1
|
Fu Y, Ju Y, Zhao S. Ca v1.2 regulated odontogenic differentiation of NG2 + pericytes during pulp injury. Odontology 2023; 111:57-67. [PMID: 35739380 DOI: 10.1007/s10266-022-00720-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 05/30/2022] [Indexed: 01/06/2023]
Abstract
NG2+ pericytes, as the possible precursor cells of mesenchymal stem cells (MSCs), have drawn attention due to their ability to differentiate into odontoblasts. Cav1.2 is involved in the differentiation process of stem cells, but its role in the differentiation of NG2+ pericytes is not clear. The aim of the present study was to examine the role of Cav1.2 in the differentiation of NG2+ pericytes into odontoblasts. NG2+ pericytes were obtained from human dental pulp cells by magnetic-activated cell sorting. During the odontogenic differentiation of NG2+ pericytes, the effects of the Cav1.2 inhibitors, nimodipine and Cav1.2 knockdown shRNA, were analyzed by real-time polymerase chain reaction and alizarin red staining. NG2CreERT2/Rosa26-GFP lineage-tracing mice were established to further investigate the roles of NG2+ pericytes and Cav1.2 in incisor self-repair after injury in vivo. At 10 min, 1 day, and 3 days after pulp injuries in transgenic mice, NG2-GFP+ and Cav1.2 immunofluorescence co-staining was performed on the incisors. Nimodipine treatment and Cav1.2 knockdown showed similar inhibition of calcium nodule formation and mRNA levels of osteogenic markers (DSPP, DMP1, and Runx2, p < 0.05). NG2+ pericytes migrated from their inherent perivascular location to the odontoblast layers after pulp injury. Cav1.2 showed a similar response pattern as NG2+ pericytes and gradually returned to normal levels. In addition, many co-stained areas of Cav1.2 and NG2+ pericytes, both near the perivascular and odontoblast layers, were observed. These results indicate that Cav1.2 played a vital role in the odontogenic differentiation of NG2+ pericytes, and that it might be closely linked to the NG2+ pericytes-mediated repair of dental pulp injury in vivo.
Collapse
Affiliation(s)
- Yunyu Fu
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
- Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, 980-8575, Japan
| | - Yanqin Ju
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China
| | - Shouliang Zhao
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, 200040, People's Republic of China.
| |
Collapse
|
2
|
A P, Makam P. 1,4-Dihydropyridine: synthetic advances, medicinal and insecticidal properties. RSC Adv 2022; 12:29253-29290. [PMID: 36320730 PMCID: PMC9555063 DOI: 10.1039/d2ra04589c] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 09/21/2022] [Indexed: 11/07/2022] Open
Abstract
1,4-Dihydropyridine (1,4-DHP) is one of the foremost notable organic scaffolds with diverse pharmaceutical applications. This study will highlight recent accomplishments in the construction of 1,4-DHP with structural and functional modifications using multi-component one-pot and green synthetic methodologies. The various intrinsic therapeutic applications, ranging from calcium channel blocker, anti-oxidative, anticancer, anti-inflammatory, anti-microbial, anti-hypertensive, anti-diabetic, anticoagulants, anti-cholinesterase, neuro-protective, and other miscellaneous activities, have been summarized with a focus on their structure-activity relationship (SAR) investigations. In addition, the insecticidal properties have been collated and discussed. Researchers in the fields of medicinal chemistry and drug development will find the summarized conclusions of this study incredibly informative, instructional, and valuable.
Collapse
Affiliation(s)
- Parthiban A
- Centre for Excellence on GMP Extraction Facility, National Institute of Pharmaceutical Education and Research, (NIPER) Guwahati Assam India 781101
| | - Parameshwar Makam
- Department of Chemistry, School of Applied and Life Sciences, Uttaranchal University Arcadia Grant, P. O. Chandanwari, Premnagar Dehradun Uttarakhand India 248007
- Dr Param Laboratories Phase-1, IDA, B. N. Reddy Nagar, Cherlapally Hyderabad Telangana 500051 India
| |
Collapse
|
3
|
Akman D, Denzinger K, Huang S, Lee J, Nafie JW, Wolber G, Zamponi GW, Armstrong DW, Gündüz MG. Focusing on C-4 position of Hantzsch 1,4-dihydropyridines: Molecular modifications, enantioseparation, and binding mechanism to L- and T-type calcium channels. Eur J Med Chem 2022; 244:114787. [DOI: 10.1016/j.ejmech.2022.114787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/08/2022] [Accepted: 09/17/2022] [Indexed: 11/04/2022]
|
4
|
R K, G V, A K, S K. Experimental, Molecular Docking and Molecular Dynamics Investigation on Newly Synthesized Diethyl 4-(Anthracen-9-yl)-2,6-Dimethyl-1,4-Dihydropyridine-3,5-Dicarboxylate. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2106252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Karthick R
- Department of Physics, CEG Campus, Anna University, Chennai, India
| | - Velraj G
- Department of Physics, CEG Campus, Anna University, Chennai, India
| | - Karuppusamy A
- Department of Chemistry, Indian Institute of Technology–Roorkee, Roorkee, India
| | - Karthikeyan S
- School of Advanced Science, Division of Physics, Vellore Institute of Technology University, Chennai Campus, Chennai, India
- Laboratory of Computational Modeling of Drugs, South Ural State University, Chelyabinsk, Russia
| |
Collapse
|
5
|
Yıldırım SÖ, Akkurt M, Çetin G, Şimşek R, Butcher RJ, Bhattarai A. Synthesis, characterization, crystal structure and Hirshfeld surface analysis of a hexahydroquinoline derivative: tert-butyl 4-([1,1′-biphenyl]-4-yl)-2,6,6-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate. Acta Crystallogr E Crystallogr Commun 2022; 78:798-803. [PMID: 35974826 PMCID: PMC9361379 DOI: 10.1107/s2056989022007022] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/08/2022] [Indexed: 11/30/2022]
Abstract
C—H⋯O and N—H⋯O hydrogen bonds connect molecules in the crystal, generating layers parallel to the (100) plane with (6) and C(7) graph-set motifs. C—H⋯π interactions help to reinforce this layered molecular structure. The title compound, C29H33NO3, crystallizes with three molecules (A, B and C) in the asymmetric unit. They differ in the twist of the phenyl and benzene rings of the 1,1′-biphenyl ring with respect to the plane of the 1,4-dihydropyridine ring. In all three molecules, the 1,4-dihydropyridine ring adopts a distorted boat conformation. The cyclohexene ring has an envelope conformation in molecules A and B, while it exhibits a distorted half-chair conformation for both the major and minor components in the disordered molecule C. In the crystal, molecules are linked by C—H⋯O and N—H⋯O hydrogen bonds, forming layers parallel to (100) defining R14(6) and C(7) graph-set motifs. Additional C—H⋯π interactions consolidate the layered structure. Between the layers, van der Waals interactions stabilize the packing, as revealed by Hirshfeld surface analysis. The greatest contributions to the crystal packing are from H⋯H (69.6% in A, 69.9% in B, 70.1% in C), C⋯H/H⋯C (20.3% in A, 20.6% in B, 20.3% in C) and O⋯H/H⋯O (8.6% in A, 8.6% in B, 8.4% in C) interactions.
Collapse
|
6
|
Harding EK, Zamponi GW. Central and peripheral contributions of T-type calcium channels in pain. Mol Brain 2022; 15:39. [PMID: 35501819 PMCID: PMC9063214 DOI: 10.1186/s13041-022-00923-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/13/2022] [Indexed: 02/06/2023] Open
Abstract
AbstractChronic pain is a severely debilitating condition that reflects a long-term sensitization of signal transduction in the afferent pain pathway. Among the key players in this pathway are T-type calcium channels, in particular the Cav3.2 isoform. Because of their biophysical characteristics, these channels are ideally suited towards regulating neuronal excitability. Recent evidence suggests that T-type channels contribute to excitability of neurons all along the ascending and descending pain pathways, within primary afferent neurons, spinal dorsal horn neurons, and within pain-processing neurons in the midbrain and cortex. Here we review the contribution of T-type channels to neuronal excitability and function in each of these neuronal populations and how they are dysregulated in chronic pain conditions. Finally, we discuss their molecular pharmacology and the potential role of these channels as therapeutic targets for chronic pain.
Collapse
|
7
|
Construction and Aromatization of Hantzsch 1,4‐Dihydropyridines under Microwave Irradiation: A Green Approach. ChemistrySelect 2022. [DOI: 10.1002/slct.202104032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
8
|
El-Wakil MH, Teleb M, Abu-Serie MM, Huang S, Zamponi GW, Fahmy H. Structural optimization, synthesis and in vitro synergistic anticancer activities of combinations of new N3-substituted dihydropyrimidine calcium channel blockers with cisplatin and etoposide. Bioorg Chem 2021; 115:105262. [PMID: 34411980 DOI: 10.1016/j.bioorg.2021.105262] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 07/19/2021] [Accepted: 08/07/2021] [Indexed: 01/09/2023]
Abstract
T-type calcium channels are considered potential drug targets to combat cancer. Combining T-type calcium channel blockers with conventional chemotherapy drugs represents a promising strategy towards successful cancer treatment. From this perspective, we report in this study the design and synthesis of a novel series of N3-sustituted dihydropyrimidines (DHPMs) as anticancer adjuvants to cisplatin (Cis) and etoposide (Eto). Full spectral characterization of the new compounds was done using FT-IR, 1H NMR, 13C NMR, and HRMS. Structure elucidation was confirmed by 2D NMR 1H-H COSY, HSQC and NOESY experiments. Novel derivatives were tested for their Ca2+ channel blocking activity by employing the whole cell patch-clamp technique. Results demonstrated that most compounds were potential T-type calcium channel blockers with the triazole-based C12 and C13 being the most selective agents against CaV3.2 channel. Further electrophysiological studies demonstrated that C12 and C13 inhibited CaV3.2 currents with respective affinity of 2.26 and 1.27 µM, and induced 5 mV hyperpolarizing shifts in the half-inactivation potential. Subsequently, C12 and C13 were evaluated for their anticancer activities alone and in combination with Cis and Eto against A549 and MDA-MB 231 cancer cells. Interestingly, both compounds exhibited potential anticancer effects with IC50 values < 5 µM. Combination studies revealed that both compounds had synergistic effects (combination index CI < 1) on Cis and Eto through induction of apoptosis (p53 activation and up-regulation of BAX and p21 gene expression). Importantly, in silico physicochemical and ADMET assessment of both compounds revealed their potential drug-like properties with decreased risk of cardiac toxicity. Hence, C12 and C13 are promising anticancer adjuvants through inhibition of CaV3.2 T-type calcium channels, thereby serving as eminent leads for further modification.
Collapse
Affiliation(s)
- Marwa H El-Wakil
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Mohamed Teleb
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt.
| | - Marwa M Abu-Serie
- Department of Medical Biotechnology, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City), Egypt
| | - Sun Huang
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive NW, Calgary T2N 4N1, Canada
| | - Gerald W Zamponi
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Alberta Children's Hospital Research Institute, University of Calgary, 3330 Hospital Drive NW, Calgary T2N 4N1, Canada
| | - Hesham Fahmy
- Department of Pharmaceutical Sciences, College of Pharmacy & Allied Health Sciences, South Dakota State University, Brookings, SD 57006, USA.
| |
Collapse
|
9
|
M3, a 1,4-Dihydropyridine Derivative and Mixed L-/T-Type Calcium Channel Blocker, Attenuates Isoproterenol-Induced Toxicity in Male Wistar Rats. Cardiovasc Toxicol 2020; 20:627-640. [PMID: 32671560 DOI: 10.1007/s12012-020-09587-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recent evidence indicates that Ca2+ dysregulation is involved in the pathogenesis of isoproterenol (ISP)-induced biochemical toxicity and associated oxidative stress. In this study, we investigated the chemopreventive benefit of M3, a 1,4-dihydropyridine calcium channel blocker, against ISP-induced toxicity in male Wistar rats. Adult rats were divided into eight groups of six rats/group. Groups 1-5 received normal saline (control, 10 mL/kg/day, p.o.), ISP (85 mg/kg/day, s.c.), M3 lower dose (M3LD, 5 mg/kg, p.o.), M3 upper dose (M3UD, 20 mg/kg/day, p.o.), and Nifedipine (NFD, 20 mg/kg/day, p.o.), respectively. Others (groups 6-8) were pretreated with either M3LD, M3UD or NFD one hour before ISP administration. All rats were sacrificed 24 h after the last administration and changes in biochemical, hematological, and antioxidant parameters were assessed. Histologic examination of the heart, liver and kidney was also conducted. ISP elevated (p < 0.05) Ca2+, alanine aminotransferase, lactate dehydrogenase, triglycerides, and low-density lipoprotein levels when compared with control. Similarly, ISP increased levels of markers of renal function (p < 0.01), C-reactive protein (148.1%) and myocardial malondialdehyde (MDA, 88.7%) and tumor necrosis factor-alpha (109.2%). Platelet level was reduced (p < 0.05) in the ISP-intoxicated control rats. M3 exhibited antioxidant property, reduced levels of triglycerides, MDA and improved biochemical and hematological alterations associated with ISP toxicity. M3, however, was not effective in restoring histological changes that characterized ISP toxicity at the doses used. M3 offers chemopreventive benefits against ISP toxicity possibly through L-/T-type calcium channels blockade and modulatory actions on biochemical and antioxidant homeostasis.
Collapse
|
10
|
Abdelmoniem AM, Mohamed MF, Abdelmoniem DM, Ghozlan SAS, Abdelhamid IA. Recent Synthetic Approaches and Biological Evaluations of Amino Hexahydroquinolines and Their Spirocyclic Structures. Anticancer Agents Med Chem 2020; 19:875-915. [PMID: 30706793 DOI: 10.2174/1871520619666190131140436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 09/12/2018] [Accepted: 01/19/2019] [Indexed: 01/10/2023]
Abstract
In this review, the recent synthetic approaches of amino hexahydroquinolines and their spirocyclic structures were highlighted. The synthetic routes include, two-components, three-components or fourcomponents reactions. The two-component [3+3] atom combination reaction represents the simplest method. It involves Michael addition of the electron rich β-carbon of β-enaminones to the activated double bond of cinnamonitriles followed by cyclization to yield hexahydroquinoline compounds. The bioactivity profiles and SAR studies of these compounds were also reviewed with emphasis to the utility of these substances as antimicrobial, anticancer and antitubercular agents, as well as calcium channel modulators.
Collapse
Affiliation(s)
- Amr M Abdelmoniem
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | - Magda F Mohamed
- Chemistry Department (biochemistry branch), Faculty of Science, Cairo University, Giza, Egypt.,Department of Chemistry, Faculty of Science and Arts, Khulais, University of Jeddah, Saudi Arabia
| | | | - Said A S Ghozlan
- Chemistry Department, Faculty of Science, Cairo University, Giza, Egypt
| | | |
Collapse
|
11
|
Hosseinnejad T, Omrani-Pachin M, Heravi MM. Joint Computational and Experimental Investigations on the Synthesis and Properties of Hantzsch-type Compounds: An Overview. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190808110837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
In this review, we try to highlight the significance, mechanism propositions, computational and experimental assessments of Hantzsch dihydropyridine (DHPs) which readily oxidized to the corresponding pyridines as one of the most important aromatic heterocycles. We also try to give an overview to its ability in transfer hydrogenation, acting as hydride donors from computational and experimental points of view. Our survey is also extended to computational assessments on the structural and biological properties of Hantzsch DHPs.
Collapse
Affiliation(s)
- Tayebeh Hosseinnejad
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, Tehran, Iran
| | - Marzieh Omrani-Pachin
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, Tehran, Iran
| | - Majid M. Heravi
- Department of Chemistry, Faculty of Physics & Chemistry, Alzahra University, Tehran, Iran
| |
Collapse
|
12
|
Discovery of Michael acceptor containing 1,4-dihydropyridines as first covalent inhibitors of L-/T-type calcium channels. Bioorg Chem 2019; 91:103187. [PMID: 31419643 DOI: 10.1016/j.bioorg.2019.103187] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/23/2019] [Accepted: 08/05/2019] [Indexed: 12/14/2022]
Abstract
1,4-Dihydropyridines (DHPs) are an important class of blockers targeting different calcium channel subtypes and have great therapeutic value against cardiovascular and neurophysiologic conditions. Here, we present the design of DHP-based hexahydroquinoline derivatives as either selective or covalent inhibitors of calcium channels. These compounds were synthesized via a modified Hantzsch reaction under microwave irradiation and characterized by IR, 1H NMR, 13C NMR and mass spectra. Additionally, the proposed structure of HM12 was resolved by single crystal X-ray analysis. The abilities of the target compounds to block both L- and T-type calcium channels were evaluated by utilizing the whole-cell patch clamp technique. Our results identified covalent inhibitors of calcium channels for the first time, which could be achieved by introducing a Michael acceptor group into the ester side chain of the compounds. The proposed covalent binding between the compounds and the cysteine amino acid (Cys1492) within the DHP binding pocket of L-type calcium channel was supported by docking and pharmacophore analysis as well as a glutathione reactivity assay.
Collapse
|
13
|
Sun J, Gözde Gündüz M, Zhang J, Yu J, Guo X. Direct Enantiomeric Resolution of Seventeen Racemic 1,4-Dihydropyridine-Based Hexahydroquinoline Derivatives by HPLC. Int J Mol Sci 2019; 20:ijms20102513. [PMID: 31121823 PMCID: PMC6566779 DOI: 10.3390/ijms20102513] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/17/2019] [Accepted: 05/19/2019] [Indexed: 11/25/2022] Open
Abstract
1,4-Dihydropyridine (DHP) scaffold holds an outstanding position with its versatile pharmacological properties among all heterocyclic compounds. Although most of the commercially available DHPs are marketed as a racemic mixture, the chiral center at C-4 can lead to even opposite pharmacological activities between the enantiomers. In the present study, enantioseparation of seventeen DHP structural analogues, consisting of either pharmacologically active or newly synthesized derivatives, (M2-4, MD5, HM2, HM10, CE5, N11, N10, N7, M11, MC6-8, MC13, MD23, and 42IIP) by high-performance liquid chromatography was investigated using immobilized polysaccharide-based chiral stationary phase, Chiralpak IC column. Due to the solvent versatility of the covalently immobilized chiral stationary phase in enantiomer separation, multiple elution modes including standard normal phase, nonstandard mobile phase, and reversed phase were used to expand the possibility to find the optimum enantioselective conditions for the tested analytes. Under appropriate separation conditions, complete enantiomeric separation was obtained for nearly all compounds except MC6-8 and MC13 which contained two chiral centers. Additionally, the effects of the polar modifier, the additive, and column temperature on the chiral recognition were evaluated. The thermodynamic parameters calculated according to the linear van’t Hoff equation indicated that the chiral separations in this study were enthalpy-driven or entropy-driven. Some parameters of method validation such as linearity, limit of quantitation, and repeatability were also measured for all studied compounds to prove the reliability of the method.
Collapse
Affiliation(s)
- Jiayi Sun
- Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Miyase Gözde Gündüz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Sıhhiye, Ankara 06100, Turkey.
| | - Junyuan Zhang
- Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Jia Yu
- Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Xingjie Guo
- Shenyang Pharmaceutical University, Shenyang 110016, China.
| |
Collapse
|
14
|
Teleb M, Rizk OH, Zhang FX, Fronczek FR, Zamponi GW, Fahmy H. Design, synthesis and pharmacological evaluation of some substituted dihydropyrimidines with L-/T-type calcium channel blocking activities. Bioorg Chem 2019; 83:354-366. [DOI: 10.1016/j.bioorg.2018.10.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/19/2018] [Accepted: 10/26/2018] [Indexed: 12/24/2022]
|
15
|
Ioele G, Gündüz MG, Spatari C, De Luca M, Grande F, Ragno G. A New Generation of Dihydropyridine Calcium Channel Blockers: Photostabilization of Liquid Formulations Using Nonionic Surfactants. Pharmaceutics 2019; 11:pharmaceutics11010028. [PMID: 30641992 PMCID: PMC6359235 DOI: 10.3390/pharmaceutics11010028] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/03/2019] [Accepted: 01/08/2019] [Indexed: 12/21/2022] Open
Abstract
The stability profile of a new 1,4-dihydropyridine derivative (DHP), representative of a series with a hexahydroquinoline ring, was studied to design light-stable liquid formulations. This molecule, named M3, has been shown among the analogs to have a high capacity to block both L- and T-type calcium channels. The ethanol solution of the drug was subjected to a photodegradation test, in accordance with standard rules. The concentrations of the drug and its byproducts were estimated using multivariate curve resolution, applied to the spectral data collected during the test. The improvement of both the photostability and water solubility of M3 was investigated by adding the surfactant polysorbate 20 in a 1:5 ratio to aqueous solutions of the drug. These formulations were exposed to stressing light in containers of bleu polyethylene terephthalate (PET), amber PET, and covered amber PET. The best results were obtained when using the covered amber PET container, reaching a degradation percentage of the drug less than 5% after 12 h under an irradiance power of 450 W/m2. The stability of the compound was compared to that of nimodipine (NIM) under the same conditions.
Collapse
Affiliation(s)
- Giuseppina Ioele
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy.
| | - Miyase Gözde Gündüz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara 06100, Turkey.
| | - Claudia Spatari
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy.
| | - Michele De Luca
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy.
| | - Fedora Grande
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy.
| | - Gaetano Ragno
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, 87036 Rende, Italy.
| |
Collapse
|
16
|
5-Oxo-hexahydroquinoline: an attractive scaffold with diverse biological activities. Mol Divers 2018; 23:471-508. [PMID: 30390186 DOI: 10.1007/s11030-018-9886-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/17/2018] [Indexed: 12/31/2022]
Abstract
5-Oxo-hexahydroquinoline (5-oxo-HHQ) represents a biologically attractive fused heterocyclic core. Various synthetic analogs of 5-oxo-HHQ have been synthesized and assessed for different biological activities. Some derivatives have exhibited myorelaxant, analgesic, anticancer, antibacterial, antifungal, antitubercular, antimalarial, antioxidant, anti-inflammatory, multidrug resistance reversal, anti-Alzheimer, neuroprotective, antidiabetic, antidyslipidemic and antiosteoporotic activities. This review provides a comprehensive report regarding the preparation and pharmacological characterization of 5-oxo-HHQ derivatives that have been reported so far. This information will be beneficial for medicinal chemists in the field of drug discovery to design and develop new and potent therapeutical agents bearing the 5-oxo-HHQ nucleus.
Collapse
|
17
|
Yıdırım SÖ, Büyükmumcu Z, Butcher RJ, Çetin G, Şimşek R, Şafak C. Synthesis, structural characterization and density functional studies of ethyl 4-(biphenyl-4-yl)-2,6,6-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate A non-merohedral twinned structure. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.02.103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
18
|
Snutch TP, Zamponi GW. Recent advances in the development of T-type calcium channel blockers for pain intervention. Br J Pharmacol 2018; 175:2375-2383. [PMID: 28608534 PMCID: PMC5980537 DOI: 10.1111/bph.13906] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/19/2017] [Accepted: 06/05/2017] [Indexed: 01/15/2023] Open
Abstract
Cav 3.2 T-type calcium channels are important regulators of pain signals in the afferent pain pathway, and their activities are dysregulated during various chronic pain states. Therefore, it is reasonable to predict that inhibiting T-type calcium channels in dorsal root ganglion neurons and in the spinal dorsal horn can be targeted for pain relief. This is supported by early pharmacological studies with T-type channel blockers, such as ethosuximide, and by analgesic effects of siRNA depletion of Cav 3.2 channels. In the past 5 years, considerable effort has been applied towards identifying novel classes of T-type calcium channel blockers. Here, we review recent developments in the discovery of novel classes of T-type calcium channel blockers, and their analgesic effects in animal models of pain and in clinical trials. LINKED ARTICLES This article is part of a themed section on Recent Advances in Targeting Ion Channels to Treat Chronic Pain. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.12/issuetoc.
Collapse
Affiliation(s)
- Terrance P Snutch
- Michael Smith Laboratories and Djavad Mowafaghian Centre for Brain HealthUniversity of British ColumbiaVancouverBCCanada
| | - Gerald W Zamponi
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute and Alberta Children's Hospital Research Institute, Cumming School of MedicineUniversity of CalgaryCalgaryABCanada
| |
Collapse
|
19
|
Schaller D, Gündüz MG, Zhang FX, Zamponi GW, Wolber G. Binding mechanism investigations guiding the synthesis of novel condensed 1,4-dihydropyridine derivatives with L-/T-type calcium channel blocking activity. Eur J Med Chem 2018; 155:1-12. [PMID: 29843108 DOI: 10.1016/j.ejmech.2018.05.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/14/2018] [Accepted: 05/20/2018] [Indexed: 12/20/2022]
Abstract
Nifedipine and isradipine are prominent examples of calcium channel blockers with a 1,4-dihydropyridine (DHP) scaffold. Although successfully used in clinics since decades for the treatment of hypertension, the binding mechanism to their target, the L-type voltage-gated calcium channel Cav1.2, is still incompletely understood. Recently, novel DHP derivatives with a condensed ring system have been discovered that show distinct selectivity profiles to different calcium channel subtypes. This property renders this DHP class as a promising tool to achieve selectivity towards distinct calcium channel subtypes. In this study, we identified a common binding mode for prominent DHPs nifedipine and isradipine using docking and pharmacophore analysis that is also able to explain the structure-activity relationship of a small subseries of DHP derivatives with a condensed ring system. These findings were used to guide the synthesis of twenty-two novel DHPs. An extensive characterization using 1H NMR, 13C NMR, mass spectra and elemental analysis was followed by whole cell patch clamp assays for analyzing activity at Cav1.2 and Cav3.2. Two compounds were identified with significant activity against Cav1.2. Additionally, we identified four compounds active against Cav3.2 of which three were selective over Cav1.2. Novel binding modes were analyzed using docking and pharmacophore analysis as well as molecular dynamics simulations.
Collapse
Affiliation(s)
- David Schaller
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, Berlin, 14195, Germany
| | - Miyase Gözde Gündüz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Sıhhiye, Ankara, 06100, Turkey.
| | - Fang Xiong Zhang
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive NW, Calgary, T2N 4N1, Canada
| | - Gerald W Zamponi
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive NW, Calgary, T2N 4N1, Canada
| | - Gerhard Wolber
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmacy, Freie Universität Berlin, Königin-Luise-Str. 2+4, Berlin, 14195, Germany
| |
Collapse
|
20
|
Fan Q, Li P, Yan H. Photophysical properties of 2,6-unsubstituented 1,4-dihydropyridines: Experimental and theoretical studies. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
21
|
Racemic X-ray structure of L-type calcium channel antagonist Calciseptine prepared by total chemical synthesis. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9198-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
22
|
Gündüz MG, Ragno G, Şimşek R, De Luca M, Şafak C, Grande F, El-Khouly A, İşli F, Yildirim Ş, Öztürk Fincan GS, Ioele G. Synthesis and photodegradation studies of analogues of muscle relaxant 1,4-dihydropyridine compounds. ACTA PHARMACEUTICA 2017; 67:341-355. [PMID: 28858832 DOI: 10.1515/acph-2017-0026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/10/2017] [Indexed: 12/11/2022]
Abstract
This paper describes the synthesis of 1,4-dihydropyridine compounds (DHPs) endowed with good muscle relaxant activity and stability to light. Six new condensed DHPs were synthesized by the microwave irradiation method. A long-chain ester moiety [2-(methacryloyloxy)ethyl] and various substituents on the phenyl ring were demonstrated to affect the muscle relaxant activity occurring in isolated rabbit gastric fundus smooth muscle strips. Forced photodegradation conditions were applied to the molecules according to the ICH rules. The degradation profile of the drugs was monitored by spectrophotometry coupled with the multivariate curve resolution technique. Formation of the oxidized pyridine derivative was observed for all the studied DHPs, except for one compound, which showed very fast degradation and formation of a second photo-product. Pharmacological tests on the molecules showed a good muscle relaxing effect, with a mechanism similar to that of nifedipine, however, proving to be more stable to light.
Collapse
Affiliation(s)
- Miyase Gözde Gündüz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Hacettepe University , 06100 , Ankara , Turkey
| | - Gaetano Ragno
- Department of Pharmacy, Health and Nutritional Sciences , University of Calabria , 87036 Rende (CS), Italy
| | - Rahime Şimşek
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Hacettepe University , 06100 , Ankara , Turkey
| | - Michele De Luca
- Department of Pharmacy, Health and Nutritional Sciences , University of Calabria , 87036 Rende (CS), Italy
| | - Cihat Şafak
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Hacettepe University , 06100 , Ankara , Turkey
| | - Fedora Grande
- Department of Pharmacy, Health and Nutritional Sciences , University of Calabria , 87036 Rende (CS), Italy
| | - Ahmed El-Khouly
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Hacettepe University , 06100 , Ankara , Turkey
| | - Fatma İşli
- Department of Pharmacology, Faculty of Medicine , Gazi University , 06560 , Ankara , Turkey
| | - Şeniz Yildirim
- Department of Pharmacology, Faculty of Medicine , Gazi University , 06560 , Ankara , Turkey
| | | | - Giuseppina Ioele
- Department of Pharmacy, Health and Nutritional Sciences , University of Calabria , 87036 Rende (CS), Italy
| |
Collapse
|
23
|
Baydar E, Gündüz MG, Krishna VS, Şimşek R, Sriram D, Yıldırım SÖ, Butcher RJ, Şafak C. Synthesis, crystal structure and antimycobacterial activities of 4-indolyl-1,4-dihydropyridine derivatives possessing various ester groups. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3087-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
24
|
Ozer EK, Gunduz MG, El-Khouly A, Sara Y, Simsek R, Iskit AB, Safak C. Synthesis of fused 1,4-dihydropyridines as potential calcium channel blockers. TURKISH JOURNAL OF BIOCHEMISTRY 2017. [DOI: 10.1515/tjb-2016-0247] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Objective
The aim of this study was to synthesize ten 1,4-dihydropyridine (DHP) derivatives in which substituted cyclohexane rings were fused to the DHP ring and to determine how different ester groups and the benzoyl substituent introduced in 4-phenyl ring affected their calcium channel blocking activity.
Methods
A microwave-assisted one-pot method was applied for the synthesis of compound 1–5 according to a modified Hantzsch reaction. The benzoyl moiety was introduced in the 4-phenyl ring of these dihydropyridines by refluxing with benzoyl chloride in acetone in the presence of anhydrous potassium carbonate. Synthesized products were characterized by elemental analysis, IR, 1H-NMR and 13C-NMR spectroscopy. The inhibitory actions of compounds 1–10 on calcium channel blocking activity were tested on isolated rat aorta preparations.
Results
The obtained pharmacological results showed that although all compounds are potent relaxing agents on isolated rat aorta smooth muscle, introduction of a benzoyloxy substitiuent on the phenyl ring (compound 6–10) decreased the relaxant effect of these compunds.
Conclusion
The reported 1,4-DHP derivatives have calcium channel blocking activity on rat aorta smooth muscle.
Collapse
Affiliation(s)
- Erdem Kamil Ozer
- Department of Pharmacology , Faculty of Medicine, Selcuk University , 42250, Selcuklu , Konya , Turkey , Phone: +90 332 2243839
| | - Miyase Gozde Gunduz
- Department of Pharmaceutical Chemistry , Faculty of Pharmacy , Hacettepe University , 06100, Ankara , Turkey
| | - Ahmed El-Khouly
- Department of Pharmaceutical Chemistry , Faculty of Pharmacy , Hacettepe University , 06100, Ankara , Turkey
| | - Yildirim Sara
- Department of Pharmacology , Faculty of Medicine , Hacettepe University , Ankara , Turkey
| | - Rahime Simsek
- Department of Pharmaceutical Chemistry , Faculty of Pharmacy , Hacettepe University , 06100, Ankara , Turkey
| | - Alper Bektas Iskit
- Department of Pharmacology , Faculty of Medicine , Hacettepe University , Ankara , Turkey
| | - Cihat Safak
- Department of Pharmaceutical Chemistry , Faculty of Pharmacy , Hacettepe University , 06100, Ankara , Turkey
| |
Collapse
|
25
|
Teleb M, Zhang FX, Farghaly AM, Aboul Wafa OM, Fronczek FR, Zamponi GW, Fahmy H. Synthesis of new N3-substituted dihydropyrimidine derivatives as L-/T- type calcium channel blockers. Eur J Med Chem 2017; 134:52-61. [PMID: 28399450 DOI: 10.1016/j.ejmech.2017.03.080] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 03/17/2017] [Accepted: 03/31/2017] [Indexed: 12/27/2022]
Abstract
Cardiovascular diseases (CVDs) are the main cause of deaths worldwide. Up-to-date, hypertension is the most significant contributing factor to CVDs. Recent clinical studies recommend calcium channel blockers (CCBs) as effective treatment alone or in combination with other medications. Being the most clinically useful CCBs, 1,4-dihydropyridines (DHPs) attracted great interest in improving potency and selectivity. However, the short plasma half-life which may be attributed to the metabolic oxidation to the pyridine-counterparts is considered as a major limitation for this class. Among the most efficient modifications of the DHP scaffold, is the introduction of biologically active N3-substituted dihydropyrimidine mimics (DHPMs). Again, some potent DHPMs showed only in vitro activity due to first pass effect through hydrolysis and removal of the N3-substitutions. Herein, the synthesis of new N3-substituted DHPMs with various functionalities linked to the DHPM core via two-carbon spacer to guard against possible metabolic inactivation is described. It was designed to keep close structural similarities to clinically efficient DHPs and the reported lead DHPMs analogues, while attempting to improve the pharmacokinetic properties through better metabolic stability. Applying whole batch clamp technique, five compounds showed promising L- and T- type calcium channel blocking activity and were identified as lead compounds. Structure requirements for selectivity against Cav1.2 as well against Cav3.2 are described.
Collapse
Affiliation(s)
- Mohamed Teleb
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Fang-Xiong Zhang
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive NW, Calgary T2N 4N1, Canada
| | - Ahmed M Farghaly
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Omaima M Aboul Wafa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Frank R Fronczek
- Department of Chemistry, College of Science, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Gerald W Zamponi
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive NW, Calgary T2N 4N1, Canada
| | - Hesham Fahmy
- Department of Pharmaceutical Sciences, College of Pharmacy, South Dakota State University, Brookings, SD 57007, USA.
| |
Collapse
|
26
|
Drapak I, Perekhoda L, Tsapko T, Berezniakova N, Tsapko Y. Cardiovascular Calcium Channel Blockers: Historical Overview, Development and New Approaches in Design. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2837] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Iryna Drapak
- Department of General, Bioinorganic, Physical and Colloidal Chemistry; Lvivs'kyj nacional'nyj medychnyj universytet imeni Danyla Halyc'koho; Lviv 58666 Ukraine
| | - Lina Perekhoda
- Department of Medicinal Chemistry; Nacional'nyj farmacevtychnyj universytet; Kharkiv 199318 Ukraine
| | - Tetiana Tsapko
- Department of Medicinal Chemistry; Nacional'nyj farmacevtychnyj universytet; Kharkiv 199318 Ukraine
| | - Natalia Berezniakova
- Department of Medicinal Chemistry; Nacional'nyj farmacevtychnyj universytet; Kharkiv 199318 Ukraine
| | - Yevgen Tsapko
- Department of Inorganic Chemistry; Nacional'nyj farmacevtychnyj universytet; Kharkiv 199318 Ukraine
| |
Collapse
|
27
|
Synthesis and biological evaluation of novel N3- substituted dihydropyrimidine derivatives as T-type calcium channel blockers and their efficacy as analgesics in mouse models of inflammatory pain. Bioorg Med Chem 2017; 25:1926-1938. [DOI: 10.1016/j.bmc.2017.02.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 02/02/2017] [Accepted: 02/08/2017] [Indexed: 12/22/2022]
|
28
|
Gündüz MG, da Silva CDB, Zanotto GM, Toldo JM, Şimşek R, Şafak C, Gonçalves PFB, Rodembusch FS. Theoretical and experimental study of the ground and excited states of 1,4-dihydropyridine based hexahydroquinoline derivatives achieved by microwave irradiation. NEW J CHEM 2017. [DOI: 10.1039/c7nj02226c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The photophysical study indicates ICT state for 1,4-dihydropyridine based hexahydroquinoline derivatives.
Collapse
Affiliation(s)
- Miyase Gözde Gündüz
- Hacettepe Univesity
- Faculty of Pharmacy
- Dept. of Pharmaceutical Chemistry
- 06100 Ankara
- Turkey
| | - Claudia de Brito da Silva
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada
- Universidade Federal do Rio Grande do Sul – Instituto de Química
- CEP 91501-970 Porto Alegre-RS
- Brazil
| | - Gabriel Modernell Zanotto
- Grupo de Química Teórica
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Porto Alegre-RS
- Brazil
| | - Josene Maria Toldo
- Grupo de Química Teórica
- Instituto de Química
- Universidade Federal do Rio Grande do Sul
- Porto Alegre-RS
- Brazil
| | - Rahime Şimşek
- Hacettepe Univesity
- Faculty of Pharmacy
- Dept. of Pharmaceutical Chemistry
- 06100 Ankara
- Turkey
| | - Cihat Şafak
- Hacettepe Univesity
- Faculty of Pharmacy
- Dept. of Pharmaceutical Chemistry
- 06100 Ankara
- Turkey
| | | | - Fabiano Severo Rodembusch
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada
- Universidade Federal do Rio Grande do Sul – Instituto de Química
- CEP 91501-970 Porto Alegre-RS
- Brazil
| |
Collapse
|
29
|
An efficient solvent-free synthesis of isoxazolyl-1,4-dihydropyridines on solid support SiO2 under microwave irradiation. MONATSHEFTE FUR CHEMIE 2016. [DOI: 10.1007/s00706-016-1657-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
|
30
|
Photodegradation studies of 1,4-dihydropyridine compounds by MCR analysis on UV spectral data. Future Med Chem 2016; 8:107-15. [DOI: 10.4155/fmc.15.172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background: 1,4-Dihydropyridines (DHPs) are well-known light-sensitive compounds. Photostability studies are necessary to ensure safety in therapy. Materials & Methods: Photodegradation experiments on 15 condensed DHP derivatives were made according to the International Conference on Harmonization rules. Degradation profiles were monitored by spectrophotometry and the data were processed by multivariate curve resolution analysis. Results: The analysis of the spectral data showed the formation of a single photoproduct from two DHPs, due to the aromatization of the pyridine ring. Traces of a second photoproduct were revealed in 12 DHPs and a third photoproduct was verified only in one case. Conclusion: DHPs showed high stability when fluorine was in the position R1 of the phenyl ring or simultaneously present in R1 and R2 positions. In contrast, the presence of chlorine in R1 or R2 strongly increased the degradation.
Collapse
|
31
|
Zamponi GW, Han C, Waxman SG. Voltage-Gated Ion Channels as Molecular Targets for Pain. Transl Neurosci 2016. [DOI: 10.1007/978-1-4899-7654-3_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
32
|
Zamponi GW. Targeting voltage-gated calcium channels in neurological and psychiatric diseases. Nat Rev Drug Discov 2015; 15:19-34. [DOI: 10.1038/nrd.2015.5] [Citation(s) in RCA: 254] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
33
|
|
34
|
Zamponi GW, Striessnig J, Koschak A, Dolphin AC. The Physiology, Pathology, and Pharmacology of Voltage-Gated Calcium Channels and Their Future Therapeutic Potential. Pharmacol Rev 2015; 67:821-70. [PMID: 26362469 PMCID: PMC4630564 DOI: 10.1124/pr.114.009654] [Citation(s) in RCA: 701] [Impact Index Per Article: 77.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Voltage-gated calcium channels are required for many key functions in the body. In this review, the different subtypes of voltage-gated calcium channels are described and their physiologic roles and pharmacology are outlined. We describe the current uses of drugs interacting with the different calcium channel subtypes and subunits, as well as specific areas in which there is strong potential for future drug development. Current therapeutic agents include drugs targeting L-type Ca(V)1.2 calcium channels, particularly 1,4-dihydropyridines, which are widely used in the treatment of hypertension. T-type (Ca(V)3) channels are a target of ethosuximide, widely used in absence epilepsy. The auxiliary subunit α2δ-1 is the therapeutic target of the gabapentinoid drugs, which are of value in certain epilepsies and chronic neuropathic pain. The limited use of intrathecal ziconotide, a peptide blocker of N-type (Ca(V)2.2) calcium channels, as a treatment of intractable pain, gives an indication that these channels represent excellent drug targets for various pain conditions. We describe how selectivity for different subtypes of calcium channels (e.g., Ca(V)1.2 and Ca(V)1.3 L-type channels) may be achieved in the future by exploiting differences between channel isoforms in terms of sequence and biophysical properties, variation in splicing in different target tissues, and differences in the properties of the target tissues themselves in terms of membrane potential or firing frequency. Thus, use-dependent blockers of the different isoforms could selectively block calcium channels in particular pathologies, such as nociceptive neurons in pain states or in epileptic brain circuits. Of important future potential are selective Ca(V)1.3 blockers for neuropsychiatric diseases, neuroprotection in Parkinson's disease, and resistant hypertension. In addition, selective or nonselective T-type channel blockers are considered potential therapeutic targets in epilepsy, pain, obesity, sleep, and anxiety. Use-dependent N-type calcium channel blockers are likely to be of therapeutic use in chronic pain conditions. Thus, more selective calcium channel blockers hold promise for therapeutic intervention.
Collapse
Affiliation(s)
- Gerald W Zamponi
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada (G.W.Z.); Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences, University of Innsbruck, Innsbruck, Austria (J.S., A.K.); and Department of Neuroscience, Physiology, and Pharmacology, Division of Biosciences, University College London, London, United Kingdom (A.C.D.)
| | - Joerg Striessnig
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada (G.W.Z.); Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences, University of Innsbruck, Innsbruck, Austria (J.S., A.K.); and Department of Neuroscience, Physiology, and Pharmacology, Division of Biosciences, University College London, London, United Kingdom (A.C.D.)
| | - Alexandra Koschak
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada (G.W.Z.); Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences, University of Innsbruck, Innsbruck, Austria (J.S., A.K.); and Department of Neuroscience, Physiology, and Pharmacology, Division of Biosciences, University College London, London, United Kingdom (A.C.D.)
| | - Annette C Dolphin
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada (G.W.Z.); Department of Pharmacology and Toxicology, Institute of Pharmacy, Center for Molecular Biosciences, University of Innsbruck, Innsbruck, Austria (J.S., A.K.); and Department of Neuroscience, Physiology, and Pharmacology, Division of Biosciences, University College London, London, United Kingdom (A.C.D.)
| |
Collapse
|
35
|
Analgesic effect of a broad-spectrum dihydropyridine inhibitor of voltage-gated calcium channels. Pflugers Arch 2015; 467:2485-93. [PMID: 26286466 DOI: 10.1007/s00424-015-1725-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 07/20/2015] [Accepted: 07/23/2015] [Indexed: 01/08/2023]
Abstract
Voltage-activated calcium channels are important facilitators of nociceptive transmission in the primary afferent pathway. Consequently, molecules that block these channels are of potential use as pain therapeutics. Our group has recently reported on the identification of a novel class of dihydropyridines (DHPs) that included compounds with preferential selectivity for T-type over L-type channels. Among those compounds, M4 was found to be an equipotent inhibitor of both Cav1.2 L- and Cav3.2 T-type calcium channels. Here, we have further characterized the effects of this compound on other types of calcium channels and examined its analgesic effect when delivered either spinally (i.t.) or systemically (i.p.) to mice. Both delivery routes resulted in antinociception in a model of acute pain. Furthermore, M4 was able to reverse mechanical hyperalgesia produced by nerve injury when delivered intrathecally. M4 retained partial activity when delivered to Cav3.2 null mice, indicating that this compound acts on multiple targets. Additional whole-cell patch clamp experiments in transfected tsA-201 cells revealed that M4 also effectively blocks Cav3.3 (T-type) and Cav2.2 (N-type) currents. Altogether, our data indicate that broad-spectrum inhibition of multiple calcium channel subtypes can lead to potent analgesia in rodents.
Collapse
|
36
|
Liu X, Yu H, Zhao X, Huang XR. Molecular simulations study of novel 1,4-dihydropyridines derivatives with a high selectivity for Cav3.1 calcium channel. Protein Sci 2015; 24:1737-47. [PMID: 26256672 DOI: 10.1002/pro.2763] [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: 05/06/2015] [Revised: 07/13/2015] [Accepted: 08/03/2015] [Indexed: 12/19/2022]
Abstract
1,4-Dihydropyridines (DHPs) have been developed to treat hypertension, angina, and nerve system disease. They are thought to mainly target the L-type calcium channels, but low selectivity prompts them to block Cav1.2 and Cav3.1 channels simultaneously. Recently, some novel DHPs with different hydrophobic groups have been synthesized and among them M12 has a higher selectivity for Cav3.1. However, the structural information about Cav3.1-DHPs complexes is not available in the experiment. Thus, we combined homology modeling, molecular docking, molecular dynamics simulations, and binding free energy calculations to quantitatively elucidate the inhibition mechanism of DHPs. The calculated results indicate that our model is in excellent agreement with experimental results. On the basis of conformational analysis, we identify the main interactions between DHPs and calcium channels and further elaborate on the different selectivity of ligands from the micro perspective. In conjunction with energy distribution, we propose that the binding sites of Cav3.1-DHPs is characterized by several interspersed hydrophobic amino acid residues on the IIIS6 and IVS6 segments. We also speculate the favorable function groups on prospective DHPs. Besides, our model provides important information for further mutagenesis experiments.
Collapse
Affiliation(s)
- Xiaoguang Liu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Hui Yu
- Chemistry Teaching Center, College of Chemistry and Biology, Beihua University, Jilin, 132013, People's Republic of China
| | - Xi Zhao
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| | - Xu-Ri Huang
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, 130023, People's Republic of China
| |
Collapse
|
37
|
Gadotti VM, Caballero AG, Berger ND, Gladding CM, Chen L, Pfeifer TA, Zamponi GW. Small organic molecule disruptors of Cav3.2 - USP5 interactions reverse inflammatory and neuropathic pain. Mol Pain 2015; 11:12. [PMID: 25889575 PMCID: PMC4364099 DOI: 10.1186/s12990-015-0011-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2015] [Accepted: 03/02/2015] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Cav3.2 channels facilitate nociceptive transmission and are upregulated in DRG neurons in response to nerve injury or peripheral inflammation. We reported that this enhancement of Cav3.2 currents in afferent neurons is mediated by deubiquitination of the channels by the deubiquitinase USP5, and that disrupting USP5/Cav3.2 channel interactions protected from inflammatory and neuropathic pain. RESULTS Here we describe the development of a small molecule screening assay for USP5-Cav3.2 disruptors, and report on two hits of a ~5000 compound screen - suramin and the flavonoid gossypetin. In mouse models of inflammatory pain and neuropathic pain, both suramin and gossypetin produced dose-dependent and long-lasting mechanical anti-hyperalgesia that was abolished or greatly attenuated in Cav3.2 null mice. Suramin and Cav3.2/USP5 Tat-disruptor peptides were also tested in models of diabetic neuropathy and visceral pain, and provided remarkable protection. CONCLUSIONS Overall, our findings provide proof of concept for a new class of analgesics that target T-type channel deubiquitination.
Collapse
Affiliation(s)
- Vinicius M Gadotti
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive, NW, Calgary, T2N 4N1, Canada.
| | - Agustin Garcia Caballero
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive, NW, Calgary, T2N 4N1, Canada.
| | - N Daniel Berger
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive, NW, Calgary, T2N 4N1, Canada.
| | - Clare M Gladding
- Centre for Drug Research and Development, 2405 Wesbrook Mall - 4th Floor, Vancouver, BC, V6T 1Z3, Canada.
| | - Lina Chen
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive, NW, Calgary, T2N 4N1, Canada.
| | - Tom A Pfeifer
- Centre for Drug Research and Development, 2405 Wesbrook Mall - 4th Floor, Vancouver, BC, V6T 1Z3, Canada.
| | - Gerald W Zamponi
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, 3330 Hospital Drive, NW, Calgary, T2N 4N1, Canada.
| |
Collapse
|
38
|
Bladen C, McDaniel SW, Gadotti VM, Petrov RR, Berger ND, Diaz P, Zamponi GW. Characterization of novel cannabinoid based T-type calcium channel blockers with analgesic effects. ACS Chem Neurosci 2015; 6:277-87. [PMID: 25314588 PMCID: PMC4372069 DOI: 10.1021/cn500206a] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
![]()
Low-voltage-activated
(T-type) calcium channels are important regulators
of the transmission of nociceptive information in the primary afferent
pathway and finding ligands that modulate these channels is a key
focus of the drug discovery field. Recently, we characterized a set
of novel compounds with mixed cannabinoid receptor/T-type channel
blocking activity and examined their analgesic effects in animal models
of pain. Here, we have built on these previous findings and synthesized
a new series of small organic compounds. We then screened them using
whole-cell voltage clamp techniques to identify the most potent T-type
calcium channel inhibitors. The two most potent blockers (compounds 9 and 10) were then characterized using radioligand
binding assays to determine their affinity for CB1 and CB2 receptors.
The structure–activity relationship and optimization studies
have led to the discovery of a new T-type calcium channel blocker,
compound 9. Compound 9 was efficacious in
mediating analgesia in mouse models of acute inflammatory pain and
in reducing tactile allodynia in the partial nerve ligation model.
This compound was shown to be ineffective in Cav3.2 T-type calcium
channel null mice at therapeutically relevant concentrations, and
it caused no significant motor deficits in open field tests. Taken
together, our data reveal a novel class of compounds whose physiological
and therapeutic actions are mediated through block of Cav3.2 calcium
channels.
Collapse
Affiliation(s)
- Chris Bladen
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Steven W. McDaniel
- Core
Laboratory for Neuromolecular Production, The University of Montana, Missoula, Montana 59812, United States
| | - Vinicius M. Gadotti
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Ravil R. Petrov
- Core
Laboratory for Neuromolecular Production, The University of Montana, Missoula, Montana 59812, United States
| | - N. Daniel Berger
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Philippe Diaz
- Core
Laboratory for Neuromolecular Production, The University of Montana, Missoula, Montana 59812, United States
| | - Gerald W. Zamponi
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 1N4, Canada
| |
Collapse
|
39
|
Mesirca P, Torrente AG, Mangoni ME. Functional role of voltage gated Ca(2+) channels in heart automaticity. Front Physiol 2015; 6:19. [PMID: 25698974 PMCID: PMC4313592 DOI: 10.3389/fphys.2015.00019] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/12/2015] [Indexed: 01/08/2023] Open
Abstract
Pacemaker activity of automatic cardiac myocytes controls the heartbeat in everyday life. Cardiac automaticity is under the control of several neurotransmitters and hormones and is constantly regulated by the autonomic nervous system to match the physiological needs of the organism. Several classes of ion channels and proteins involved in intracellular Ca(2+) dynamics contribute to pacemaker activity. The functional role of voltage-gated calcium channels (VGCCs) in heart automaticity and impulse conduction has been matter of debate for 30 years. However, growing evidence shows that VGCCs are important regulators of the pacemaker mechanisms and play also a major role in atrio-ventricular impulse conduction. Incidentally, studies performed in genetically modified mice lacking L-type Cav1.3 (Cav1.3(-/-)) or T-type Cav3.1 (Cav3.1(-/-)) channels show that genetic inactivation of these channels strongly impacts pacemaking. In cardiac pacemaker cells, VGCCs activate at negative voltages at the beginning of the diastolic depolarization and importantly contribute to this phase by supplying inward current. Loss-of-function of these channels also impairs atrio-ventricular conduction. Furthermore, inactivation of Cav1.3 channels promotes also atrial fibrillation and flutter in knockout mice suggesting that these channels can play a role in stabilizing atrial rhythm. Genomic analysis demonstrated that Cav1.3 and Cav3.1 channels are widely expressed in pacemaker tissue of mice, rabbits and humans. Importantly, human diseases of pacemaker activity such as congenital bradycardia and heart block have been attributed to loss-of-function of Cav1.3 and Cav3.1 channels. In this article, we will review the current knowledge on the role of VGCCs in the generation and regulation of heart rate and rhythm. We will discuss also how loss of Ca(2+) entry through VGCCs could influence intracellular Ca(2+) handling and promote atrial arrhythmias.
Collapse
Affiliation(s)
- Pietro Mesirca
- Laboratory of Excellence in Ion Channel Science and Therapeutics, Département de Physiologie, Institut de Génomique Fonctionnelle Montpellier, France ; UMR-5203, Centre National de la Recherche Scientifique, Universités de Montpellier 1 and 2 Montpellier, France ; INSERM U 1191, Département de Physiologie, Universités de Montpellier 1 and 2 Montpellier, France
| | - Angelo G Torrente
- Laboratory of Excellence in Ion Channel Science and Therapeutics, Département de Physiologie, Institut de Génomique Fonctionnelle Montpellier, France ; UMR-5203, Centre National de la Recherche Scientifique, Universités de Montpellier 1 and 2 Montpellier, France ; INSERM U 1191, Département de Physiologie, Universités de Montpellier 1 and 2 Montpellier, France
| | - Matteo E Mangoni
- Laboratory of Excellence in Ion Channel Science and Therapeutics, Département de Physiologie, Institut de Génomique Fonctionnelle Montpellier, France ; UMR-5203, Centre National de la Recherche Scientifique, Universités de Montpellier 1 and 2 Montpellier, France ; INSERM U 1191, Département de Physiologie, Universités de Montpellier 1 and 2 Montpellier, France
| |
Collapse
|
40
|
Bladen C, Hamid J, Souza IA, Zamponi GW. Block of T-type calcium channels by protoxins I and II. Mol Brain 2014; 7:36. [PMID: 24886690 PMCID: PMC4030284 DOI: 10.1186/1756-6606-7-36] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 05/05/2014] [Indexed: 01/08/2023] Open
Abstract
Background Low-voltage-activated (T-type) calcium channels play a crucial role in a number of physiological processes, including neuronal and cardiac pacemaker activity and nociception. Therefore, finding specific modulators and/or blockers of T-type channels has become an important field of drug discovery. One characteristic of T-type calcium channels is that they share several structural similarities with voltage-gated sodium channels (VGSCs). We therefore hypothesized that binding sites for certain sodium channel blocking peptide toxins may be present in T-type calcium channels. Findings The sodium channel blocker ProTx I tonically blocked native and transiently expressed T-type channels in the sub- to low micro molar range with at least a ten-fold selectivity for the T-type calcium channel hCav3.1 over hCav3.3, and more than one hundred fold selectivity over hCav3.2. Using chimeras of hCav3.1 and hCav3.3, we determined that the domain IV region of hCav3.1 is a major determinant of toxin affinity, with a minor contribution from domain II. Further analysis revealed several residues in a highly conserved region between T-type and sodium channels that may correspond to toxin binding sites. Mutagenesis of several of these residues on an individual basis, however, did not alter the blocking effects of the toxin. ProTx II on the other hand preferentially blocked hCav3.2 and significantly shifted the steady state inactivation of this channel. Conclusions ProTx I blocks hCav3.1 both selectively and with high affinity. Domain IV appears to play a major role in this selectivity with some contribution from domain II. Given the structural similarities between sodium and T-type calcium channels and the apparent conservation in toxin binding sites, these data could provide insights into the development and synthesis of novel T-type channel antagonists.
Collapse
Affiliation(s)
| | | | | | - Gerald W Zamponi
- Department of Physiology & Pharmacology, Hotchkiss Brain Institute, University of Calgary, 3330 Hospital Drive, Calgary, NW, Canada.
| |
Collapse
|
41
|
Cardiac functions of voltage-gated Ca(2+) channels: role of the pharmacoresistant type (E-/R-Type) in cardiac modulation and putative implication in sudden unexpected death in epilepsy (SUDEP). Rev Physiol Biochem Pharmacol 2014; 167:115-39. [PMID: 25280639 DOI: 10.1007/112_2014_21] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Voltage-gated Ca(2+) channels (VGCCs) are ubiquitous in excitable cells. These channels play key roles in many physiological events like cardiac regulation/pacemaker activity due to intracellular Ca(2+) transients. In the myocardium, the Cav1 subfamily (L-type: Cav1.2 and Cav1.3) is the main contributor to excitation-contraction coupling and/or pacemaking, whereas the Cav3 subfamily (T-type: Cav3.1 and Cav3.2) is important in rhythmically firing of the cardiac nodal cells. No established cardiac function has been attributed to the Cav2 family (E-/R-type: Cav2.3) despite accumulating evidence of cardiac dysregulation observed upon deletion of the Cav2.3 gene, the only member of this family so far detected in cardiomyocytes. In this review, we summarize the pathophysiological changes observed after ablation of the E-/R-type VGCC and propose a cardiac mechanism of action for this channel. Also, considering the role played by this channel in epilepsy and its reported sensitivity to antiepileptic drugs, a putative involvement of this channel in the cardiac mechanism of sudden unexpected death in epilepsy is also discussed.
Collapse
|