1
|
El Azab EF, Saleh AM, Yousif SO, Mazhari BBZ, Abu Alrub H, Elfaki EM, Hamza A, Abdulmalek S. New insights into geraniol's antihemolytic, anti-inflammatory, antioxidant, and anticoagulant potentials using a combined biological and in silico screening strategy. Inflammopharmacology 2022; 30:1811-1833. [PMID: 35932440 DOI: 10.1007/s10787-022-01039-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 07/15/2022] [Indexed: 11/05/2022]
Abstract
The study aims to assess the antihemolytic and antioxidant activities of geraniol versus 2, 2'-azobis, 2-amidinopropane dihydro-chloride- (AAPH-) induced oxidative damage and hemolysis to erythrocytes and its anti-inflammatory potential against lipopolysaccharide- (LPS-) induced inflammation in white blood cells (WBCs) with a focus on its integrated computational strategies against different targeted receptors participating in inflammation and coagulation. The rats' erythrocyte suspension was incubated with different geraniol concentrations. Molecular docking and simulation were used to explore the possible interaction patterns of geraniol against the potential targeted proteins for therapeutic screening. The results displayed that geraniol had a prolonged noteworthy effect on activated partial thromboplastin time and thromboplastin time. Geraniol displayed strong antioxidant effects via reduced malondialdehyde (MDA) formation and increased GSH level and SOD activity. We observed dose-dependent prevention of K+ ion leakage along with a remarkable decline of hemolysis in erythrocytes pretreated with geraniol. Geraniol 100 µg/mL and diclofenac 100 µM were nontoxic to WBCs. Geraniol significantly reduces the expression and release of cellular pro-inflammatory factors TNF-α, IL-1β, IL-8, and nitric oxide, accompanied by a significant upregulation of gene expression of anti-inflammatory cytokine IL-10 in LPS-induced WBCs compared to nontreated cells. It demonstrates a much stronger inhibition potential than diclofenac in terms of inflammation inhibition. When comparing molecular docking and simulation data, current work showed that geraniol has a good affinity toward apoptosis signal-regulating kinase 1 (ASK1) and human P2Y12 receptors and could be developed as an antioxidant, anti-inflammatory, and anticoagulant medication in the future. Consequently, geraniol is recommended to have a defensive influence against oxidative stress, and hemolysis also could be developed as a promising anti-inflammatory, antioxidant, and anticoagulant medication.
Collapse
Affiliation(s)
- Eman Fawzy El Azab
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia. .,Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt.
| | - Abdulrahman M Saleh
- Pharmaceutical Medicinal Chemistry and Drug Design Department, Faculty of Pharmacy (Boys), Al-Azhar University, Cairo, 11884, Egypt
| | - Sara Osman Yousif
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia.,Department of Clinical Chemistry, Faculty of Medical Laboratory Sciences, Sudan University of Science and Technology, Khartoum, Sudan
| | - Bi Bi Zainab Mazhari
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia
| | - Heba Abu Alrub
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia
| | - Elyasa Mustafa Elfaki
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia
| | - Alneil Hamza
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Qurayyat, Jouf University, Al-Qurayyat, 77454, Saudi Arabia
| | - Shaymaa Abdulmalek
- Biochemistry Department, Faculty of Science, Alexandria University, Alexandria, 21511, Egypt
| |
Collapse
|
2
|
Dileep KV, Remya C, Tintu I, Haridas M, Sadasivan C. Interactions of selected indole derivatives with phospholipase A₂: in silico and in vitro analysis. J Mol Model 2013; 19:1811-7. [PMID: 23315198 DOI: 10.1007/s00894-012-1741-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 12/17/2012] [Indexed: 11/30/2022]
Abstract
Phospholipase A2 (PLA₂) is one of the key enzymes involved in the formation of inflammatory mediators. Inhibition of PLA₂ is considered to be one of the efficient methods to control inflammation. In silico docking studies of 160 selected indole derivatives performed against porcine pancreatic PLA₂ (ppsPLA2) suggested that, CID2324681, CID8617 (indolebutyric acid or IBA), CID22097771 and CID802 (indoleacetic acid or IAA) exhibited highest binding energies. In silico analysis was carried out to predict some of the ADME properties. The binding potential of these compounds with human non pancreatic secretory PLA₂ (hnpsPLA₂) was determined using molecular docking studies. In order to corroborate the in silico results, enzyme kinetics and isothermal titration calorimetric analysis of the two selected compounds, IAA and IBA were performed against ppsPLA₂. From the analysis, it was concluded that IAA and IBA can act as competitive inhibitors to the enzyme and may be used as anti inflammatory agents.
Collapse
Affiliation(s)
- Kalarickal Vijayan Dileep
- Department of Biotechnology and Microbiology and Inter-University Centre for Bioscience, Kannur University, Thalassery Campus, Kannur, Palayad 670661, India
| | | | | | | | | |
Collapse
|
3
|
LEHR MATTHIAS. Inhibitors of Cytosolic Phospholipase A2 α as Anti-inflammatory Drugs. ANTI-INFLAMMATORY DRUG DISCOVERY 2012. [DOI: 10.1039/9781849735346-00035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Arachidonic acid derivatives, like prostaglandins and leukotrienes, as well as the alkyl-ether phospholipid platelet-activating factor (PAF) are highly active substances with diverse biological actions. Elevated levels of these lipid mediators in response to a variety of stimuli have been implicated in the pathology of many inflammatory diseases. The rate-limiting step in the generation of prostaglandins, leukotrienes and PAF, respectively, is the cleavage of the sn-2-ester of membrane phospholipids by a phospholipase A2 (PLA2). Among the superfamily of PLA2 enzymes, cytosolic PLA2α (cPLA2α, also referred to as group IVA PLA2) is thought to play the primary role in this biochemical reaction. Therefore, inhibition of cPLA2α activity is an attractive approach to the control of inflammatory disorders.
In this chapter the main groups of cPLA2α inhibitors are described and the problems associated with the development of clinical active drug candidates are discussed. Furthermore, in-vivo data obtained with such compounds in pre-clinical animal models of inflammation will be presented.
Collapse
Affiliation(s)
- MATTHIAS LEHR
- Institute of Pharmaceutical and Medicinal Chemistry University of Münster Hittorfstrasse 58–62, 48149 Münster Germany
| |
Collapse
|
4
|
Ghasemi A, Elfringhoff AS, Lehr M. Structure–activity relationship studies of 3-dodecanoylindole-2-carboxylic acid inhibitors of cytosolic phospholipase A2α-mediated arachidonic acid release in intact platelets: variation of the keto moiety. J Enzyme Inhib Med Chem 2008; 20:429-37. [PMID: 16335050 DOI: 10.1080/14756360500228338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Recently we found that 1-methyldodecanoylindole-2-carboxylic acid (1) and 1-[2-(4-carboxyphenoxy)ethyl]-3-dodecanoylindole-2-carboxylic acid (4) were inhibitors of the cytosolic phospholipase A2alpha (cPLA2alpha)-mediated arachidonic acid release in calcium ionophore A23187-stimulated human platelets with IC50-values of 4.8 microM (1) and 0.86 microM (4). We have now replaced the 3-acyl residue of these compounds by alkylated sulfinyl-, sulfony-, sulfinamoyl-, sulfamoyl-, carbonylamino-, or carbonylaminomethyl-substituents. Structure-activity relationship studies revealed that the pronounced cellular activity of 4 strongly depends on the presence of the 3-acyl moiety. Surprisingly, when testing 4 and its derivatives in an assay with the isolated cPLA2, none of these compounds showed an inhibitory potency at 10 microM indicating that they do not inhibit cPLA2alpha in the cells by a direct interaction with the active site of the enzyme.
Collapse
Affiliation(s)
- Afshin Ghasemi
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62 D-48149 Münster, Germany
| | | | | |
Collapse
|
5
|
Praveen C, Rao JR, Reddy PP, Mukkanti K, Reddy GS. Facile synthesis of 6-aryl-5H-8-oxa-4b, 7-diaza-benzo[a]azulen-9-one derivatives, new tricyclic heterocycles. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
6
|
Ludwig J, Bovens S, Brauch C, Elfringhoff AS, Lehr M. Design and Synthesis of 1-Indol-1-yl-propan-2-ones as Inhibitors of Human Cytosolic Phospholipase A2α. J Med Chem 2006; 49:2611-20. [PMID: 16610804 DOI: 10.1021/jm051243a] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis and structure-activity relationship study of a series of 1-indol-1-yl-3-phenoxypropan-2-one inhibitors of cytosolic phospholipase A(2)alpha (cPLA(2)alpha) are described. The compounds were evaluated in a vesicle assay with isolated cPLA(2)alpha and in cellular assays with intact human platelets. Systematic variation led to 3-methylhydrogen 1-[3-(4-decyloxyphenoxy)-2-oxopropyl]indole-3,5-dicarboxylate (57), which revealed the highest activity against the isolated enzyme. With an IC(50) value of 4.3 nM in this assay, it is one of the most potent in vitro cPLA(2)alpha inhibitors known today.
Collapse
Affiliation(s)
- Joachim Ludwig
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, D-48149 Münster, Germany
| | | | | | | | | |
Collapse
|
8
|
Schmitt M, Lehr M. HPLC assay with UV spectrometric detection for the evaluation of inhibitors of cytosolic phospholipase A2. J Pharm Biomed Anal 2004; 35:135-42. [PMID: 15030888 DOI: 10.1016/j.jpba.2003.12.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2003] [Revised: 12/22/2003] [Accepted: 12/29/2003] [Indexed: 11/30/2022]
Abstract
A non-radioactive spectrometric assay for the evaluation of inhibitors of cytosolic phospholipase A(2) (cPLA(2)) is described. The enzyme was isolated from human platelets applying anion exchange chromatography. Sonicated covesicles consisting of 0.2mM 1-stearoyl-2-arachidonoyl-sn-glycero-3-phosphocholine and 0.1mM 1,2-dioleoyl-sn-glycerol were used as enzyme substrate. The cPLA(2) activity was determined by measuring the arachidonic acid released by the enzyme with reversed-phase HPLC and UV detection at 200 nm after cleaning up the samples by solid phase extraction. Two known cPLA(2) inhibitors were used to validate the test assay.
Collapse
Affiliation(s)
- Melanie Schmitt
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Hittorfstrasse 58-62, D-48149 Münster, Germany
| | | |
Collapse
|
9
|
Lehr M, Klimt M, Elfringhoff AS. Novel 3-dodecanoylindole-2-carboxylic acid inhibitors of cytosolic phospholipase A(2). Bioorg Med Chem Lett 2001; 11:2569-72. [PMID: 11551751 DOI: 10.1016/s0960-894x(01)00472-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Derivatives of 1-[2-(4-carboxyphenoxy)ethyl]-3-dodecanoylindole-2-carboxylic acid (4) with modified substituents at the indole-1-position were synthesized and evaluated for their ability to inhibit the arachidonic acid release in human platelets mediated by the cytosolic phospholipase A(2). One of the most active compounds obtained was 26 with an IC(50) of 0.44 microM.
Collapse
Affiliation(s)
- M Lehr
- Institute of Pharmaceutical Chemistry, University of Münster, Hittorfstrasse 58-62, D-48149 Münster, Germany.
| | | | | |
Collapse
|