101
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Volkova T, Chibunova E, Silyukov O, Proshin A, Terekhova I. Impact of biorelevant media on pharmacologically important properties of potential neuroprotectors based on 1,2,4-thiadiazole. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.09.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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102
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Determination of reversed-phase high performance liquid chromatography based octanol-water partition coefficients for neutral and ionizable compounds: Methodology evaluation. J Chromatogr A 2017; 1528:25-34. [DOI: 10.1016/j.chroma.2017.10.064] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Revised: 08/27/2017] [Accepted: 10/26/2017] [Indexed: 01/01/2023]
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103
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Cvijetić IN, Verbić TŽ, Ernesto de Resende P, Stapleton P, Gibbons S, Juranić IO, Drakulić BJ, Zloh M. Design, synthesis and biological evaluation of novel aryldiketo acids with enhanced antibacterial activity against multidrug resistant bacterial strains. Eur J Med Chem 2017; 143:1474-1488. [PMID: 29133041 DOI: 10.1016/j.ejmech.2017.10.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/04/2017] [Accepted: 10/15/2017] [Indexed: 01/05/2023]
Abstract
Antimicrobial resistance (AMR) is a major health problem worldwide, because of ability of bacteria, fungi and viruses to evade known therapeutic agents used in treatment of infections. Aryldiketo acids (ADK) have shown antimicrobial activity against several resistant strains including Gram-positive Staphylococcus aureus bacteria. Our previous studies revealed that ADK analogues having bulky alkyl group in ortho position on a phenyl ring have up to ten times better activity than norfloxacin against the same strains. Rational modifications of analogues by introduction of hydrophobic substituents on the aromatic ring has led to more than tenfold increase in antibacterial activity against multidrug resistant Gram positive strains. To elucidate a potential mechanism of action for this potentially novel class of antimicrobials, several bacterial enzymes were identified as putative targets according to literature data and pharmacophoric similarity searches for potent ADK analogues. Among the seven bacterial targets chosen, the strongest favorable binding interactions were observed between most active analogue and S. aureus dehydrosqualene synthase and DNA gyrase. Furthermore, the docking results in combination with literature data suggest that these novel molecules could also target several other bacterial enzymes, including prenyl-transferases and methionine aminopeptidase. These results and our statistically significant 3D QSAR model could be used to guide the further design of more potent derivatives as well as in virtual screening for novel antibacterial agents.
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Affiliation(s)
- Ilija N Cvijetić
- Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski trg 16, Belgrade, Serbia.
| | - Tatjana Ž Verbić
- Faculty of Chemistry, University of Belgrade, Studentski trg 16, Belgrade, Serbia
| | | | - Paul Stapleton
- UCL School of Pharmacy, University College London, London, UK
| | - Simon Gibbons
- UCL School of Pharmacy, University College London, London, UK
| | - Ivan O Juranić
- Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, University of Belgrade, Njegoševa 12, Belgrade, Serbia
| | - Branko J Drakulić
- Institute of Chemistry, Technology and Metallurgy, Department of Chemistry, University of Belgrade, Njegoševa 12, Belgrade, Serbia
| | - Mire Zloh
- University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK.
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104
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Cumming H, Rücker C. Octanol-Water Partition Coefficient Measurement by a Simple 1H NMR Method. ACS OMEGA 2017; 2:6244-6249. [PMID: 31457869 PMCID: PMC6644330 DOI: 10.1021/acsomega.7b01102] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/11/2017] [Indexed: 05/26/2023]
Abstract
We describe a simple miniature shake-flask method to measure the octanol-water partition coefficient of an organic compound. Partition between water and octanol is performed in an NMR tube; the aqueous phase is analyzed by 1H NMR spectroscopy using a benchtop low-field NMR instrument. Neither pre-equilibration of solvents nor isolation of the two phases is required. The procedure is fast and easy enough to be used in a students' laboratory. Scope and limitations as well as possible sources of error are discussed in detail.
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Affiliation(s)
- Hemi Cumming
- School
of Chemical and Physical Sciences, Victoria
University of Wellington, P.O. Box 600, Wellington 6140, New Zealand
| | - Christoph Rücker
- Institute
for Sustainable and Environmental Chemistry, Leuphana University Lüneburg, Universitätsallee 1, 21335 Lüneburg, Germany
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105
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Blokhina SV, Volkova TV, Golubev VA, Perlovich GL. Understanding of Relationship between Phospholipid Membrane Permeability and Self-Diffusion Coefficients of Some Drugs and Biologically Active Compounds in Model Solvents. Mol Pharm 2017; 14:3381-3390. [DOI: 10.1021/acs.molpharmaceut.7b00401] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Svetlana V. Blokhina
- Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
| | - Tatyana V. Volkova
- Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
| | - Vasiliy A. Golubev
- Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
| | - German L. Perlovich
- Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russia
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106
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Paolucci V, Leriche G, Koyanagi T, Yang J. Evaluation of tetraether lipid-based liposomal carriers for encapsulation and retention of nucleoside-based drugs. Bioorg Med Chem Lett 2017; 27:4319-4322. [DOI: 10.1016/j.bmcl.2017.08.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/09/2017] [Accepted: 08/15/2017] [Indexed: 11/29/2022]
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107
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Grillo AS, SantaMaria AM, Kafina MD, Cioffi AG, Huston NC, Han M, Seo YA, Yien YY, Nardone C, Menon AV, Fan J, Svoboda DC, Anderson JB, Hong JD, Nicolau BG, Subedi K, Gewirth AA, Wessling-Resnick M, Kim J, Paw BH, Burke MD. Restored iron transport by a small molecule promotes absorption and hemoglobinization in animals. Science 2017; 356:608-616. [PMID: 28495746 PMCID: PMC5470741 DOI: 10.1126/science.aah3862] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 11/30/2016] [Accepted: 03/21/2017] [Indexed: 12/15/2022]
Abstract
Multiple human diseases ensue from a hereditary or acquired deficiency of iron-transporting protein function that diminishes transmembrane iron flux in distinct sites and directions. Because other iron-transport proteins remain active, labile iron gradients build up across the corresponding protein-deficient membranes. Here we report that a small-molecule natural product, hinokitiol, can harness such gradients to restore iron transport into, within, and/or out of cells. The same compound promotes gut iron absorption in DMT1-deficient rats and ferroportin-deficient mice, as well as hemoglobinization in DMT1- and mitoferrin-deficient zebrafish. These findings illuminate a general mechanistic framework for small molecule-mediated site- and direction-selective restoration of iron transport. They also suggest that small molecules that partially mimic the function of missing protein transporters of iron, and possibly other ions, may have potential in treating human diseases.
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Affiliation(s)
- Anthony S Grillo
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Anna M SantaMaria
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Martin D Kafina
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Alexander G Cioffi
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Nicholas C Huston
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Murui Han
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA
| | - Young Ah Seo
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
| | - Yvette Y Yien
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Christopher Nardone
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Archita V Menon
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA
| | - James Fan
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Dillon C Svoboda
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jacob B Anderson
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - John D Hong
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Bruno G Nicolau
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Kiran Subedi
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Andrew A Gewirth
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Marianne Wessling-Resnick
- Department of Genetic and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA.
| | - Barry H Paw
- Division of Hematology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
- Division of Hematology-Oncology, Department of Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Martin D Burke
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
- Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Carle-Illinois College of Medicine, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
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108
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Ionic liquids for the passive sampling of sulfonamides from water-applicability and selectivity study. Anal Bioanal Chem 2017; 409:3951-3958. [PMID: 28401288 PMCID: PMC5437200 DOI: 10.1007/s00216-017-0342-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 03/17/2017] [Accepted: 03/27/2017] [Indexed: 11/25/2022]
Abstract
Ionic liquids (ILs) are new-generation, non-volatile solvents which are designable, and their structure may be specifically adjusted to the current application needs. Therefore, it is possible to create and apply ILs which efficiently and selectively extract various analytes from different matrices. It has already been examined that ILs may be applied as receiving phases in passive sampling for the long-term water monitoring of PAHs and pharmaceuticals in water. In this paper, the concept of passive sampling with ILs (PASSIL applied as receiving phases) was continued and developed using phosphonium-, imidazolium-, and morpholinium-cation-based ILs. The target group of analytes was pharmaceuticals which represent one of the most common categories of water contaminants. Fourteen-day-long extractions using various ILs were performed in stirred conditions at a constant temperature (20 °C). The best extraction efficiency was achieved for trihexyl(tetradecyl)phosphonium dicyanamide ([P666-14][N(CN)2]). For this preliminary calibration, the sampling rates were calculated for each sulfonamide. Once again, selectivity was observed in passive sampling using [P666-14][N(CN)2]. Therefore, PASSIL is seen as a very promising method for pharmaceutical monitoring in water.
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109
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Scherz LF, Abdel-Rahman EA, Ali SS, Schlüter AD, Abdel-Rahman MA. Design, synthesis and cytotoxic activity of water-soluble quinones with dibromo- p-benzoquinone cores and amino oligo(ethylene glycol) side chains against MCF-7 breast cancer cells. MEDCHEMCOMM 2017; 8:662-672. [PMID: 30108784 DOI: 10.1039/c6md00728g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 02/11/2017] [Indexed: 11/21/2022]
Abstract
A series of novel quinones was synthesized by reacting tetrabromo-p-benzoquinone with amino oligo(ethylene glycol) dendrons of generation numbers g = 0-2. According to the performed shake-flask experiments, their aqueous solubility (S = 18 mg l-1-1.6 g ml-1) and partition coefficients (log Poct/wat = 2.53-0.21) can be tuned in a wide range as a function of g. In vitro cytotoxicity assays of tetrabromo-p-benzoquinone and its derivatives against MCF-7 human breast cancer cells showed a concentration- and generation-specific biological activity with IC50-values as low as 0.8 μM. Further investigations revealed a considerable selectivity against cancer cells, as indicated by a weak cytotoxicity against human skin fibroblast cells (>80% survival) within the studied range of concentrations. The results demonstrate that these novel amino oligo(ethylene glycol) dendrons depict versatile tools to ameliorate physical and pharmacological characteristics of extremely hydrophobic molecules and make them susceptible to biological applications.
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Affiliation(s)
- Leon F Scherz
- Institute of Polymers , Department of Materials , ETH Zürich , 8093 Zürich , Switzerland
| | - Engy A Abdel-Rahman
- Pharmacology Department , Faculty of Medicine , Assiut University , 71515 Assiut , Egypt.,Center for Aging and Associated Diseases , Helmy Institute of Medical Science , Zewail City of Science and Technology , 12588 Giza , Egypt
| | - Sameh S Ali
- Center for Aging and Associated Diseases , Helmy Institute of Medical Science , Zewail City of Science and Technology , 12588 Giza , Egypt
| | - A Dieter Schlüter
- Institute of Polymers , Department of Materials , ETH Zürich , 8093 Zürich , Switzerland
| | - Mona A Abdel-Rahman
- Chemistry Department , Polymer Lab. 109 , Faculty of Science , Assiut University , 71516 Assiut , Egypt .
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110
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Approaches for the discovery of novel positron emission tomography radiotracers for brain imaging. Clin Transl Imaging 2017. [DOI: 10.1007/s40336-017-0221-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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111
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Zafrani Y, Yeffet D, Sod-Moriah G, Berliner A, Amir D, Marciano D, Gershonov E, Saphier S. Difluoromethyl Bioisostere: Examining the “Lipophilic Hydrogen Bond Donor” Concept. J Med Chem 2017; 60:797-804. [DOI: 10.1021/acs.jmedchem.6b01691] [Citation(s) in RCA: 300] [Impact Index Per Article: 42.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yossi Zafrani
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Dina Yeffet
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Gali Sod-Moriah
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Anat Berliner
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Dafna Amir
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Daniele Marciano
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Eytan Gershonov
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
| | - Sigal Saphier
- The Department of Organic
Chemistry, Israel Institute for Biological Research, Ness-Ziona 74100, Israel
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112
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Volkova TV, Terekhova IV, Silyukov OI, Proshin AN, Bauer-Brandl A, Perlovich GL. Towards the rational design of novel drugs based on solubility, partitioning/distribution, biomimetic permeability and biological activity exemplified by 1,2,4-thiadiazole derivatives. MEDCHEMCOMM 2017; 8:162-175. [PMID: 30108702 PMCID: PMC6072304 DOI: 10.1039/c6md00545d] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 10/26/2016] [Indexed: 01/23/2023]
Abstract
Novel 1,2,4-thiadiazole derivatives as potent neuroprotectors were synthesized and identified. Their ability to inhibit the glutamate stimulated Ca2+ uptake was investigated. The solubility of thiadiazoles was measured in a buffer solution (pH 7.4) at 298 K. The distribution coefficients in 1-octanol/buffer (pH 7.4) and 1-hexane/buffer (pH 7.4) immiscible phases as model systems imitating the gastrointestinal tract epithelium and the blood-brain barrier were determined. Permeation experiments the new Permeapad™ barrier using Franz diffusion cells were conducted and the apparent permeability coefficients were obtained. The influence of the compound structure on the physicochemical properties determining the bioavailability of drug-like substances was revealed. Solubility-permeability interplay has been assessed to evaluate potential bioavailability of the compounds studied.
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Affiliation(s)
- T V Volkova
- Department of Physical Chemistry of Drugs , Krestov's Institute of Solution Chemistry, Russian Academy of Sciences , 153045 Akademicheskaya str. 1 , Ivanovo , Russia .
| | - I V Terekhova
- Department of Physical Chemistry of Drugs , Krestov's Institute of Solution Chemistry, Russian Academy of Sciences , 153045 Akademicheskaya str. 1 , Ivanovo , Russia .
| | - O I Silyukov
- Department of Physical Chemistry of Drugs , Krestov's Institute of Solution Chemistry, Russian Academy of Sciences , 153045 Akademicheskaya str. 1 , Ivanovo , Russia .
| | - A N Proshin
- Institute of Physiologically Active Compounds , Russian Academy of Sciences , 142432 , Chernogolovka , Russia
| | - A Bauer-Brandl
- Department of Physics , Chemistry and Pharmacy , University of Southern Denmark , 5230 Odense M , Denmark
| | - G L Perlovich
- Department of Physical Chemistry of Drugs , Krestov's Institute of Solution Chemistry, Russian Academy of Sciences , 153045 Akademicheskaya str. 1 , Ivanovo , Russia .
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113
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Ràfols C, Subirats X, Rubio J, Rosés M, Bosch E. Lipophilicity of amphoteric and zwitterionic compounds: A comparative study of determination methods. Talanta 2017; 162:293-299. [DOI: 10.1016/j.talanta.2016.10.038] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 10/04/2016] [Accepted: 10/08/2016] [Indexed: 10/20/2022]
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114
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Rodríguez G, Nargoli J, López A, Moyna G, Álvarez G, Fernández M, Osorio-Martínez CA, González M, Cerecetto H. Synthesis and in vivo proof of concept of a BODIPY-based fluorescent probe as a tracer for biodistribution studies of a new anti-Chagas agent. RSC Adv 2017. [DOI: 10.1039/c6ra27851e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A BODIPY-fluorophore based probe (1-BODIPY) for compound 1 was developed and investigated for its potential as in vivo tracer.
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Affiliation(s)
- Gonzalo Rodríguez
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
| | - Javier Nargoli
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
| | - Andrés López
- Departamento de Química del Litoral
- Universidad de la República
- Paysandú 60000
- Uruguay
| | - Guillermo Moyna
- Departamento de Química del Litoral
- Universidad de la República
- Paysandú 60000
- Uruguay
| | - Guzmán Álvarez
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
| | - Marcelo Fernández
- Laboratorio de Experimentación Animal
- Centro de Investigaciones Nucleares
- Facultad de Ciencias
- Universidad de la República
- Uruguay
| | - Carlos A. Osorio-Martínez
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
| | - Mercedes González
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
| | - Hugo Cerecetto
- Grupo de Química Medicinal
- Laboratorio de Química Orgánica
- Instituto de Química Biológica
- Facultad de Ciencias
- Universidad de la República
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115
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Carayon C, Ghodbane A, Gibot L, Dumur R, Wang J, Saffon N, Rols MP, Solntsev KM, Fery-Forgues S. Conjugates of Benzoxazole and GFP Chromophore with Aggregation-Induced Enhanced Emission: Influence of the Chain Length on the Formation of Particles and on the Dye Uptake by Living Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6602-6612. [PMID: 27977082 DOI: 10.1002/smll.201602799] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 09/13/2016] [Indexed: 06/06/2023]
Abstract
Six conjugates of benzoxazole and green fluorescent protein chromophore that differ by the length of their alkyl chain (from C1 to C16) are investigated. They exhibit rigidofluorochromism and clear aggregation-induced emission enhancement (AIEE) behavior with emission in the orange-red that is specific to the solid state. A preparation method based on solvent exchange is used to prepare particles. The self-association properties of these molecules depend on the length of the alkyl chain. Microfibers, platelets, and rounded microparticles are successively obtained by increasing the chain length. The same method is used to prepare nanoparticles (NPs) that are fully characterized. In particular, homogeneous populations of stable NPs measuring around 70 nm are obtained with the analogs whose chains contain four to eight carbon atoms. The behavior with respect to living cells is also influenced by the nature of the compounds. Only the dyes with intermediate hydrophobicity are efficiently uptaken by both normal and tumor cells, and fluorescence only originates from dispersed dye molecules. There is no evidence for incorporation of NPs into cells. This work shows that small variations of the chemical structure must be taken into account for making the best use of AIEE compounds in view of precise applications.
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Affiliation(s)
- Chantal Carayon
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
| | | | - Laure Gibot
- Equipe de Biophysique Cellulaire, IPBS-CNRS UMR 5089, 205 route de Narbonne, BP 64182, F31077, Toulouse Cedex, France
| | - Rémy Dumur
- ITAV, USR 3505, CNRS-Université de Toulouse, F31106, Toulouse, France
| | - Jinhui Wang
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
| | - Nathalie Saffon
- Service Commun RX, Institut de Chimie de Toulouse, ICT- FR2599, Université Paul Sabatier, F31062, Toulouse Cedex 9, France
| | - Marie-Pierre Rols
- Equipe de Biophysique Cellulaire, IPBS-CNRS UMR 5089, 205 route de Narbonne, BP 64182, F31077, Toulouse Cedex, France
| | - Kyril M Solntsev
- School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlantic Drive, Atlanta, GA, 30332-0400, USA
- Olis Inc., 130 Conway Dr, Bogart, GA, 30622, USA
| | - Suzanne Fery-Forgues
- SPCMIB, UMR5068, CNRS-Université Paul Sabatier-Toulouse III, 118 route de Narbonne, F31062, Toulouse, France
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116
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Kumar SV, Scottwell SØ, Waugh E, McAdam CJ, Hanton LR, Brooks HJL, Crowley JD. Antimicrobial Properties of Tris(homoleptic) Ruthenium(II) 2-Pyridyl-1,2,3-triazole “Click” Complexes against Pathogenic Bacteria, Including Methicillin-Resistant Staphylococcus aureus (MRSA). Inorg Chem 2016; 55:9767-9777. [DOI: 10.1021/acs.inorgchem.6b01574] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Sreedhar V. Kumar
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Synøve Ø. Scottwell
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Emily Waugh
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - C. John McAdam
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Lyall R. Hanton
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
| | - Heather J. L. Brooks
- Department
of Microbiology and Immunology, Otago School of Medical Sciences, University of Otago, PO Box 56, Dunedin, New Zealand
| | - James D. Crowley
- Department
of Chemistry, University of Otago, PO Box 56, Dunedin, New Zealand
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117
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Optimised method to estimate octanol water distribution coefficient (logD) in a high throughput format. Eur J Pharm Sci 2016; 92:110-6. [DOI: 10.1016/j.ejps.2016.06.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 06/10/2016] [Accepted: 06/28/2016] [Indexed: 11/22/2022]
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118
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Soulié M, Carayon C, Saffon N, Blanc S, Fery-Forgues S. A comparative study of nine berberine salts in the solid state: optimization of the photoluminescence and self-association properties through the choice of the anion. Phys Chem Chem Phys 2016; 18:29999-30008. [DOI: 10.1039/c6cp05848e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Counter-ions regulate the photoluminescence and self-association properties of berberine salts.
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Affiliation(s)
| | - Chantal Carayon
- SPCMIB
- UMR5068
- CNRS-Université Paul Sabatier-Toulouse III
- F31062 Toulouse cedex 9
- France
| | - Nathalie Saffon
- Service commun RX
- Institut de Chimie de Toulouse
- ICT-FR2599
- Université de Toulouse
- F31062 Toulouse
| | - Sylvie Blanc
- Université de Pau et des Pays de l'Adour
- IPREM-UMR CNRS 5254
- F64053 Pau cedex 9
- France
| | - Suzanne Fery-Forgues
- SPCMIB
- UMR5068
- CNRS-Université Paul Sabatier-Toulouse III
- F31062 Toulouse cedex 9
- France
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119
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Subirats X, Rosés M, Bosch E. High-throughput logPo/w determination from UHPLC measurements: Revisiting the chromatographic hydrophobicity index. J Pharm Biomed Anal 2015; 127:26-31. [PMID: 26732880 DOI: 10.1016/j.jpba.2015.12.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/10/2015] [Accepted: 12/11/2015] [Indexed: 10/22/2022]
Abstract
A fast and accurate lipophilicity determination is fundamental in the drug discovery process, as long as it is a relevant property in the absorption, distribution, metabolism, excretion and toxicity (ADMET) of a potential drug substance. In the present work, different models based on chromatographic retention values for a large set of compounds and some of their molecular descriptors (calculated by ACD/Labs or CODESSA programs) have been examined in order to establish reliable equations for logPo/w determination from fast chromatographic hydrophobicity index (CHI) measurements. This appears to be a very interesting high-throughput methodology for screening purposes, since CHI values can be measured by UHPLC in very short runs (<4min) and molecular descriptors can be easily computed from the structure of any compound. The selected final descriptors were Abraham's hydrogen-bond acidity (A) and excess molar refraction (E) from ACD/Labs, and hydrogen-bond acidity HDCA-1/TMSA and HOMO-LUMO polarizability descriptors from CODESSA software. The proposed equations allow an accurate determination of logPo/w with standard errors in the range of 0.4 units.
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Affiliation(s)
- Xavier Subirats
- Departament de Química Analítica-Institut de Biomedicina, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Martí Rosés
- Departament de Química Analítica-Institut de Biomedicina, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Elisabeth Bosch
- Departament de Química Analítica-Institut de Biomedicina, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain.
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120
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Kalicharan RW, Schot P, Vromans H. Fundamental understanding of drug absorption from a parenteral oil depot. Eur J Pharm Sci 2015; 83:19-27. [PMID: 26690043 DOI: 10.1016/j.ejps.2015.12.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 12/07/2015] [Indexed: 11/27/2022]
Abstract
Oil depots are parenteral drug formulations meant for sustained release of lipophilic compounds. Until now, a comprehensive understanding of the mechanism of drug absorption from oil depots is lacking. The aim of this paper was to fill this gap. A clinical study with healthy volunteers was conducted. An oil depot with nandrolone decanoate and benzyl alcohol was subcutaneously administered in the upper arm of female volunteers. Pharmacokinetic profiles of both substances were related to each other and to literature data. Benzyl alcohol absorbs much more rapidly than nandrolone. In detail, it appears that benzyl alcohol enters the central compartment directly, while nandrolone decanoate is recovered in serum after a lag time. This lag time is also seen in literature data, although not reported explicitly. The absorption of nandrolone is enhanced by the presence of benzyl alcohol. This is most likely an effect of altered oil viscosity and partition coefficient between the oil and aqueous phase. The absorption rate constant of compounds is found to be related to the logP of the solubilized prodrug. The absorption rate is however not only determined by the physico-chemical properties of the formulation but also by the tissue properties. Here, it is argued that lymphatic flow must be considered as a relevant parameter.
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Affiliation(s)
- Raween W Kalicharan
- Department of Clinical Pharmacy, Division of Laboratory & Pharmacy, University Medical Centre Utrecht, P/O Box 85500, 3508 GA Utrecht, The Netherlands; Department of Pharmaceutics, UIPS, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands.
| | - Peter Schot
- OrgaNext Research BV, Jansbuitensingel 7, 6811 AA Arnhem, The Netherlands
| | - Herman Vromans
- Department of Clinical Pharmacy, Division of Laboratory & Pharmacy, University Medical Centre Utrecht, P/O Box 85500, 3508 GA Utrecht, The Netherlands; Department of Pharmaceutics, UIPS, Utrecht University, PO Box 80082, 3508 TB Utrecht, The Netherlands
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