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Wang Y, Cheng W, Zhu J, He L, Ren W, Bao D, Piao JG. Programmed Co-delivery of tamoxifen and docetaxel using lipid-coated mesoporous silica nanoparticles for overcoming CYP3A4-mediated resistance in triple-negative breast cancer treatment. Biomed Pharmacother 2024; 170:116084. [PMID: 38157645 DOI: 10.1016/j.biopha.2023.116084] [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: 10/12/2023] [Revised: 12/16/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024] Open
Abstract
PURPOSE This study aims to revolutionize the treatment of aggressive triple-negative breast cancer (TNBC), notorious for its resistance to standard therapies. By ingeniously combining Tamoxifen (TMX) and Docetaxel (DTX) within a lipid-coated mesoporous silica nanoparticle (LP-MSN) delivery system, we intend to enhance therapeutic efficacy while circumventing DTX resistance mediated by CYP3A4 expression. METHODS We rigorously tested TNBC cell lines to confirm the responsiveness to Docetaxel (DTX) and Tamoxifen (TMX). We adeptly engineered LP-MSN nanoparticles and conducted a thorough examination of the optimal drug release strategy, evaluating the LP-MSN system's ability to mitigate the impact of CYP3A4 on DTX. Additionally, we comprehensively analyzed its pharmacological performance. RESULTS Our innovative approach utilizing TMX and DTX within LP-MSN showcased remarkable efficacy. Sequential drug release from the lipid layer and mesoporous core curbed CYP3A4-mediated metabolism, substantially enhancing cytotoxic effects on TNBC cells without harming normal cells. CONCLUSION This pioneering research introduces a breakthrough strategy for tackling TNBC. By capitalizing on synergistic TMX and DTX effects via LP-MSN, we surmount drug resistance mediated by CYP3A4. This advancement holds immense potential for transforming TNBC treatment, warranting further clinical validation.
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Affiliation(s)
- Yinan Wang
- Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - WeiYi Cheng
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Jingjing Zhu
- Fuyang TCM Hospital of Orthopedics Affiliated to Zhejiang Chinese Medical University (Hangzhou Fuyang Hospital of Orthopedics of Traditional Chinese Medicine), Hangzhou 311400, China
| | - Li He
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - WeiYe Ren
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - Dandan Bao
- Department of Dermatology & Cosmetology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310006, China.
| | - Ji-Gang Piao
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
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Adar T, Shankar Lankalapalli R, Bittman R, Ilan Y. The assembly of glycosphingolipid determines their immunomodulatory effect: A novel method for structure-based design of immunotherapy. Cell Immunol 2020; 355:104157. [PMID: 32659503 DOI: 10.1016/j.cellimm.2020.104157] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 05/27/2020] [Accepted: 07/01/2020] [Indexed: 11/18/2022]
Abstract
Structure-activity relationships provide insight into the binding interactions of beta-glycosphingolipids (GSLs) with both the TCR and the CD1d molecules, as well as the subsequent immunologic response of regulatory NKT cells. AIM To determine the effects of synthetic GSL structures on their immune modulatory functions. METHODS GSLs of various structures were tested in vitro and in an animal model of Concanavalin A (ConA) immune-mediated hepatitis. RESULTS In vitro, using SV40 binding to live monkey CV1 cells, the l-threo stereoisomer of C8-β-LacCer inhibits caveolar internalization, reducing viral binding to the cell surface. In vivo, in the ConA model, LR172, which has a saturated C8 chain, and LR178, which has a trans double bond at C-2 in the C8 chain, suppressed the immune-mediated liver inflammation and reduced IFNγ levels in a dose dependent manner. The beneficial effects of LR172 and of LR178 are associated with suppression of liver apoptosis, increased phosphorylated STAT3 expression in the liver, and an increase in the NKT liver/spleen ratio. SUMMARY The assembly of GSLs determines their immunomodulatory effect and can serve as a method for structure-based design of immunotherapy.
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Affiliation(s)
- Tomer Adar
- Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel
| | - Ravi Shankar Lankalapalli
- Department of Chemistry & Biochemistry, Queens College of the City University of New York, United States; Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, Kerala, India
| | - Robert Bittman
- Department of Chemistry & Biochemistry, Queens College of the City University of New York, United States
| | - Yaron Ilan
- Department of Medicine, Hadassah Hebrew University Medical Center, Jerusalem, Israel.
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3
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Li H, Li J, He X, Zhang B, Liu C, Li Q, Zhu Y, Huang W, Zhang W, Qian H, Ge L. Histology and antitumor activity study of PTX-loaded micelle, a fluorescent drug delivery system prepared by PEG-TPP. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.01.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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4
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Cavanagh RJ, Smith PA, Stolnik S. Exposure to a Nonionic Surfactant Induces a Response Akin to Heat-Shock Apoptosis in Intestinal Epithelial Cells: Implications for Excipients Safety. Mol Pharm 2019; 16:618-631. [PMID: 30608696 DOI: 10.1021/acs.molpharmaceut.8b00934] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Amphipathic, nonionic, surfactants are widely used in pharmaceutical, food, and agricultural industry to enhance product features; as pharmaceutical excipients, they are also aimed at increasing cell membrane permeability and consequently improving oral drugs absorption. Here, we report on the concentration- and time-dependent succession of events occurring throughout and subsequent exposure of Caco-2 epithelium to a "typical" nonionic surfactant (Kolliphor HS15) to provide a molecular explanation for nonionic surfactant cytotoxicity. The study shows that the conditions of surfactant exposure, which increase plasma membrane fluidity and permeability, produced rapid (within 5 min) redox and mitochondrial effects. Apoptosis was triggered early during exposure (within 10 min) and relied upon an initial mitochondrial membrane hyperpolarization (5-10 min) as a crucial step, leading to its subsequent depolarization and caspase-3/7 activation (60 min). The apoptotic pathway appears to be triggered prior to substantial surfactant-induced membrane damage (observed ≥60 min). We hence propose that the cellular response to the model nonionic surfactant is triggered via surfactant-induced increase in plasma membrane fluidity, a phenomenon akin to the stress response to membrane fluidization induced by heat shock, and consequent apoptosis. Therefore, the fluidization effect that confers surfactants the ability to enhance drug permeability may also be intrinsically linked to the propagation of their cytotoxicity. The reported observations have important implications for the safety of a multitude of nonionic surfactants used in drug delivery formulations and to other permeability enhancing compounds with similar plasma membrane fluidizing mechanisms.
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Affiliation(s)
- Robert J Cavanagh
- Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham , Nottingham NG7 2RD , United Kingdom
| | - Paul A Smith
- School of Life Science , University of Nottingham , Nottingham NG7 2RD , United Kingdom
| | - Snow Stolnik
- Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham , Nottingham NG7 2RD , United Kingdom
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5
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Ruhl T, Storti G, Pallua N. Proliferation, Metabolic Activity, and Adipogenic Differentiation of Human Preadipocytes Exposed to 2 Surfactants In Vitro. J Pharm Sci 2018; 107:1408-1415. [DOI: 10.1016/j.xphs.2017.12.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 11/24/2017] [Accepted: 12/14/2017] [Indexed: 01/09/2023]
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6
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Jaisamut P, Wiwattanawongsa K, Graidist P, Sangsen Y, Wiwattanapatapee R. Enhanced Oral Bioavailability of Curcumin Using a Supersaturatable Self-Microemulsifying System Incorporating a Hydrophilic Polymer; In Vitro and In Vivo Investigations. AAPS PharmSciTech 2018; 19:730-740. [PMID: 28975598 DOI: 10.1208/s12249-017-0857-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Accepted: 08/08/2017] [Indexed: 11/30/2022] Open
Abstract
A supersaturatable self-microemulsifying drug delivery system (S-SMEDDS) with a reduced amount of surfactant and incorporation of a polymer precipitation inhibitor, Eudragit® E PO was developed. The optimized S-SMEDDS formulation (SS-15) consisted of 55% surfactants, 40% oils, and 5% Eudragit® E PO (curcumin at 44.4 mg/g of the formulation). The precipitation profiles from the supersaturation assay revealed that the curcumin S-SMEDDS performed as a better inhibitor of curcumin precipitation in simulated gastric fluid over a 240-min study than the normal curcumin SMEDDS and an aqueous curcumin suspension. In addition, the mean droplet size of the curcumin S-SMEDDS (21.6 ± 0.1 nm) was significantly smaller than the SMEDDS (28.1 ± 0.3 nm). The curcumin S-SMEDDS exhibited a threefold reduction of Caco-2 cell toxicity when compared to the curcumin SMEDDS because of the reduced toxic effect of the surfactant present in the SMEDDS formulation. In addition, the absorptive permeability across the Caco-2 monolayer of curcumin in the S-SMEDDS was significantly higher than for the unformulated curcumin (~ 5-folds). The plasma concentration-time profiles from the oral absorption studies in rats dosed with the curcumin S-SMEDDS showed a 1.22- and 53.14-fold increased absorption of curcumin, compared to the SMEDDS and the aqueous suspension, respectively. The curcumin S-SMEDDS was stable under both intermediate and accelerated conditions after 6 months of storage.
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7
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Nonami K, Saitoh S, Nishimura-Danjobara Y, Ishida S, Oyama Y. Chlorhexidine possesses unique cytotoxic actions in rat thymic lymphocytes: Its relation with electrochemical property of membranes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2016; 48:17-21. [PMID: 27716531 DOI: 10.1016/j.etap.2016.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Revised: 08/09/2016] [Accepted: 09/30/2016] [Indexed: 06/06/2023]
Abstract
Chlorhexidine (CHX) is an antibacterial agent used in various types of pharmaceutical products. Therefore, CHX is easily found around us. Owing to its positive charge, the electrochemical property of cell membranes was assumed to be a key point of cytotoxic action of CHX. Depolarization of membranes attenuated the cytotoxic action of CHX in rat thymic lymphocytes. CHX interfered with annexin V binding to membranes. Manipulations to induce exposure of phosphatidylserine on the outer membrane surface augmented the cytotoxic action of CHX, indicating that changes in the electrochemical property of membranes affected the cytotoxic action of CHX. Hence, CHX might kill cells physiologically undergoing apoptosis, resulting instead in necrotic cell death. However, the threshold CHX concentration in this in vitro study was slightly higher than blood CHX concentrations observed clinically. Therefore, these results may support the safety of CHX use although CHX possesses unique cytotoxic actions described in this study.
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Affiliation(s)
- Kayo Nonami
- Faculty of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - Shohei Saitoh
- Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | | | - Shiro Ishida
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8512, Japan
| | - Yasuo Oyama
- Faculty of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, Tokushima 770-8513, Japan.
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8
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Han SD, Jung SW, Jang SW, Son M, Kim BM, Kang MJ. Reduced Food-Effect on Intestinal Absorption of Dronedarone by Self-microemulsifying Drug Delivery System (SMEDDS). Biol Pharm Bull 2016; 38:1026-32. [PMID: 26133712 DOI: 10.1248/bpb.b15-00110] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The oral absorption of dronedarone (DRN), a benzofuran derivative with anti-arrhythmic activity, is significantly affected by food intake. The absolute bioavailability of the marketed product (Multaq, Sanofi, U.S.) was about 4% without food, but increased to 15% when administered with a high fat meal. Therefore, to reduce the food-effect on the intestinal absorption of DRN, a novel self-microemulsifying drug delivery system (SMEDDS) was formulated and the comparative in vivo absorption studies with the marketed product were carried out using male beagle dogs either in the fasted or fed state. The SMEDDS consisted of the drug, Labrafil M 1944CS, and Kolliphor EL in a weight ratio of 1 : 1 : 2, rapidly formed a fine oil-in-water emulsion with a droplet size less than 50 nm. An in vivo absorption study revealed that the area-under-curve (AUC0-24 h) and maximal plasma concentration (Cmax) were 10.4-fold (p<0.05) and 8.6-fold (p<0.05) higher, respectively, after the marketed product was orally administered to beagles in the fed state when compared to those in the fasted state. This food-effect were remarkably alleviated by SMEDDS formulation, with AUC0-24 h and Cmax 2.9-fold (p<0.05) and 2.6-fold (p<0.05) higher in the fed state when compared to the fasted state, by facilitating intestinal absorption of DRN in the fasted state. The results of this study suggest that SMEDDS may decrease the differences in oral absorption of DRN between the prandial states, improving therapeutic efficacy as well as patient compliance.
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9
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Cuscó C, Garcia J, Nicolás E, Rocas P, Rocas J. Multisensitive drug-loaded polyurethane/polyurea nanocapsules with pH-synchronized shell cationization and redox-triggered release. Polym Chem 2016. [DOI: 10.1039/c6py01275b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-pot versatile method for the preparation of sub-30 nm multisensitive polyurethane/polyurea nanocapsules with pH-synchronized shell cationization is presented. The nanocapsules have been loaded with different drugs which are released through a redox-triggered mechanism.
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Affiliation(s)
- Cristina Cuscó
- Nanobiotechnological Polymers Division
- Ecopol Tech
- 43720 L'Arboç del Penedès
- Spain
- Organic Chemistry Section
| | - Jordi Garcia
- Organic Chemistry Section
- Inorganic and Organic Chemistry Department
- Faculty of Chemistry
- CIBERobn and IBUB
- University of Barcelona
| | - Ernesto Nicolás
- Organic Chemistry Section
- Inorganic and Organic Chemistry Department
- Faculty of Chemistry
- CIBERobn and IBUB
- University of Barcelona
| | - Pau Rocas
- Nanobiotechnological Polymers Division
- Ecopol Tech
- 43720 L'Arboç del Penedès
- Spain
| | - Josep Rocas
- Nanobiotechnological Polymers Division
- Ecopol Tech
- 43720 L'Arboç del Penedès
- Spain
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10
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Wen R, Zhang Q, Xu P, Bai J, Li P, Du S, Lu Y. Xingnaojing mPEG2000-PLA modified microemulsion for transnasal delivery: pharmacokinetic and brain-targeting evaluation. Drug Dev Ind Pharm 2015; 42:926-35. [PMID: 26508078 DOI: 10.3109/03639045.2015.1091471] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Xingnaojing microemulsion (XNJ-M) administered intranasally is used for stroke treatment. In order to decrease the XNJ-M-induced mucosal irritation, XNJ-M modified by mPEG2000-PLA (XNJ-MM) were prepared in a previous work. The present work aimed to assess the impact of mPEG2000-PLA on pharmacokinetic features and brain-targeting ability of XNJ-M. The bioavailability and brain-target effects of borneol and geniposide in XNJ-M and XNJ-MM were compared in mice after intravenous (i.v.) and intranasal (i.n.) administrations. Gas chromatography, high-performance liquid chromatography, and ultra-performance liquid chromatography/tandem mass spectrometry methods were developed for the quantification of borneol and geniposide. Blood and brain samples were collected from mice at different time points after i.v. and i.n. treatments with borneol at 8.0 mg/kg, geniposide at 4.12 mg/kg. In addition, near-infrared fluorescence dye, 1,1'-dioctadecyl-3,3,3',3'-tetramethyl indotricarbocyanine iodide was loaded into microemulsions to evaluate the brain-targeting ability of XNJ-M and XNJ-MM by near-infrared fluorescence imaging in vivo and ex vivo. For XNJ-M and XNJ-MM, the relative brain targeted coefficients (Re) were 134.59% and 198.09% (borneol), 89.70% and 188.33% (geniposide), respectively. Besides, significant near-infrared fluorescent signal was detected in the brain after i.n. administration of microemulsions, compared with that of groups for i.v. administration. These findings indicated that mPEG2000-PLA modified microemulsion improved drug entry into blood and brain compared with normal microemulsion: the introduction of mPEG2000-PLA in microemulsion resulted in brain-targeting enhancement of both fat-soluble and water-soluble drugs. These findings provide a basis for the significance of mPEG2000-PLA addition in microemulsion, defining its effects on the drugs in microemulsion.
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Affiliation(s)
- Ran Wen
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Qing Zhang
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Pan Xu
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Jie Bai
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Pengyue Li
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Shouying Du
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
| | - Yang Lu
- a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , China
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11
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He S, Cui Z, Wang X, Zhang H, Dai W, Zhang Q. Cremophor-free intravenous self-microemulsions for teniposide: Safety, antitumor activity in vitro and in vivo. Int J Pharm 2015; 495:144-153. [PMID: 26253377 DOI: 10.1016/j.ijpharm.2015.08.005] [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: 03/25/2015] [Revised: 07/17/2015] [Accepted: 08/02/2015] [Indexed: 11/16/2022]
Abstract
The study was designed to identify the safety and antitumor activity of teniposide self-microemulsified drug delivery system (TEN-SMEDDS) previously developed, and to provide evidence for the feasibility and effectiveness of TEN-SMEDDS for application in clinic. The TEN-SMEDDS could form fine emulsion with mean diameter of 279 ± 19 nm, Zeta potential of -6.9 ± 1.4 mV, drug loading of 0.04 ± 0.001% and entrapment efficiency of 98.7 ± 1.6% after dilution with 5% glucose, respectively. The safety, including hemolysis, hypersensitivity, vein irritation and toxicity in vivo, and antitumor activity were assessed, VUNON as a reference. Sulforhodamine B assays demonstrated that the IC50 of TEN-SMEDDS against C6 and U87MG cells were higher than that of VUMON. But the effect of TEN-SMEDDS on the cell cycle distribution and cell apoptotic rate was similar to that of VUMON as observed by flow cytometry. Likewise, the antitumor activity of TEN-SMEDDS was considerable to that of VUMON. Finally, the TEN-SMEDDS exhibited less body weight loss, lower hemolysis and lower myelosuppression as compared with VUMON. In conclusion, promising TEN-SMEDDS retained the antitumor activity of teniposide and was less likely to cause some side effects compared to VUMON. It may be favorable for the application in clinic.
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Affiliation(s)
- Suna He
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China; Medical College, Henan University of Science & Technology, Luoyang 471003, People's Republic of China
| | - Zheng Cui
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | - Xueqing Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | - Hua Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | - Wenbing Dai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | - Qiang Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China.
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12
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He S, Yang H, Zhang R, Li Y, Duan L. Preparation and in vitro – in vivo evaluation of teniposide nanosuspensions. Int J Pharm 2015; 478:131-137. [DOI: 10.1016/j.ijpharm.2014.11.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/19/2014] [Accepted: 11/09/2014] [Indexed: 10/24/2022]
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13
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Wen R, Li H, Du S, Zhao X, Zhao Z, Bai J, Lu Y. Preparation of mPEG2000-PLA-modified Xingnaojing microemulsion and evaluation in mucosal irritation. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:923-42. [PMID: 24797762 DOI: 10.1080/09205063.2014.913467] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Xingnaojing microemulsion (XNJ-M) administered intranasally is used for stroke treatment. Methoxy poly(ethylene glycol)-poly(lactide) (mPEG-PLA) is a block copolymer with surfactant-like properties and good biodegradability and reliable biological safety. In order to investigate the possibility to lower mucosa irritation with XNJ-M, XNJ-M modified by mPEG2000-PLA (XNJ-MM) was prepared. Different ratios of mPEG2000-PLA were synthesized. The structures and properties were confirmed by 1H-NMR, IR, and DSC. The hydrophile-lipophile balance (HLB) value and critical micellar concentration of copolymers were investigated. The in situ toad palate model was adopted to investigate the ciliotoxicity of the copolymers. The XNJ-M and XNJ-MM were prepared by dropping aqueous phase method. Mucosal irritation of different Xingnaojing (XNJ) preparations was studied by behavioral observations including sneezing and scratching nose. The epithelial thickness of nasal mucosa was evaluated and the secretory protein concentration was determined. The results of in situ toad palate model demonstrated that high HLB value mPEG2000-PLA basically showed no ciliotoxicity, while EL-35 had significant dose-dependent ciliotoxicity (P<0.05). The irritating effects of mPEG2000-PLA were significantly lower than EL-35 after seven days of treatment, based on the epithelial thickness of 0.429±0.100 mm and 0.700±0.035 mm, respectively (P<0.01). The epithelial thickness with XNJ-MM was lower than XNJ-M after seven days of treatment: 0.620±0.10 mm vs. 0.809±0.153 mm, respectively (P<0.05). The mPEG2000-PLA-modified microemulsion is a promising dosage form of XNJ, based on reduced irritation on nasal mucosa.
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Affiliation(s)
- Ran Wen
- a School of Chinese Pharmacy , Beijing University of Chinese Medicine , No. 6 Wangjing Zhonghuan South Road, Chaoyang District, Beijing 100102 , P.R. China
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14
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Fukunaga E, Hirao Y, Ogata-Ikeda I, Nishimura Y, Seo H, Oyama Y. Bisabololoxide A, one of the constituents in German chamomile extract, attenuates cell death induced by calcium overload. Phytother Res 2013; 28:685-91. [PMID: 23873581 DOI: 10.1002/ptr.5041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2012] [Revised: 06/21/2013] [Accepted: 06/25/2013] [Indexed: 12/17/2022]
Abstract
Bisabololoxide A (BSBO), main constituents in German chamomile extract, is responsible for antipruritic effect. In previous study, the incubation with 30-100 μM BSBO for 24 h exerted cytotoxic and proapoptotic effects on rat thymocytes. To further characterize BSBO cytotoxicity, the effect on the cells suffering from calcium overload by calcium ionophore A23187 was examined. A23187 induced Ca(2+) -dependent cell death. Contrary to our expectation, 1-10 μM BSBO inhibited A23187-induced increase in cell lethality of rat thymocytes. BSBO attenuated A23187-induced increases in populations of shrunken living cells, phosphatidylserine-exposed living cells, and dead cells, without affecting the increase in intracellular Ca(2+) concentration and the Ca(2+) -dependent hyperpolarization. The effect of BSBO on A23187-treated cells may be unique because the activation of Ca(2+) -dependent K(+) channels is required for cell shrinkage, externalization of phosphatidylserine, and cell death in some cells. The cell death induced by A23187 was not inhibited by Z-VAD-FMK, a pan-inhibitor of caspases. Thus, the cell death may be a necrosis with some features observed during an early stage of apoptosis. These results suggest that BSBO at low micromolar concentrations is cytoprotective against calcium overload.
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Affiliation(s)
- Eri Fukunaga
- Laboratory of Cellular Signaling, Faculty of Integrated Arts and Sciences, The University of Tokushima, Tokushima, 770-8502, Japan
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15
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Kiss L, Walter FR, Bocsik A, Veszelka S, Ózsvári B, Puskás LG, Szabó-Révész P, Deli MA. Kinetic Analysis of the Toxicity of Pharmaceutical Excipients Cremophor EL and RH40 on Endothelial and Epithelial Cells. J Pharm Sci 2013; 102:1173-81. [DOI: 10.1002/jps.23458] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 12/04/2012] [Accepted: 01/04/2013] [Indexed: 11/08/2022]
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16
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Li L, Luo Z, Chen Z, Chen J, Zhou S, Xu P, Hu P, Wang J, Chen N, Huang J, Huang M. Enhanced Photodynamic Efficacy of Zinc Phthalocyanine by Conjugating to Heptalysine. Bioconjug Chem 2012; 23:2168-72. [DOI: 10.1021/bc3002997] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Linsen Li
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
| | - Zhipu Luo
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
| | - Zhuo Chen
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
| | - Jincan Chen
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
| | - Shanyong Zhou
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
| | - Peng Xu
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
| | - Ping Hu
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
| | - Jundong Wang
- College of
Chemistry and Chemical
Engineering, Fuzhou University, Fujian,
China
| | - Naisheng Chen
- College of
Chemistry and Chemical
Engineering, Fuzhou University, Fujian,
China
| | - Jinling Huang
- College of
Chemistry and Chemical
Engineering, Fuzhou University, Fujian,
China
| | - Mingdong Huang
- State Key Laboratory of Structural
Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
- Danish-Chinese Centre for Proteases and Cancer
- Graduate University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing
100049, China
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17
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Possible use of quercetin, an antioxidant, for protection of cells suffering from overload of intracellular Ca2+: A model experiment. Life Sci 2008; 83:164-9. [DOI: 10.1016/j.lfs.2008.05.009] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2008] [Revised: 05/04/2008] [Accepted: 05/17/2008] [Indexed: 11/21/2022]
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18
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Yamaguchi JY, Kanada A, Horimoto K, Oyama TM, Chikutei KI, Nishimura Y, Yamamoto H, Ishida S, Okano Y, Oyama Y. Modification of vulnerability to dodecylbenzenesulfonate, an anionic surfactant, by calcium in rat thymocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2006; 22:234-239. [PMID: 21783715 DOI: 10.1016/j.etap.2006.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Accepted: 03/31/2006] [Indexed: 05/31/2023]
Abstract
We have previously reported that cremophor EL, a nonionic surfactant, at clinical concentrations significantly decreases the cell viability of rat thymocytes with phosphatidylserine-exposed (PS-exposed) membranes under in vitro condition. It is reminiscent of a possibility that sodium dodecylbenzenesulfonate (DCBS), an anionic surfactant world-widely used for detergents, also affects the cells in the similar manner. To test the possibility, the effect of DCBS on rat thymocytes has been examined using a flow cytometer with fluorescent probes. Exposure of PS on outer surface of cell membranes was induced by A23187, a calcium ionophore to increase intracellular Ca(2+) concentration ([Ca(2+)](i)). DCBS at 1μg/mL (2.87μM) significantly decreased the viability of cells with PS-exposed membranes, but not with intact membranes. DCBS also significantly decreased the viability of cells exposed to H(2)O(2), an oxidative stress increasing the [Ca(2+)](i). On the other hand, the decrease in extracellular Ca(2+) concentration ([Ca(2+)](e)) increased the cell vulnerability to DCBS and vice versa. Intact membrane lipid bilayer and extracellular Ca(2+) are required to maintain membrane integrity. Therefore, the change of membrane property by manipulation of [Ca(2+)](i) and [Ca(2+)](e) is one of causes for the augmentation of DCBS cytotoxicity.
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Affiliation(s)
- Jun-Ya Yamaguchi
- Laboratories of Cell Signaling and Environmental Chemistry, Faculty of Integrated Arts and Sciences, The University of Tokushima, Tokushima 770-8502, Japan
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Ahmed F, Pakunlu RI, Brannan A, Bates F, Minko T, Discher DE. Biodegradable polymersomes loaded with both paclitaxel and doxorubicin permeate and shrink tumors, inducing apoptosis in proportion to accumulated drug. J Control Release 2006; 116:150-8. [PMID: 16942814 DOI: 10.1016/j.jconrel.2006.07.012] [Citation(s) in RCA: 392] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2006] [Revised: 07/01/2006] [Accepted: 07/07/2006] [Indexed: 10/24/2022]
Abstract
Cytotoxicity can in principle be maximized if drugs with different activities can be delivered simultaneously to the same cell. However, combination therapy with drugs having distinct properties such as solubility generally requires use of multiple carriers or solvents, limiting the likelihood of simultaneous delivery. In this brief report, we describe the in vivo use of biodegradable polymersomes for systemic delivery of an anticancer cocktail. These polymer-based shells exploit a thick hydrophobic membrane and an aqueous lumen to efficiently carry both hydrophobic and hydrophilic drugs, respectively paclitaxel and doxorubicin. Polymersomes are long-circulating in vivo but also degrade and release their drugs on a time scale of about 1 day, by which time the tumors treated here will otherwise have almost doubled in volume. A single systemic injection of the dual drug combination shows a higher maximum tolerated dose than the free drug cocktail and shrinks tumors more effectively and more sustainably than free drug: 50% smaller tumors are seen at 5 days with polymersomes. The polymersomes cause two-fold higher cell death in tumors than free drug and show quantitatively similar increases in maximum tolerated dose and drug accumulation within the tumors-suggesting promise for multi-drug delivery.
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Affiliation(s)
- Fariyal Ahmed
- Departments of Chemical-Biomolecular Engineering and Bioengineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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20
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Chikutei KI, Oyama TM, Ishida S, Okano Y, Kobayashi M, Matsui H, Horimoto K, Nishimura Y, Ueno SY, Oyama Y. Propofol, an anesthetic possessing neuroprotective action against oxidative stress, promotes the process of cell death induced by H2O2 in rat thymocytes. Eur J Pharmacol 2006; 540:18-23. [PMID: 16730701 DOI: 10.1016/j.ejphar.2006.04.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Revised: 04/19/2006] [Accepted: 04/25/2006] [Indexed: 11/30/2022]
Abstract
Propofol (2,6-diisopropylphenol) is a general anesthetic possessing a neuroprotective action against oxidative stress produced by H2O2. H2O2 induces an exposure of phosphatidylserine on outer surface of cell membranes, resulting in change in membrane phospholipid arrangement, in rat thymocytes. Since propofol is highly lipophilic, the agent is presumed to interact with membrane lipids and hence to modify the cell vulnerability to H2O2. Therefore, to test the possibility, we have examined the effect of propofol on rat thymocytes simultaneously incubated with H2O2. Although propofol (up to 30 microM) alone did not significantly affect the cell viability, the agent at 10 microM started to increase the population of dead cells in the presence of 3 mM H2O2 and the significant increase was observed at 30 microM. Propofol at clinically relevant concentrations (10-30 microM) facilitated the process of cell death induced by H2O2 in rat thymocytes. However, propofol protected rat brain neurons against the oxidative stress induced by H2O2 under same experimental condition. Therefore, the action of propofol may be dependent on the type of cells.
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Affiliation(s)
- Ken-ichi Chikutei
- Department of Pharmaceutical Care and Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8512, Japan
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21
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Gutiérrez MB, Miguel BS, Villares C, Gallego JG, Tuñón MJ. Oxidative stress induced by Cremophor EL is not accompanied by changes in NF-kappaB activation or iNOS expression. Toxicology 2006; 222:125-31. [PMID: 16533553 DOI: 10.1016/j.tox.2006.02.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2005] [Revised: 02/06/2006] [Accepted: 02/06/2006] [Indexed: 10/25/2022]
Abstract
The effects of polyoxyethylenglycerol triricinoleate 35 (Cremophor EL, CrEL) on markers of oxidative stress, nuclear factor kappa B (NF-kappaB) activation and inducible nitric oxide synthase (iNOS) expression were studied in the liver of male Wistar rats. Animals were randomly divided into three groups. Group Cr1 received, i.p., CrEL at 0.046ml/kg daily for 7 days, group Cr2 received CrEL at 0.33ml/kg and the controls were injected with CrEL vehicle (saline solution with 25% ethanol). Both alanine transaminase (ALT) and aspartate transaminase (AST) serum activities were significantly increased in the Cr2 group (+16% and +25%, respectively). AST activity was also higher in the Cr1 group when compared to control animals (+20%). The cytosolic concentration of thiobarbituric acid reactive substances (TBARS) increased in both groups of rats receiving CrEL (Cr1: +24%; Cr2: +33%). Reduced glutathione (GSH) concentration was not significantly modified at any of the CrEL doses, but both the hepatic concentration of oxidised glutathione (GSSG) (Cr1: +37%; Cr2: +84%) and the GSH/GSSG ratio (Cr1: -21%; Cr2: -45%) were significantly modified. CrEL induced no significant NF-kappaB activation, changes in p50 and p65 NF-kappaB subunits or induction of iNOS protein. Data obtained indicate that although high doses of CrEL cause oxidative stress, this is not enough to induce changes in NF-kappaB activation or iNOS expression.
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