the biocompatibility of the material surface could be improved by the modified multilayer CP molecule, which exhibits great potential for biomedical applications, e.g., scaffolds in tissue engineering.
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Affiliation(s)
- Xingyu Chen
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
- College of Medicine, Southwest Jiaotong University , Chengdu 610003, China
| | - Ming Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Botao Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Zhiqiang Li
- Chengdu Military General Hospital , Chengdu, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
| | - Jianshu Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu 610065, China
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15
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Li S, Wang F, Li X, Chen J, Zhang X, Wang Y, Liu J. Dipole Orientation Matters: Longer-Circulating Choline Phosphate than Phosphocholine Liposomes for Enhanced Tumor Targeting. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17736-17744. [PMID: 28488431 DOI: 10.1021/acsami.7b03160] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Zwitterionic phosphocholine (PC) liposomes are widely used in drug delivery because of their high biocompatibility and long blood circulation time. We herein report that by flipping the direction of the PC dipole, the resulting choline phosphate (CPe) liposomes have an even longer circulation time, as confirmed at both cellular and animal-model levels. Even when 33% cholesterol was included in the lipid formulation with a poly(ethylene glycol) layer, the CPe liposome still had a longer blood circulation time. Isothermal titration calorimetry indicates a lack of protein adsorption or PC membrane attachment for the CPe liposomes. This is different from the previously reported adhesion of CP polymers to PC lipid membranes, which may be attributed to the different ways of displaying the CP headgroup. With a longer blood circulation time, the CPe liposomes accumulated in tumors more easily than PC liposomes, which is likely due to the enhanced permeation and retention effect and tumor cell uptake. This study provides key insights into zwitterionic biointerfaces for biomedical, analytical, and materials applications.
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Affiliation(s)
- Shuya Li
- The CAS Key Laboratory of Innate Immunity and Chronic Diseases, School of Life Sciences and Medical Center, University of Science & Technology of China , Hefei, Anhui 230027, China
| | - Feng Wang
- School of Biological and Medical Engineering, Hefei University of Technology , Hefei, Anhui 230009, China
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Xiaoqiu Li
- The CAS Key Laboratory of Innate Immunity and Chronic Diseases, School of Life Sciences and Medical Center, University of Science & Technology of China , Hefei, Anhui 230027, China
- Department of Oncology, The First Affiliate Hospital of Anhui Medical University , Hefei, Anhui 230022, China
| | - Jing Chen
- The CAS Key Laboratory of Innate Immunity and Chronic Diseases, School of Life Sciences and Medical Center, University of Science & Technology of China , Hefei, Anhui 230027, China
| | - Xiaohan Zhang
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Yucai Wang
- The CAS Key Laboratory of Innate Immunity and Chronic Diseases, School of Life Sciences and Medical Center, University of Science & Technology of China , Hefei, Anhui 230027, China
| | - Juewen Liu
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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Takahashi R, Matsumoto S, Fujii S, Narayanan T, Sakurai K. Monitoring the Discontinuous Dodecamer-Icosamer Transition of a Calix[4]arene-Derived Surfactant by Time-Resolved Small-Angle X-ray Scattering. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702260] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rintaro Takahashi
- ESRF-The European Synchrotron; 71 Avenue des Martyrs 38043 Grenoble France
- Department of Chemistry and Biochemistry; University of Kitakyushu; 1-1 Hibikino, Wakamatsu-ku, Kitakyushu Fukuoka 808-0135 Japan
| | - Sakiko Matsumoto
- Department of Chemistry and Biochemistry; University of Kitakyushu; 1-1 Hibikino, Wakamatsu-ku, Kitakyushu Fukuoka 808-0135 Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry; University of Kitakyushu; 1-1 Hibikino, Wakamatsu-ku, Kitakyushu Fukuoka 808-0135 Japan
| | | | - Kazuo Sakurai
- Department of Chemistry and Biochemistry; University of Kitakyushu; 1-1 Hibikino, Wakamatsu-ku, Kitakyushu Fukuoka 808-0135 Japan
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17
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Takahashi R, Matsumoto S, Fujii S, Narayanan T, Sakurai K. Monitoring the Discontinuous Dodecamer-Icosamer Transition of a Calix[4]arene-Derived Surfactant by Time-Resolved Small-Angle X-ray Scattering. Angew Chem Int Ed Engl 2017; 56:6734-6738. [PMID: 28481461 DOI: 10.1002/anie.201702260] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Indexed: 11/07/2022]
Abstract
Calix[4]arene-derived surfactants form monodisperse micelles with a well-defined aggregation number (Nagg ) of 4, 6, 8, 12, or 20, corresponding to the Platonic solids. This feature is in strong contrast to conventional micelles. In this study, a transition from a dodecamer (Nagg =12) to an icosamer (Nagg =20) was induced by a rapid increase in the NaCl concentration (CNaCl ) using a stopped-flow device and directly observed by time-resolved small-angle X-ray scattering. The Nagg remained unchanged during the first 60 s after the increase in CNaCl , and then abruptly increased to 20. This feature resembles phase transitions in supersaturated or supercooled states, or highly cooperative phenomena. We surmise that this finding may be due to the fact that only a few Nagg values are thermodynamically allowed when Nagg is sufficiently small. This is the first observation of such an induction time in micellar aggregation.
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Affiliation(s)
- Rintaro Takahashi
- ESRF-The European Synchrotron, 71 Avenue des Martyrs, 38043, Grenoble, France.,Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | - Sakiko Matsumoto
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
| | | | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, 808-0135, Japan
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18
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Matsumoto S, Takahashi R, Yamada S, Fujii S, Sakurai K. Salt-induced Morphology Transition of a Micelle Formed of a Calix[4]arene-Derivative Cationic Surfactant in Aqueous Solution. CHEM LETT 2017. [DOI: 10.1246/cl.170032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Sakiko Matsumoto
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135
- ESRF–The European Synchrotron, 71 Avenue des Martyrs, F-38043 Grenoble, France
| | - Shimpei Yamada
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135
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19
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Fujii S, Takahashi R, Sakurai K. Glutamic Acids Bearing Calix[4]arene Micelles: pH-Controllable Aggregation Number Corresponding to Regular Polyhedra. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4019-4027. [PMID: 28359151 DOI: 10.1021/acs.langmuir.7b00603] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We have prepared a new calix[4]arene-based lipid containing glutamic acid as the hydrophilic group. The α-amine and the γ-carboxylic acid groups of the glutamic acid moiety allowed a continuous change in the state of the headgroup from cationic to zwitterionic and then to anionic with increasing pH. Accompanying this headgroup change, micelles of the lipid underwent a morphological transformation from spherical to cylindrical and again to spherical. The morphological transition was ascribed to the change in the lipid conformation corresponding to the pH conditions. Interestingly, at acidic and basic pH, the spherical micelles demonstrated monodispersity in terms of the aggregation number, which agreed with the vertex numbers of Platonic solids, indicating the formation of Platonic micelles. At acidic and basic pH, the lipid conformations were almost identical, but there was a slight difference in the hydrophilic volume, which might affect the packing behavior of the lipid in micelles and account for the difference in the aggregation number. This study clearly demonstrates the precise pH-controllable aggregation number of micelles, which belong to the Platonic micelle systems.
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Affiliation(s)
- Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Rintaro Takahashi
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu , 1-1 Hibikino, Kitakyushu, Fukuoka 808-0135, Japan
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20
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Fujii S, Yamada S, Matsumoto S, Kubo G, Yoshida K, Tabata E, Miyake R, Sanada Y, Akiba I, Okobira T, Yagi N, Mylonas E, Ohta N, Sekiguchi H, Sakurai K. Platonic Micelles: Monodisperse Micelles with Discrete Aggregation Numbers Corresponding to Regular Polyhedra. Sci Rep 2017; 7:44494. [PMID: 28290532 PMCID: PMC5349551 DOI: 10.1038/srep44494] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/08/2017] [Indexed: 11/27/2022] Open
Abstract
The concept of micelles was first proposed in 1913 by McBain and has rationalized numerous experimental results of the self-aggregation of surfactants. It is generally agreed that the aggregation number (Nagg) for spherical micelles has no exact value and a certain distribution. However, our studies of calix[4]arene surfactants showed that they were monodisperse with a defined Nagg whose values are chosen from 6, 8, 12, 20, and 32. Interestingly, some of these numbers coincide with the face numbers of Platonic solids, thus we named them "Platonic micelles". The preferred Nagg values were explained in relation to the mathematical Tammes problem: how to obtain the best coverage of a sphere surface with multiple identical circles. The coverage ratio D(N) can be calculated and produces maxima at N = 6, 12, 20, and 32, coinciding with the observed Nagg values. We presume that this "Platonic nature" may hold for any spherical micelles when Nagg is sufficiently small.
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Affiliation(s)
- Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Shimpei Yamada
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Sakiko Matsumoto
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Genki Kubo
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Kenta Yoshida
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Eri Tabata
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Rika Miyake
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Yusuke Sanada
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Isamu Akiba
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Tadashi Okobira
- Department of Chemical Science and Engineering, Ariake National College of Technology, 150 Higashihagio-Machi, Omuta, Fukuoka 836-8585, Japan
| | - Naoto Yagi
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan
| | - Efstratios Mylonas
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan
| | - Noboru Ohta
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan
| | - Hiroshi Sekiguchi
- Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Sayo, Hyogo 679-5198, Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
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Sakamoto S, Fujii S, Yoshida K, Sakurai K. Supramolecular Chirality: Vesicle-to-Chiral Helix Transition of the Micelles Consisting of a Sugar-Bearing Calix[4]arene Surfactant. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12434-12441. [PMID: 27389732 DOI: 10.1021/acs.langmuir.6b01671] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Supramolecular self-assembly and the resulting chiral transfer from the molecular level to the nanoscale is a major topic in modern supramolecular chemistry. We synthesized a galactose-bearing calix[4]arene surfactant (chiral) and mixed it with a primary amine-bearing analogue (achiral). The mixture showed strong induced circular dichroism (ICD) at an almost 3:2 molar ratio of the two surfactants, and exothermic heat was observed upon mixing. The magnitude of ΔH was comparable to that of van der Waals interactions. This phenomenon indicated that the ICD can be ascribed to the formation of a new supramolecular assembly in which the stoichiometric interaction between the two molecules leads to complexation and the resultant complex has chiral morphology. Transmission electron microscopy and small-angle X-ray scattering showed that the galactose-bearing surfactant forms vesicles, and the mixing induces a transition from the vesicles to threadlike cylinders with a diameter of ∼3.0 nm. We presume that these cylinder are twisted because of chiral transfer from the chiral galactose moiety and show ICD.
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Affiliation(s)
- Shunsuke Sakamoto
- Department of Chemistry and Biochemistry, University of Kitakyushu , Fukuoka 808-0132, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu , Fukuoka 808-0132, Japan
| | - Kenta Yoshida
- Department of Chemistry and Biochemistry, University of Kitakyushu , Fukuoka 808-0132, Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu , Fukuoka 808-0132, Japan
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22
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Zheng Q, Zhou X, Li H, Ma D, Xue W. Complex aggregates formed with a hyperbranched polyglycerol derivative for drug delivery. J Appl Polym Sci 2015. [DOI: 10.1002/app.42895] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Qianqian Zheng
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering; Jinan University; Guangzhou 510632 China
| | - Xiaoyan Zhou
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering; Jinan University; Guangzhou 510632 China
| | - Hui Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering; Jinan University; Guangzhou 510632 China
| | - Dong Ma
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering; Jinan University; Guangzhou 510632 China
| | - Wei Xue
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering; Jinan University; Guangzhou 510632 China
- Institute of Life and Health Engineering, Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes; Jinan University; Guangzhou 510632 China
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23
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Giuliani M, Morbioli I, Sansone F, Casnati A. Moulding calixarenes for biomacromolecule targeting. Chem Commun (Camb) 2015; 51:14140-59. [PMID: 26286064 DOI: 10.1039/c5cc05204a] [Citation(s) in RCA: 104] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
After their successful use as a preorganized platform for the preparation of receptors for metal ions and small neutral molecules over the last 15 years, calixarenes are enjoying a renaissance of popularity as scaffolds for ligands that are able to efficiently and selectively target macromolecules such as proteins/enzymes, nucleic acids and lipids. This feature article summarizes the peculiar factors characterizing the calixarene structure and properties, as well as outlines the main rules that can be used to turn such macrocycles into efficient and successful ligands for these classes of biomacromolecules. Factors that affect the multivalent properties of calixarenes, such as the size, conformation and stereochemical presentation of binding groups or their amphiphilicity and hybrid character, are described in detail with the use of a few selected examples from the literature. Perspectives and applications of these ligands in bionanotechnology and nanomedicine, such as protein sensing and inhibition, gene-delivery, targeted drug-delivery and cell imaging, are also discussed.
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Affiliation(s)
- Marta Giuliani
- Dip. to di Chimica, Università di Parma, Parco Area delle Scienze 17/a, 43124 Parma, Italy.
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24
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Chen X, Shang H, Cao S, Tan H, Li J. A zwitterionic surface with general cell-adhesive and protein-resistant properties. RSC Adv 2015. [DOI: 10.1039/c5ra16883j] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A choline phosphate functionalized surface is proved to have general cell-adhesive and protein-resistant properties, which give it potential for biomaterials.
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Affiliation(s)
- Xingyu Chen
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Hui Shang
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Shuqin Cao
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Hong Tan
- College of Polymer Science and Engineering
- Sichuan University
- China
| | - Jianshu Li
- College of Polymer Science and Engineering
- Sichuan University
- China
- State Key Laboratory of Polymer Materials Engineering
- Sichuan University
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25
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Hu G, Parelkar SS, Emrick T. A facile approach to hydrophilic, reverse zwitterionic, choline phosphate polymers. Polym Chem 2015. [DOI: 10.1039/c4py01292e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We describe a facile synthesis of an n-butyl substituted choline phosphate monomer (MBP), and its polymerization to afford polyMBP and its copolymers. PolyMBP provides access to water-soluble choline phosphate polymers that by cell culture analysis exhibit low toxicity and immunogenicity.
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Affiliation(s)
- Gaojie Hu
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
| | - Sangram S. Parelkar
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
| | - Todd Emrick
- Department of Polymer Science and Engineering
- University of Massachusetts Amherst
- Amherst
- USA
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