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Morjen M, Zakraoui O, Abdelkafi-Koubaa Z, Srairi-Abid N, Marrakchi N, Essafi-Benkhadir K, Jebali J. CC5 and CC8, Two Disintegrin Isoforms from Cerastes cerastes Snake Venom Decreased Inflammation Response In Vitro and In Vivo. Int J Mol Sci 2023; 24:12427. [PMID: 37569801 PMCID: PMC10418880 DOI: 10.3390/ijms241512427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 07/27/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Inflammation is associated with many pathology disorders and the malignant progression of most cancers. Therefore, targeting inflammatory pathways could provide a promising strategy for disease prevention and treatment. In this study, we experimentally investigated the anti-inflammatory effect of CC5 and CC8, two disintegrin isoforms isolated from Cerastes cerastes snake venom, on LPS-stimulated macrophages, both on human THP-1 and mouse RAW264.7 cell adherence and their underlying mechanisms by measuring cytokine release levels and Western blot assay. Equally, both molecules were evaluated on a carrageenan-induced edema rat model. Our findings suggest that CC5 and CC8 were able to reduce adhesion of LPS-stimulated macrophages both on human THP-1 and mouse RAW264.7 cells to fibrinogen and vitronectin through the interaction with the αvβ3 integrin receptor. Moreover, CC5 and CC8 reduced the levels of reactive oxygen species (ROS) mediated by the NF-κB, MAPK and AKT signaling pathways that lead to decreased production of the pro-inflammatory cytokines TNF-α, IL-6 and IL-8 and increased secretion of IL-10 in LPS-stimulated THP-1 and RAW264.7 cells. Interestingly, both molecules potently exhibited an anti-inflammatory effect in vivo by reducing paw swelling in rats. In light of these results, we can propose the CC5 and CC8 disintegrins as interesting tools to design potential candidates against inflammatory-related diseases.
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Affiliation(s)
- Maram Morjen
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (Z.A.-K.); (N.S.-A.); (N.M.)
| | - Ons Zakraoui
- Laboratory of Molecular Epidemiology and Experimental Pathology, LR16IPT04, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (O.Z.); (K.E.-B.)
| | - Zaineb Abdelkafi-Koubaa
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (Z.A.-K.); (N.S.-A.); (N.M.)
- Research Laboratory of Precision Medicine/Personalized Medicine and Oncology Investigation, LR21SP01, Salah Azaiez Institute, University of Tunis El Manar, Tunis 1007, Tunisia
| | - Najet Srairi-Abid
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (Z.A.-K.); (N.S.-A.); (N.M.)
| | - Naziha Marrakchi
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (Z.A.-K.); (N.S.-A.); (N.M.)
- Medicine School of Tunis, University of Tunis El Manar, 15 Djebel Lakhdhar Street, La Rabta, Tunis 1007, Tunisia
| | - Khadija Essafi-Benkhadir
- Laboratory of Molecular Epidemiology and Experimental Pathology, LR16IPT04, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (O.Z.); (K.E.-B.)
| | - Jed Jebali
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (Z.A.-K.); (N.S.-A.); (N.M.)
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Mlayah-Bellalouna S, Aissaoui-Zid D, Chantome A, Jebali J, Souid S, Ayedi E, Mejdoub H, Belghazi M, Marrakchi N, Essafi-Benkhadir K, Vandier C, Srairi-Abid N. Insights into the mechanisms governing P01 scorpion toxin effect against U87 glioblastoma cells oncogenesis. Front Pharmacol 2023; 14:1203247. [PMID: 37426811 PMCID: PMC10326281 DOI: 10.3389/fphar.2023.1203247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 06/12/2023] [Indexed: 07/11/2023] Open
Abstract
The emerging concept of small conductance Ca2+-activated potassium channels (SKCa) as pharmacological target for cancer treatment has significantly increased in recent years. In this study, we isolated the P01 toxin from Androctonus australis (Aa) scorpion venom and investigated its effect on biological properties of glioblastoma U87, breast MDA-MB231 and colon adenocarcinoma LS174 cancer cell lines. Our results showed that P01 was active only on U87 glioblastoma cells. It inhibited their proliferation, adhesion and migration with IC50 values in the micromolar range. We have also shown that P01 reduced the amplitude of the currents recorded in HEK293 cells expressing SK2 channels with an IC50 value of 3 pM, while it had no effect on those expressing SK3 channels. The investigation of the SKCa channels expression pattern showed that SK2 transcripts were expressed differently in the three cancer cell lines. Particularly, we highlighted the presence of SK2 isoforms in U87 cells, which could explain and rely on the specific activity of P01 on this cell line. These experimental data highlighted the usefulness of scorpion peptides to decipher the role of SKCa channels in the tumorigenesis process, and develop potential therapeutic molecules targeting glioblastoma with high selectivity.
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Affiliation(s)
- Saoussen Mlayah-Bellalouna
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Dorra Aissaoui-Zid
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Aurelie Chantome
- N2C UMR 1069, Institut national de la santé et de la recherche médicale, University of Tours, Tours, France
| | - Jed Jebali
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Soumaya Souid
- LR16IPT04 Laboratoire d’Epidémiologie Moléculaire et Pathologie Expérimentale, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Emna Ayedi
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Hafedh Mejdoub
- USCR Séquenceur de Protéines, Faculté des Sciences de Sfax, Route de Soukra, Sfax, Tunisia
| | - Maya Belghazi
- Aix Marseille Université, CNRS, Plateforme Protéomique, IMM FR3479, Marseille Protéomique (MaP), Marseille, France
| | - Naziha Marrakchi
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Khadija Essafi-Benkhadir
- LR16IPT04 Laboratoire d’Epidémiologie Moléculaire et Pathologie Expérimentale, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Christophe Vandier
- N2C UMR 1069, Institut national de la santé et de la recherche médicale, University of Tours, Tours, France
| | - Najet Srairi-Abid
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
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Souissi C, Marzouki S, Elbini-Dhouib I, Jebali J, Oliveira F, Valenzuela JG, Srairi-Abid N, Kamhawi S, Ben Ahmed M. PpSP32, the Phlebotomus papatasi immunodominant salivary protein, exerts immunomodulatory effects on human monocytes, macrophages, and lymphocytes. Parasit Vectors 2023; 16:1. [PMID: 36593519 PMCID: PMC9806891 DOI: 10.1186/s13071-022-05627-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/19/2022] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND The saliva of sand flies, vectors of Leishmania parasites, contains several components that exert pharmacological activity facilitating the acquisition of blood by the insect and contributing to the establishment of infection. Previously, we demonstrated that PpSP32 is the immunodominant salivary antigen in humans exposed to Phlebotomus papatasi bites and validated its usefulness as a predictive biomarker of disease. PpSP32, whose functions are little known to date, is an intriguing protein due to its involvement in the etiopathogenesis of pemphigus, an auto-immune disease. Herein, we aimed to better decipher its role through the screening of several immunomodulatory activity either on lymphocytes or on monocytes/macrophages. METHODS Peripheral mononuclear cells from healthy volunteers were stimulated with anti-CD3/anti-CD28 antibodies, phytohemagglutinin, phorbol 12-myristate 13-acetate/ionomycin, or lipopolysaccharide in the presence of increasing doses of PpSP32. Cell proliferation was measured after the addition of tritiated thymidine. Monocyte activation was tested by analyzing the expression of CD86 and HLA-DR molecules by flow cytometry. Cytokine production was analyzed in culture supernatants by ELISA. THP-1-derived macrophages were stimulated with LPS in the presence of increasing doses of PpSP32, and cytokine production was analyzed in culture supernatants by ELISA and multiplex technique. The effect of PpSP32 on NF-kB signaling was tested by Western blot. The anti-inflammatory activity of PpSP32 was assessed in vivo in an experimental inflammatory model of carrageenan-induced paw edema in rats. RESULTS Our data showed that PpSP32 down-modulated the expression of activation markers in LPS-stimulated monocytes and THP1-derived macrophages. This protein negatively modulated the secretion of Th1 and Th2 cytokines by human lymphocytes as well as pro-inflammatory cytokines by monocytes, and THP1-derived macrophages. PpSP32 treatment led to a dose-dependent reduction of IκB phosphorylation. When PpSP32 was injected into the paw of carrageenan-injected rats, edema was significantly reduced. CONCLUSIONS Our data indicates that PpSP32 induces a potent immunomodulatory effect on monocytes and THP-1-derived macrophages. This inhibition could be mediated, among others, by the modulation of the NF-kB signaling pathway. The anti-inflammatory activity of PpSP32 was confirmed in vivo in the carrageenan-induced paw edema model in rats.
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Affiliation(s)
- Cyrine Souissi
- grid.418517.e0000 0001 2298 7385Laboratory of Transmission, Control and Immunobiology of Infections (LTCII), LR11IPT02, Pasteur Institute de Tunis, Tunis, Tunisia
| | - Soumaya Marzouki
- grid.418517.e0000 0001 2298 7385Laboratory of Transmission, Control and Immunobiology of Infections (LTCII), LR11IPT02, Pasteur Institute de Tunis, Tunis, Tunisia
| | - Ines Elbini-Dhouib
- grid.12574.350000000122959819Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, 1002 Tunis, Tunisia
| | - Jed Jebali
- grid.12574.350000000122959819Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, 1002 Tunis, Tunisia
| | - Fabiano Oliveira
- grid.94365.3d0000 0001 2297 5165Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institute of Health, Rockville, MD USA
| | - Jesus G. Valenzuela
- grid.94365.3d0000 0001 2297 5165Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institute of Health, Rockville, MD USA
| | - Najet Srairi-Abid
- grid.12574.350000000122959819Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Pasteur Institute of Tunis, University of Tunis El Manar, 1002 Tunis, Tunisia
| | - Shaden Kamhawi
- grid.94365.3d0000 0001 2297 5165Vector Molecular Biology Section, Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institute of Health, Rockville, MD USA
| | - Melika Ben Ahmed
- grid.418517.e0000 0001 2298 7385Laboratory of Transmission, Control and Immunobiology of Infections (LTCII), LR11IPT02, Pasteur Institute de Tunis, Tunis, Tunisia ,grid.12574.350000000122959819Faculty of Medicine de Tunis, University of Tunis El Manar, Tunis, Tunisia
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Jebali J, Ghazghazi H, Aouadhi C, ELBini-Dhouib I, Ben Salem R, Srairi-Abid N, Marrakchi N, Rigane G. Tunisian Native Mentha pulegium L. Extracts: Phytochemical Composition and Biological Activities. Molecules 2022; 27:molecules27010314. [PMID: 35011545 PMCID: PMC8746529 DOI: 10.3390/molecules27010314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/25/2021] [Accepted: 12/27/2021] [Indexed: 01/29/2023]
Abstract
Mint species (Lamiaceae family) have been used as traditional remedies for the treatment of several diseases. In this work, we aimed to characterize the biological activities of the total phenolic and flavonoid contents of Mentha pulegium L. extracts collected from two different regions of Tunisia. The highest amounts of total phenols (74.45 ± 0.01 mg GAE/g DW), flavonoids (28.87 ± 0.02 mg RE/g DW), and condensed tannins (4.35 ± 0.02 mg CE/g DW) were found in the Bizerte locality. Methanolic leaf extracts were subjected to HPLC-UV analysis in order to identify and quantify the phenolic composition. This technique allowed us to identify seven phenolic compounds: two phenolic acids and five flavonoid compounds, such as eriocitrin, hesperidin, narirutin, luteolin, and isorhoifolin, which were found in both extracts with significant differences between samples collected from the different regions (p < 0.05). Furthermore, our results showed that the methanolic extract from leaves collected from Bizerte had the highest antioxidant activities (DPPH IC50 value of 16.31 μg/mL and 570.08 μmol Fe2+/g, respectively). Both extracts showed high radical-scavenging activity as well as significant antimicrobial activity against eight tested bacteria. The highest antimicrobial activities were observed against Gram-positive bacteria with inhibition zone diameters and MIC values ranging between 19 and 32 mm and 40 and 160 µg/mL, respectively. Interestingly, at 10 μg/mL, the extract had a significant effect on cell proliferation of U87 human glioblastoma cells. These findings open perspectives for the use of Mentha pulegium L. extract in green pharmacy, alternative/complementary medicine, and natural preventive therapies for the development of effective antioxidant, antibacterial, and/or antitumoral drugs.
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Affiliation(s)
- Jed Jebali
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Institut Pasteur of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (N.S.-A.); (N.M.)
- Correspondence: or ; Tel.: +216-71-844-688 (ext. 491); Fax: +216-71-791-833
| | - Hanene Ghazghazi
- Laboratory of Management and Valorization of Forest Resources, National Research Institute of Rural Engineering, Water and Forestry (INRGREF), University of Carthage, Tunis 1004, Tunisia;
| | - Chedia Aouadhi
- Laboratoire d’Epidémiologie et Microbiologie Vétérinaire, Groupes de Bactériologie et Développement Biotechnologique, Institut Pasteur de Tunis, Université de Tunis El Manar, 13, Place Pasteur, B.P. 74, Tunis 1002, Tunisia;
| | - Ines ELBini-Dhouib
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Institut Pasteur of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (N.S.-A.); (N.M.)
| | - Ridha Ben Salem
- Laboratory of Organic Chemistry LR17ES08, Faculty of Sciences of Sfax, University of Sfax, B.P. 1171, Sfax 3038, Tunisia; (R.B.S.); (G.R.)
| | - Najet Srairi-Abid
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Institut Pasteur of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (N.S.-A.); (N.M.)
| | - Naziha Marrakchi
- Laboratory of Biomolecules, Venoms and Theranostic Applications, LR20IPT01, Institut Pasteur of Tunis, University of Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (N.S.-A.); (N.M.)
- Medicine School of Tunis, 15 Djebel Lakhdhar, Street La Rabta, University of Tunis El Manar, Tunis 1007, Tunisia
| | - Ghayth Rigane
- Laboratory of Organic Chemistry LR17ES08, Faculty of Sciences of Sfax, University of Sfax, B.P. 1171, Sfax 3038, Tunisia; (R.B.S.); (G.R.)
- Chemistry-Physics Department, Faculty of Sciences and Technology of Sidi Bouzid, University of Kairouan, B.P. 380, Sidi Bouzid 9100, Tunisia
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Abdelkafi-Koubaa Z, ELBini-Dhouib I, Souid S, Jebali J, Doghri R, Srairi-Abid N, Essafi-Benkhadir K, Micheau O, Marrakchi N. Pharmacological Investigation of CC-LAAO, an L-Amino Acid Oxidase from Cerastes cerastes Snake Venom. Toxins (Basel) 2021; 13:toxins13120904. [PMID: 34941741 PMCID: PMC8704781 DOI: 10.3390/toxins13120904] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/01/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
Snake venom proteins, which are responsible for deadly snakebite envenomation, induce severe injuries including neurotoxicity, myotoxicity, cardiotoxicity, hemorrhage, and the disruption of blood homeostasis. Yet, many snake-venom proteins have been developed as potential drugs for treating human diseases due to their pharmacological effects. In this study, we evaluated the use of, an L-amino acid oxidase isolated from Cerastes cerastes snake venom CC-LAAO, as a potential anti-glioblastoma drug, by investigating its in vivo and in vitro pharmacological effects. Our results showed that acute exposure to CC-LAAO at 1 and 2.5 µg/mL does not induce significant toxicity on vital organs, as indicated by the murine blood parameters including aspartate transaminase (AST), alanine transaminase (ALT), lactate dehydrogenase (LDH) activities, and creatinine levels. The histopathological examination demonstrated that only at high concentrations did CC-LAAO induce inflammation and necrosis in several organs of the test subjects. Interestingly, when tested on human glioblastoma U87 cells, CC-LAAO induced a dose-dependent apoptotic effect through the H2O2 generated during the enzymatic reaction. Taken altogether, our data indicated that low concentration of CC-LAAO may be safe and may have potential in the development of anti-glioblastoma agents.
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Affiliation(s)
- Zaineb Abdelkafi-Koubaa
- Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (J.J.); (N.S.-A.); (N.M.)
- Correspondence:
| | - Ines ELBini-Dhouib
- Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (J.J.); (N.S.-A.); (N.M.)
| | - Soumaya Souid
- Laboratoire d’Epidémiologie Moléculaire et de Pathologie Expérimentale (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (S.S.); (K.E.-B.)
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Drive, Monroe, LA 71201, USA
| | - Jed Jebali
- Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (J.J.); (N.S.-A.); (N.M.)
| | - Raoudha Doghri
- Département d’Anatomie Pathologique, Institut Salah Azaiez, Bab Saadoun, Tunis 1006, Tunisia;
| | - Najet Srairi-Abid
- Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (J.J.); (N.S.-A.); (N.M.)
| | - Khadija Essafi-Benkhadir
- Laboratoire d’Epidémiologie Moléculaire et de Pathologie Expérimentale (LR16IPT04), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (S.S.); (K.E.-B.)
| | - Olivier Micheau
- Lipides Nutrition Cancer, INSERM-UMR 1231, Université de Bourgogne Franche-Comté, UFR Science de Santé, 7 Bd Jeanne d’Arc, 21000 Dijon, France;
| | - Naziha Marrakchi
- Laboratoire des Biomolécules, Venins et Applications Théranostiques (LR20IPT01), Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis 1002, Tunisia; (I.E.-D.); (J.J.); (N.S.-A.); (N.M.)
- Faculté de Médecine de Tunis, Université de Tunis El Manar, Tunis 1068, Tunisia
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Jebali J, Zakraoui O, Aissaoui D, Abdelkafi-Koubaa Z, Srairi-Abid N, Marrakchi N, Essafi-Benkhadir K. Lebecetin, a snake venom C-type lectin protein, modulates LPS-induced inflammatory cytokine production in human THP-1-derived macrophages. Toxicon 2020; 187:144-150. [PMID: 32918926 DOI: 10.1016/j.toxicon.2020.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/11/2020] [Accepted: 09/07/2020] [Indexed: 10/25/2022]
Abstract
The excessive production of inflammatory mediators results in an overactive immune response leading to the worsening of various human diseases. Thus, there is a still need to identify molecules able to regulate the inflammatory response. Lebecetin, a C-type lectin protein isolated from Macrovipera lebetina snake venom, was previously characterized as a platelet aggregation inhibitor and antitumor active biomolecule. In the present work, we investigated its effect on the production of some cytokines linked to inflammatory response and the underlying mechanisms in lipopolysaccharide (LPS)-induced THP1 macrophages. Interestingly, we found that lebecetin reduced the levels of the pro-inflammatory cytokines TNF-α, IL-6, and IL-8 while it partially increased LPS-induced secretion of the immunomodulatory cytokine IL-10. Furthermore, this modulatory effect was accompanied by decreased activation of ERK1/2, p38, AKT kinases and NF-κB along with reduced expression of αvβ3 integrin. Thus, this study highlights the promising role of lebecetin as a natural biomolecule that could manage the inflammatory response involved in the development and progression of inflammatory diseases.
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Affiliation(s)
- Jed Jebali
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia.
| | - Ons Zakraoui
- Institut Pasteur de Tunis, LR11IPT04/LR16IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Dorra Aissaoui
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Zaineb Abdelkafi-Koubaa
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Najet Srairi-Abid
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia
| | - Naziha Marrakchi
- Institut Pasteur de Tunis, LR11IPT08/LR16IPT08 Laboratoire des Venins et Molécules Thérapeutiques, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia; Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Khadija Essafi-Benkhadir
- Institut Pasteur de Tunis, LR11IPT04/LR16IPT04 Laboratoire d'Epidémiologie Moléculaire et de Pathologie Expérimentale Appliquée Aux Maladies Infectieuses, 1002, Tunis, Tunisia; Université de Tunis El Manar, 1068, Tunis, Tunisia.
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Morjen M, Othman H, Abdelkafi-Koubaa Z, Messadi E, Jebali J, El Ayeb M, Abid NS, Luis J, Marrakchi N. Targeting α1 inserted domain (I) of α1β1 integrin by Lebetin 2 from M. lebetina transmediterranea venom decreased tumorigenesis and angiogenesis. Int J Biol Macromol 2018; 117:790-799. [DOI: 10.1016/j.ijbiomac.2018.05.230] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 01/18/2023]
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Aissaoui D, Mlayah-Bellalouna S, Jebali J, Abdelkafi-Koubaa Z, Souid S, Moslah W, Othman H, Luis J, ElAyeb M, Marrakchi N, Essafi-Benkhadir K, Srairi-Abid N. Functional role of Kv1.1 and Kv1.3 channels in the neoplastic progression steps of three cancer cell lines, elucidated by scorpion peptides. Int J Biol Macromol 2018; 111:1146-1155. [DOI: 10.1016/j.ijbiomac.2018.01.144] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 01/19/2018] [Accepted: 01/20/2018] [Indexed: 12/11/2022]
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Ellijimi C, Ben Hammouda M, Othman H, Moslah W, Jebali J, Mabrouk HB, Morjen M, Haoues M, Luis J, Marrakchi N, Essafi-Benkhadir K, Srairi-Abid N. Helix aspersa maxima mucus exhibits antimelanogenic and antitumoral effects against melanoma cells. Biomed Pharmacother 2018; 101:871-880. [PMID: 29635896 DOI: 10.1016/j.biopha.2018.03.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 03/05/2018] [Accepted: 03/05/2018] [Indexed: 01/10/2023] Open
Abstract
Snail secretion is currently revolutionizing the world of cosmetics and human skin care. The efficacy of snail secretion in wounds healing has been proven both in vitro and by clinical studies. However, the potential anti-tumor effect of snail secretion was poorly investigated. In this report, our in vitro study showed that Helix aspersa maxima species snail slime (SS) could not only treat melanogenesis but also endowed with anti-tumoral activity against human melanoma cells. Indeed, SS reduced melanin content and tyrosinase activity on B16F10 cells with IC50 values of 288 μg/mL and 286 μg/mL, respectively, without altering cell viability. This effect was also observed, at a lesser extent, on human melanoma IGR-39 and SK-MEL-28 cell lines. On another hand, SS specifically inhibited the viability of IGR-39 and SK-MEL-28 cells associated to an apoptotic effect highlighted by PARP cleavage. It is worth to note that SS did not affect the viability of B16F10 cells and non tumorigenic HaCaT cells. Interestingly, this extract was found to inhibit migration and invasion of both human melanoma cells through reducing the expression of Matrix metalloproteinase MMP2. Snail slime also exerted a high inhibitory effect on IGR-39 cell adhesion through blocking the function of α2β1 (45%), αvβ3 (38%) integrins and by reducing the expression levels of αv and β1 integrins. The presented results shed light on the potential anti-melanoma effect of SS and support its use against skin diseases.
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Affiliation(s)
- Chedli Ellijimi
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Manel Ben Hammouda
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire d'Epidémiologie Moléculaire et Pathologie Expérimentale appliquée aux Maladies infectieuses LR11IPT04/LR16IPT04, Tunis, 1002, Tunisia
| | - Houcemeddine Othman
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Wassim Moslah
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Jed Jebali
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Hazem Ben Mabrouk
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Maram Morjen
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Meriam Haoues
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire de Recherche sur la Transmission, le Contrôle et l'Immunobiologie des Infections, LR11IPT02/ LR16IPT02 LTCII, Tunis, 1002, Tunisia
| | - José Luis
- INSERM UMR 911-Centre de Recherche en Oncologie Biologique et Oncopharmacologie (CRO2), Aix-Marseille Université, 27 Bd Jean Moulin, 13385, Marseille Cedex 5, France
| | - Naziha Marrakchi
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia
| | - Khadija Essafi-Benkhadir
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire d'Epidémiologie Moléculaire et Pathologie Expérimentale appliquée aux Maladies infectieuses LR11IPT04/LR16IPT04, Tunis, 1002, Tunisia
| | - Najet Srairi-Abid
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et biomolécules thérapeutiques LR11IPT08/ LR16IPT08, Tunis, 1002, Tunisia.
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Maatoug R, Jebali J, Guieu R, De Waard M, Kharrat R. BotAF, a new Buthus occitanus tunetanus scorpion toxin, produces potent analgesia in rodents. Toxicon 2018; 149:72-85. [PMID: 29337220 DOI: 10.1016/j.toxicon.2018.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 11/25/2022]
Abstract
This work reports the purification of new potent scorpion neuropeptide, named BotAF, by an activity-guided screening approach. BotAF is a 64-residue long-chain peptide that shares very high similarity with the original β-like scorpion toxin group, in which several peptides have been characterized to be anti-nociceptive in rodents. BotAF administration to rodents does not produce any toxicity or motor impairment, including at high doses. In all models investigated, BotAF turned out to be an efficient peptide in abolishing acute and inflammatory (both somatic and visceral) pain in rodents. It performs with high potency compared to standard analgesics tested in the same conditions. The anti-nociceptive activity of BotAF depends on the route of injection: it is inactive when tested by i.c.v. or i.v. routes but gains in potency when pre-injected locally (in the same compartment than the irritant itself) or by i.t. root 40 to 60 min before pain induction, respectively. BotAF is not an AINS-like compound as it fails to reduce inflammatory edema. Also, it does not activate the opioidergic system as its activity is not affected by naloxone. BotAF does also not bind onto RyR and has low activity towards DRG ion channels (particularly TTX sensitive Na+ channels) and does not bind onto rat brain synaptosome receptors. In somatic and visceral pain models, BotAF dose-dependently inhibited lumbar spinal cord c-fos/c-jun mRNA up regulation. Altogether, our data favor a spinal or peripheral anti-nociceptive mode of action of BotAF.
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Affiliation(s)
- Riadh Maatoug
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques, 13, Place Pasteur BP-74, Tunis, 1002, Tunisia
| | - Jed Jebali
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques, 13, Place Pasteur BP-74, Tunis, 1002, Tunisia
| | - Régis Guieu
- Biochimie, Hôpital de la Timone, 13005, Marseille, France
| | - Michel De Waard
- Inserm U1087, Institut du Thorax, groupe IIb, Université de Nantes, 8 quai moncousu, 44000, Nantes, France; Smartox Biotechnology, 570 rue de la chimie, bâtiment Nanobio, 38700, Saint Martin d'Hères, France
| | - Riadh Kharrat
- Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire des Venins et Biomolécules Thérapeutiques, 13, Place Pasteur BP-74, Tunis, 1002, Tunisia.
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11
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Abdelkafi-Koubaa Z, Jebali J, Othman H, Morjen M, Aissa I, Zouari-Kesentini R, Bazaa A, Ellefi AA, Majdoub H, Srairi-Abid N, Gargouri Y, El Ayeb M, Marrakchi N. A thermoactive l-amino acid oxidase from Cerastes cerastes snake venom: Purification, biochemical and molecular characterization. Toxicon 2014; 89:32-44. [DOI: 10.1016/j.toxicon.2014.06.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2014] [Revised: 06/14/2014] [Accepted: 06/25/2014] [Indexed: 11/28/2022]
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12
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Jebali J, Fakhfekh E, Morgen M, Srairi-Abid N, Majdoub H, Gargouri A, El Ayeb M, Luis J, Marrakchi N, Sarray S. Lebecin, a new C-type lectin like protein from Macrovipera lebetina venom with anti-tumor activity against the breast cancer cell line MDA-MB231. Toxicon 2014; 86:16-27. [PMID: 24814013 DOI: 10.1016/j.toxicon.2014.04.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 04/15/2014] [Accepted: 04/29/2014] [Indexed: 01/20/2023]
Abstract
C-type lectins like proteins display various biological activities and are known to affect especially platelet aggregation. Few of them have been reported to have anti-tumor effects. In this study, we have identified and characterized a new C-type lectin like protein, named lebecin. Lebecin is a heterodimeric protein of 30 kDa. The N-terminal amino acid sequences of both subunits were determined by Edman degradation and the entire amino acid sequences were deduced from cDNAs. The precursors of both lebecin subunits contain a 23-amino acid residue signal peptide and the mature α and β subunits are composed of 129 and 131 amino acids, respectively. Lebecin is shown to be a potent inhibitor of MDA-MB231 human breast cancer cells proliferation. Furthermore, lebecin dose-dependently inhibited the integrin-mediated attachment of these cells to different adhesion substrata. This novel C-type lectin also completely blocked MDA-MB231 cells migration towards fibronectin and fibrinogen in haptotaxis assays.
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Affiliation(s)
- Jed Jebali
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia.
| | - Emna Fakhfekh
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia
| | - Maram Morgen
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia
| | - Najet Srairi-Abid
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia
| | - Hafedh Majdoub
- USCR séquenceur de protéines, Faculté des sciences de Sfax, Route de Soukra, km 3.5, BP 1171, 3000 Sfax, Tunisia
| | - Ali Gargouri
- Laboratoire de Valorisation de la Biomasse et Production de Protéines chez les Eucaryotes, Centre de la Biotechnologie de Sfax (CBS), Tunisia
| | - Mohamed El Ayeb
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia
| | - José Luis
- Aix Marseille Université, Institut National de la Santé et de la Recherche Médicale, UMR_S 911, Marseille, France
| | - Naziha Marrakchi
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia
| | - Sameh Sarray
- Laboratoire des venins et biomolécules thérapeutiques, Institut Pasteur de Tunis, B.P. 74, 1002 Tunis Belvédère, Tunisia; Faculté des Sciences de Tunis, Université de Tunis El Manar, 2092, Tunisia
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13
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Akkari H, Jebali J, Gharbi M, Mhadhbi M, Awadi S, Darghouth MA. Epidemiological study of sympatric Haemonchus species and genetic characterization of Haemonchus contortus in domestic ruminants in Tunisia. Vet Parasitol 2013; 193:118-25. [DOI: 10.1016/j.vetpar.2012.12.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2012] [Revised: 12/06/2012] [Accepted: 12/13/2012] [Indexed: 10/27/2022]
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14
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Jebali J, Jeanneau C, Morjen M, Mathieu S, Bazaa A, el Ayeb M, Luis J, Gargouri A, Marrakchi N, el Battari A. Expression of a functional recombinant C-type lectin-like protein lebecetin in the human embryonic kidney cells. Biotechnol Prog 2012; 28:1560-5. [DOI: 10.1002/btpr.1632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 08/14/2012] [Indexed: 11/08/2022]
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15
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Jebali J, Jeanneau C, Bazaa A, Mathieu S, El Ayeb M, Luis J, El Battari A, Marrakchi N. [Selectins as adhesion molecules and potential therapeutic target]. Arch Inst Pasteur Tunis 2011; 88:3-18. [PMID: 23461138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Selectins belong to the family of adhesion molecules that recognize sugars as ligands through their Carbohydrate Recognition Domain (CRD). There are three types of selectin: the L-selectin (CD62L), which is constitutively expressed by most leukocyte populations, the P-selectin (CD62P) is found on activated platelets and endothelial cells, and the E-selectin (CD62E) expressed by activated endothelial cells. These three molecules exhibit high homology in their structures. Selectin-ligand interactions are among the most studied protein-glycan interactions in biology. The selectins and theirs ligands are involved in regulating inflammatory and immunological events that occur at the interface of the bloodstream and vessel walls. Their molecular partners are surface glycoconjugates harboring groups of the sialyl-Lewis antigens. This review presents an inventory of our current knowledge on the structures and functions of selectins and their ligands. We also provide an update on their involvement in pathophysiological processes, especially during inflammation and tumor development.
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Affiliation(s)
- J Jebali
- Laboratoire des Venins et Toxines, Institut Pasteur de Tunis 13, Place Pasteur 1002 Tunis Belvédère, Tunisie
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16
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Banni M, Negri A, Dagnino A, Jebali J, Ameur S, Boussetta H. Acute effects of benzo[a]pyrene on digestive gland enzymatic biomarkers and DNA damage on mussel Mytilus galloprovincialis. Ecotoxicol Environ Saf 2010; 73:842-848. [PMID: 20071027 DOI: 10.1016/j.ecoenv.2009.12.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 12/24/2009] [Accepted: 12/29/2009] [Indexed: 05/28/2023]
Abstract
In the present study, mussel (Mytilus galloprovincialis) digestive gland biotransformation and detoxification responses to acute exposure to the polycyclic aromatic hydrocarbon benzo[a]pyrene (B[a]P) were investigated. Mussels were exposed to a sublethal dose of B[a]P (75 nM; 19 microg/l per animal) for 24, 48 and 72h. The following biological responses were measured in the digestive gland tissues: (1) B[a]P hydroxylase (BPH) activity, as phase I biotransformation parameter; (2) glutathione S-transferase (GST) activity as a phase II conjugation enzyme, (3) catalase (CAT) activity as potential biomarker of oxidative stress, (4) acetylcholinesterase (AChE) activity as an indication of possible neurotoxicity response. DNA damage was assessed over time using the single cell gel electrophoresis comet assay and the micronuclei test. BPH and GST activities showed an increasing trend over exposure period. CAT activity showed a symmetrical bell shape response with a maximum at 48h. AChE activity was significantly depressed after 48 and 72h exposure to B[a]P. Comet assay and micronuclei test in digestive gland cells suggest that B[a]P exposure induced significant DNA damage with a maximum response after 72h exposure.
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Affiliation(s)
- M Banni
- Laboratory of Biochemistry and Environmental Toxicology, ISA, Chott-Mariem, 4042 Sousse, Tunisia.
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17
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Ghedira J, Jebali J, Bouraoui Z, Banni M, Guerbej H, Boussetta H. Metallothionein and metal levels in liver, gills and kidney of Sparus aurata exposed to sublethal doses of cadmium and copper. Fish Physiol Biochem 2010; 36:101-107. [PMID: 19082751 DOI: 10.1007/s10695-008-9295-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2007] [Accepted: 05/12/2008] [Indexed: 05/27/2023]
Abstract
The levels of metallothionein (MT), a biomarker of metal exposure, and of Cd and Cu, known as MT inducers, were investigated in Sparus aurata intraperitoneally injected with 500 microg/kg of Cu and Cd for 2 days. MT and metal concentrations (Cd and Cu) were determined in liver, gills and kidney. MT levels were significantly increased in all investigated tissues, with the highest value in liver of Cu as Cd-treated fishes (3.56-fold and 3.3- fold, respectively). Metal concentrations were statistically different between all tissues. Highest metal concentrations were in the liver. The higher metal concentrations and MT induction levels support the main role of MT in metal homeostasis and detoxification.
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Affiliation(s)
- J Ghedira
- Laboratoire de Biochimie et de Toxicologie Environnementale, Institut Supérieur d'Agronomie de Chott-Mariem, 4042 Sousse, Tunisia
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18
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Jebali J, Bazaa A, Sarray S, Benhaj K, Karboul A, El Ayeb M, Marrakchi N, Gargouri A. C-type lectin protein isoforms of Macrovipera lebetina: cDNA cloning and genetic diversity. Toxicon 2009; 53:228-37. [DOI: 10.1016/j.toxicon.2008.11.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2008] [Revised: 10/22/2008] [Accepted: 11/05/2008] [Indexed: 11/29/2022]
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Banni M, Jebali J, Daubeze M, Clerandau C, Guerbej H, Narbonne JF, Boussetta H. Monitoring pollution in Tunisian coasts: application of a classification scale based on biochemical markers. Biomarkers 2008; 10:105-16. [PMID: 16076726 DOI: 10.1080/13547500500107497] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Over the past decade, molecular, biochemical and cellular markers have been extensively used in pollution monitoring of aquatic environments. Biochemical markers have been selected among early molecular events occurring in the toxicological mechanisms of main contaminants. This paper assesses the marine environment quality along the Tunisian coasts using a statistical approach. Clams (Ruditapes decussatus) were collected during the four seasons of 2003 on seven different sites from the Tunisian coasts. Oxidative stress was evaluated in gills using catalase activity (Cat), neutral lipids and malonedialdehyde accumulation. Glutathione S-transferase activity is related to the conjugation of organic compounds and was evaluated in both, gills and digestive glands. Acetylcholinesterase activity was evaluated as the biomarker of exposure to organophosphorous, carbamate pesticides and heavy metals. For each biomarker, a discriminatory factor was calculated and a response index allocated. For each site, a global response index was calculated as the sum of the response index of each biomarker. Discriminant analysis shows significant differences between sites and seasons compared with control sample. Faroua (site 1) and Menzel Jemile (site 2) seem to be the less polluted with respect to the other sites for all seasons. Gargour (site 6) shows the highest Multimarker Pollution Index during the four seasons, indicating higher contamination level.
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Affiliation(s)
- M Banni
- Ecole Supérieure d'Horticulture, Laboratoire de Biochimie et de Toxicologie Environnementale, Chott-Mariem, Sousse, Tunisia.
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20
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Banni M, Dondero F, Jebali J, Guerbej H, Boussetta H, Viarengo A. Assessment of heavy metal contamination using real-time PCR analysis of mussel metallothionein mt10 and mt20 expression: a validation along the Tunisian coast. Biomarkers 2007; 12:369-83. [PMID: 17564843 DOI: 10.1080/13547500701217061] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
In mussel Mytilus galloprovincialis tissues, metallothionein belongs to two different gene classes, mt10 and mt20, showing differential expression at both basal conditions and under heavy metal challenge. In this study, a new more highly sensitive technique, expression analysis of mt10 and mt20 mRNA levels by quantitative reverse transcription polymerase chain reaction, was used to assess the effects of heavy metal contamination in the digestive glands of mussels caged along the Tunisian coast. To validate the new assay, total metallothionein protein, amount of heavy metals (zinc, copper, cadmium), and a biomarker of oxidative stress such as malondialdehyde content, were assessed in the same tissues. At the investigated sites, the molecular assay showed variations of mt20 relative gene expression levels within one or two orders of magnitude, with maximum values at two sites severely polluted with cadmium, Mahres (100-fold) and Menzel Jemile (165-fold). Changes in mt10 expression were recorded at all sites where copper had significantly accumulated, although fold induction levels were less pronounced than those of mt20. In this paper, gene expression data are discussed in relation to the studied biomarkers, demonstrating that the molecular technique based on the differential expression of mt10 and mt20 genes represents (i) a useful and robust tool for studying and monitoring heavy metal pollution under field conditions, and (ii) an improvement in the application of metallothionein as a biomarker of response to exposure to heavy metals in marine mussels.
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Affiliation(s)
- M Banni
- Department of Environmental and Life Science, University of Piemonte Orientale Amedeo Avogadro, Alessandria, Italy
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21
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Jebali J, Banni M, Guerbej H, Almeida EA, Bannaoui A, Boussetta H. Effects of malathion and cadmium on acetylcholinesterase activity and metallothionein levels in the fish Seriola dumerilli. Fish Physiol Biochem 2006; 32:93-98. [PMID: 20035484 DOI: 10.1007/s10695-006-0041-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2005] [Accepted: 03/05/2006] [Indexed: 05/28/2023]
Abstract
The potential use of acetylcholinesterase (AChE) and metallothionein (MT) responses as biomarker of organophosphorous (OPs) and trace metal were assessed in fish Seriola dumerilli exposed to 0, 4, 6 mg/kg of malathion for 2, 7 and 13 days, and to 0, 50, 100, 250 mug/kg of Cd for 2 days. Brain AChE was significantly inhibited after 2 and 7 days of malathion exposure, in a dose-response manner, but no inhibition was observed after 13 days of exposure. When exposed to Cd for 2 days, S. dumerelli presented an increase in AChE activity at a concentration of 50 mug/kg, but a strong and dose-dependent AChE inhibition at 100 and 250 mug/kg. Cd treatment also caused a rapid increase in MTs concentration in liver, even at the lower concentration. Our experiments indicate that the measurement of hepatic MT concentration and brain AChE activity in S. dumerilli would be useful biomarkers of OP and Cd exposure and/or effects.
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Affiliation(s)
- J Jebali
- Laboratoire de Biochimie et de Toxicologie Environnementale, Ecole Supérieure d'Horticulture et d'Elevage, Chott-Marièm, 4042, Tunisia
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