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Yang H, Zhao Z, Li H, Wang L. Metal binding feature of copper‒induced metallothionein from freshwater crab Sinopotamon henanense reveals its Cu‒thionein character. Protein Expr Purif 2024; 221:106519. [PMID: 38830441 DOI: 10.1016/j.pep.2024.106519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 05/24/2024] [Accepted: 05/30/2024] [Indexed: 06/05/2024]
Abstract
Sinopotamon Henanense expresses two metal‒induced metallothioneins (MTs), Cd‒induced MT and Cu‒induced MT (ShCuMT). The Cd‒induced MT has been characterized as a Cd‒thiolate MT. However, it is unknown whether ShCuMT is a Cu‒thiolate MT. In the present study, ShCuMT was expressed heterologously in Escherichia coli and purified by Ni‒NTA column and superdex‒75 column. And its metal‒binding feature was evaluated by DTNB reaction, circular dichroism spectroscopy (CD), isothermal microtitration (ITC), electrospray flight mass spectrometry (ESI‒TOF‒MS), and matrix‒assisted laser desorption ionization flight mass spectrometry (MALDI‒TOF‒MS). Bioinformatics analysis demonstrated that ShCuMT possessed the cysteine‒triplet motif of a Cu‒specific MT. Expression and purification of ShCuMT illustrated that SUMO tag used as the production system for ShCuMT resulted in a high production yield. The stability order of ShCuMT binding metal ions were Cu (Ⅰ) > Cd (Ⅱ) > Zn (Ⅱ). The CD spectrum indicated that ShCuMT binding with Cu (I) exhibited a compact thiol metal clusters structure. Besides, there emerged no a visible nickel‒thiol absorption after Ni‒NTA column affinity chromatography. The ITC results implied that Cu‒ShCuMT possessed the optimal thermodynamic conformation and the highest stoichiometric number of Cu (Ⅰ). Overall, the results suggested that SUMO fusion system is a robust and inexpensive approach for ShCuMT expression and Ni‒NTA column had no influence on metal binding of ShCuMT and Cu(Ⅰ) was considered its cognate metal ion, and ShCuMT possessed canonical Cu‒thiolate characteristics. The metal binding feature of ShCuMT reported here contributes to elucidating the structure‒function relationship of ShCuMT in S. Henanense.
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Affiliation(s)
- Huizhen Yang
- Shanxi Key Laboratory for Modernization of TCVM/ College of Veterinary Medicine, Shanxi Agriculture University, Jinzhong, Shanxi Province, 030800, China.
| | - Ziyan Zhao
- Shanxi Key Laboratory for Modernization of TCVM/ College of Veterinary Medicine, Shanxi Agriculture University, Jinzhong, Shanxi Province, 030800, China
| | - Hongquan Li
- Shanxi Key Laboratory for Modernization of TCVM/ College of Veterinary Medicine, Shanxi Agriculture University, Jinzhong, Shanxi Province, 030800, China.
| | - Lan Wang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China.
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2
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Pavelicova K, Do T, Vejvodova M, Vaculovic T, Nowak K, Matczuk M, Wu S, Krężel A, Adam V, Vaculovicova M. Joint forces of mass spectrometric techniques (ICP-MS and MALDI-TOF-MS) and fluorescence spectrometry in the study of platinum-based cytostatic drugs interactions with metallothionein MT2 and MT3. Talanta 2024; 274:125920. [PMID: 38574532 DOI: 10.1016/j.talanta.2024.125920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 03/09/2024] [Accepted: 03/12/2024] [Indexed: 04/06/2024]
Abstract
Herby, the interaction of metallothioneins with commonly used Pt-based anticancer drugs - cisplatin, carboplatin, and oxaliplatin - was investigated using the combined power of elemental (i.e. LA-ICP-MS, CE-ICP-MS) and molecular (i.e. MALDI-TOF-MS) analytical techniques providing not only required information about the interaction, but also the benefit of low sample consumption. The amount of Cd and Pt incorporated within the protein was determined for protein monomers and dimer/oligomers formed by non-oxidative dimerization. Moreover, fluorescence spectrometry using Zn2+-selective fluorescent indicator - FluoZin3 - was employed to monitor the ability of Pt drugs to release natively occurring Zn from the protein molecule. The investigation was carried out using two protein isoforms (i.e. MT2, MT3), and significant differences in behaviour of these two isoforms were observed. The main attention was paid to elucidating whether the protein dimerization/oligomerization may be the reason for the potential failure of the anticancer therapy based on these drugs. Based on the results, it was demonstrated that the interaction of MT2 (both monomers and dimers) interacted with Pt drugs significantly less compared to MT3 (both monomers and dimers). Also, a significant difference between monomeric and dimeric forms (both MT2 and MT3) was not observed. This may suggest that dimer formation is not the key factor leading to the inactivation of Pt drugs.
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Affiliation(s)
- Kristyna Pavelicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, CZ-61300, Brno, Czech Republic
| | - Tomas Do
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, CZ-61300, Brno, Czech Republic
| | - Marketa Vejvodova
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic
| | - Tomas Vaculovic
- Department of Chemistry, Faculty of Science, Masaryk University, Kamenice 753/5, CZ-625 00, Brno, Czech Republic; Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, SK-84215, Bratislava, Slovakia
| | - Kinga Nowak
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland
| | - Magdalena Matczuk
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland
| | - Sylwia Wu
- Department of Chemical Biology, Faculty of Biotechnology, University of Wroclaw, Joliot-Curie 14a, 50-383, Wrocław, Poland
| | - Artur Krężel
- Department of Chemical Biology, Faculty of Biotechnology, University of Wroclaw, Joliot-Curie 14a, 50-383, Wrocław, Poland
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, CZ-61300, Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1665/1, CZ-61300, Brno, Czech Republic.
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Truchet DM, Buzzi NS, Negro CL, Palavecino CC, Mora MC, Marcovecchio JE. Unraveling the depuration mechanisms of metals in the burrowing crab (Neohelice granulata Dana, 1852): Biochemical biomarkers, metal-rich granules and bioaccumulation patterns. MARINE POLLUTION BULLETIN 2023; 196:115638. [PMID: 37839132 DOI: 10.1016/j.marpolbul.2023.115638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 09/05/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023]
Abstract
We studied the depuration mechanisms of metals (Cd, Cu, Pb, Zn, Mn, Ni, Cr, Fe) in Neohelice granulata, from sites with different human impacts (PC, a more impacted site and VM, a less impacted one). Our objectives included assessing metal concentrations (essential and non-essential) before and after depuration treatment, evaluating biochemical biomarkers (non-enzymatic and enzymatic) pre and post-treatment, and determining the role of metal-rich granules (MRG) in depuration. We observed variability in metals and biomarkers post-depuration, with no significant differences observed in PC, while Cd and Mn increased and Ni, Cu, and Fe decreased in VM. Integrated biomarkers' response indicated the prevailing antioxidant capacity in depurated organisms. Lipid peroxidation changes were insignificant, except in depurated-VM where values increased. MRG showed a significant decrease only for Mn and Fe, suggesting they were not the primary depuration structure. We concluded that depuration might depend on the species, gender and contamination history.
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Affiliation(s)
- D M Truchet
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB Bahía Blanca, Buenos Aires, Argentina; Grupo de Ecotoxicología, Instituto de Investigaciones Marinas y Costeras (IIMyC, CONICET), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata (UNMdP). Dean Funes 3350, B7602AYL Mar del Plata, Argentina.
| | - N S Buzzi
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB Bahía Blanca, Buenos Aires, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, B8000ICN Bahía Blanca, Buenos Aires, Argentina
| | - C L Negro
- Escuela Superior de Sanidad, Facultad de Ciencias Biológicas y Bioquímicas, Universidad Nacional del Litoral (ESS, FBCB-UNL), Paraje el Pozo s/n, CP 3000 Ciudad de Santa Fe, Santa Fe, Argentina; Instituto Nacional de Limnología (INALI, CONICET-UNL), Paraje el Pozo s/n, CP 3000 Ciudad de Santa Fe, Santa Fe, Argentina
| | - C C Palavecino
- Laboratorio de Ecología de Enfermedades, Instituto de Ciencias Veterinarias del Litoral (ICIVET, CONICET-UNL), R.P. Kreder 2805, Esperanza, Santa Fe, Argentina
| | - M C Mora
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Paraje el Pozo s/n, CP 3000 Ciudad de Santa Fe, Santa Fe, Argentina
| | - J E Marcovecchio
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB Bahía Blanca, Buenos Aires, Argentina; Universidad Tecnológica Nacional (UTN- FRBB), 11 de abril 461, B8000LMI Bahía Blanca, Buenos Aires, Argentina
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Truchet DM, Negro CL, Buzzi NS, Mora MC, Marcovecchio JE. Assessment of metal contamination in an urbanized estuary (Atlantic Ocean) using crabs as biomonitors: A multiple biomarker approach. CHEMOSPHERE 2023; 312:137317. [PMID: 36410521 DOI: 10.1016/j.chemosphere.2022.137317] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/06/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Estuarine environments, which are complex and sensitive coastal system, and are the final receptacle of several human wastes. Consequently, biomonitoring contaminants, such as metals, within these environments and developing scientific-based tools to conserve them have become particularly importat in recent years. Therefore, in the present study, we determined the levels of certain metals (Cd, Cu, Pb, Zn, Mn, Ni, Cr and Fe) both in sediments and in a key ecological benthic species, the burrowing crab Neohelice granulata, in sites of the Bahía Blanca estuary (SW Atlantic Ocean) with different anthropogenic impacts. We combined these records with geochemical indices and enzymatic and non-enzymatic biochemical biomarkers as early warning signals of contamination and damage to establish an integrated metal contamination profile. Our results indicated that some metals like Cu moderately contaminate the estuary and that the primary input of metals in this area is due to malfunctioning sewage discharges. Crabs exhibited the following pattern of metal accumulation: Fe ≥ Cu > Zn > Mn > Ni > Cd. Pb and Cr were under the method detection limit, and Cu was probably bioaccumulated from sediments. Metal concentrations showed significant differences according to the sites and seasons (p > 0.05) and not strictly to the crab gender. Besides, a similar pattern was observed for biomarkers, and the integrated biomarker response allowed establishing different oxidative stress patterns, according not only to human impacts but also to the seasonal physiological needs of this species and environmental endpoints (salinity, temperature, and pH). This work demonstrates that environmental factors also affect the metal influx in crabs and the activity of biomarkers beyond the source and fate of these elements. This information is vital for future integrated monitoring programs.
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Affiliation(s)
- D M Truchet
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, Km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina.
| | - C L Negro
- Escuela Superior de Sanidad, Facultad de Ciencias Biológicas y Bioquímicas, Universidad Nacional Del Litoral (ESS, FCBC-UNL), Paraje El Pozo S/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina; Instituto Nacional de Limnología (INALI CONICET-UNL), Paraje El Pozo S/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina
| | - N S Buzzi
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, Km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional Del Sur (UNS), San Juan 670, B8000ICN, Bahía Blanca, Buenos Aires, Argentina
| | - M C Mora
- Instituto Nacional de Limnología (INALI CONICET-UNL), Paraje El Pozo S/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina
| | - J E Marcovecchio
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT- CONICET, Camino La Carrindanga, Km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina; Universidad Tecnológica Nacional (UTN-FRBB), 11 de Abril 461, B8000LMI, Bahía Blanca, Buenos Aires, Argentina; Universidad FASTA, Gascón, 3145, B7600FNK, Mar Del Plata, Buenos Aires, Argentina
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5
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Wang L, Yang HZ, Ma WL, Chen CM, Wang L. Study on metal binding capacity of the freshwater crab Sinopotamon henanense's recombinant copper specific binding metallothionein expressed in Escherichia coli. ECOTOXICOLOGY (LONDON, ENGLAND) 2022; 31:149-160. [PMID: 34751855 DOI: 10.1007/s10646-021-02470-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/17/2021] [Indexed: 06/13/2023]
Abstract
The copper specific binding metallothionein (CuMT) is a type of cysteine-rich, metal-binding, small protein which plays an important role in Cu2+ metabolism in vertebrates. In this study, we investigated the metal tolerance and removing ability of recombinant strains harboring CuMT obtained in vivo from the freshwater crab Sinopotamon henanense (ShCuMT) in order to study its physiological functions and metal binding capacity. We performed a 3D modeling of ShCuMT and created its structural and functional models using the I-TASSER program. The shCumt gene was inserted into a pGEX-4t-1 vector and recombinant soluble ShCuMT was expressed in Escherichia coli. In addition, in order to characterize the tolerance and removing ability of heavy metals in E. coli with ShCuMT expression, the recombinant strains harboring ShCuMT were exposed to various concentrations of Cd2+, Cu2+ and Zn2+, respectively. The results showed that ShCuMT contains transition metal binding sites. In addition, E. coli cells expressing ShCuMT exhibited enhanced metal tolerance and higher removing ability of metal ions than control cells. However, compared with Cd2+ and Zn2+, E. coli cells expressing ShCuMT have stronger tolerance and higher removing ability of Cu2+. In general, ShCuMT contains multiple transition metal binding sites, and it could enhance tolerance and removing ability of metal ions. Therefore, ShCuMT can provide potential candidates for heavy metal bioremediation. This research on the metal binding properties of ShCuMT provides a scientific basis for bioremediation of heavy metal pollution by the recombinant strains.
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Affiliation(s)
- Lu Wang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Hui Zhen Yang
- College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong, Shanxi Province, 030600, China
| | - Wen Li Ma
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Chien Min Chen
- Department of Environmental Resources Management, Chia Nan University of Pharmacy & Science, Tainan City, Taiwan
| | - Lan Wang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China.
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Truchet DM, Buzzi NS, Negro CL, Mora MC, Marcovecchio JE. Integrative assessment of the ecological risk of heavy metals in a South American estuary under human pressures. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111498. [PMID: 33091768 DOI: 10.1016/j.ecoenv.2020.111498] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 05/12/2023]
Abstract
Biomonitoring of heavy metal pollution through the use of biomarkers could be a difficult task since the organisms' physiological changes could shift regarding natural factors (i.e., the season of the year) and due to the anthropogenic pressures of the environment. In the Southwest Atlantic Ocean, where most industrial and developing countries are settled, it is essential to address these concerns to generate information for the stakeholders and monitoring programs that aim to use biochemical biomarkers as early warning signals to detect heavy metal pollution. The present study intended to determinate the heavy metal concentrations in sediments and the hepatopancreas of the crab species Neohelice granulata as well as the ecological risk through the use of biomarkers and geochemical indices in sites with different anthropogenic pressures of the Bahía Blanca estuary (SW Atlantic Ocean) during the warm and cold season. The results showed low to moderate heavy metal pollution in the sediments by Cu with possible effects on the biota in a site with sewage waters' discharges. Except for GST that was explained by Cd, the biomarkers employed were not useful to assess spatial heavy metal pollution, and they might be ruled out by physiological seasonal variations rather than anthropogenic constraints, or another type of pollutants in the area.
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Affiliation(s)
- Daniela M Truchet
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT, CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, B8000ICN, Bahía Blanca, Buenos Aires, Argentina
| | - Natalia S Buzzi
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT, CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, B8000ICN, Bahía Blanca, Buenos Aires, Argentina
| | - C Leandro Negro
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Paraje el Pozo s/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina; Escuela Superior de Sanidad, Facultad de Ciencias Biológicas y Bioquímicas, Universidad Nacional del Litoral (ESS, FCBC-UNL), Paraje el Pozo s/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina
| | - M Celeste Mora
- Instituto Nacional de Limnología (INALI, CONICET-UNL), Paraje el Pozo s/n, CP 3000, Ciudad de Santa Fe, Santa Fe, Argentina
| | - Jorge E Marcovecchio
- Área de Oceanografía Química. Instituto Argentino de Oceanografía (IADO), CCT, CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina; Universidad Tecnológica Nacional (UTN, FRBB), 11 de abril 461, B8000LMI, Bahía Blanca, Buenos Aires, Argentina; Universidad FASTA, Gascón 3145, B7600FNK, Mar del Plata, Buenos Aires, Argentina
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Truchet DM, Buzzi NS, Simonetti P, Marcovecchio JE. Uptake and detoxification of trace metals in estuarine crabs: insights into the role of metallothioneins. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:31905-31917. [PMID: 32504443 DOI: 10.1007/s11356-020-09335-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
The detoxification process of trace metals in the estuarine burrowing crab Neohelice granulata, after previously being exposed to anthropogenic pressures in the field, is described for the first time. The objectives of this study were (a) to assess the metal content (Cd, Cu, Pb, Zn, Mn, Ni, Cr, Fe) in the sediments and the uptake of these elements in the hepatopancreas of N. granulata; (b) to quantify trace metal concentrations in the hepatopancreas before and after the detoxification experiment; and (c) to relate this information to metallothionein (MT) induction or reversibility. The detoxification assay was performed for 25 days with artificial seawater under controlled conditions in a culture chamber. The results showed higher uptake and bioaccumulation of Zn and Cu from the sediments, and the hepatopancreas exhibited increased levels of Zn and lower concentrations of the rest of the metals and MTs after the assay, mainly Fe and Mn that were significantly lower. We conclude that trace metals could be translocated to and accumulated in the hepatopancreas, the main metabolic organ, and then eliminated under controlled conditions with corresponding reversibility of MTs. Graphical abstract.
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Affiliation(s)
- Daniela María Truchet
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT-CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina.
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, B8000ICN, Bahía Blanca, Buenos Aires, Argentina.
| | - Natalia Sol Buzzi
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT-CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina
- Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur (UNS), San Juan 670, B8000ICN, Bahía Blanca, Buenos Aires, Argentina
| | - Pía Simonetti
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT-CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina
| | - Jorge Eduardo Marcovecchio
- Área de Oceanografía Química, Instituto Argentino de Oceanografía (IADO), CCT-CONICET, Camino La Carrindanga, km 7.5, Edificio E1, B8000FWB, Bahía Blanca, Buenos Aires, Argentina
- Universidad Tecnológica Nacional (UTN-FRBB), 11 de abril 461, B8000LMI, Bahía Blanca, Buenos Aires, Argentina
- Universidad FASTA, Gascón 3145, B7600FNK, Mar del Plata, Buenos Aires, Argentina
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Yang HZ, Wang L, He YJ, Jing WX, Ma WL, Chen CM, Wang L. Analysis of spectrometry and thermodynamics of the metallothionein in freshwater crab Sinopotamon henanense for its binding ability with different metals. CHEMOSPHERE 2020; 246:125670. [PMID: 31918077 DOI: 10.1016/j.chemosphere.2019.125670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
The metal binding nature of heterologously expressed metallothionein of Sinopotamon henanense (ShMT) had been demonstrated previously. In this study, we analysed the stoichiometry of ShMT yielded in vivo and exchange reactions of the Zn-ShMT with Cd2+, Pb2+ and Cu2+in vitro via electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS), circular dichroism (CD) spectroscopy, inductively coupled plasma mass spectrometry (ICP-MS), and isothermal titration calorimetry (ITC). The results of ESI-TOF-MS analyses showed that metal-ShMT synthesized in vivo had three major forms, namely Zn15-, Cd9-, and Pb5-ShMT. The ITC analyses of exchange reactions demonstrated that Zn-ShMT exhibited up to 6, 6, and 7 binding sites for Cd2+, Pb2+ and Cu2+. By the analyses of the UV and CD spectra in the substitution experiments showed that the geometric structural stability of metal-ShMT could be influenced when excess of over 6, 6, or 7 equivalents of Cd2+, Pb2+, or Cu2+ were added into Zn-ShMT. Although both the reconstructed apo-ShMT and substituted Zn-ShMT with three metal ions fitted the same M6Ⅱ- and M7Ⅰ-ShMT binding models for divalent and monovalent metals, the differences in their thermodynamic data suggested that discrepancies exit in their physiological functions. These results suggested that ShMT yielded in vivo had a higher storage capability for Zn2+ and a uptake ability for Cd2+, and Zn-ShMT was more easy to release Zn2+ as well as to uptake Cd2+, Cu2+, or Pb2+. The results presented in this work will be very valuable to understand the function(s) of ShMT not only in a normal physiological condition but also in the presence of non-essential metals in crabs.
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Affiliation(s)
- Hui Zhen Yang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Lu Wang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Yong J He
- Agricultural Processing Institution, Shanxi Academy of Agricultural Sciences, Shanxi Province, China
| | - Wei X Jing
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Wen L Ma
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China
| | - Chien M Chen
- Department of Environmental Resources Management, Chia Nan University of Pharmacy & Science, Taiwan.
| | - Lan Wang
- School of Life Science, Shanxi University, Taiyuan, Shanxi Province, 030006, China.
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Yang J, Sun H, Zhang H, Zhou H. Expression, purification of metallothionein genes from freshwater crab (Sinopotamon yangtsekiense) and development of an anti-metallothionein ELISA. PLoS One 2017; 12:e0174482. [PMID: 28350826 PMCID: PMC5370132 DOI: 10.1371/journal.pone.0174482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 03/09/2017] [Indexed: 02/06/2023] Open
Abstract
Using the phoA-fusion technology, the recombinant metallothionein (MT) from freshwater crab (Sinopotamon yangtsekiense) has been successfully produced in Escherichia coli. MT purified from the bacterial suspension showed one polypeptide with a molecular weight of 7 kDa by tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis (Tricine-SDS-PAGE). Western-blotting confirmed the polypeptides had a specific reactivity with mouse polyclonal MT anti-serum. Based on the purified MT and MT anti-serum, the reaction parameters for an enzyme-linked immunosorbent assay (ELISA) were developed. The direct coating ELISA showed a higher linear relationship compared to antibody sandwich coating ELISA. The optimal dilution rates of purified MT anti-serum and coating period were shown to be 1:160,000 and 12 hours at 4°C. At 37°C, the appropriate reaction duration of the first antibody and the second antibody were 2 hours and 1 hour, respectively. According to these optimal parameters, the standard linear equation, y = 0.0032x + 0.1769 (R2 = 0.9779, x, y representing MT concentration and OD450 value), was established for the determination of MT concentration with a valid range of 3.9–500 ng/ml. In verification experiments, the mean coefficients of variation of the intra-assay and inter-assay were 3.260% and 3.736%, respectively. According to the result of MT recovery, ELISA with an approaching 100% MT recovery was more reliable and sensitive than the Cd saturation assay. In conclusion, the newly developed ELISA of this study was precise, stable and repeatable, and could be used as a biomarker tool to monitor pollution by heavy metals.
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Affiliation(s)
- Jian Yang
- Translational Medicine Research Center, Shanxi Medical University, Taiyuan, Shanxi Province, People’s Republic of China
- * E-mail:
| | - Hui Sun
- Institute of Science & Technology of Shanxi, Taiyuan, Shanxi Province, People’s Republic of China
| | - Hao Zhang
- Translational Medicine Research Center, Shanxi Medical University, Taiyuan, Shanxi Province, People’s Republic of China
| | - Hui Zhou
- Translational Medicine Research Center, Shanxi Medical University, Taiyuan, Shanxi Province, People’s Republic of China
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Buzzi NS, Marcovecchio JE. A baseline study of the metallothioneins induction and its reversibility in Neohelice granulata from the Bahía Blanca Estuary (Argentina). MARINE POLLUTION BULLETIN 2016; 112:452-458. [PMID: 27439626 DOI: 10.1016/j.marpolbul.2016.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 07/04/2016] [Accepted: 07/06/2016] [Indexed: 06/06/2023]
Abstract
Contamination by heavy metals causes serious effects in marine systems. Nowadays, the combination of chemical and biological data is recommended in monitoring programs. Metallothioneins (MT) are early-warning signals of metal exposure and are widely used in biomonitoring. The present research evaluates the heavy metals levels in sediments and the MT synthesis in the crab Neohelice granulata from the Bahía Blanca Estuary (BBE). Then, the recovery capabilities of N. granulata followed by a depuration phase are assessed. Results demonstrate a slow decline in the level of metals in the study area. In relation to MT, female crabs showed elevated MT when compared to males. Furthermore, MT synthesis diminished after the depuration phase. These data constitute the first MT information in organisms from the BBE and may be considered as baseline for future studies in this matter. Although pollution level found was low, further biomonitoring considering both types of data is recommended.
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Affiliation(s)
- N S Buzzi
- Instituto Argentino de Oceanografía (IADO - CONICET-CCT Bahía Blanca), Camino La Carrindanga Km7, Edificio E1, C.C. 804, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, 8000 Bahía Blanca, Argentina.
| | - J E Marcovecchio
- Instituto Argentino de Oceanografía (IADO - CONICET-CCT Bahía Blanca), Camino La Carrindanga Km7, Edificio E1, C.C. 804, 8000 Bahía Blanca, Argentina; Universidad Tecnológica Nacional - FRBB, 11 de Abril 445, 8000 Bahía Blanca, Argentina; Universidad FASTA, Gascón 3151, 7600 Mar del Plata, Argentina.
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Scudiero R, Tussellino M, Carotenuto R. Identification and expression of an atypical isoform of metallothionein in the African clawed frog Xenopus laevis. C R Biol 2015; 338:314-20. [PMID: 25882350 DOI: 10.1016/j.crvi.2015.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 11/18/2022]
Abstract
Exploiting the annotation of the western clawed frog Silurana tropicalis genome, we identified a new metallothionein (MT) gene, exhibiting all the features to be considered an active gene, but with an atypical coding region, showing only 17 cysteine residues instead of the canonical 20 cysteines of vertebrate metallothioneins and two anomalous cysteine triplets. However, the presence of a gene in the genome does not ensure its effective expression. By using conventional and Real-Time PCR analyses, we demonstrated that this atypical MT is constitutively expressed throughout the life cycle of the African clawed frog Xenopus laevis; moreover, this gene is highly expressed in the adult liver, the major site of MT expression and synthesis in vertebrates. To our knowledge, the X. laevis MT described in this paper is the first sequence of a vertebrate MT showing only 17 cysteine residues, arranged in two Cys-Cys-Cys motifs. Phylogenetic analyses also demonstrated that the atypical X. laevis MT merges in the anuran clade, but is the most derived sequence among tetrapods MTs. Finally, Tajima's Relative Rate Test suggested a different evolutionary rate between the canonical X. laevis MT and this novel isoform.
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Affiliation(s)
- Rosaria Scudiero
- Dipartimento di Biologia, Università Federico II, via Mezzocannone 8, 80134 Napoli, Italy.
| | - Margherita Tussellino
- Dipartimento di Biologia, Università Federico II, via Mezzocannone 8, 80134 Napoli, Italy
| | - Rosa Carotenuto
- Dipartimento di Biologia, Università Federico II, via Mezzocannone 8, 80134 Napoli, Italy
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Zhang J, Wang J, Gui T, Sun Z, Xiang J. A copper-induced metallothionein gene from Exopalaemon carinicauda and its response to heavy metal ions. Int J Biol Macromol 2014; 70:246-50. [PMID: 24971556 DOI: 10.1016/j.ijbiomac.2014.06.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 05/21/2014] [Accepted: 06/07/2014] [Indexed: 11/16/2022]
Abstract
A full-length copper-induced metallothionein (EcMT-Cu) cDNA was obtained from Exopalaemon carinicauda (Holthuis) and it contained a 198 bp open reading frame that encoded a peptide with 65 amino acid residues. Twenty-one cysteines were found in deduced amino acid sequence and the cysteine (Cys)-rich characteristic was also reported in different types of metallothioneins from other species. EcMT-Cu mRNA expression profile showed that it is the hepatopancreas specific gene. The expression of EcMT-Cu was extremely different when shrimp were exposed to seawater containing 50 μM CuSO4 or 2.5 μM CdCl2. The expression of EcMT-Cu in shrimp was significantly up-regulated at 12 and 24 h after exposure to CuSO4, however, its expression was not induced compared to that of pretreatment (p>0.05) when shrimp were exposed to CdCl2. The transcript of EcMT-Cu was found to be extremely low at gastrula and nauplius stage and expression of EcMT-Cu could be detected from egg protozoa stage.
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Affiliation(s)
- Jiquan Zhang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
| | - Jing Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100039 China
| | - Tianshu Gui
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100039 China
| | - Zheng Sun
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Jianhai Xiang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
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Pedersen KL, Bach LT, Bjerregaard P. Amount and metal composition of midgut gland metallothionein in shore crabs (Carcinus maenas) after exposure to cadmium in the food. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 150:182-188. [PMID: 24685622 DOI: 10.1016/j.aquatox.2014.03.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/07/2014] [Accepted: 03/07/2014] [Indexed: 06/03/2023]
Abstract
Accumulation of cadmium in aquatic invertebrates may compromise human food safety and anthropogenic additions of cadmium to coastal areas cause concern. Induction of crustacean metallothionein has been suggested as a useful biomarker for contamination of the aquatic environment with cadmium. We investigated how exposure to low concentrations of cadmium in the food affects the subcellular binding of cadmium with the shore crab Carcinus maenas as model organism. Approximately 80% of the assimilated cadmium was bound in the soluble fraction of the midgut gland and of this, 82% was found in the metallothionein fraction. Metallothionein synthesis was only induced at the highest exposure level. However, the number of cadmium atoms bound per molecule of metallothionein increased linearly with exposure, from approximately 0.18 in the control group to 1.4 in a group administered food containing 5.1 μg Cd g(-1). We noted a marked interaction between the presence of copper and zinc in the midgut gland and the binding of cadmium. The usefulness of crustacean midgut gland metallothionein as a biomarker for cadmium exposure at modest levels was questioned since exposures at levels producing significant increases in the tissue contents of the metal did not result in elevated concentrations of metallothionein in the midgut gland.
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Affiliation(s)
- Knud Ladegaard Pedersen
- Department of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Louise Thornhøj Bach
- Department of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark
| | - Poul Bjerregaard
- Department of Biology, University of Southern Denmark, Campusvej 55, DK-5230 Odense, Denmark.
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Isani G, Carpenè E. Metallothioneins, unconventional proteins from unconventional animals: a long journey from nematodes to mammals. Biomolecules 2014; 4:435-57. [PMID: 24970224 PMCID: PMC4101491 DOI: 10.3390/biom4020435] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 03/19/2014] [Accepted: 03/21/2014] [Indexed: 12/19/2022] Open
Abstract
Metallothioneins (MTs) are ubiquitous low molecular weight cysteine-rich proteins characterized by high affinity for d10 electron configuration metals, including essential (Zn and Cu) and non-essential (Cd and Hg) trace elements. The biological role of these ancient and well-conserved multifunctional proteins has been debated since MTs were first discovered in 1957. Their main hypothesized functions are: (1) homeostasis of Zn and Cu; (2) detoxification of Cd, and Hg; and (3) free radical scavenging. This review will focus on MTs in unconventional animals, those not traditionally studied in veterinary medicine but of increasing interest in this field of research. Living in different environments, these animals represent an incredible source of physiological and biochemical adaptations still partly unexplored. The study of metal-MT interactions is of great interest for clinicians and researchers working in veterinary medicine, food quality and endangered species conservation.
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Affiliation(s)
- Gloria Isani
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, via Tolara di sopra, 50, Ozzano Emilia, Bologna 40064, Italy.
| | - Emilio Carpenè
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, via Tolara di sopra, 50, Ozzano Emilia, Bologna 40064, Italy.
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Ma W, He Y, Yan T, Wang L. Tissue-specific copper accumulation, zinc levels, induction, and purification of metallothionein in freshwater crab Sinopotamon henanense exposed to subacute waterborne copper. ENVIRONMENTAL TOXICOLOGY 2014; 29:407-417. [PMID: 22422559 DOI: 10.1002/tox.21767] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 01/15/2012] [Accepted: 01/21/2012] [Indexed: 05/31/2023]
Abstract
Copper (Cu) is one of the most important essential metals for crustaceans, buttoxic in excess. Metallothioneins (MT) are a family of low molecular weight, cysteine-rich, metal-binding proteins, which play important roles in metal homeostasis, detoxification, and cytoprotection. In the present study, Sinopotamon henanense were exposed to 0 (controls), 2.86, and 14.3 mg L(-1) waterborne Cu, Cu accumulation, zinc (Zn) levels and MT induction in gills and hepatopancreas were determined with Cd/Hemoglobin saturation assay and atomic absorption spectrophotometry method. Results showed that Cu accumulation and MT levels were both tissue-specific and revealed some time-dependent and dose-dependent, respectively. The highest Cu accumulations of 82.10 ± 16.38 μg g(-1) w wt were observed in the gill after 15 days of 14.3 mg L(-1) Cu exposure, the peak MT induction of 136.16 ± 19.39 μg g(-1) w wt were observed in the hepatopancreas after 3 day of 14.3 mg L(-1) Cu exposure.In addition, the essential metal homeostasis of Zn was disturbed in some ways by subacute Cu exposure. The calculated ratios of actual Cu to theoretical maximum metal bound by MT indicating that the hepatopancreas had much greater Cu-binding potentials than the gills. Positive correlation were shown between MT induction and Cu accumulation both in hepatopancreas and gills, indicating that MT induction in S. henanense can be considered as a biomarker for subacute waterborne Cu pollution. Furthermore, the Cu induced MT (CuMT) from S. henanense was purified using acetone precipitation (50-80%), followed by gel filtration chromatography and anion exchange chromatography. SDS-PAGE and time-of-flight mass spectrometry analysis showed that S. henanense CuMT possess two isoforms and both mainly existed as monomer and dimmer forms. These present studies will be helpful to increase the database information of heavy metal-induced MT in terms of crustaceans.
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Affiliation(s)
- Wenli Ma
- School of Life Science, Shanxi University, Taiyuan 030006, People's Republic of China
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Zaytsev DV, Morozov VA, Fan J, Zhu X, Mukherjee M, Ni S, Kennedy MA, Ogawa MY. Metal-binding properties and structural characterization of a self-assembled coiled coil: Formation of a polynuclear Cd–thiolate cluster. J Inorg Biochem 2013; 119:1-9. [DOI: 10.1016/j.jinorgbio.2012.10.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 10/22/2012] [Accepted: 10/23/2012] [Indexed: 01/10/2023]
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Babczyńska A, Wilczek G, Szulińska E, Franiel I. Quantitative immunodetection of metallothioneins in relation to metals concentration in spiders from variously polluted areas. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2011; 74:1498-1503. [PMID: 21676461 DOI: 10.1016/j.ecoenv.2011.05.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 05/26/2011] [Accepted: 05/27/2011] [Indexed: 05/30/2023]
Abstract
Spiders inhabiting post industrial environments, such as waste heaps or ore-bearing areas, are exposed to high concentrations of metals, accumulated in the body of their prey and transferred along food chains. Therefore spiders are pressed to develop metal-neutralization strategies. Low-molecular, multifunction proteins: metallothioneins (MTs), often postulated as biomarkers of metal exposure, are known to bind metals and thus protect organisms against their toxic effects. Yet the proteins are still not well recognized in spiders. The aim of this study was to assess, by immunodetection method, ELISA, the concentration of metallothioneins in adult females of three web building spider species: Araneus diadematus (Araneidae), Agelena labyrinthica (Agelenidae) and Linyphia triangularis (Linyphiidae) from three variously polluted areas in southern Poland: Olkusz, ore-bearing post industrial site; Katowice-WeŁnowiec: post metallurgic waste heap, Pilica: the reference, rural, area. The concentration of metallothioneins has been analyzed in relation to the metal concentration in spiders body. The study gives the evidence that metallothioneins are reliably detectable by means of ELISA technique. The analysis of results obtained shows a strong species-dependence of the MTs level. Positive correlations between MTs concentration and metal body burden (mainly Zn and Pb) were found. This suggests that the proteins play an important role in the neutralization and regulation of metal ions in spiders. The same correlation indicate the possibility to consider MTs in spiders as biomarkers of metal exposure and effects. However, the species specificity as well as metal characteristics should be taken under account.
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Affiliation(s)
- Agnieszka Babczyńska
- Department of Animal Physiology and Ecotoxicology, University of Silesia, Bankowa 9, 40-007 Katowice, Poland.
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