1
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Zhang T, Chen M, Guo L, Yu F, Zhou C, Xu H, Wu B. Reverse Erythroblastosis Virus α Antagonism Promotes Homocysteine Catabolism and Ammonia Clearance. Hepatology 2019; 70:1770-1784. [PMID: 31016736 DOI: 10.1002/hep.30675] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/17/2019] [Indexed: 12/21/2022]
Abstract
Metabolic homeostasis of amino acids is essential for human health. Here, we aimed to investigate a potential role for the clock component reverse erythroblastosis virus α (Rev-erbα) in circadian regulation of amino acid metabolism. RNA-seq with Rev-erbα-/- mice showed expression changes in genes involved in amino acid metabolism, particularly, the urea cycle and methionine metabolism. Rev-erbα ablation increased hepatic mRNA, protein, and enzymatic activity of betaine homocysteine methyltransferase (Bhmt), cystathionine β-synthase (Cbs), and cystathionine γ-lyase (Cth) and decreased the levels of plasma and liver homocysteine in mice. Cell-based assays confirmed negative regulation of these three genes by Rev-erbα. Combined luciferase reporter, mobility-shift, and chromatin immunoprecipitation assays identified Rev-erbα as a transcriptional repressor of Bhmt, Cbs, and Cth. Rev-erbα ablation or antagonism alleviated chemical-induced hyperhomocysteinemia in mice. This was accompanied by elevated expressions of Bhmt, Cbs, and Cth. Moreover, Rev-erbα ablation or antagonism promoted urea production and ammonia clearance. Of urea cycle-related genes, arginase 1 (Arg1), ornithine transcarbamylase (Otc), and carbamoyl-phosphate synthase 1 (Cps1) expressions were up-regulated in Rev-erbα-/- mice. Negative regulation of these urea cycle genes by Rev-erbα was validated using cell-based experiments. Mechanistic studies revealed that Rev-erbα inhibited CCAAT-enhancer-binding protein α transactivation to repress the transcription of Arg1, Cps1, and Otc. Conclusion: Rev-erbα antagonism alleviates hyperhomocysteinemia and promotes ammonia clearance. Targeting Rev-erbα represents an approach for the management of homocysteine- and ammonia-related diseases.
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Affiliation(s)
- Tianpeng Zhang
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China.,Integrated Chinese and Western Medicine Postdoctoral Research Station, Jinan University, Guangzhou, China
| | - Min Chen
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Lianxia Guo
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Fangjun Yu
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Cui Zhou
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Haiman Xu
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Baojian Wu
- Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University, Guangzhou, China
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Rashid MM, Oh HA, Lee H, Jung BH. Metabolite identification of AZD8055 in Sprague-Dawley rats after a single oral administration using ultra-performance liquid chromatography and mass spectrometry. J Pharm Biomed Anal 2017; 145:473-481. [DOI: 10.1016/j.jpba.2017.06.059] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 06/23/2017] [Accepted: 06/27/2017] [Indexed: 01/08/2023]
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3
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Wang MY, Yang M, Hou PY, Chen XB, Li HG, Yan JX, Zhang J, Zhang YW, Wu XH. Intestinal absorption of pallidifloside D are limited by P-glycoprotein in mice. Xenobiotica 2017; 48:739-744. [DOI: 10.1080/00498254.2017.1355999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ming-Yu Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
- Department of Emergency, Tianjin Central Hospital of Obstetrics and Gynecology, Tianjin, China, and
| | - Ming Yang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
- Department of Anesthesia, Tianjin Eye Hospital, Tianjin, China
| | - Pi-Yong Hou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Xiu-Bo Chen
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Hong-Gang Li
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Jiu-Xing Yan
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Jun Zhang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Yan-Wen Zhang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
| | - Xiao-Hui Wu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical, Therapeutics and Diagnostics, College of Pharmacy, Tianjin Medical University, Tianjin, China,
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Yin J, Xiang C, Wang P, Yin Y, Hou Y. Biocompatible nanoemulsions based on hemp oil and less surfactants for oral delivery of baicalein with enhanced bioavailability. Int J Nanomedicine 2017; 12:2923-2931. [PMID: 28435268 PMCID: PMC5391827 DOI: 10.2147/ijn.s131167] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Baicalein (BCL) possesses high pharmacological activities but low solubility and stability in the intestinal tract. This study aimed to probe the potential of nanoemulsions (NEs) consisting of hemp oil and less surfactants in ameliorating the oral bioavailability of BCL. BCL-loaded NEs (BCL-NEs) were prepared by high-pressure homogenization technique to reduce the amount of surfactants. BCL-NEs were characterized by particle size, entrapment efficiency (EE), in vitro drug release, and morphology. Bioavailability was studied in Sprague-Dawley rats following oral administration of BCL suspensions, BCL conventional emulsions, and BCL-NEs. The obtained NEs were ~90 nm in particle size with an EE of 99.31%. BCL-NEs significantly enhanced the oral bioavailability of BCL, up to 524.7% and 242.1% relative to the suspensions and conventional emulsions, respectively. BCL-NEs exhibited excellent intestinal permeability and transcellular transport ability. The cytotoxicity of BCL-NEs was documented to be low and acceptable for oral purpose. Our findings suggest that such novel NEs and preparative process provide a promising alternative to current formulation technologies and suitable for oral delivery of drugs with bioavailability issues.
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Affiliation(s)
- Juntao Yin
- Department of Pharmaceutics, Huaihe Hospital Affiliated to Henan University, Kaifeng
| | - Cuiyu Xiang
- Department of Pharmaceutics, Huaihe Hospital Affiliated to Henan University, Kaifeng
| | - Peiqing Wang
- Department of Pharmaceutics, Huaihe Hospital Affiliated to Henan University, Kaifeng
| | - Yuyun Yin
- Department of Physiochemical Analysis, Henan Provincial Institute for Food and Drug Control, Zhengzhou
| | - Yantao Hou
- Department of Pharmaceutical Engineering, Henan Vocational College of Applied Technology, Kaifeng, People's Republic of China
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Dong D, Quan E, Yuan X, Xie Q, Li Z, Wu B. Sodium Oleate-Based Nanoemulsion Enhances Oral Absorption of Chrysin through Inhibition of UGT-Mediated Metabolism. Mol Pharm 2016; 14:2864-2874. [DOI: 10.1021/acs.molpharmaceut.6b00851] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Dong Dong
- International
Ocular Surface Research Center and Institute of Ophthalmology, Jinan University Medical School, Guangzhou, China
| | - Enxi Quan
- Division
of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Xue Yuan
- Division
of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Qian Xie
- Division
of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China
| | - Zhijie Li
- International
Ocular Surface Research Center and Institute of Ophthalmology, Jinan University Medical School, Guangzhou, China
| | - Baojian Wu
- Division
of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China
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Hu Y, Wang Z, Huang X, Xia B, Tang L, Zheng Z, Ye L. Oxidative metabolism of koumine is mainly catalyzed by microsomal CYP3A4/3A5. Xenobiotica 2016; 47:584-591. [PMID: 27499416 DOI: 10.1080/00498254.2016.1213925] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. Gelsemium elegans Benth (Loganiaceae) is a toxic plant that can be used for committing suicide besides alleviating pains. Its anti-inflammatory and analgesic effect mainly come from its active ingredient, namely koumine. Koumine, an indole alkaloid, possesses widely pharmacological effects especially inhibition of neuropathic pain. 2. This study aimed to investigate the metabolic profile of koumine using human liver microsomes (HLMs), selective chemical inhibitors and recombinant human CYP isoforms. Ultra-performance liquid chromatography-high-resolution mass spectrometry (UPLC-HRMS) was used to detect and identify metabolites. 3. Four major metabolites of koumine were found after incubation with HLMs or individual CYP isoforms. The metabolic pathways of koumine included demethylation, dehydrogenation, oxidation and demethyl-dehydrogenation. Chemical inhibition study showed that the inhibitor of CYP3A4/3A5 significantly decreased (93%) the formation of koumine metabolites. Further, CYP3A4/3A5 was shown as the most efficient isoform in biotransformation of koumine, among a series of CYP isoforms tested. 4. In conclusion, koumine was metabolized into four oxidative metabolites in HLMs. And CYP3A4/3A5 was probably the main contributor to the hepatic oxidative metabolism of koumine.
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Affiliation(s)
- Yanxian Hu
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
| | - Zhaoyu Wang
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
| | - Xin Huang
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
| | - Bijun Xia
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
| | - Lan Tang
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
| | - Zhijie Zheng
- b Department of Clinical Pharmacology , Guangdong General Hospital, Guangdong Academy of Medical Sciences , Guangzhou , China
| | - Ling Ye
- a Department of Pharmaceutics , Guangdong Provincial Key Laboratory of New Drug Screening, State Key Laboratory of Organ Failure Research, School of Pharmaceutical Sciences, Southern Medical University , Guangzhou , China and
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Li F, Wang S, Lu D, Wang Y, Dong D, Wu B. Identification of UDP-glucuronosyltransferases 1A1, 1A3 and 2B15 as the main contributors to glucuronidation of bakuchiol, a natural biologically active compound. Xenobiotica 2016; 47:369-375. [PMID: 27314830 DOI: 10.1080/00498254.2016.1195523] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. Bakuchiol, one of the main active compounds of Psoralea corylifolia, possesses a variety of pharmacological activities such as anti-tumor and anti-aging effects. Here, we aimed to characterize the glucuronidation of bakuchiol using human liver microsomes (HLM) and expressed UDP-glucuronosyltransferase (UGT) enzymes. 2. The glucuronide of bakuchiol was confirmed by liquid chromatography-mass spectrometry (LC-MS) and β-glucuronidase hydrolysis assay. Glucuronidation rates and kinetic parameters were derived by enzymatic incubation and model fitting. Activity correlation analyses were performed to identify the main UGT isoforms contributing to hepatic metabolism of bakuchiol. 3. Among the three UGT enzymes (i.e., UGT1A1, UGT1A3 and UGT2B15) capable of catalyzing bakuchiol glucuronidation, UGT2B15 showed the highest activity with a CLint value of 100 μl/min/nmol. Bakuchiol glucuronidation was strongly correlated with glucuronidation of 5-hydroxyrofecoxib (r = 0.933; p < 0.001), 3-O-glucuronidation of β-estradiol (r = 0.719; p < 0.01) and significantly correlated with 24-O-glucuronidation of CDCA (r = 0.594; p < 0.05). In addition, a marked species difference existed in hepatic glucuronidation of bakuchiol. 4. In conclusion, UGT1A1, UGT1A3 and UGT2B15 were identified as the main contributors to glucuronidation of bakuchiol.
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Affiliation(s)
- Feng Li
- a Guangzhou Jinan Biomedicine Research and Development Center, Jinan University , Guangzhou , China
| | - Shuai Wang
- b Division of Pharmaceutics , College of Pharmacy, Jinan University , Guangzhou , China , and
| | - Danyi Lu
- b Division of Pharmaceutics , College of Pharmacy, Jinan University , Guangzhou , China , and
| | - Yifei Wang
- a Guangzhou Jinan Biomedicine Research and Development Center, Jinan University , Guangzhou , China
| | - Dong Dong
- c Ocular Surface Research Center and Institute of Ophthalmology, Jinan University School of Medicine , Guangzhou , China
| | - Baojian Wu
- b Division of Pharmaceutics , College of Pharmacy, Jinan University , Guangzhou , China , and
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Dong D, Zhang T, Lu D, Liu J, Wu B. In vitro characterization of belinostat glucuronidation: demonstration of both UGT1A1 and UGT2B7 as the main contributing isozymes. Xenobiotica 2016; 47:277-283. [PMID: 27180825 DOI: 10.1080/00498254.2016.1183061] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. Belinostat is a histone deacetylase inhibitor that has been approved for the treatment of peripheral T-cell lymphoma. This study aimed to identify the UDP-glucuronosyltransferase (UGT) enzymes responsible for belinostat glucuronidation through kinetic determination using recombinant enzymes with determined enzyme concentrations. 2. The rate of glucuronidation was determined by incubation of belinostat with enzyme preparations. Kinetic parameters such as Km and Vmax were derived by fitting an appropriate model to the glucuronidation data. The role of active UGT enzymes to belinostat metabolism was evaluated using inhibition experiments and activity correlation analyses. 3. Human liver microsomes generated a glucuronide metabolite (i.e. belinostat glucuronide) from belinostat. The glucuronide structure was confirmed by high-resolution mass spectrometry as well as the fragmentation pattern. Of 12 test UGT enzymes, only four (UGT1A1, 1A3, 2B4, and 2B7) showed metabolic activities toward belinostat. UGT1A1 was the most active enzyme, followed by UGT2B7, 1A3, and 2B4. Kinetic profiles for UGT1A1, 1A3, 2B4, and 2B7 were well described by Michaelis-Menten, Michaelis-Menten, Hill equation, and substrate inhibition equation, respectively. 4. Glucuronidation of belinostat was markedly inhibited by emodin and apigenin (two potent inhibitors of UGT1A1), and by quinidine and diclofenac sodium (two selective inhibitors of UGT2B7). Belinostat glucuronidation was found to be significantly correlated with β-estradiol 3-O-glucuronidation and zidovudine glucuronidation. 5. It was concluded that in addition to UGT1A1, UGT2B7 was also an important contributor to belinostat glucuronidation.
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Affiliation(s)
- Dong Dong
- a Ocular Surface Research Center and Institute of Ophthalmology, Jinan University School of Medicine , Guangzhou , China
| | - Tianpeng Zhang
- b Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University , Guangzhou , China , and
| | - Danyi Lu
- b Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University , Guangzhou , China , and
| | - Jie Liu
- c Department of Pharmacy , The Third Affiliated Hospital of Sun Yat-Sen University , Guangzhou , China
| | - Baojian Wu
- b Research Center for Biopharmaceutics and Pharmacokinetics, College of Pharmacy, Jinan University , Guangzhou , China , and
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Lu D, Dong D, Liu Z, Wang Y, Wu B. Metabolism elucidation of BJ-B11 (a heat shock protein 90 inhibitor) by human liver microsomes: identification of main contributing enzymes. Expert Opin Drug Metab Toxicol 2016; 11:1029-40. [PMID: 26073578 DOI: 10.1517/17425255.2015.1042858] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE The aim of this article is to elucidate the metabolic pathways of BJ-B11, a heat shock protein 90 inhibitor, in human liver microsomes (HLM) and determine the main enzymes responsible for formation of each metabolite. METHODS Metabolites of BJ-B11 were identified using the ultra performance liquid chromatography- quadrupole time-of-flight/mass spectrometry (UPLC-QTOF/MS) method. Esterase contributing to the hydrolysis of BJ-B11 was identified by chemical inhibition and activity correlation assays. Reaction phenotyping and kinetic studies using expressed cytochrome P450 (CYP) enzymes were performed to determine the contributions of CYP isozymes to BJ-B11 metabolism. RESULTS BJ-B11 was rapidly hydrolyzed to generate a deacetylated product M1-1. M1-1 was subsequently metabolized to form eight metabolites. Hydrolysis of BJ-B11 was markedly inhibited by vinblastine (a dual inhibitor of arylacetamide deacetylase and carboxylesterase 2). By contrast, digitonin and telmisartan (the specific inhibitors for carboxylesterase 1 and carboxylesterase 2, respectively) did not inhibit BJ-B11 hydrolysis at all. Further, BJ-B11 hydrolysis was significantly correlated with hydrolysis of phenacetin (an activity marker of arylacetamide deacetylase). Moreover, reaction phenotyping revealed that metabolism of M1-1 in HLM was attributable to several CYP enzymes, including CYP1A1, 1B1, 3A4 and 3A5. CONCLUSION BJ-B11 was subjected to efficient metabolism in the liver, generating nine metabolites. BJ-B11 metabolism was contributed mainly by arylacetamide deacetylase and multiple CYP enzymes.
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Affiliation(s)
- Danyi Lu
- Jinan University, Division of Pharmaceutics, College of Pharmacy , 601 Huangpu Avenue West, Guangzhou 510632 , China
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Li W, Zhang T, Ye Y, Zhang X, Wu B. Enhanced bioavailability of tripterine through lipid nanoparticles using broccoli-derived lipids as a carrier material. Int J Pharm 2015; 495:948-55. [PMID: 26453780 DOI: 10.1016/j.ijpharm.2015.10.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 09/20/2015] [Accepted: 10/03/2015] [Indexed: 11/18/2022]
Abstract
Chemotherapy via the oral route remains a considerable challenge due to poor water-solubility and permeability of anticancer agents. This study aimed to construct lipid nanoparticles using broccoli-derived lipids for oral delivery of tripterine (Tri), a natural anticancer candidate, and to enhance its oral bioavailability. Tri-loaded broccoli lipid nanoparticles (Tri-BLNs) were prepared by a solvent-diffusion method. The resulting Tri-BLNs were 75±10 nm in particle size with entrapment efficiency over 98%. In vitro release study indicated that Tri was almost not released from Tri-BLNs (<2%), whereas the lipolytic experiment showed that Tri-BLNs possessed a relatively strong anti-enzymatic degradation ability to Tri-CLNs (Tri-loaded common lipid nanoparticles). In situ single-pass intestinal perfusion manifested that the effective permeability of Tri-BLNs were significantly higher than that of Tri-CLNs. Further, Tri-BLNs exhibited more efficient cellular uptake in MDCK-II cells as evidenced by flow cytometry and confocal microscopy. The relative bioavailability of Tri-BLNs and Tri-CLNs was 494.13% and 281.95% compared with Tri suspensions, respectively. Depending on the ability in enhancement of biomembrane permeability, broccoli-derived lipids as an alternative source should be useful to construct lipid nanoparticles for bettering oral delivery of drugs with low bioavailability.
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Affiliation(s)
- Wan Li
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 West Huangpu Avenue, Guangzhou 510632, PR China
| | - Tianpeng Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 West Huangpu Avenue, Guangzhou 510632, PR China
| | - Yanghuan Ye
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 West Huangpu Avenue, Guangzhou 510632, PR China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 West Huangpu Avenue, Guangzhou 510632, PR China.
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, 601 West Huangpu Avenue, Guangzhou 510632, PR China.
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Zhang T, Wang H, Ye Y, Zhang X, Wu B. Micellar emulsions composed of mPEG-PCL/MCT as novel nanocarriers for systemic delivery of genistein: a comparative study with micelles. Int J Nanomedicine 2015; 10:6175-84. [PMID: 26491290 PMCID: PMC4598212 DOI: 10.2147/ijn.s91348] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Polymeric micelles receive considerable attention as drug delivery vehicles, depending on the versatility in drug solubilization and targeting therapy. However, their use invariably suffers with poor stability both in in vitro and in vivo conditions. Here, we aimed to develop a novel nanocarrier (micellar emulsions, MEs) for a systemic delivery of genistein (Gen), a poorly soluble anticancer agent. Gen-loaded MEs (Gen-MEs) were prepared from methoxy poly(ethylene glycol)-block-(ε-caprolactone) and medium-chain triglycerides (MCT) by solvent-diffusion technique. Nanocarriers were characterized by dynamic light scattering, transmission electron microscopy, and in vitro release. The resulting Gen-MEs were approximately 46 nm in particle size with a narrow distribution. Gen-MEs produced a different in vitro release profile from the counterpart of Gen-ME. The incorporation of MCT significantly enhanced the stability of nanoparticles against dilution with simulated body fluid. Pharmacokinetic study revealed that MEs could notably extend the mean retention time of Gen, 1.57- and 7.38-fold as long as that of micelles and solution formulation, respectively, following intravenous injection. Furthermore, MEs markedly increased the elimination half-life (t1/2β) of Gen, which was 2.63-fold larger than that of Gen solution. Interestingly, Gen distribution in the liver and kidney for MEs group was significantly low relative to the micelle group in the first 2 hours, indicating less perfusion in such two tissues, which well accorded with the elongated mean retention time. Our findings suggested that MEs may be promising carriers as an alternative of micelles to systemically deliver poorly soluble drugs.
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Affiliation(s)
- Tianpeng Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Huan Wang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Yanghuan Ye
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
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Zhang X, Zhang T, Ye Y, Chen H, Sun H, Zhou X, Ma Z, Wu B. Phospholipid-stabilized mesoporous carbon nanospheres as versatile carriers for systemic delivery of amphiphobic SNX-2112 (a Hsp90 inhibitor) with enhanced antitumor effect. Eur J Pharm Biopharm 2015; 94:30-41. [DOI: 10.1016/j.ejpb.2015.04.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 04/21/2015] [Accepted: 04/22/2015] [Indexed: 12/24/2022]
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Sun H, Ma Z, Lu D, Wu B. Regio- and Isoform-Specific Glucuronidation of Psoralidin: Evaluation of 3- O -Glucuronidation as a Functional Marker for UGT1A9. J Pharm Sci 2015; 104:2369-77. [DOI: 10.1002/jps.24464] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 03/17/2015] [Accepted: 04/08/2015] [Indexed: 01/05/2023]
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Sun H, Zhou X, Wu B. Accurate identification of UDP-glucuronosyltransferase 1A1 (UGT1A1) inhibitors using UGT1A1-overexpressing HeLa cells. Xenobiotica 2015; 45:945-53. [DOI: 10.3109/00498254.2015.1033502] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Lu D, Ma Z, Zhang T, Zhang X, Wu B. Metabolism of the anthelmintic drug niclosamide by cytochrome P450 enzymes and UDP-glucuronosyltransferases: metabolite elucidation and main contributions from CYP1A2 and UGT1A1. Xenobiotica 2015; 46:1-13. [DOI: 10.3109/00498254.2015.1047812] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Wu Z, Liu H, Wu B. Regioselective glucuronidation of gingerols by human liver microsomes and expressed UDP-glucuronosyltransferase enzymes: reaction kinetics and activity correlation analyses for UGT1A9 and UGT2B7. J Pharm Pharmacol 2015; 67:583-96. [PMID: 25496264 DOI: 10.1111/jphp.12351] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 10/05/2014] [Indexed: 01/02/2023]
Abstract
OBJECTIVES To determine the reaction kinetics for regioselective glucuronidation of gingerols (i.e. 6-, 8- and 10-gingerol) by human liver microsomes and expressed UDP-glucuronosyltransferase (UGT) enzymes, and to identify the main UGT enzymes involved in regioselective glucuronidation of gingerols. METHODS The rates of glucuronidation were determined by incubating the gingerols with uridine diphosphoglucuronic acid-supplemented microsomes. Kinetic parameters were derived by fitting an appropriate model to the data. Activity correlation analyses were performed to identify the main UGT enzymes contributing to hepatic metabolism of gingerols. KEY FINDINGS Glucuronidation at the 4'-OH group was much more favoured than that at 5-OH. The degree of position preference was compound-dependent; the catalytic efficiency ratios of 4'-O- to 5-O-glucuronidation were 9.1, 19.7 and 2.9 for 6-, 8- and 10-gingerol, respectively. UGT1A8 (an intestinal enzyme), UGT1A9 and UGT2B7 were the enzymes showing the highest activity towards gingerols. Formation of 5-O-glucuronide was mainly catalysed by UGT1A9. UGT2B7 was the only enzyme that generated glucuronides at both 4'-OH and 5-OH sites, although a strong position preference was observed with 4'-OH (≥80.2%). Further, activity correlation analyses indicated that UGT2B7 and UGT1A9 were primarily responsible for 4'-O-glucuronidation and 5-O-glucuronidation of gingerols in the liver, respectively. CONCLUSIONS Gingerols were metabolized by multiple hepatic and gastrointestinal UGT enzymes. Also, UGT1A9 and 2B7 were the main contributors to regioselective glucuronidation of gingerols in the liver.
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Affiliation(s)
- Zhufeng Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, China
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Dong D, Wang X, Wang H, Zhang X, Wang Y, Wu B. Elucidating the in vivo fate of nanocrystals using a physiologically based pharmacokinetic model: a case study with the anticancer agent SNX-2112. Int J Nanomedicine 2015; 10:2521-35. [PMID: 25848269 PMCID: PMC4386773 DOI: 10.2147/ijn.s79734] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Introduction SNX-2112 is a promising anticancer agent but has poor solubility in both water and oil. In the study reported here, we aimed to develop a nanocrystal formulation for SNX-2112 and to determine the pharmacokinetic behaviors of the prepared nanocrystals. Methods Nanocrystals of SNX-2112 were prepared using the wet-media milling technique and characterized by particle size, differential scanning calorimetry, drug release, etc. Physiologically based pharmacokinetic (PBPK) modeling was undertaken to evaluate the drug’s disposition in rats following administration of drug cosolvent or nanocrystals. Results The optimized SNX-2112 nanocrystals (with poloxamer 188 as the stabilizer) were 203 nm in size with a zeta potential of −11.6 mV. In addition, the nanocrystals showed a comparable release profile to the control (drug cosolvent). Further, the rat PBPK model incorporating the parameters of particulate uptake (into the liver and spleen) and of in vivo drug release was well fitted to the experimental data following administration of the drug nanocrystals. The results reveal that the nanocrystals rapidly released drug molecules in vivo, accounting for their cosolvent-like pharmacokinetic behaviors. Due to particulate uptake, drug accumulation in the liver and spleen was significant at the initial time points (within 1 hour). Conclusion The nanocrystals should be a good choice for the systemic delivery of the poorly soluble drug SNX-2112. Also, our study contributes to an improved understanding of the in vivo fate of nanocrystals.
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Affiliation(s)
- Dong Dong
- Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou, People's Republic of China
| | - Xiao Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou, People's Republic of China
| | - Huailing Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou, People's Republic of China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Yifei Wang
- Guangzhou Jinan Biomedicine Research and Development Center, Jinan University, Guangzhou, People's Republic of China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
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Zhang Y, Zhang X, Liu H, Cai S, Wu B. Mixed nanomicelles as potential carriers for systemic delivery of Z-GP-Dox, an FAPα-based doxorubicin prodrug: formulation and pharmacokinetic evaluation. Int J Nanomedicine 2015; 10:1625-36. [PMID: 25759584 PMCID: PMC4346364 DOI: 10.2147/ijn.s75954] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Z-GP-Dox, the FAPα (fibroblast activation protein-α)-based doxorubicin prodrug, demonstrates excellent tumor targeting effects and a favorable toxicokinetic profile. However, the insoluble nature of Z-GP-Dox becomes a significant barrier to drug administration, particularly when it comes to the clinical stage. Here we developed a nanomicelle system to facilitate the systemic delivery of Z-GP-Dox, and evaluated its disposition in rats following administration of the micelles using a physiologically-based pharmacokinetic model. Z-GP-Dox-loaded mixed nanomicelles (ZGD-MNs) were prepared by dispersion of an ethanol solution of Z-GP-Dox, lecithin, and sodium oleate in water. The obtained ZGD-MNs were 86.6 nm in size with a drug loading of 14.03%. ZGD-MNs were fairly stable in phosphate-buffered saline and showed satisfactory physical and chemical stability over a 2-week observation period. Accumulative drug release was more than 56% within 24 hours. Further, the physiologically-based pharmacokinetic rat model consisting of various organs (ie, heart, liver, spleen, lung, kidney, and intestine) was fitted to the experimental data following administration of ZGD-loaded cosolvent (control) or micelles. Derived partition coefficient values revealed that the nanomicelles significantly altered the biodistribution of Z-GP-Dox. Of note, drug distribution to the lung, liver, and spleen was greatly enhanced and the fold change ranged from 2.4 to 33. In conclusion, this is the first report of a mixed micelle system being a viable carrier for delivery of Z-GP-Dox. Also, the pharmacokinetic behavior of Z-GP-Dox was satisfactorily described by the physiologically-based pharmacokinetic model.
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Affiliation(s)
- Yuchen Zhang
- Department of Pharmacology, Jinan University, Guangzhou, People's Republic of China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Hongming Liu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
| | - Shaohui Cai
- Department of Pharmacology, Jinan University, Guangzhou, People's Republic of China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, People's Republic of China
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Zhou X, Zhang X, Ye Y, Zhang T, Wang H, Ma Z, Wu B. Nanostructured lipid carriers used for oral delivery of oridonin: an effect of ligand modification on absorption. Int J Pharm 2014; 479:391-8. [PMID: 25556104 DOI: 10.1016/j.ijpharm.2014.12.068] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/18/2014] [Accepted: 12/28/2014] [Indexed: 11/27/2022]
Abstract
Oridonin (Ori) is a natural compound with notable anti-inflammation and anti-cancer activities. However, therapeutic use of this compound is limited by its poor solubility and low bioavailability. Here a novel biotin-modified nanostructured lipid carrier (NLC) was developed to enhance the bioavailability of Ori. The effect of ligand (biotin) modification on oral absorption of Ori encapsulated in NLCs was also explored. Ori-loaded NLCs (Ori-NLCs) were prepared by the melt dispersion-high pressure homogenization method. Biotin modification of Ori-NLCs was achieved by EDC and NHS in aqueous phase. The obtained biotin-decorated Ori-NLCs (Bio-Ori-NLCs) were 144.9nm in size with an entrapment efficiency of 49.54% and a drug load of 4.81%. Oral bioavailability was enhanced by use of Bio-Ori-NLCs with a relative bioavailability of 171.01%, while the value of non-modified Ori-NLCs was improved to 143.48%. Intestinal perfusion showed that Ori solution unexpectedly exhibited a moderate permeability, indicating that permeability was not a limiting factor of Ori absorption. Ori could be rapidly metabolized that was the main cause of low bioavailability. However, there was a difference in the enhancement of bioavailability between Bio-Ori-NLCs and conventional NLCs. Although severe lipolyses happened both on Bio-Ori-NLCs and non-modified NLCs, the performance of Bio-Ori-NLCs in the bioavailability improvement was more significant. Overall, Bio-Ori-NLCs can further promote the oral absorption of Ori by a ligand-mediated active transport. It may be a promising carrier for the oral delivery of Ori.
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Affiliation(s)
- Xiaotong Zhou
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China
| | - Xingwang Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China.
| | - Yanghuan Ye
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China
| | - Tianpeng Zhang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China
| | - Huan Wang
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China
| | - Zhiguo Ma
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy, Jinan University, PR China.
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Sun H, Zhang T, Wu Z, Wu B. Warfarin is an effective modifier of multiple UDP-glucuronosyltransferase enzymes: evaluation of its potential to alter the pharmacokinetics of zidovudine. J Pharm Sci 2014; 104:244-56. [PMID: 25393417 DOI: 10.1002/jps.24250] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/01/2014] [Accepted: 10/17/2014] [Indexed: 12/23/2022]
Abstract
In this study, we aimed to determine the modulatory effects of warfarin (an extensively used anticoagulant drug) and its metabolites on UDP-glucuronosyltransferase (UGT) activity and to assess the potential of warfarin to alter the pharmacokinetics of zidovudine (AZT). The effects of warfarin and its metabolites on glucuronidation were determined using human and rat liver microsomes (HLM and RLM) as well as expressed UGTs. The mechanisms of warfarin-UGT interactions were explored through kinetic characterization and modeling. Pharmacokinetic studies with rats were performed to evaluate the potential of warfarin to alter the pharmacokinetics of AZT. We found that warfarin was an effective modifier of a panel of UGT enzymes. The effects of warfarin on glucuronidation were inhibitory for UGT1A1, 2B7, and 2B17, but activating for UGT1A3. Mixed effects were observed for UGT1A7 and 1A9. Consistent with its inhibitory effects on UGT2B7 activity, warfarin inhibited AZT glucuronidation in HLM (Ki = 74.9-96.3 μM) and RLM (Ki = 190-230 μM). Inhibition of AZT glucuronidation by UGT2B7, HLM, and RLM was also observed with several hydroxylated metabolites of warfarin. Moreover, the systemic exposure (AUC) of AZT in rats was increased by a 1.5- to 2.1-fold upon warfarin coadministration. The elevated AUC was associated with suppressed glucuronidation that was probably attained through a combined action of warfarin and its hydroxylated metabolites. In conclusion, the activities of multiple UGT enzymes can be modulated by warfarin and the nature of modulation was isoform dependent. Also, pharmacokinetic interactions of zidovudine with warfarin were highly possible through inhibition of UGT metabolism.
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Affiliation(s)
- Hua Sun
- Division of Pharmaceutics, College of Pharmacy, Jinan University, Guangzhou, 510632, China
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Sun H, Wang H, Liu H, Zhang X, Wu B. Glucuronidation of capsaicin by liver microsomes and expressed UGT enzymes: reaction kinetics, contribution of individual enzymes and marked species differences. Expert Opin Drug Metab Toxicol 2014; 10:1325-36. [DOI: 10.1517/17425255.2014.954548] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Liu H, Wu Z, Ma Z, Wu B. Glucuronidation of macelignan by human liver microsomes and expressed UGT enzymes: identification of UGT1A1 and 2B7 as the main contributing enzymes. Biopharm Drug Dispos 2014; 35:513-24. [PMID: 25099990 DOI: 10.1002/bdd.1914] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/22/2014] [Accepted: 07/30/2014] [Indexed: 01/14/2023]
Affiliation(s)
- Hongming Liu
- Division of Pharmaceutics, College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhufeng Wu
- Division of Pharmaceutics, College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 China
| | - Zhiguo Ma
- Division of Pharmaceutics, College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 China
| | - Baojian Wu
- Division of Pharmaceutics, College of Pharmacy; Jinan University; 601 Huangpu Avenue West Guangzhou 510632 China
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Fu J, Liu H, Xing H, Sun H, Ma Z, Wu B. Comparative analysis of glucuronidation of ethanol in treeshrews, rats and humans. Xenobiotica 2014; 44:1067-73. [DOI: 10.3109/00498254.2014.926573] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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