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Saghour N, Chérifi F, Saoud S, Zebbiche Y, Meribai A, Bekkari N, Samya TM, Laraba-Djebari F. Structural, Biochemical Characterization and Molecular Mechanism of Cerastokunin: A New Kunitz-Type Peptide with Potential Inhibition of Thrombin, Factor Xa and Platelets. Protein J 2024; 43:888-909. [PMID: 39095592 DOI: 10.1007/s10930-024-10226-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2024] [Indexed: 08/04/2024]
Abstract
The current investigation focused on separating Cerastes cerastes venom to produce the first Kunitz-type peptide. Based on its anti-trypsin effect, Cerastokunin, a 7.75 kDa peptide, was purified until homogenity by three steps of chromatography. Cerastokunin was found to include 67 amino acid residues that were obtained by de novo sequencing using LC-MALDI-MSMS. Upon alignment with Kunitz-type peptides, there was a high degree of similarity. Cerastokunin's 3D structure had 12% α-helices and 21% β-strands with pI 8.48. Cerastokunin showed a potent anticoagulant effect by inhibiting the protease activity of thrombin and trypsin as well as blocking the intrinsic and extrinsic coagulation pathways. In both PT and aPPT, Cerastokunin increased the blood clotting time in a dose-dependent way. Using Lys48 and Gln192 for direct binding, Cerastokunin inhibited thrombin, Factor Xa and trypsin as shown by molecular docking. Cerastokunin exhibited a dose-response blockade of PARs-dependent pathway platelet once stimulated by thrombin. An increased concentration of Cerastokunin resulted in a larger decrease of tail thrombus in the mice-carrageenan model in an in vivo investigation when compared to the effects of antithrombotic medications. At all Cerastokunin doses up to 6 mg/kg, no in vivo toxicity was seen in challenged mice over the trial's duration.
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Affiliation(s)
- Noussaiba Saghour
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, USTHB, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatah Chérifi
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, USTHB, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria.
| | - Samah Saoud
- Faculty of Sciences, University of Algiers 1, Algiers, Algeria
| | - Younes Zebbiche
- Faculty of Pharmacy, University of Algiers 1, Algiers, Algeria
| | - Amel Meribai
- Food Technology and Human Nutrition Research Laboratory, National Agronomic High School, Algiers, Algeria
| | - Nadjia Bekkari
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, USTHB, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | | | - Fatima Laraba-Djebari
- Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, USTHB, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
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Coimbra FCP, Sanchez EE, Lomonte B, Gutiérrez JM, Calvete JJ, Fry BG. Blood Lines: Intraspecific and Interspecific Variations in Anticoagulant Actions of Agkistrodon Viperid Venoms. Toxins (Basel) 2024; 16:291. [PMID: 39057931 PMCID: PMC11281148 DOI: 10.3390/toxins16070291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 06/23/2024] [Accepted: 06/25/2024] [Indexed: 07/28/2024] Open
Abstract
This study investigated the intraspecific and interspecific variability in the venom effects of Agkistrodon viperid snake species and subspecies (eleven venoms total) on plasma clotting times, fibrinogen levels, and fibrin clot strength. Significant delays in plasma clotting time were observed for A. conanti, A. contortrix mokasen, A. contortrix phaeogaster, A. howardgloydi, A. piscivorus leucostoma, and A. piscivorus piscivorus. Notably, the phylogenetically disjunct lineages A. conanti, A. contortrix mokasen, and A. howardgloydi exhibited the most potent anticoagulant effects, indicating the independent amplification of a basal trait. Inhibition assays with the activated clotting enzymes Factors XIa, IXa, Xa, and IIa (thrombin) revealed that FXa inhibition is another basal trait amplified independently on multiple occasions within the genus, but with A. howardgloydi, notably more potent than all others. Phospholipid degradation and zymogen destruction were identified as mechanisms underlying the variability in venom effects observed experimentally and in previous clinical reports. Thromboelastography demonstrated that the venoms did not clot fibrinogen directly but affected fibrin clot strength by damaging fibrinogen and that thrombin was subsequently only able to cleave into weak, unstable clots. The ability to activate Protein C, an endogenous anticoagulant enzyme, varied across species, with some venoms exceeding that of A. contortrix contortrix, which previously yielded the protein diagnostic agent Protac®. Phylogenetic analysis suggested that both fibrinogen degradation and Protein C activation were each amplified multiple times within the genus, albeit with negative correlation between these two modes of action. This study highlights the evolutionary, clinical, and biodiscovery implications of venom variability in the Agkistrodon species, underscoring their dynamic evolution, emphasising the need for tailored clinical approaches, and highlighting the potential for novel diagnostic and therapeutic developments inspired by the unique properties of snake venoms.
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Affiliation(s)
- Francisco C. P. Coimbra
- Adaptive Biotoxicology Lab, School of the Environment, University of Queensland, St Lucia, QLD 4072, Australia;
| | - Elda E. Sanchez
- National Natural Toxins Research Center, Department of Chemistry, Texas A&M University-Kingsville, MSC 224, 975 West Avenue B, Kingsville, TX 78363, USA;
| | - Bruno Lomonte
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501, Costa Rica; (B.L.); (J.M.G.)
| | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José 11501, Costa Rica; (B.L.); (J.M.G.)
| | - Juan J. Calvete
- Laboratorio de Venómica Evolutiva y Traslacional, Instituto de Biomedicina de Valencia, CSIC, 46010 Valencia, Spain;
| | - Bryan G. Fry
- Adaptive Biotoxicology Lab, School of the Environment, University of Queensland, St Lucia, QLD 4072, Australia;
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Abstract
The deleterious consequences of snake envenomation are due to the extreme protein complexity of snake venoms. Therefore, the identification of their components is crucial for understanding the clinical manifestations of envenomation pathophysiology and for the development of effective antivenoms. In addition, snake venoms are considered as libraries of bioactive molecules that can be used to develop innovative drugs. Numerous separation and analytical techniques are combined to study snake venom composition including chromatographic techniques such as size exclusion and RP-HPLC and electrophoretic techniques. Herein, we present in detail these existing techniques and their applications in snake venom research. In the first part, we discuss the different possible technical combinations that could be used to isolate and purify SV proteins using what is known as bioassay-guided fractionation. In the second part, we describe four different proteomic strategies that could be applied for venomics studies to evaluate whole venom composition, including the mostly used technique: RP-HPLC. Eventually, we show that to date, there is no standard technique used for the separation of all snake venoms. Thus, different combinations might be developed, taking into consideration the main objective of the study, the available resources, and the properties of the target molecules to be isolated.
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Khelfi A, Oussedik-Oumehdi H, Laraba-Djebari F. Therapeutic Outcome of Anti-inflammatory and Antioxidative Medicines on the Dermonecrotic Activity of Cerastes cerastes Venom. Inflammation 2022; 45:1700-1719. [DOI: 10.1007/s10753-022-01654-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 12/01/2022]
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Teodoro A, Gonçalves FJ, Oliveira H, Marques S. Venom of Viperidae: A Perspective of its Antibacterial and Antitumor
Potential. Curr Drug Targets 2022; 23:126-144. [DOI: 10.2174/1389450122666210811164517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/17/2021] [Accepted: 06/07/2021] [Indexed: 12/25/2022]
Abstract
:
The emergence of multi-drug resistant bacteria and limitations on cancer treatment represent
two important challenges in modern medicine. Biological compounds have been explored with
a particular focus on venoms. Although they can be lethal or cause considerable damage to humans,
venom is also a source rich in components with high therapeutic potential.
:
Viperidae family is one of the most emblematic venomous snake families and several studies highlighted
the antibacterial and antitumor potential of viper toxins. According to the literature, these
activities are mainly associated to five protein families - svLAAO, Disintegrins, PLA2, SVMPs and
C-type lectins- that act through different mechanisms leading to the inhibition of the growth of bacteria,
as well as, cytotoxic effects and inhibition of metastasis process. In this review, we provide
an overview of the venom toxins produced by species belonging to the Viperidae family, exploring
their roles during the envenoming and their pharmacological properties, in order to demonstrate its
antibacterial and antitumor potential.
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Affiliation(s)
- André Teodoro
- Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Fernando J.M. Gonçalves
- Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
- CESAM- Centre for Environmental and
Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Helena Oliveira
- Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
- CESAM- Centre for Environmental and
Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Sérgio Marques
- Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal
- CESAM- Centre for Environmental and
Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
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Kalita B, Saviola AJ, Samuel SP, Mukherjee AK. State-of-the-art review - A review on snake venom-derived antithrombotics: Potential therapeutics for COVID-19-associated thrombosis? Int J Biol Macromol 2021; 192:1040-1057. [PMID: 34656540 PMCID: PMC8514616 DOI: 10.1016/j.ijbiomac.2021.10.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/03/2021] [Accepted: 10/04/2021] [Indexed: 12/30/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent responsible for the Coronavirus Disease-2019 (COVID-19) pandemic, has infected over 185 million individuals across 200 countries since December 2019 resulting in 4.0 million deaths. While COVID-19 is primarily associated with respiratory illnesses, an increasing number of clinical reports indicate that severely ill patients often develop thrombotic complications that are associated with increased mortality. As a consequence, treatment strategies that target COVID-associated thrombosis are of utmost clinical importance. An array of pharmacologically active compounds from natural products exhibit effects on blood coagulation pathways, and have generated interest for their potential therapeutic applications towards thrombotic diseases. In particular, a number of snake venom compounds exhibit high specificity on different blood coagulation factors and represent excellent tools that could be utilized to treat thrombosis. The aim of this review is to provide a brief summary of the current understanding of COVID-19 associated thrombosis, and highlight several snake venom compounds that could be utilized as antithrombotic agents to target this disease.
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Affiliation(s)
- Bhargab Kalita
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; National Centre for Cell Science, Pune 411007, Maharashtra, India
| | - Anthony J Saviola
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Stephen P Samuel
- Queen Elizabeth Hospital King's Lynn NHS Foundation Trust, King's Lynn, Norfolk PE30 4ET, UK
| | - Ashis K Mukherjee
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur 784028, Assam, India; Institute of Advanced Study in Science and Technology, Guwahati 781035, Assam, India.
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Chérifi F, Laraba-Djebari F. Bioactive Molecules Derived from Snake Venoms with Therapeutic Potential for the Treatment of Thrombo-Cardiovascular Disorders Associated with COVID-19. Protein J 2021; 40:799-841. [PMID: 34499333 PMCID: PMC8427918 DOI: 10.1007/s10930-021-10019-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 01/08/2023]
Abstract
As expected, several new variants of Severe Acute Respiratory Syndrome-CoronaVirus-2 (SARS-CoV-2) emerged and have been detected around the world throughout this Coronavirus Disease of 2019 (COVID-19) pandemic. Currently, there is no specific developed drug against COVID-19 and the challenge of developing effective antiviral strategies based on natural agents with different mechanisms of action becomes an urgent need and requires identification of genetic differences among variants. Such data is used to improve therapeutics to combat SARS-CoV-2 variants. Nature is known to offer many biotherapeutics from animal venoms, algae and plant that have been historically used in traditional medicine. Among these bioresources, snake venom displays many bioactivities of interest such as antiviral, antiplatelet, antithrombotic, anti-inflammatory, antimicrobial and antitumoral. COVID-19 is a viral respiratory sickness due to SARS-CoV-2 which induces thrombotic disorders due to cytokine storm, platelet hyperactivation and endothelial dysfunction. This review aims to: (1) present an overview on the infection, the developed thrombo-inflammatory responses and mechanisms of induced thrombosis of COVID-19 compared to other similar pathogenesis; (2) underline the role of natural compounds such as anticoagulant, antiplatelet and thrombolytic agents; (3) investigate the management of coagulopathy related to COVID-19 and provide insight on therapeutic such as venom compounds. We also summarize the updated advances on antiviral proteins and peptides derived from snake venoms that could weaken coagulopathy characterizing COVID-19.
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Affiliation(s)
- Fatah Chérifi
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, USTHB, BP 32, El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, USTHB, BP 32, El-Alia, Bab Ezzouar, Algiers, Algeria.
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Kiheli H, Chérifi F, Ameziani M, Saoud S, Hariti G, Laraba-Djebari F. Isolation and Characterization of CD39-like Phosphodiesterase (Cc-PDE) from Cerastes cerastes Venom: Molecular Inhibitory Mechanism of Antiaggregation and Anticoagulation. Protein Pept Lett 2021; 28:426-441. [PMID: 32798364 DOI: 10.2174/0929866527666200813200148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 07/01/2020] [Accepted: 07/16/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cerastes cerastes venom contains several bioactive proteins with inhibitory potential of platelet aggregation and blood coagulation. OBJECTIVE The current study deals with purification, characterization and determination of structural properties of Cc-PDE, the first phosphodiesterase from Cerastes cerastes venom. MATERIAL AND METHODS The purification process consists of three successive chromatographies including G75-Sephadex size exclusion, DEAE exchange chromatography and affinity using Sildenafil as a main PDEs' specific inhibitor. The amino acid sequence of purified Cc-PDE was determined by liquid chromatography coupled off line to MALDI-TOF/TOF. Modeling and structural features were obtained using several bioinformatics tools. In vivo and in vitro antiplatelet aggregation and anticoagulant assays were performed. RESULTS Cc-PDE (73 506.42 Da) is a 654-residue single polypeptide with 1-22 signal peptide and it is characterized by the presence of predominant basic amino acids suitable to alkaline pI (8.17). Cc-PDE structure is composed of β-strands (17%) and α-helices (24%) and it shares a high identity with homologous snake venom PDEs. Cc-PDE hydrolyzes both Bis-p-nitrophenyl phosphate (Km = 2.60 ± 0.95 mM, Vmax = 0.017 ± 0.002569 μmol.min-1) and p-nitrophenyl phosphate (Km = 7.13 mM ± 0.04490 mM, Vmax = 0.053 ±0.012 μmol.min-1). Cc-PDE prevents ADP- and ATP-induced platelet aggregation by hydrolyzing ADP and ATP, reducing surface P-selectin expression and attenuating platelet function. In addition, Cc-PDE inhibits coagulation factors involved in the intrinsic pathway demonstrated by a significant prolongation of activated partial thromboplastin time and in vivo long-lasting anticoagulation. CONCLUSION The obtained results revealed that Cc-PDE may have a therapeutic potential and could be a remedy for thromboembolic diseases as an alternative of anticoagulant and antiplatelet aggregation chemical origins.
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Affiliation(s)
- Hamida Kiheli
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, University of Science and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatah Chérifi
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, University of Science and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Meriem Ameziani
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, University of Science and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Samah Saoud
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, University of Science and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Ghania Hariti
- Unverisity of Benyoucef Benkheda Algiers 1, Faculty of Medicine, Centre de Transfusion Sanguine, CHU Bab El-Oued, Algiers, Algeria
| | - Fatima Laraba-Djebari
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, University of Science and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
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Ameziani M, Chérifi F, Kiheli H, Saoud S, Hariti G, Kellou-Taîri S, Laraba-Djebari F. Isolation and Functional Identification of an Antiplatelet RGD-Containing Disintegrin from Cerastes cerastes Venom. Protein J 2020; 39:574-590. [PMID: 32960374 DOI: 10.1007/s10930-020-09915-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/17/2020] [Indexed: 11/30/2022]
Abstract
The current report focuses on purification, structural and functional characterization of Cerastategrin from Cerastes cerastes venom, a novel basic disintegrin (pI 8.36) with 128 amino acid residues and a molecular weight of 13 835.25 Da measured by MALDI-MSMS. The 3D structure of Cerastategrin is organized as α-helix (13%), β-strand (15%) and disordered structure (30%) and presents homologies with several snake venom disintegrins. Structural modeling shows that Cerastategrin presents an RGD motif that connects specifically to integrin receptors. Cerastategrin exhibits the inhibition of ADP induced platelets with an IC50 of 0.88 µg/mL and shows in vivo long stable anticoagulation effect 24 h post-injection of increasing doses ranging from 0.2 to 1 mg/kg, therefore, Cerastategrin maintained irreversibly the blood incoagulable. Moreover, Cerastategrin decreases the amount of bounded αIIbβ3 and reduced significantly the quantity of externalized P-Selectin. Cerastategrin acts as a molecule targeting specifically the receptor αIIbβ3; therefore, it behaves as a potent platelet activation inhibitor. As a new peptide with promising pharmacological properties, Cerastategrin could have a potential therapeutical effect in the vascular pathologies and may be a new effective treatment approach.
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Affiliation(s)
- Meriem Ameziani
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatah Chérifi
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Hamida Kiheli
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Samah Saoud
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Ghania Hariti
- Faculty of Medicine, Blood Transfusion Center, Unverisity of Benyoucef Benkheda Algiers 1, CHU Bab El-Oued, Algiers, Algeria
| | - Safia Kellou-Taîri
- USTHB, Laboratory of Theoretical Physico-Chemistry and Computer Chemistry, Faculty of Chemistry, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Laboratory of Cellular and Molecular Biology, Faculty of Biological Sciences, BP 32 El-Alia, Bab Ezzouar, Algiers, Algeria.
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Nourreddine FZ, Oussedik-Oumehdi H, Laraba-Djebari F. Myotoxicity induced by Cerastes cerastes venom: Beneficial effect of heparin in skeletal muscle tissue regeneration. Acta Trop 2020; 202:105274. [PMID: 31738878 DOI: 10.1016/j.actatropica.2019.105274] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/13/2019] [Accepted: 11/13/2019] [Indexed: 01/03/2023]
Abstract
Myonecrosis is a relevant tissue damage induced by snakes of Viperidae family often leading to permanent tissue and function loss and even amputation. The aim of this study was to evaluate the effect of heparin on skeletal muscle tissue regeneration after Cerastes cerastes envenomation. Mice received either the venom (1 LD50) by i.m. route, or the venom followed, by heparin administration by i.v. route at 15 min and 4 h. Obtained results showed that Cerastes cerastes venom induced deep tissue structure alterations, characterized mainly by edema, hemorrhage, myonecrosis and inflammation. Myotoxicity was correlated with increased CK levels in sera, concomitant with their decrease in muscle tissue homogenates. Muscle wet weight was restored within 2 weeks after heparin treatment and 28 days in the envenomed group. Heparin treatment significantly decreased MPO activity, suggesting an anti-inflammatory effect. NO, HGF, VEGF and G-CSF levels were increased after heparin administration. These mitogenic factors constitute potent stimuli for satellite and endothelial cells improving, thus, muscle regeneration. This study showed that muscle tissue recovery was significantly enhanced after heparin treatment. Heparin use seems to be a promising therapeutic approach after viper envenomation.
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Affiliation(s)
- Fatima Zohra Nourreddine
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia, Bab Ezzouar,16111, Algiers, Algeria
| | - Habiba Oussedik-Oumehdi
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia, Bab Ezzouar,16111, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia, Bab Ezzouar,16111, Algiers, Algeria.
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Purification and characterization of a thrombin-like enzyme isolated from Vipera lebetina venom: its interaction with platelet receptor. Blood Coagul Fibrinolysis 2019; 31:1-10. [PMID: 31764002 DOI: 10.1097/mbc.0000000000000856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
: Snake venoms contain various molecules that can be used as tools in the diagnosis and in the treatment of hemostatic disorders. This study reports the isolation and functional characterization of a new thrombin-like enzyme and its role in the modulation of platelet aggregation and coagulation. The molecule was purified by gel filtration, anion exchange chromatography and reverse-phase-HPLC on C8 column; its molecular weight was determined. Natural and synthetic substrates were used to evaluate its enzymatic activities. The fibrinogenolytic activity was tested electrophoretically and by reverse-phase-HPLC on C18 column. Otherwise, the effect on blood coagulation and deficient plasma factors were also evaluated. The mechanism by which a thrombin-like enzyme VLCV (thrombin-like enzyme)-induced platelet aggregation was explored in presence of ticlopidin, clopidogrel and aspirin. VLCV (45 kDa) isolated from Vipera lebetina as a thrombin-like enzyme seems to be able to modulate platelet function. This enzyme showed an amidolytic activity by hydrolyzing the chromogenic-specific substrate of thrombin and the α-chain of fibrinogen. It is also able to clot human plasma and the deficient human plasma in factor X, suggesting that it is involved in the intrinsic and common pathways. The aggregating effect of VLCV is more sensitive to ticlopidine than to the clopidogrel suggesting the involvement of ADP/P2Y12/PI3K pathway. VLCV seems to be able to promote human platelet aggregation suggesting an interaction between P2Y12 and PAR1. Due to its ability to replace the missing factor X and its proaggregating activity, VLCV could be used as molecular tool to better understand the hemostasis mechanism.
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Fatah C, Samah S, Fatima L. Antiplatelet and anticoagulant activities of two phospholipase A2s purified from
Cerastes cerastes
venom: Structure‐function relationship. J Biochem Mol Toxicol 2018; 32:e22219. [DOI: 10.1002/jbt.22219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 07/11/2018] [Accepted: 07/24/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Chérifi Fatah
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular BiologyUSTHBBab Ezzouar, Algiers Algeria
| | - Saoud Samah
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular BiologyUSTHBBab Ezzouar, Algiers Algeria
| | - Laraba‐Djebari Fatima
- Faculty of Biological Sciences, Laboratory of Cellular and Molecular BiologyUSTHBBab Ezzouar, Algiers Algeria
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Purification and Characterization of a Novel Antiplatelet Peptide from Deinagkistrodon acutus Venom. Toxins (Basel) 2018; 10:toxins10080332. [PMID: 30115892 PMCID: PMC6115707 DOI: 10.3390/toxins10080332] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 01/06/2023] Open
Abstract
Animal venoms are considered as one of the most important sources for drug development. Deinagkistrodon acutus is famous for its toxicity to the human hematological system and envenomed patients develop a coagulation disorder with the symptoms of hemorrhage and microthrombi formation. The purpose of this study was to separate antiplatelet peptides from D. acutus venom using a combination of an ultrafiltration technique and reversed-phase high performance liquid chromatography (HPLC), which was guided by monitoring antiplatelet aggregation bioactivity. A novel octa-peptide named DAA-8 was found. This peptide inhibited protease-activated receptor1 (PAR-1) agonist (SFLLRN-NH2) induced platelet aggregation and it also inhibited platelet aggregation induced by thrombin, ADP, and collagen. Furthermore, DAA-8 showed significant antithrombotic activity and resulted in a slightly increased bleeding risk in vivo. This is the first report of a peptide derived from snake venom, which inhibited PAR-1 agonist-induced platelet aggregation. This peptide may provide a template to design a new PAR-1 inhibitor.
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Chérifi F, Saoud S, Laraba-Djebari F. Molecular modeling, biochemical characterization, and pharmacological properties of Cc 3 -SPase: A platelet-aggregating thrombin-like enzyme purified from Cerastes cerastes venom. J Biochem Mol Toxicol 2018; 32:e22165. [PMID: 29979475 DOI: 10.1002/jbt.22165] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 05/23/2018] [Accepted: 06/15/2018] [Indexed: 01/25/2023]
Abstract
Cc3 -SPase (30 kDa-proteinase; pI 5.98) was isolated from Cerastes cerastes venom. Its sequence of 271 residues yielded from LC-MALDI-TOF showed high degrees of homology when aligned with other proteinases. Cc3 -SPase cleaved natural and synthetic proteins such as casein and fibrinogen leaving fibrin clots unaffected. Cc3 -SPase was fully abolished by ion chelators, whereas aprotinin, antithrombin III (Sigma Aldrich, Saint-Louis, Missouri, USA), and heparin were ineffective. Affinity of Cc3 -SPase to benzamidine indicated the presence of an aspartate residue in the catalytic site as confirmed by three-dimensional structure consisting of 14 β-strands and four α-helices. Molecular mechanisms revealed that Cc3 -SPase is capable of promoting dysfunctional platelet aggregation via two signaling pathways mediated by the G-coupled protein receptors and αIIbβ3 integrin. Cc3 -SPase is involved in both extrinsic/intrinsic coagulation pathways in deficient plasmas by replacing defective/lacking factors FII, FVII, and FVIII but not FX. Cc3 -SPase could substitute missing factors in blood diseases related to plasma factor deficiencies.
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Affiliation(s)
- Fatah Chérifi
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Bab Ezzouar, Algiers, Algeria
| | - Samah Saoud
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Bab Ezzouar, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, Bab Ezzouar, Algiers, Algeria
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Allane D, Oussedik-Oumehdi H, Harrat Z, Seve M, Laraba-Djebari F. Isolation and characterization of an anti-leishmanial disintegrin fromCerastes cerastesvenom. J Biochem Mol Toxicol 2017; 32. [DOI: 10.1002/jbt.22018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 11/21/2017] [Accepted: 11/28/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Dihia Allane
- USTHB, Faculty of Biological Sciences; Laboratory of Cellular and Molecular Biology; Bab Ezzouar Algiers 16111 Algeria
| | - Habiba Oussedik-Oumehdi
- USTHB, Faculty of Biological Sciences; Laboratory of Cellular and Molecular Biology; Bab Ezzouar Algiers 16111 Algeria
| | - Zoubir Harrat
- Institut Pasteur d'Algérie; Service d'Eco-Epidémiologie Parasitaire; Dely Ibrahim Algiers 16 047 Algeria
| | - Michel Seve
- CHU Grenoble Alpes, Institut de Biologie et de Pathologie; Promethee Proteomic Platform; Grenoble France
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences; Laboratory of Cellular and Molecular Biology; Bab Ezzouar Algiers 16111 Algeria
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