The Marine Mollusc Turbo radiatus Glutathione S-Transferase Isolation and Biochemical Characterization: Antibacterial Effect and Cytotoxicity Against Different Cancer Cell Lines

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Masoud H.M.; Helmy M.S.; Hamed A.A.; El-Karim R.M.G.; Ali R.E.M.; Zayed K.M.; Habib M.R.

Journal: Egyptian Journal of Aquatic Biology and Fisheries

Publisher: Egyptian Society for the Development of Fisheries and Human Health

Publication Date: 1 November 2024

Volume / Issue: Volume 28 / Issue 6

Pages: 1239–1258

ISSN: 11106131

DOI: 10.21608/ejabf.2024.396336

Scopus: View on Scopus

Document Type: Article

Access: All Open Access; Gold Open Access

Authors and Affiliations

Masoud H.M., Molecular Biology Dept, National Research Center, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt, Proteome Research Lab, Central Laboratories Network and Centers of Excellence, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt; Helmy M.S., Molecular Biology Dept, National Research Center, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt, Proteome Research Lab, Central Laboratories Network and Centers of Excellence, National Research Centre, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt; Hamed A.A., Microbial Chemistry Dept, National Research Center, 33 El-Buhouth St., Dokki, Giza, 12622, Egypt; El-Karim R.M.G., Medical Malacology Dept, Theodor Bilharz Research Institute, 1 Corniche El Nile St., Warrak El-Haddar, Imbaba, Giza, 12411, Egypt; Ali R.E.M., Medical Malacology Dept, Theodor Bilharz Research Institute, 1 Corniche El Nile St., Warrak El-Haddar, Imbaba, Giza, 12411, Egypt; Zayed K.M., Medical Malacology Dept, Theodor Bilharz Research Institute, 1 Corniche El Nile St., Warrak El-Haddar, Imbaba, Giza, 12411, Egypt; Habib M.R., Medical Malacology Dept, Theodor Bilharz Research Institute, 1 Corniche El Nile St., Warrak El-Haddar, Imbaba, Giza, 12411, Egypt

Abstract

Glutathione S-transferases (GSTs) in aquatic organisms are extensively utilized as biomarkers for monitoring environmental contamination due to their ability to detoxify numerous pollutants. In this study, a GST enzyme from marine snails Turbo radiatus (TrGST) was purified through successive chromatographic separations on DEAE-cellulose, Sephacryl S-300, and glutathione-sepharose columns. TrGST was purified with 181.7-folds, 47.4% recovery and a specific activity of 194.4 Umg-1. Molecular weight of TrGST, as determined by gel filtration, was 47 kDa. The SDS-PAGE analysis revealed TrGST as a single band of 23.4 kDa, indicating a homodimer protein of two identical subunits. The isoelectric point (pI) of TrGST was located at pH 6.1. The purified TrGST had Km values of 1.67 and 0.55 mM for CDNB and GSH with corresponding Vmax values of 0.72 and 0.4U/ mg, respectively. TrGST exhibited maximal activity at pH 8.4. The ions Co2+ and Mg2+ increased TrGST activity, while Mn2+, Cu2+, and Fe2+ suppressed it. TrGST was strongly inhibited by quercetin, lithocholic acid, cumene hydroperoxide, hematin, and triphenyltin chloride, with triphenyltin chloride being the most potent inhibitor showing noncompetitive inhibition with a Ki value of 0.125µM. TrGST revealed significant inhibition against certain bacterial strains; however, no inhibition was observed against others, indicating selective antimicrobial effects. TrGST exhibited strong cytotoxic effects against prostate cancer (PC3) and hepatocellular carcinoma (HepG2) cell lines, while showing weak activity against the colon cell line HCT116 and no effect on lung carcinoma cells (A549). The obtained results indicated that the TrGST protein may have the potential to serve as a tool for developing antibacterial and anti-cancer drugs in the future. © 2024, Egyptian Society for the Development of Fisheries and Human Health. All rights reserved.

Keywords

Characterization; Cytotoxicity; Glutathione-S-transferase; Marine snails; Purification; Turbo radiatus

Citation Information

Scopus Citations: 4

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