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Saad MH, El-Fakharany EM, Salem MS, Sidkey NM. In vitro assessment of dual (antiviral and antitumor) activity of a novel lectin produced by the newly cyanobacterium isolate, Oscillatoria acuminate MHM-632 MK014210.1. J Biomol Struct Dyn 2020; 40:3560-3580. [PMID: 33200676 DOI: 10.1080/07391102.2020.1848632] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A novel lectin was purified from newly cyanobacterium isolate, Oscillatoria acuminate MHM-632 MK014210.1 using affinity chromatography with a molecular weight of 120 kDa under native-PAGE and 30 kDa on reducing-PAGE, represented tetramer nature of this lectin. Oscillatorial lectin showed stability at 60 °C for 30 min, pH-dependent, with the highest activities over the pH range of 6-8, and required zinc ions to express its full activity. Oscillatorial lectin is a glycan-binding protein with a neutral carbohydrate content of 7.0% as evaluated by the phenol-sulfuric acid method. Polyols and α- glycosides polymer of mannose sugar or sugars alcohol were completely inhibited oscillatorial lectin with MIC of 0.195 mM, while β-glycosides sugars did not show any inhibition effect. The oscillatorial lectin has anti-proliferative activity against Huh-7 and MCF-7 cancer cells and inhibited their proliferation with EC50 values of 106.75 µg/ml and 254.14 µg/ml, respectively. Besides the anticancer effect, oscillatorial lectin also has potent antiviral activity against HSV-1 in a dose-dependent manner via virions neutralization and inhibition of viral replication with IC50 values of 90.95 ng/ml and 131.3 ng/ml, respectively. The unique carbohydrate affinity of oscillatorial lectin provides insight into its use as a promising candidate in many biotechnological applications, like fighting viral infection and combating cancer disease.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mabroka H Saad
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt.,Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
| | - Esmail M El-Fakharany
- Protein Research Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), Alexandria, Egypt
| | - Marwa S Salem
- Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
| | - Nagwa M Sidkey
- Botany & Microbiology Department, Faculty of Science, Al Azhar University (Girls Branch), Nasr City, Egypt
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Barre A, Bourne Y, Van Damme EJM, Rougé P. Overview of the Structure⁻Function Relationships of Mannose-Specific Lectins from Plants, Algae and Fungi. Int J Mol Sci 2019; 20:E254. [PMID: 30634645 PMCID: PMC6359319 DOI: 10.3390/ijms20020254] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 12/29/2018] [Accepted: 12/31/2018] [Indexed: 01/05/2023] Open
Abstract
To date, a number of mannose-binding lectins have been isolated and characterized from plants and fungi. These proteins are composed of different structural scaffold structures which harbor a single or multiple carbohydrate-binding sites involved in the specific recognition of mannose-containing glycans. Generally, the mannose-binding site consists of a small, central, carbohydrate-binding pocket responsible for the "broad sugar-binding specificity" toward a single mannose molecule, surrounded by a more extended binding area responsible for the specific recognition of larger mannose-containing N-glycan chains. Accordingly, the mannose-binding specificity of the so-called mannose-binding lectins towards complex mannose-containing N-glycans depends largely on the topography of their mannose-binding site(s). This structure⁻function relationship introduces a high degree of specificity in the apparently homogeneous group of mannose-binding lectins, with respect to the specific recognition of high-mannose and complex N-glycans. Because of the high specificity towards mannose these lectins are valuable tools for deciphering and characterizing the complex mannose-containing glycans that decorate both normal and transformed cells, e.g., the altered high-mannose N-glycans that often occur at the surface of various cancer cells.
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Affiliation(s)
- Annick Barre
- UMR 152 PharmaDev, Institut de Recherche et Développement, Faculté de Pharmacie, Université Paul Sabatier, 35 Chemin des Maraîchers, 31062 Toulouse, France.
| | - Yves Bourne
- Centre National de la Recherche Scientifique, Aix-Marseille Univ, Architecture et Fonction des Macromolécules Biologiques, 163 Avenue de Luminy, 13288 Marseille, France.
| | - Els J M Van Damme
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium.
| | - Pierre Rougé
- UMR 152 PharmaDev, Institut de Recherche et Développement, Faculté de Pharmacie, Université Paul Sabatier, 35 Chemin des Maraîchers, 31062 Toulouse, France.
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Hong J, Chen TT, Hu L, Yang J, Hu P, Wang SY. Purification and characterization of a novel lectin from Chinese leek seeds. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:1488-1495. [PMID: 25569192 DOI: 10.1021/jf5046014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel lectin, CLSL, was purified from Chinese leek seeds by ion exchange chromatography on SP Sephadex C-25 and gel filtration chromatography on Sephadex G50. The lectin had a molecular weight of 23.6 kDa and was composed of two identical subunits linked by disulfide bonds, a conclusion based on SDS-PAGE under reducing and nonreducing conditions. CLSL was a glycoprotein with a carbohydrate content of 3.6%. It exerted potent agglutinating activity against rat red blood cells at a concentration of 8.9 μg/mL. Hemagglutination of rat erythrocytes was inhibited by d-fructose, mannitol, and sorbose at the concentration of 20 mM. The hemagglutinating activity of CLSL was maintained at 100 °C for 60 min and under acidic pH conditions but was lost at neutral and alkaline pH conditions. The hemagglutinating activity was stimulated by Ca(2+), Fe(2+), and Cu(2+) but inactivated by Ba(2+) at a concentration of 10 mM. Ba(2+)-mediated inactivation of CLSL was caused by CLSL conformational change induced by barium ions, according to the results of circular dichroism and fluorescence spectroscopy. Deconvolution of the CLSL circular dichroism indicated that it was an α-helical lectin with α-helix and β-fold contents of 35.8% and 8.6%, respectively. CLSL could also selectively inhibit cell proliferation.
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Affiliation(s)
- Jing Hong
- College of Biological Science and Technology, Fuzhou University , 2 Xue Yuan Road, University Town, Fuzhou, Fujian 350108, China
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Hong J, Chen TT, Hu P, Yang J, Wang SY. Purification and characterization of an antioxidant peptide (GSQ) from Chinese leek (Allium tuberosum Rottler) seeds. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.05.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Ooi LSM, Wong EYL, Chiu LCM, Sun SSM, Ooi VEC. Antiviral and Anti-proliferative Glycoproteins from the Rhizome ofSmilax glabraRoxb (Liliaceae). THE AMERICAN JOURNAL OF CHINESE MEDICINE 2012; 36:185-95. [DOI: 10.1142/s0192415x08005692] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The glycoproteins possessing antiviral and anti-proliferative activities were isolated from the Chinese medicinal herb Smilax glabra (known as tufuling), by extraction with 0.2 M NaCl , ammonium sulfate precipitation, fetuin-agarose affinity chromatography and gel filtration. The molecular mass of the fetuin-binding glycoprotein (designated SGPF2) was estimated to be about 58 kDa, with a major protein subunit of 26 kDa. The non-fetuin binding glycoproteins (in the unadsorbed fraction) were further separated into 5 different subfractions (SGPF1a–SGPF1e) with anion-exchange chromatography, all of which also contained the major band at 26 kDa. All the isolated proteins of 26 kDa had similar N-terminal amino acid sequences, implying that they were probably the isoforms originated putatively from a multigene family with different binding affinity and ionic strength. The glycoprotein SGPF2 exhibited antiviral activity against respiratory syncytial virus (RSV) with a median inhibitory concentration (IC50) of 62.5 μg/ml and Herpes simplex virus type 1 (HSV-1) had an IC50of 31.3 μg/ml. The glycoprotein potencies for antiviral activity appeared to depend on the molecules' binding affinity for fetuin, that is, the fetuin-binding protein was more potent than the non-fetuin binding proteins. Further examination revealed that these glycoproteins also had the ability to suppress the proliferation of MCF-7 cells. The possible mechanism of anti-proliferative action as analyzed by DNA flow cytometry indicated that they could induce apoptosis mediated via sub-G1phase of the MCF-7 cell cycle. For example, there was an increase by 75.8% of the control level of apoptosis after incubation with SGPF1a.
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Affiliation(s)
- Linda S. M. Ooi
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Elaine Y. L. Wong
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Lawrence C. M. Chiu
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Samuel S. M. Sun
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Vincent E. C. Ooi
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
- Institute of Chinese Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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Routray W, Rayaguru K. Chemical Constituents and Post-Harvest Prospects ofPandanus amaryllifoliusLeaves: A Review. FOOD REVIEWS INTERNATIONAL 2010. [DOI: 10.1080/87559129.2010.484114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Ooi LSM, Wong EYL, Sun SSM, Ooi VEC. Purification and characterization of non-specific lipid transfer proteins from the leaves of Pandanus amaryllifolius (Pandanaceae). Peptides 2006; 27:626-32. [PMID: 16229926 DOI: 10.1016/j.peptides.2005.08.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 08/28/2005] [Accepted: 08/31/2005] [Indexed: 10/25/2022]
Abstract
Two proteins were isolated from the saline extract of mature leaves of Pandanus amaryllifolius, using affinity chromatography on fetuin-agarose and Affi-gel Blue gel, anion exchange chromatography as well as gel filtration. The proteins were demonstrated as non-glycoproteins, with molecular mass of 18 and 13 kDa, respectively, comprising of peptide subunits from 6.5 to 9 kDa in the forms of heterodimer and homodimer. All of them have similar N-terminal amino acid sequences with only minor variations and are matched to non-specific lipid transfer proteins (nsLTPs) of the other plants such as wheat LTP using NCBI Blast searching for short, nearly exact matches. Furthermore, they explicated each other as isoforms originated putatively from a multigene family with various molecular weight, binding affinity, ionic strength, and subunits. However, the potencies for antiproliferation of HL-60 cell line and inhibition of the growth of the bacteria Pseudomonas aeruginosa are different in that those of the fetuin-binding protein are greater than non-fetuin binding proteins. The non-specific lipid transfer proteins of P. amaryllifolius exhibit weak to moderate hemagglutinating activity toward rabbit erythrocytes, but, this activity could not be reversed by mannose. They thus could be easily differentiated from the previously reported mannose-binding lectin isolated from this plant, which has subunits with similar molecular weight.
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Affiliation(s)
- Linda S M Ooi
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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Ooi LSM, Sun SSM, Ooi VEC. Purification and characterization of a new antiviral protein from the leaves of Pandanus amaryllifolius (Pandanaceae). Int J Biochem Cell Biol 2005; 36:1440-6. [PMID: 15147723 DOI: 10.1016/j.biocel.2004.01.015] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/21/2004] [Indexed: 10/26/2022]
Abstract
A lectin, designated Pandanin, was isolated from the saline extract of the leaves of Pandanus amaryllifolius, using ammonium sulfate precipitation, affinity chromatography on mannose-agarose and molecular size exclusion by gel filtration. Pandanin is an unglycosylated protein with a molecular mass of 8.0 kDa both after gel filtration and on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, indicating that it is a single polypeptide chain. The first 10 residues of the N-terminal amino acid sequence are DNILFSDSTL. An analysis of the sequence of first 30 amino acids at the N-terminal region shows that Pandanin has about 50-60% homology to those of mannose-specific lectins reported from monocot plants. Pandanin exhibits hemagglutinating activity toward rabbit erythrocytes, and its activity could be reversed exclusively by mannose and mannan. Pandanin also possesses antiviral activities against human viruses, herpes simplex virus type-1 (HSV-1) and influenza virus (H1N1) with 3 day's EC50 of 2.94 and 15.63 microM, respectively.
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Affiliation(s)
- Linda S M Ooi
- Department of Biology, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
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