1
|
Lian X, Zhang Y, Wang J, Yan B. Antineoplastic Mitoxantrone Monitor: A Sandwiched Mixed Matrix Membrane (MMM) Based on a Luminescent MOF–Hydrogel Hybrid. Inorg Chem 2020; 59:10304-10310. [DOI: 10.1021/acs.inorgchem.0c01451] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Xiao Lian
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
- College of Chemistry and Chemical Engineering, Anhui University, Hefei 230039, China
| | - Yu Zhang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Jinmin Wang
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Bing Yan
- Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, China
- School of Materials Science and Engineering, Liaocheng University, Liaocheng 252000, China
| |
Collapse
|
2
|
Accelerated structure-based design of chemically diverse allosteric modulators of a muscarinic G protein-coupled receptor. Proc Natl Acad Sci U S A 2016; 113:E5675-84. [PMID: 27601651 DOI: 10.1073/pnas.1612353113] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Design of ligands that provide receptor selectivity has emerged as a new paradigm for drug discovery of G protein-coupled receptors, and may, for certain families of receptors, only be achieved via identification of chemically diverse allosteric modulators. Here, the extracellular vestibule of the M2 muscarinic acetylcholine receptor (mAChR) is targeted for structure-based design of allosteric modulators. Accelerated molecular dynamics (aMD) simulations were performed to construct structural ensembles that account for the receptor flexibility. Compounds obtained from the National Cancer Institute (NCI) were docked to the receptor ensembles. Retrospective docking of known ligands showed that combining aMD simulations with Glide induced fit docking (IFD) provided much-improved enrichment factors, compared with the Glide virtual screening workflow. Glide IFD was thus applied in receptor ensemble docking, and 38 top-ranked NCI compounds were selected for experimental testing. In [(3)H]N-methylscopolamine radioligand dissociation assays, approximately half of the 38 lead compounds altered the radioligand dissociation rate, a hallmark of allosteric behavior. In further competition binding experiments, we identified 12 compounds with affinity of ≤30 μM. With final functional experiments on six selected compounds, we confirmed four of them as new negative allosteric modulators (NAMs) and one as positive allosteric modulator of agonist-mediated response at the M2 mAChR. Two of the NAMs showed subtype selectivity without significant effect at the M1 and M3 mAChRs. This study demonstrates an unprecedented successful structure-based approach to identify chemically diverse and selective GPCR allosteric modulators with outstanding potential for further structure-activity relationship studies.
Collapse
|
3
|
Ghanbarzadeh S, Arami S, Pourmoazzen Z, Ghasemian-Yadegari J, Khorrami A. Plasma stable, pH-sensitive fusogenic polymer-modified liposomes: A promising carrier for mitoxantrone. J Biomater Appl 2013; 29:81-92. [PMID: 24336315 DOI: 10.1177/0885328213515288] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
pH-sensitive liposomes are designed to undergo acid-triggered destabilization. In the present study, we prepared polymer-modified, plasma stable, pH-sensitive fusogenic mitoxantrone liposomes to increase efficacy and selectivity on cancer cell lines. Conventional liposomes were prepared using cholesterol and dipalmitoyl-sn-glycero-3-phosphatidylethanolamine. Dioleoylphosphatidylethanolamine and a cholesteryl derivative, poly(monomethylitaconate)-co-poly(N,N-dimethylaminoethyl methacrylate) (PMMI-co-PDMAEMA), were used for the preparation of pH-sensitive fusogenic liposomes. Using polyethylene glycol (PEG)-poly(monomethylitaconate)-CholC6 (PEG-PMMI-CholC6) copolymers instead of cholesterol introduced pH-sensitive and plasma stability properties simultaneously in prepared liposomes. All formulations were prepared by thin film hydration method and subsequently, pH-sensitivity and stability in human serum were evaluated. The ability of pH-sensitive fusogenic liposomes to enhance the mitoxantrone cytotoxicity and selectivity in cancerous cell lines was assessed in vitro compared to normal cell line using human breast cancer cell line (MCF-7), human prostate cancer cell line (PC-3), and human umbilical vein endothelial cells line. Results revealed that both PMMI-co-PDMAEMA and PEG-PMMI-CholC6-based formulations showed pH-sensitive property and were found to rapidly release mitoxantrone under mildly acidic conditions. Nevertheless, only the PEG-PMMI-CholC6-based liposomes preserved pH-sensitivity after incubation in plasma. Mitoxantrone loaded-pH-sensitive fusogenic liposomes exhibited a higher cytotoxicity than the control conventional liposomes on MCF-7 and PC-3 cell lines. On the contrary, both pH-sensitive fusogenic liposomes showed lower cytotoxic effect on human umbilical vein endothelial cell line. Plasma stable, pH-sensitive fusogenic liposomes are promising carriers for enhancing the efficiency and selectivity, besides reduction of the side effects of anticancer agents.
Collapse
Affiliation(s)
- Saeed Ghanbarzadeh
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sanam Arami
- Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran Pharmaceutical Biotechnology Department, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zhaleh Pourmoazzen
- Chemistry Department, Science Faculty, Azarbaijan Shahid Madani University, Tabriz, Iran
| | - Javad Ghasemian-Yadegari
- Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran Department of Pharmacognosy, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Arash Khorrami
- Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran Department of Pharmacology and Toxicology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
4
|
Sasaki T, Kamata R, Ueno S, Kaneda T, Temma K. Green tea catechins increase the force of contraction in isolated guinea pig atrial muscle preparations by increasing the amplitude of intracellular Ca2+ concentration. J Vet Med Sci 2012; 74:1603-8. [PMID: 22864409 DOI: 10.1292/jvms.12-0254] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
It has been reported that green tea catechins enhance the force of contraction of isolated heart muscle preparations. However, it remains controversial whether or not the increase in force of contraction is related to an increase in the intracellular Ca(2+) concentration ([Ca(2+)]i). In this study, the relationship was investigated using a left atrial muscle preparation isolated from guinea pig heart. In the left atrial muscle preparations without fura-2/AM loading, neither EGC (epigallocatechin) nor EC (epicatechin) influenced the force of contraction, but EGCG (epigallocatechin gallate) and ECG (epicatechin gallate) increased the force of contraction in a dose-dependent manner. The ED(50) value of EGCG was significantly higher than that of ECG. In the atrial muscle preparations loaded with fura-2/AM, EGCG and ECG increased the amplitude of [Ca(2+)]i(peak [Ca(2+)]i minus diastolic [Ca(2+)]i) which is associated with the increase in force of contraction. Simple regression analysis between the degree of increase in the force of contraction and the increase in the amplitude of [Ca(2+)]i revealed a positive correlation in EGCG, ECG and CaCl(2). In addition, the slopes of the regression lines of EGCG and ECG were comparable with those of CaCl(2). It was suggested that atrial muscle preparations had a higher affinity for ECG than EGCG, and that the increase in the force of contraction by EGCG and ECG was closely related to the increase in the amplitude of [Ca(2+)]i.
Collapse
Affiliation(s)
- Takushi Sasaki
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | | | | | | | | |
Collapse
|
5
|
Sasaki T, Ueno S, Hara Y, Uchide T, Temma K. Antimuscarinic action of doxorubicin does not involve free-radical formation in isolated guinea pig hearts. Can J Physiol Pharmacol 2010; 88:77-81. [DOI: 10.1139/y09-093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
It has been proposed that the cardiotoxicity of anthracycline anticancer drugs involves free-radical formation. One early manifestation of toxicity appears to be caused by the antimuscarinic actions of these drugs. Accordingly, we examined whether the antimuscarinic action of one of these drugs, doxorubicin, is altered by antioxidants. In electrically stimulated left atrial muscle preparations obtained from guinea pig hearts, doxorubicin significantly increased the tissue concentration of thiobarbituric acid-reactive substance indicating increased lipid peroxidation. This effect of doxorubicin was significantly suppressed by the antioxidants α-tocopherol, dexrazoxane, and epigallocatechin gallate. Carbachol produced a concentration-dependent negative inotropic effect in our atrial preparations. Doxorubicin caused a seemingly parallel rightward shift of the concentration–response curve for carbachol. Neither α-tocopherol, dexrazoxane, nor epigallocatechin gallate reversed this effect of doxorubicin. The results indicate that in extirpated heart tissue, doxorubicin causes lipid peroxidation through the formation of free radicals. However, this effect of doxorubicin is unrelated to its antimuscarinic action.
Collapse
Affiliation(s)
- Takushi Sasaki
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu-shi, Hokkaido 069-8501, Japan
| | - Shunji Ueno
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu-shi, Hokkaido 069-8501, Japan
| | - Yukio Hara
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu-shi, Hokkaido 069-8501, Japan
| | - Tsuyoshi Uchide
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu-shi, Hokkaido 069-8501, Japan
| | - Kyosuke Temma
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, 35-1, Higashi 23-bancho, Towada-shi, Aomori 034-8628, Japan
- Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu-shi, Hokkaido 069-8501, Japan
| |
Collapse
|
6
|
CHUGUN A, UCHIDE T, TSURIMAKI C, NAGASAWA H, SASAKI T, UENO S, TAKAGISHI K, HARA Y, TEMMA K. Mechanisms Responsible for Reduced Cardiotoxicity of Mitoxantrone Compared to Doxorubicin Examined in Isolated Guinea-Pig Heart Preparations. J Vet Med Sci 2008; 70:255-64. [DOI: 10.1292/jvms.70.255] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Akihito CHUGUN
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Tsuyoshi UCHIDE
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University
| | - Chieko TSURIMAKI
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University
| | - Hajime NAGASAWA
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University
| | - Takushi SASAKI
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University
| | - Shunji UENO
- Laboratory of Veterinary Public Health, School of Veterinary Medicine, Kitasato University
| | - Kiyohiko TAKAGISHI
- Laboratory of Cell and Molecular Biology, School of Veterinary Medicine, Kitasato University
| | - Yukio HARA
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University
| | - Kyosuke TEMMA
- Laboratory of Toxicology, School of Veterinary Medicine, Kitasato University
| |
Collapse
|
7
|
Hara Y, Kizaki K, Temma K, Chugun A, Kondo H. Effects of Anticancer Chemotherapeutic Drugs on the Acetylcholine Receptor-Operated Potassium Current in Guinea Pig Atrial Myocytes. Basic Clin Pharmacol Toxicol 2004; 95:234-40. [PMID: 15546478 DOI: 10.1111/j.1742-7843.2004.pto950506.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The effects of 7 anticancer chemotherapeutic drugs on the muscarinic acetylcholine receptor-operated potassium current (I(K.ACh)) in guinea pig atrial myocytes were investigated using the whole cell patch clamp technique. Doxorubicin, pirarubicin, and mitoxantrone inhibited the carbachol-induced I(K.ACh) in a concentration-dependent manner in atrial cells at a holding potential of -40 mV. IC50 values of doxorubicin, pirarubicin, and mitoxantrone for the carbachol-induced I(K.ACh) were 7.7 microM, 3.7 microM, and 9.1 microM, respectively. Pirarubicin inhibited the adenosine-induced and the GTPgammaS-induced I(K.ACh) in a concentration-dependent manner (IC50=6.0 and 5.1 microM, respectively). Doxorubicin and mitoxantrone up to 100 microM did not have an influence on the adenosine-induced I(K.ACh). Doxorubicin did not affect the GTPgammaS-induced I(K.ACh). Mitoxantrone 100 microM inhibited the current only by 25%. For concentrations up to 100 microM, anticancer drugs that have chemical structures entirely different from that of doxorubicin, i.e., 5-fluorouracil, 6-mercaptopurine, cyclophosphamide, and actinomycin D, did not have an influence on the carbachol-induced I(K.ACh). Doxorubicin and chemically related compounds possess anticholinergic effects mediated via an inhibitory action on I(K.ACh) by different underlying molecular mechanisms. Doxorubicin and mitoxantrone may inhibit I(K.ACh) by the blockade of muscarinic receptors, whereas pirarubicin may inhibit the current not only via blocking the muscarinic receptors but also by depressing the functions of the K+ channel itself and/or GTP-binding proteins.
Collapse
Affiliation(s)
- Yukio Hara
- Department of Veterinary Pharmacology, School of Veterinary Medicine and Animal Sciences, Kitasato University, Towada, Aomori 034-8628, Japan.
| | | | | | | | | |
Collapse
|