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Monroe LK, Truong DP, Miner JC, Adikari SH, Sasiene ZJ, Fenimore PW, Alexandrov B, Williams RF, Nguyen HB. Conotoxin Prediction: New Features to Increase Prediction Accuracy. Toxins (Basel) 2023; 15:641. [PMID: 37999504 PMCID: PMC10675404 DOI: 10.3390/toxins15110641] [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: 09/11/2023] [Revised: 10/27/2023] [Accepted: 10/30/2023] [Indexed: 11/25/2023] Open
Abstract
Conotoxins are toxic, disulfide-bond-rich peptides from cone snail venom that target a wide range of receptors and ion channels with multiple pathophysiological effects. Conotoxins have extraordinary potential for medical therapeutics that include cancer, microbial infections, epilepsy, autoimmune diseases, neurological conditions, and cardiovascular disorders. Despite the potential for these compounds in novel therapeutic treatment development, the process of identifying and characterizing the toxicities of conotoxins is difficult, costly, and time-consuming. This challenge requires a series of diverse, complex, and labor-intensive biological, toxicological, and analytical techniques for effective characterization. While recent attempts, using machine learning based solely on primary amino acid sequences to predict biological toxins (e.g., conotoxins and animal venoms), have improved toxin identification, these methods are limited due to peptide conformational flexibility and the high frequency of cysteines present in toxin sequences. This results in an enumerable set of disulfide-bridged foldamers with different conformations of the same primary amino acid sequence that affect function and toxicity levels. Consequently, a given peptide may be toxic when its cysteine residues form a particular disulfide-bond pattern, while alternative bonding patterns (isoforms) or its reduced form (free cysteines with no disulfide bridges) may have little or no toxicological effects. Similarly, the same disulfide-bond pattern may be possible for other peptide sequences and result in different conformations that all exhibit varying toxicities to the same receptor or to different receptors. We present here new features, when combined with primary sequence features to train machine learning algorithms to predict conotoxins, that significantly increase prediction accuracy.
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Affiliation(s)
- Lyman K. Monroe
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Duc P. Truong
- Theoretical Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Jacob C. Miner
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Samantha H. Adikari
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Zachary J. Sasiene
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Paul W. Fenimore
- Theoretical Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Boian Alexandrov
- Theoretical Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Robert F. Williams
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Hau B. Nguyen
- Bioscience Division, MS M888, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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Messadi E. Snake Venom Components as Therapeutic Drugs in Ischemic Heart Disease. Biomolecules 2023; 13:1539. [PMID: 37892221 PMCID: PMC10605524 DOI: 10.3390/biom13101539] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/18/2023] [Accepted: 09/27/2023] [Indexed: 10/29/2023] Open
Abstract
Ischemic heart disease (IHD), especially myocardial infarction (MI), is a leading cause of death worldwide. Although coronary reperfusion is the most straightforward treatment for limiting the MI size, it has nevertheless been shown to exacerbate ischemic myocardial injury. Therefore, identifying and developing therapeutic strategies to treat IHD is a major medical challenge. Snake venoms contain biologically active proteins and peptides that are of major interest for pharmacological applications in the cardiovascular system (CVS). This has led to their use for the development and design of new drugs, such as the first-in-class angiotensin-converting enzyme inhibitor captopril, developed from a peptide present in Bothrops jararaca snake venom. This review discusses the potential usefulness of snake venom toxins for developing effective treatments against IHD and related diseases such as hypertension and atherosclerosis. It describes their biological effects at the molecular scale, their mechanisms of action according to their different pharmacological properties, as well as their subsequent molecular pathways and therapeutic targets. The molecules reported here have either been approved for human medical use and are currently available on the drug market or are still in the clinical or preclinical developmental stages. The information summarized here may be useful in providing insights into the development of future snake venom-derived drugs.
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Affiliation(s)
- Erij Messadi
- Plateforme de Physiologie et Physiopathologie Cardiovasculaires (P2C), Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université Tunis El Manar, Tunis 1068, Tunisia
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3
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Salas Sanzana D, Flores Faúndez E, Meléndez J, Soto-Arriaza M. Increased delivery and cytotoxicity of doxorubicin in HeLa cells using the synthetic cationic peptide pEM-2 functionalized liposomes. Colloids Surf B Biointerfaces 2023; 228:113420. [PMID: 37379702 DOI: 10.1016/j.colsurfb.2023.113420] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/22/2023] [Accepted: 06/17/2023] [Indexed: 06/30/2023]
Abstract
HYPOTHESIS Due to the inability of nano-carriers to passively cross the cell membrane, cell penetration enhancers are used to accelerate cytoplasmic delivery of antineoplastic drugs. In this regard, snake venom phospholipase A2 peptides are known for their ability to destabilize natural and artificial membranes. In this context, functionalized liposomes with peptide pEM-2 should favor the incorporation of doxorubicin and increase its cytotoxicity in HeLa cells compared to free doxorubicin, and doxorubicin encapsulated in non-functionalized liposomes. EXPERIMENTS Several characteristics were monitored, including doxorubicin loading capacity of the liposomes, as well as the release and uptake before and after functionalization. Cell viability and half-maximal inhibition concentrations were determined in HeLa cells. FINDINGS In vitro studies showed that functionalization of doxorubicin-loaded PC-NG liposomes with pEM-2 not only improved the amount of doxorubicin delivered compared to free doxorubicin or other doxorubicin-containing formulations, but also showed enhanced cytotoxicity against HeLa cells. The PC-NG liposomes loaded with doxorubicin improved treatment efficacy by reducing the IC50 value and incubation time. This increase in cell toxicity was directly related to the concentration of pEM-2 peptide bound to the liposomes. We conclude that the cytotoxicity observed in HeLa cells due to the action of doxorubicin was strongly favored when encapsulated in synthetic liposomes and functionalized with the pEM-2 peptide.
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Affiliation(s)
- Diego Salas Sanzana
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica, Santiago, Chile.
| | - Emilia Flores Faúndez
- Centro de Biología Celular y Biomedicina CEBICEM, Universidad San Sebastián, Santiago, Chile.
| | - Jaime Meléndez
- Reproductive Health Research Institute (RHRI), Santiago, Chile.
| | - Marco Soto-Arriaza
- Escuela de Química y Farmacia, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.
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Bialves TS, Bastos Junior CLQ, Cordeiro MF, Boyle RT. Snake venom, a potential treatment for melanoma. A systematic review. Int J Biol Macromol 2023; 231:123367. [PMID: 36690229 DOI: 10.1016/j.ijbiomac.2023.123367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/16/2023] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
Despite advances in treating patients with melanoma, there are still many treatment challenges to overcome. Studies with snake venom-derived proteins/peptides describe their binding potential, and inhibition of some proliferative mechanisms in melanoma. The combined use of these compounds with current therapies could be the strategic gap that will help us discover more effective treatments for melanoma. The present study aimed to carry out a systematic review identifying snake venom proteins and peptides described in the literature with antitumor, antimetastatic, or antiangiogenic effects on melanoma and determine the mechanisms of action that lead to these anti-tumor effects. Snake venoms contain proteins and peptides which are antiaggregant, antimetastatic, and antiangiogenic. The in vivo results are encouraging, considering the reduction of metastases and tumor size after treatment. In addition to these results, it was reported that these venom compounds could act in combination with chemotherapeutics (Acurhagin-C; Macrovipecetin), sensitizing and preparing tumor cells for treatment. There is a consensus that snake venom is a promising strategy for the improvement of antimelanoma therapies, but it has been little explored in the current context, combined with inhibitors, immunotherapy or tumor microenvironment, for example. We suggest Lebein as a candidate for combination therapy with BRAF inhibitors.
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Affiliation(s)
- Tatiane Senna Bialves
- Programa de Pós-Graduação em Ciências Fisiológicas (PPGCF), Universidade Federal do Rio Grande - FURG, Av. Itália, s/n - km 8 - Carreiros, Rio Grande, Rio Grande do Sul, Brazil.
| | - Claudio L Q Bastos Junior
- Programa de Pós-Graduação em Ciências Fisiológicas (PPGCF), Universidade Federal do Rio Grande - FURG, Av. Itália, s/n - km 8 - Carreiros, Rio Grande, Rio Grande do Sul, Brazil
| | - Marcos Freitas Cordeiro
- Programa de Pós-Graduação em Biociências e Saúde (PPGBS), Universidade do Oeste de Santa Catarina - UNOESC, Rua Roberto Trompovski 224, Joaçaba, Santa Catarina, CEP 89600-000, Brazil.
| | - Robert Tew Boyle
- Programa de Pós-Graduação em Ciências Fisiológicas (PPGCF), Universidade Federal do Rio Grande - FURG, Av. Itália, s/n - km 8 - Carreiros, Rio Grande, Rio Grande do Sul, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, Rio Grande do Sul 96203-900, Brazil
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Tan CH, Liew JL, Navanesan S, Sim KS, Tan NH, Tan KY. Cytotoxic and anticancer properties of the Malaysian mangrove pit viper ( Trimeresurus purpureomaculatus) venom and its disintegrin (purpureomaculin). J Venom Anim Toxins Incl Trop Dis 2020; 26:e20200013. [PMID: 32742279 PMCID: PMC7375409 DOI: 10.1590/1678-9199-jvatitd-2020-0013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 05/29/2020] [Indexed: 11/22/2022] Open
Abstract
Background The Asiatic pit vipers from the Trimeresurus complex are medically important venomous snakes. These pit vipers are often associated with snakebite that leads to fatal coagulopathy and tissue necrosis. The cytotoxic venoms of Trimeresurus spp.; however, hold great potential for the development of peptide-based anticancer drugs. Methods This study investigated the cytotoxic effect of the venom from Trimeresurus purpureomaculatus, the mangrove pit viper (also known as shore pit viper) which is native in Malaysia, across a panel of human cancer cell lines from breast, lung, colon and prostate as well as the corresponding normal cell lines of each tissue. Results The venom exhibited dose-dependent cytotoxic activities on all cell lines tested, with median inhibition concentrations (IC50) ranging from 0.42 to 6.98 µg/mL. The venom has a high selectivity index (SI = 14.54) on breast cancer cell line (MCF7), indicating that it is significantly more cytotoxic toward the cancer than to normal cell lines. Furthermore, the venom was fractionated using C18 reversed-phase high-performance liquid chromatography and the anticancer effect of each protein fraction was examined. Fraction 1 that contains a hydrophilic low molecular weight (approximately 7.5 kDa) protein was found to be the most cytotoxic and selective toward the breast cancer cell line (MCF7). The protein was identified using liquid chromatography-tandem mass spectrometry as a venom disintegrin, termed purpureomaculin in this study. Conclusion Taken together, the findings revealed the potent and selective cytotoxicity of a disintegrin protein isolated from the Malaysian T. purpureomaculatus venom and suggested its anticancer potential in drug discovery.
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Affiliation(s)
- Choo Hock Tan
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Jia Lee Liew
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Suerialoasan Navanesan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Kae Shin Sim
- Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Nget Hong Tan
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kae Yi Tan
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
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Roy A, Bharadvaja N. Venom-Derived Bioactive Compounds as Potential Anticancer Agents: A Review. Int J Pept Res Ther 2020. [DOI: 10.1007/s10989-020-10073-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Alfonso JJ, Kayano AM, Garay AFG, Simões-Silva R, Sobrinho JC, Vourliotis S, Soares AM, Calderon LA, Gómez MCV. Isolation, Biochemical Characterization and Antiparasitic Activity of BmatTX-IV, A Basic Lys49-Phospholipase A2 from the Venom of Bothrops mattogrossensis from Paraguay. Curr Top Med Chem 2019; 19:2041-2048. [DOI: 10.2174/1568026619666190723154756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/17/2019] [Accepted: 07/01/2019] [Indexed: 11/22/2022]
Abstract
Background:Functional and structural diversity of proteins of snake venoms is coupled with a wide repertoire of pharmacological effects. Snake venoms are targets of studies linked to searching molecules with biotechnological potential.Methods:A homologue phospholipase A2 (BmatTX-IV) was obtained using two chromatographic techniques. Mass spectrometry and two-dimensional gel electrophoresis were used to determine the molecular mass and isoelectric point, respectively. By means of Edman degradation chemistry, it was possible to obtain the partial sequence of amino acids that comprise the isolated toxin. Trypanocidal, leishmanicidal and cytoxic activity against Trypanosoma cruzi, Leishmania infantum and murine fibrobasts was determinated.Results:Combination of both chromatographic steps used in this study demonstrated efficacy to obtain the PLA2-Lys49. BmatTX-IV showed molecular mass and isoelectric point of 13.55 kDa and 9.3, respectively. Amino acid sequence of N-terminal region (51 residues) shows the presence of Lys49 residue at position 49, a distinctive trait of enzymatically inactive PLA2. Bothrops mattogrossensis snake venom showed IC50 values of 11.9 μg/mL against Leishmania infantum promastigotes and of 13.8 μg/mL against Trypanosoma cruzi epimastigotes, respectively. On the other hand, the venom showed a high cytotoxic activity (IC50 value of 16.7 μg/mL) against murine fibroblasts, whereas the BmatTX-IV showed IC50 value of 81.2 μg/mL.Conclusion:Physicochemical and biological characterization of snake venoms components is critically important, since these complex mixtures provide a source of molecules with antiparasitic potential, making further studies necessary to identify and characterize components with higher efficacy and selectivity.
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Affiliation(s)
- Jorge Javier Alfonso
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | - Anderson M. Kayano
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | - Ana Fidelina Gómez Garay
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | - Rodrigo Simões-Silva
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | - Juliana C. Sobrinho
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | | | - Andreimar M. Soares
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
| | - Leonardo A. Calderon
- Centro de Estudos de Biomoléculas Aplicadas à Saúde, CEBio, Fundação Oswaldo Cruz, FIOCRUZ, Fiocruz Rondônia, Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho-RO, Brazil
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8
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Rodrigues JP, Vasconcelos Azevedo FVP, Zoia MAP, Maia LP, Correia LIV, Costa-Cruz JM, de Melo Rodrigues V, Goulart LR. The Anthelmintic Effect on Strongyloides venezuelensis Induced by BnSP- 6, a Lys49-phospholipase A2 Homologue from Bothrops pauloensis Venom. Curr Top Med Chem 2019; 19:2032-2040. [DOI: 10.2174/1568026619666190723152520] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 05/20/2019] [Accepted: 07/01/2019] [Indexed: 12/13/2022]
Abstract
Background:
Phospholipases A2 (PLA2) from snake venoms have a broad potential as
pharmacological tools on medicine. In this context, strongyloidiasis is a neglected parasitic disease
caused by helminths of the genus Strongyloides. Currently, ivermectin is the drug of choice for treatment,
however, besides its notable toxicity, therapeutic failures and cases of drug resistance have been
reported. BnSP-6, from Bothorps pauloensis snake venom, is a PLA2 with depth biochemical characterization,
reporting effects against tumor cells and bacteria.
Objective:
The aim of this study is to demonstrate for the first time the action of the PLA2 on Strongyloides
venezuelensis.
Methods:
After 72 hours of treatment with BnSP-6 mortality of the infective larvae was assessed by motility
assay. Cell and parasite viability was evaluated by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl
tetrazolium bromide (MTT) assay. Furthermore, autophagic vacuoles were labeled with Monodansylcadaverine
(MDC) and nuclei of apoptotic cells were labeled with Propidium Iodide (PI). Tissue degeneration
of the parasite was highlighted by Transmission Electron Microscopy (TEM).
Results:
The mortality index demonstrated that BnSP-6 abolishes the motility of the parasite. In addition,
the MTT assay attested the cytotoxicity of BnSP-6 at lower concentrations when compared with
ivermectin, while autophagic and apoptosis processes were confirmed. Moreover, the anthelmintic effect
was demonstrated by tissue degeneration observed by TEM. Furthermore, we report that BnSP-6
showed low cytotoxicity on human intestinal cells (Caco-2).
Conclusion:
Altogether, our results shed light on the potential of BNSP-6 as an anthelmintic agent,
which can lead to further investigations as a tool for pharmaceutical discoveries.
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Affiliation(s)
- Jéssica Peixoto Rodrigues
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-248, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Fernanda Van Petten Vasconcelos Azevedo
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-227, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Mariana Alves Pereira Zoia
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-248, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Larissa Prado Maia
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-248, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Lucas Ian Veloso Correia
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-227, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Julia Maria Costa-Cruz
- Laboratory of Parasitological Diagnostics, Institute of Biomedical Sciences, Federal University of Uberlandia, Campus Umuarama BL-4C, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Veridiana de Melo Rodrigues
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-227, Uberlândia, Minas Gerais, 38400-902, Brazil
| | - Luiz Ricardo Goulart
- Laboratory of Nanobiotechnology, Institute of Biotechnology, Federal University of Uberlandia, Av. Amazonas s/n, Campus Umuarama BL-2E, SL-248, Uberlândia, Minas Gerais, 38400-902, Brazil
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Siigur J, Aaspõllu A, Siigur E. Biochemistry and pharmacology of proteins and peptides purified from the venoms of the snakes Macrovipera lebetina subspecies. Toxicon 2019; 158:16-32. [DOI: 10.1016/j.toxicon.2018.11.294] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 11/07/2018] [Accepted: 11/11/2018] [Indexed: 12/20/2022]
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Khoury J, Dabbousy R, Sadek R, Antoun S, Hleihel W, Legros C, Fajloun Z. Evidence for in vitro antiophidian properties of aqueous buds extract of Eucalyptus against Montivipera bornmuelleri venom. JOURNAL OF VENOM RESEARCH 2017; 8:25-30. [PMID: 29285352 PMCID: PMC5735799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/07/2017] [Accepted: 10/18/2017] [Indexed: 11/04/2022]
Abstract
Because snake venoms are complex mixtures of bioactive molecules, snake bites produce a large panel of symptoms which cannot be totally prevented by current antivenoms. Thus investigating plant extracts for antivenomics therapy approaches seemed relevant. Here, we evaluated the potency of the aqueous Buds extract of Eucalyptus (ABEE) to counteract the main enzymatic activities of Montivipera bornmuelleri venom. We showed that ABEE efficiently counteracts the proteolytic, Phospholipases A2 (PLA2), and L-aminoacid oxidase activities (LAAO) of M. bornmuelleri venom. ABEE was found to inhibit Acetylcholine esterase (AChE) and to exhibit a potent antioxidant activity. In addition, M. bornmuelleri venom displays antibacterial properties against Staphylococcus aureus, which were not inhibited by ABEE. We also showed that of M. bornmuelleri venom lacks AChE, either anti-AChE activities. ABEE represents a promising natural source of antivenomics compounds against the deleterious effects of M. bornmuelleri or other Vipera species bites.
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Affiliation(s)
- Joseph Khoury
- LAB3B, Azm Centre for Research in Biotechnology and its Application, EDST, Lebanese University, Tripoli, Lebanon
- Mitochondrial and Cardiovascular Pathophysiology – MITOVASC, Team 2, Cardiovascular Mechanotransduction, UMR CNRS 6015, INSERM U1083, UBL/Angers University, Angers, France
| | - Ranin Dabbousy
- LAB3B, Azm Centre for Research in Biotechnology and its Application, EDST, Lebanese University, Tripoli, Lebanon
| | - Riyad Sadek
- American University of Beirut, Department of Marine Sciences, Beirut, Lebanon
| | - Sayed Antoun
- Faculty of Sciences III, Department of Chemistry and Biochemistry, Lebanese University, Tripoli, Lebanon
| | | | - Christian Legros
- Mitochondrial and Cardiovascular Pathophysiology – MITOVASC, Team 2, Cardiovascular Mechanotransduction, UMR CNRS 6015, INSERM U1083, UBL/Angers University, Angers, France
| | - Ziad Fajloun
- LAB3B, Azm Centre for Research in Biotechnology and its Application, EDST, Lebanese University, Tripoli, Lebanon
- Faculty of Science III, Department of Biology, Lebanese University, Tripoli, Lebanon
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Nguyen TV, Osipov AV. A study of ribonuclease activity in venom of vietnam cobra. JOURNAL OF ANIMAL SCIENCE AND TECHNOLOGY 2017; 59:20. [PMID: 29021904 PMCID: PMC5611641 DOI: 10.1186/s40781-017-0145-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 06/22/2017] [Indexed: 11/10/2022]
Abstract
BACKGROUND Ribonuclease (RNase) is one of the few toxic proteins that are present constantly in snake venoms of all types. However, to date this RNase is still poorly studied in comparison not only with other toxic proteins of snake venom, but also with the enzymes of RNase group. The objective of this paper was to investigate some properties of RNase from venom of Vietnam cobra Naja atra. METHODS Kinetic methods and gel filtration chromatography were used to investigate RNase from venom of Vietnam cobra. RESULTS RNase from venom of Vietnam cobra Naja atra has some characteristic properties. This RNase is a thermostable enzyme and has high conformational stability. This is the only acidic enzyme of the RNase A superfamily exhibiting a high catalytic activity in the pH range of 1-4, with pHopt = 2.58 ± 0.35. Its activity is considerably reduced with increasing ionic strength of reaction mixture. Venom proteins are separated by gel filtration into four peaks with ribonucleolytic activity, which is abnormally distributed among the isoforms: only a small part of the RNase activity is present in fractions of proteins with molecular weights of 12-15 kDa and more than 30 kDa, but most of the enzyme activity is detected in fractions of polypeptides, having molecular weights of less than 9 kDa, that is unexpected. CONCLUSIONS RNase from the venom of Vietnam cobra is a unique member of RNase A superfamily according to its acidic optimum pH (pHopt = 2.58 ± 0.35) and extremely low molecular weights of its major isoforms (approximately 8.95 kDa for RNase III and 5.93 kDa for RNase IV).
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Affiliation(s)
- Thiet Van Nguyen
- Institute of Biotechnology, Vietnam Academy of Science and Technology (VAST), Hanoi, Vietnam
| | - A. V. Osipov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences (RAS), Moscow, Russia
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12
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Hassan EA, Abdel-Rahman MA, Ibrahim MM, Soliman MFM. In vitro antischistosomal activity of venom from the Egyptian snake Cerastes cerastes. Rev Soc Bras Med Trop 2017; 49:752-757. [PMID: 28001223 DOI: 10.1590/0037-8682-0241-2016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/18/2016] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION: We studied the potential in vitro antischistosomal activity of Cerastes cerastes venom on adult Schistosoma mansoni worms. METHODS: Live specimens of the horned viper snake, C. cerastes were collected from the Aswan Governorate (Egypt). Venom was collected from snakes by manual milking. Worms of S. mansoni were obtained from infected hamsters by perfusion and isolated from blood using phosphate buffer. Mortality rates of worms were monitored after 3 days of exposure to snake venom at LC50 and various sublethal concentrations (10, 5, 2.5µg/ml). Scanning electron microscopy was used to investigate tegumental changes in treated worms after exposure to LC50 doses of venom. RESULTS: The LC50 of C. cerastes venom was 21.5µg/ml. The effect of C. cerastes venom on Schistosoma worms varied according to their sex. The mortality rate of male and female worms after 48-h exposure was 83.3% and 50%, respectively. LC50 of C. cerastes venom induced mild to severe tegumental damage in Schistosoma worms in the form of destruction of the oral sucker, shrinkage and erosion of the tegument, and loss of some tubercle spines. CONCLUSIONS: The present study demonstrated that C. cerastes venom exerts potential in vitro antischistosomal activity in a time and dose-dependent manner. These results may warrant further investigations to develop novel schistosomicidal agents from C. cerastes snake venom.
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Affiliation(s)
- Ehssan Ahmed Hassan
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | | | - Mohamed Moussa Ibrahim
- Zoology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt.,Biology Department, Faculty of Science, Al-Baha University, Al-Baha, Saudi Arabia
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Osipov AV, Utkin YN. Antiproliferative Effects of Snake Venom Phospholipases A2 and Their Perspectives for Cancer Treatment. TOXINS AND DRUG DISCOVERY 2017. [DOI: 10.1007/978-94-007-6452-1_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Baîram D, Aissa I, Louati H, Othman H, Abdelkafi-Koubaa Z, Krayem N, El Ayeb M, Srairi-Abid N, Marrakchi N, Gargouri Y. Biochemical and monolayer characterization of Tunisian snake venom phospholipases. Int J Biol Macromol 2016; 89:640-6. [PMID: 27164498 DOI: 10.1016/j.ijbiomac.2016.05.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 11/17/2022]
Abstract
The present study investigated the kinetic and interfacial properties of two secreted phospholipases isolated from Tunisian vipers'venoms: Cerastes cerastes (CC-PLA2) and Macrovipera lebetina transmediterranea (MVL-PLA2). Results show that these enzymes have great different abilities to bind and hydrolyse phospholipids. Using egg-yolk emulsions as substrate at pH 8, we found that MVL-PLA2 has a specific activity of 1473U/mg at 37°C in presence of 1mM CaCl2. Furthermore the interfacial kinetic and binding data indicate that MVL-PLA2 has a preference to the zwitterionic phosphatidylcholine monolayers (PC). Conversely, CC-PLA2 was found to be able to hydrolyse preferentially negatively charged head group phospholipids (PG and PS) and exhibits a specific activity 9 times more important (13333U/mg at 60°C in presence of 3mM CaCl2). Molecular models of both CC-PLA2 and MVL-PLA2 3D structures have been built and their electrostatic potentials surfaces have been calculated. A marked anisotropy of the overall electrostatic charge distribution leads to a significantly difference in the dipole moment intensity between the two enzymes explaining the great differences in catalytic and binding properties, which seems to be governed by the electrostatic and hydrophobic forces operative at the surface of the two phospholipases.
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Affiliation(s)
- Douja Baîram
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Imen Aissa
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Route de Soukra, BP 1173, 3038 Sfax, Tunisia; Université de Sfax, Tunisia
| | - Hanen Louati
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Route de Soukra, BP 1173, 3038 Sfax, Tunisia; Université de Sfax, Tunisia
| | - Houcemeddine Othman
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Zaineb Abdelkafi-Koubaa
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Najeh Krayem
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Route de Soukra, BP 1173, 3038 Sfax, Tunisia; Université de Sfax, Tunisia
| | - Mohamed El Ayeb
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Najet Srairi-Abid
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Naziha Marrakchi
- Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques LR11IPT08, 13, Place Pasteur, BP 74, 1002 Tunis-Belvédère, Tunisia; Université de Tunis El Manar, Tunisia
| | - Youssef Gargouri
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), Route de Soukra, BP 1173, 3038 Sfax, Tunisia; Université de Sfax, Tunisia.
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Human breast cancer cell death induced by BnSP-6, a Lys-49 PLA2 homologue from Bothrops pauloensis venom. Int J Biol Macromol 2016; 82:671-7. [DOI: 10.1016/j.ijbiomac.2015.10.080] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/23/2015] [Accepted: 10/26/2015] [Indexed: 01/08/2023]
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Jiang Q, Liu Y, Duan D, Gou M, Wang H, Wang J, Li Q, Xiao R. Anti-angiogenic activities of CRBGP from buccal glands of lampreys (Lampetra japonica). Biochimie 2015; 123:7-19. [PMID: 26616010 DOI: 10.1016/j.biochi.2015.11.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 11/20/2015] [Indexed: 01/20/2023]
Abstract
Cysteine-rich secretory proteins (CRISPs), characterized by 16 conserved cysteines, are distributed in a wide range of organisms, such as secernenteas, amphibians, reptiles and mammals. In the previous studies, a novel CRISP family member (cysteine-rich buccal gland protein, CRBGP) was separated from the buccal gland of lampreys (Lampetra japonica, L. japonica). Lamprey CRBGP could not only suppress depolarization-induced contraction of rat tail arterial smooth muscle, but also block voltage-gated sodium channels (VGSCs). In the present study, the anti-angiogenic activities of lamprey CRBGP were investigated using endothelial cells and chick chorioallantoic membrane (CAM) models. In vitro assays, lamprey CRBGP is able to induce human umbilical vein endothelial cells (HUVECs) apoptosis by disturbing the calcium homeostasis and mitochondria functions. In addition, lamprey CRBGP could inhibit proliferation, adhesion, migration, invasion and tube formation of HUVECs by affecting the organization of F-actin and expression level of matrix metallo-proteinase 2 (MMP-2), matrix metallo-proteinase 9 (MMP-9) and vascular endothelial growth factor A (VEGFA) which are related to angiogenesis. In vivo assays, lamprey CRBGP could suppress the blood vessel formation in CAM models. Therefore, lamprey CRBGP is an important protein present in the buccal gland of lampreys and might help lampreys suppress the contraction of blood vessels, nociceptive responses and wound healing of host fishes during their feeding time. In addition, lamprey CRBGP might have the potential to act as an effective anti-angiogenic factor for the treatment of abnormal angiogenesis induced diseases.
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Affiliation(s)
- Qi Jiang
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Yu Liu
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Dandan Duan
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Meng Gou
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Hao Wang
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Jihong Wang
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China
| | - Qingwei Li
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China.
| | - Rong Xiao
- School of Life Sciences, Liaoning Normal University, Dalian 116081, PR China; Lamprey Research Center, Liaoning Normal University, Dalian 116081, PR China.
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Accary C, Rima M, Kouzahya A, Hleihel W, Sadek R, Desfontis JC, Fajloun Z, Hraoui-Bloquet S. Effect of the Montivipera bornmuelleri snake venom on human blood: coagulation disorders and hemolytic activities. ACTA ACUST UNITED AC 2014. [DOI: 10.13055/ojhmt_5_1_4.140609] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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