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Miyamoto Y, Nakatsuji M, Yoshida T, Ohkubo T, Inui T. Structural and interaction analysis of human lipocalin-type prostaglandin D synthase with the poorly water-soluble drug NBQX. FEBS J 2023; 290:3983-3996. [PMID: 37021622 DOI: 10.1111/febs.16791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/24/2023] [Accepted: 04/03/2023] [Indexed: 04/07/2023]
Abstract
Lipocalin-type prostaglandin D synthase (L-PGDS) is a secretory lipid-transporter protein that was shown to bind a wide variety of hydrophobic ligands in vitro. Exploiting this function, we previously examined the feasibility of using L-PGDS as a novel delivery vehicle for poorly water-soluble drugs. However, the mechanism by which human L-PGDS binds to poorly water-soluble drugs is unclear. In this study, we determined the solution structure of human L-PGDS and investigated the mechanism of L-PGDS binding to 6-nitro-7-sulfamoyl-benzo[f]quinoxalin-2,3-dione (NBQX), an α-amino-3-hydroxy-5-methyl-4-isoxazole-propionic acid receptor antagonist. NMR experiments showed that human L-PGDS has an eight-stranded antiparallel β-barrel structure that forms a central cavity, a short 310 -helix and two α-helices. Titration with NBQX was monitored using 1 H-15 N HSQC spectroscopy. At higher NBQX concentrations, some cross-peaks of the protein exhibited fast-exchanging shifts with a curvature, indicating at least two binding sites. These residues were located in the upper portion of the cavity. Singular value decomposition analysis revealed that human L-PGDS has two NBQX binding sites. Large chemical shift changes were observed in the H2-helix and A-, B-, C-, D-, H- and I-strands and H2-helix upon NBQX binding. Calorimetric experiments revealed that human L-PGDS binds two NBQX molecules with dissociation constants of 46.7 μm for primary binding and 185.0 μm for secondary binding. Molecular docking simulations indicated that these NBQX binding sites are located within the β-barrel. These results provide new insights into the interaction between poorly water-soluble drugs and human L-PGDS as a drug carrier.
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Affiliation(s)
- Yuya Miyamoto
- Laboratory of Biological Macromolecules, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
- Japan Society for the Promotion of Science, Chiyoda-ku, Japan
| | - Masatoshi Nakatsuji
- Laboratory of Biological Macromolecules, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
- Japan Society for the Promotion of Science, Chiyoda-ku, Japan
| | - Takuya Yoshida
- Laboratory of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Tadayasu Ohkubo
- Laboratory of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Takashi Inui
- Laboratory of Biological Macromolecules, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Japan
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Urade Y. Biochemical and Structural Characteristics, Gene Regulation, Physiological, Pathological and Clinical Features of Lipocalin-Type Prostaglandin D 2 Synthase as a Multifunctional Lipocalin. Front Physiol 2021; 12:718002. [PMID: 34744762 PMCID: PMC8569824 DOI: 10.3389/fphys.2021.718002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Lipocalin-type prostaglandin (PG) D2 synthase (L-PGDS) catalyzes the isomerization of PGH2, a common precursor of the two series of PGs, to produce PGD2. PGD2 stimulates three distinct types of G protein-coupled receptors: (1) D type of prostanoid (DP) receptors involved in the regulation of sleep, pain, food intake, and others; (2) chemoattractant receptor-homologous molecule expressed on T helper type 2 cells (CRTH2) receptors, in myelination of peripheral nervous system, adipocyte differentiation, inhibition of hair follicle neogenesis, and others; and (3) F type of prostanoid (FP) receptors, in dexamethasone-induced cardioprotection. L-PGDS is the same protein as β-trace, a major protein in human cerebrospinal fluid (CSF). L-PGDS exists in the central nervous system and male genital organs of various mammals, and human heart; and is secreted into the CSF, seminal plasma, and plasma, respectively. L-PGDS binds retinoic acids and retinal with high affinities (Kd < 100 nM) and diverse small lipophilic substances, such as thyroids, gangliosides, bilirubin and biliverdin, heme, NAD(P)H, and PGD2, acting as an extracellular carrier of these substances. L-PGDS also binds amyloid β peptides, prevents their fibril formation, and disaggregates amyloid β fibrils, acting as a major amyloid β chaperone in human CSF. Here, I summarize the recent progress of the research on PGD2 and L-PGDS, in terms of its “molecular properties,” “cell culture studies,” “animal experiments,” and “clinical studies,” all of which should help to understand the pathophysiological role of L-PGDS and inspire the future research of this multifunctional lipocalin.
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Affiliation(s)
- Yoshihiro Urade
- Center for Supporting Pharmaceutical Education, Daiichi University of Pharmacy, Fukuoka, Japan.,Isotope Science Center, The University of Tokyo, Tokyo, Japan
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Sou T, Bergström CAS. Automated assays for thermodynamic (equilibrium) solubility determination. DRUG DISCOVERY TODAY. TECHNOLOGIES 2018; 27:11-19. [PMID: 30103859 DOI: 10.1016/j.ddtec.2018.04.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/26/2018] [Accepted: 04/27/2018] [Indexed: 06/08/2023]
Abstract
Solubility is a crucial physicochemical property for drug candidates and is important in both drug discovery and development. Poor solubility is detrimental to absorption after oral administration and can mask compound activity in bioassays in various ways. Hence, solubility liabilities should ideally be identified as early as possible in the drug development process. With the increasing number of compounds as potential drug candidates, automated thermodynamic solubility assays for high throughput screening enabling rapid evaluation of a large number of compounds are becoming increasingly important. This review discusses the current status of the most widely used automated assays for thermodynamic solubility, followed by recent high throughput measurements of properties related to solubility (e.g. dissolution rate and supersaturation) and a brief overview of predictive computational methods for thermodynamic solubility reported in the literature.
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Affiliation(s)
- Tomás Sou
- Department of Pharmacy, Uppsala University, BMC P.O. Box 580, SE-751 23 Uppsala, Sweden
| | - Christel A S Bergström
- Department of Pharmacy, Uppsala University, BMC P.O. Box 580, SE-751 23 Uppsala, Sweden.
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Doi H, Kida T, Nishino K, Nakatsuji M, Sakamoto S, Shimizu S, Teraoka Y, Tamura Y, Kataoka Y, Inui T. Solubility-Improved 10-O
-Substituted SN-38 Derivatives with Antitumor Activity. ChemMedChem 2017; 12:1715-1722. [DOI: 10.1002/cmdc.201700454] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 09/04/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Hisashi Doi
- Labeling Chemistry Team, Division of Bio-Function Dynamics Imaging; RIKEN Center for Life Science Technologies, CLST; 6-7-3 Minatojima, minamimachi, Chuo-ku Kobe Hyogo 650-0047 Japan
| | - Tatsuya Kida
- Labeling Chemistry Team, Division of Bio-Function Dynamics Imaging; RIKEN Center for Life Science Technologies, CLST; 6-7-3 Minatojima, minamimachi, Chuo-ku Kobe Hyogo 650-0047 Japan
| | - Kosuke Nishino
- Labeling Chemistry Team, Division of Bio-Function Dynamics Imaging; RIKEN Center for Life Science Technologies, CLST; 6-7-3 Minatojima, minamimachi, Chuo-ku Kobe Hyogo 650-0047 Japan
| | - Masatoshi Nakatsuji
- Graduate School of Life and Environmental Science; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Shiho Sakamoto
- Graduate School of Life and Environmental Science; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Shota Shimizu
- Graduate School of Life and Environmental Science; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Yoshiaki Teraoka
- Graduate School of Life and Environmental Science; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Yasuhisa Tamura
- Cellular Function Imaging Team, Division of Bio-function Dynamics Imaging; RIKEN Center for Life Science Technologies, CLST; 6-7-3, Minatojima minamimachi, Chuo-ku Kobe Hyogo 650-0047 Japan
| | - Yosky Kataoka
- Cellular Function Imaging Team, Division of Bio-function Dynamics Imaging; RIKEN Center for Life Science Technologies, CLST; 6-7-3, Minatojima minamimachi, Chuo-ku Kobe Hyogo 650-0047 Japan
| | - Takashi Inui
- Graduate School of Life and Environmental Science; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
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Teraoka Y, Kume S, Lin Y, Atsuji S, Inui T. Comprehensive Evaluation of the Binding of Lipocalin-Type Prostaglandin D Synthase to Poorly Water-Soluble Drugs. Mol Pharm 2017; 14:3558-3567. [PMID: 28829147 DOI: 10.1021/acs.molpharmaceut.7b00590] [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] [Indexed: 11/28/2022]
Abstract
Low water solubility of candidate drug compounds is a major problem in pharmaceutical research and development. We developed a novel drug delivery system (DDS) for poorly water-soluble drugs using lipocalin-type prostaglandin D synthase (L-PGDS), which belongs to the lipocalin superfamily and binds a large variety of hydrophobic molecules. In this study, we comprehensively evaluated the capability of L-PGDS to bind and solubilize various poorly water-soluble drugs using structure-based docking. Docking simulations of 2892 commercially available approved drugs indicated that L-PGDS shows higher binding affinities for various drugs compared with 2-hydroxypropyl-β-cyclodextrin. Five drugs selected from the top 100 with the highest binding affinities for L-PGDS exhibited very low solubility in PBS (pH 7.4). However, in the presence of 1 mM L-PGDS, the apparent solubility of all drugs improved markedly, from 19.5- to 166-fold. Calorimetric experiments on two drugs, telmisartan and imatinib, revealed that L-PGDS forms a 1:2 complex with each drug, with dissociation constants of 0.4-40.0 μM. Kinetic simulations of drug dissolution with L-PGDS indicated that the difference in free energy change (ΔΔG) between the insoluble state and the L-PGDS-bound state are within the range from -10 to +5 kJ mol-1. The ΔΔG value is a critical factor in evaluating whether a poorly water-soluble drug can be solubilized by L-PGDS. Collectively, these results demonstrate that in silico docking is a promising approach for identifying drug molecules suitable for the L-PGDS-based DDS.
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Affiliation(s)
- Yoshiaki Teraoka
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.,Research Fellow of the Japan Society for the Promotion of Science , 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Satoshi Kume
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.,Cellular Function Imaging Team, Division of Bio-function Dynamics Imaging, RIKEN Center for Life Science Technologies , 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan.,Health Metrics Development Team, Integrated Research Group, RIKEN Compass to Healthy Life Research Complex Program, RIKEN Cluster for Science and Technology Hub , 6-7-1 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Yuxi Lin
- Cellular Function Imaging Team, Division of Bio-function Dynamics Imaging, RIKEN Center for Life Science Technologies , 6-7-3 Minatojima-minamimachi, Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Shogo Atsuji
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Takashi Inui
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
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Ribeiro SD, -->Rodrigues Filho G, Meneguin AB, Prezotti FG, Boni FI, Cury BSF, Gremião MPD. Cellulose triacetate films obtained from sugarcane bagasse: Evaluation as coating and mucoadhesive material for drug delivery systems. Carbohydr Polym 2016; 152:764-774. [DOI: 10.1016/j.carbpol.2016.07.069] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 07/09/2016] [Accepted: 07/17/2016] [Indexed: 11/29/2022]
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Mizoguchi M, Nakatsuji M, Takano J, Ishibashi O, Wada K, Inui T. Development of pH-Independent Drug Release Formulation Using Lipocalin-Type Prostaglandin D Synthase. J Pharm Sci 2016; 105:2735-2742. [PMID: 26886322 DOI: 10.1016/s0022-3549(15)00176-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 11/23/2015] [Indexed: 11/17/2022]
Abstract
The purpose of this study was to develop a pH-independent drug release formulation using lipocalin-type prostaglandin D synthase, a member of the lipocalin superfamily, with the function of forming complexes together with various small lipophilic molecules. Dipyridamole, a poorly water-soluble drug, showing a pH-dependent solubility profile, was used as the model drug. The solubilization of dipyridamole was achieved by a simple complex formulation method with lipocalin-type prostaglandin D synthase. The complex formulation was produced successfully by spray drying, and the obtained powder formulation showed complete dissolution in fasted-state simulated gastric fluid (pH, 1.6) and phosphate-buffered solution (pH, 6.8). In addition, the potential stability of the complex formulation was assessed, and the dissolution profile of the produced powder at pH 6.8 was maintained after 4-week storage under several storage conditions. Furthermore, a pharmacokinetic study using hypochlorhydria model rats was performed to verify the improvement of the intestinal absorption behavior, and eventually the complex formulation overcame the problematic absorption profile of dipyridamole in the elevated gastric pH conditions. These results, taken together, demonstrate that the use of this well-designed drug-delivery carrier is feasible for the development of pH-independent drug release formulations.
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Affiliation(s)
- Masashi Mizoguchi
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan; Department of Chemistry, Manufacturing and Control, Kobe Pharma Research Institute, Nippon Boehringer Ingelheim Co., Ltd., Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Masatoshi Nakatsuji
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Junichi Takano
- Department of Chemistry, Manufacturing and Control, Kobe Pharma Research Institute, Nippon Boehringer Ingelheim Co., Ltd., Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Osamu Ishibashi
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Koichi Wada
- Department of Chemistry, Manufacturing and Control, Kobe Pharma Research Institute, Nippon Boehringer Ingelheim Co., Ltd., Chuo-ku, Kobe, Hyogo 650-0047, Japan
| | - Takashi Inui
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
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Nakatsuji M, Inoue H, Kohno M, Saito M, Tsuge S, Shimizu S, Ishida A, Ishibashi O, Inui T. Human Lipocalin-Type Prostaglandin D Synthase-Based Drug Delivery System for Poorly Water-Soluble Anti-Cancer Drug SN-38. PLoS One 2015; 10:e0142206. [PMID: 26529243 PMCID: PMC4631600 DOI: 10.1371/journal.pone.0142206] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/19/2015] [Indexed: 01/18/2023] Open
Abstract
Lipocalin-type prostaglandin D synthase (L-PGDS) is a member of the lipocalin superfamily, which is composed of secretory transporter proteins, and binds a wide variety of small hydrophobic molecules. Using this function, we have reported the feasibility of using L-PGDS as a novel drug delivery vehicle for poorly water-soluble drugs. In this study, we show the development of a drug delivery system using L-PGDS, one that enables the direct clinical use of 7-ethyl-10-hydroxy-camptothecin (SN-38), a poorly water-soluble anti-cancer drug. In the presence of 2 mM L-PGDS, the concentration of SN-38 in PBS increased 1,130-fold as compared with that in PBS. Calorimetric experiments revealed that L-PGDS bound SN-38 at a molecular ratio of 1:3 with a dissociation constant value of 60 μM. The results of an in vitro growth inhibition assay revealed that the SN-38/L-PGDS complexes showed high anti-tumor activity against 3 human cancer cell lines, i.e., Colo201, MDA-MB-231, and PC-3 with a potency similar to that of SN-38 used alone. The intravenous administration of SN-38/L-PGDS complexes to mice bearing Colo201 tumors showed a pronounced anti-tumor effect. Intestinal mucositis, which is one of the side effects of this drug, was not observed in mice administered SN-38/L-PGDS complexes. Taken together, L-PGDS enables the direct usage of SN-38 with reduced side effects.
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Affiliation(s)
- Masatoshi Nakatsuji
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Haruka Inoue
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Masaki Kohno
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Mayu Saito
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Syogo Tsuge
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Shota Shimizu
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Atsuko Ishida
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Osamu Ishibashi
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
| | - Takashi Inui
- Department of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
- * E-mail:
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