1
|
Nubi T, Adewole TS, Agunbiade TO, Osukoya OA, Kuku A. Purification and erythrocyte-membrane perturbing activity of a ketose-specific lectin from Moringa oleifera seeds. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021; 31:e00650. [PMID: 34258240 PMCID: PMC8253949 DOI: 10.1016/j.btre.2021.e00650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 05/26/2021] [Accepted: 06/16/2021] [Indexed: 12/17/2022]
Abstract
This study purified a hemagglutinating protein (MoL) from Moringa oleifera seed, and investigated its hemolytic activity. Molecular weight and stability of MoL were also determined. Modification of some amino acid residues was carried out and the effect on MoL hemagglutinating activity determined. Other investigated parameters are the effects of temperature, concentration, incubation period, pH, and sugars on the protein's hemagglutinating and hemolytic activities. The native and subunit molecular weights were estimated as 30 and 27.5 kDa respectively. Hemagglutinating activity of MoL was slightly inhibited by fructose and sucrose, stable at temperature up to 90°C and within pH range of 2-4. Modification of tryptophan and arginine residues resulted in partial loss of hemagglutinating activity. The hemolytic activity of MoL was concentration, temperature, pH, and time-dependent. The study concluded that MoL showed hemolytic (membrane-perturbing) activity in moderate acidic conditions. This suggests its potential exploitation in improved intracellular delivery of bioactive compounds.
Collapse
Affiliation(s)
- Tolulope Nubi
- Department of Biochemistry and Molecular Biology, Obafemi Awolowo University Ile-Ife, PMB 13, Nigeria
| | | | | | | | - Adenike Kuku
- Department of Biochemistry and Molecular Biology, Obafemi Awolowo University Ile-Ife, PMB 13, Nigeria
| |
Collapse
|
2
|
Gupta N, Gautam AK, Bhagyawant SS. Biochemical characterisation of lectin from wild chickpea (Cicer reticulatum L.) with potential inhibitory action against human cancer cells. J Food Biochem 2018; 43:e12712. [PMID: 31353649 DOI: 10.1111/jfbc.12712] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/10/2018] [Accepted: 09/27/2018] [Indexed: 11/28/2022]
Abstract
A wild chickpea lectin (WCL) from the seeds of Cicer reticulatum L. was chromato-purified using DEAE-Cellulose and SP-Sephadex ion exchange chromatography. WCL was thermostable upto 60°C with broad pH optima (pH 5-9) and various divalent metal ions did not influence its activity. WCL demonstrated DNA protection in a dose-dependent manner. The lectin exerted antifungal activity against diverse fungal pathogens. WCL augmented the mitogenic response of mouse spleen cells at 10 µg/ml concentration and showed an inhibition of HIV-1 reverse transcriptase at IC50 of 200 µM. Against human cancer cell lines, lectin demonstrated anticancer potential. The cell viability assay in HepG2, Ishikawa, MCF-7 and MDA-MB-231 cell line demonstrated IC50 values of 61.8, 54.4, 37.5 and 44.2 µg/ml respectively. PRACTICAL APPLICATIONS: WCL exhibited distinct medicinal properties vis-à-vis antiproliferative, mitogenic, antifungal/bacterial and HIV-1 reverse transcriptase inhibiting activities. The potential of WCL can be a subject of exploration from a pharmacological standpoint.
Collapse
Affiliation(s)
- Neha Gupta
- School of Studies in Biotechnology, Jiwaji University, Gwalior, India
| | - Ajay Kumar Gautam
- School of Studies in Biotechnology, Jiwaji University, Gwalior, India
| | | |
Collapse
|
3
|
Azarkan M, Feller G, Vandenameele J, Herman R, El Mahyaoui R, Sauvage E, Vanden Broeck A, Matagne A, Charlier P, Kerff F. Biochemical and structural characterization of a mannose binding jacalin-related lectin with two-sugar binding sites from pineapple (Ananas comosus) stem. Sci Rep 2018; 8:11508. [PMID: 30065388 PMCID: PMC6068142 DOI: 10.1038/s41598-018-29439-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 07/06/2018] [Indexed: 02/07/2023] Open
Abstract
A mannose binding jacalin-related lectin from Ananas comosus stem (AcmJRL) was purified and biochemically characterized. This lectin is homogeneous according to native, SDS-PAGE and N-terminal sequencing and the theoretical molecular mass was confirmed by ESI-Q-TOF-MS. AcmJRL was found homodimeric in solution by size-exclusion chromatography. Rat erythrocytes are agglutinated by AcmJRL while no agglutination activity is detected against rabbit and sheep erythrocytes. Hemagglutination activity was found more strongly inhibited by mannooligomannosides than by D-mannose. The carbohydrate-binding specificity of AcmJRL was determined in some detail by isothermal titration calorimetry. All sugars tested were found to bind with low affinity to AcmJRL, with Ka values in the mM range. In agreement with hemagglutination assays, the affinity increased from D-mannose to di-, tri- and penta-mannooligosaccharides. Moreover, the X-ray crystal structure of AcmJRL was obtained in an apo form as well as in complex with D-mannose and methyl-α-D-mannopyranoside, revealing two carbohydrate-binding sites per monomer similar to the banana lectin BanLec. The absence of a wall separating the two binding sites, the conformation of β7β8 loop and the hemagglutinating activity are reminiscent of the BanLec His84Thr mutant, which presents a strong anti-HIV activity in absence of mitogenic activity.
Collapse
Affiliation(s)
- Mohamed Azarkan
- Université Libre de Bruxelles, Faculty of Medicine, Protein Chemistry Unit, Campus Erasme (CP 609), 808 route de Lennik, 1070, Brussels, Belgium
| | - Georges Feller
- Laboratory of Biochemistry, Center for Protein Engineering-InBioS, Institute of Chemistry B6a, University of Liège, 4000, Liège, Belgium
| | - Julie Vandenameele
- Laboratory of Enzymology and Protein Folding, Centre for Protein Engineering-InBioS, Institut de Chimie B6, University of Liège, 4000, Liège, Belgium
| | - Raphaël Herman
- Laboratory of crystallography, Center for Protein Engineering-InBioS, B5a, University of Liège, 4000, Liège, Belgium
| | - Rachida El Mahyaoui
- Université Libre de Bruxelles, Faculty of Medicine, Protein Chemistry Unit, Campus Erasme (CP 609), 808 route de Lennik, 1070, Brussels, Belgium
| | - Eric Sauvage
- Laboratory of crystallography, Center for Protein Engineering-InBioS, B5a, University of Liège, 4000, Liège, Belgium
| | - Arnaud Vanden Broeck
- Laboratory of crystallography, Center for Protein Engineering-InBioS, B5a, University of Liège, 4000, Liège, Belgium
| | - André Matagne
- Laboratory of Enzymology and Protein Folding, Centre for Protein Engineering-InBioS, Institut de Chimie B6, University of Liège, 4000, Liège, Belgium
| | - Paulette Charlier
- Laboratory of crystallography, Center for Protein Engineering-InBioS, B5a, University of Liège, 4000, Liège, Belgium
| | - Frédéric Kerff
- Laboratory of crystallography, Center for Protein Engineering-InBioS, B5a, University of Liège, 4000, Liège, Belgium.
| |
Collapse
|
4
|
Biochemical and functional properties of a lectin purified from the seeds of Cicer arietinum L. 3 Biotech 2018; 8:272. [PMID: 29868310 DOI: 10.1007/s13205-018-1272-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 05/02/2018] [Indexed: 02/08/2023] Open
Abstract
A 35 kDa rabbit erythrocyte agglutinating lectin from the seeds of Cicer arietinum was purified and designated as CAL. The lectin was inhibited by fetuin and N-acetyl-d-galactosamine at a concentration of 20 and 50 mM respectively, but not by simple mono or oligosaccharides. CAL is active between pH 5 and 10 presented thermo stability up to 50 °C and demonstrated DNA damage inhibition at 30 µg concentration. The lectin elicited maximum mitogenic activity towards mice splenocytes at 7.5 µg ml- 1. CAL exerted an inhibitory activity on HIV-1 reverse transcriptase with IC50 of 180 µM. CAL abilities in animal bioassay resulted decreased levels of total triglyceride and creatinine. In vitro and in vivo studies revealed that CAL may constitute an important role impending biomedical applications.
Collapse
|
5
|
Yang L, He QS, Corscadden K, Udenigwe CC. The prospects of Jerusalem artichoke in functional food ingredients and bioenergy production. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2015; 5:77-88. [PMID: 28626686 PMCID: PMC5466194 DOI: 10.1016/j.btre.2014.12.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 11/24/2014] [Accepted: 12/08/2014] [Indexed: 01/09/2023]
Abstract
Jerusalem artichoke, a native plant to North America has recently been recognized as a promising biomass for bioeconomy development, with a number of advantages over conventional crops such as low input cultivation, high crop yield, wide adaptation to climatic and soil conditions and strong resistance to pests and plant diseases. A variety of bioproducts can be derived from Jerusalem artichoke, including inulin, fructose, natural fungicides, antioxidant and bioethanol. This paper provides an overview of the cultivation of Jerusalem artichoke, derivation of bioproducts and applicable production technologies, with an expectation to draw more attention on this valuable crop for its applications as biofuel, functional food and bioactive ingredient sources.
Collapse
Affiliation(s)
- Linxi Yang
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Quan Sophia He
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Kenneth Corscadden
- Department of Engineering, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Chibuike C. Udenigwe
- Department of Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS B2N 5E3, Canada
| |
Collapse
|
6
|
Chan YS, Wong JH, Fang EF, Pan W, Ng TB. A hemagglutinin from northeast red beans with immunomodulatory activity and anti-proliferative and apoptosis-inducing activities toward tumor cells. Protein Pept Lett 2014; 20:1159-69. [PMID: 23514011 DOI: 10.2174/0929866511320100011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Revised: 03/05/2013] [Accepted: 03/08/2013] [Indexed: 01/06/2023]
Abstract
A 64-kDa hemagglutinin from a Phaseolus vulgaris cultivar, the northeast red bean, was purified by a protocol composed of three chromatographic steps involving affinity chromatography on Affi-gel blue gel, cation exchange chromatography on SP-Sepharose and FPLC-gel filtration on Superdex 75. The purified hemagglutinin appeared as a single 32-kDa band in SDS-PAGE indicating its dimeric nature. The N-terminal amino acid sequence of the hemagglutinin resembled the sequences of lectins and hemagglutinins from a number of Phaseolus species. The hemagglutinin manifested moderate thermostability and pH stability. It retained full activity up to 65 °C and in the pH range 2-12. It did not interact with simple sugars such as glucose, mannose and galactose. The hemagglutinin exerted immunostimulatory effects by upregulating the expression of cytokines like interferon-γ and tumor necrosis factor-α. It also exhibited antiproliferative activity on a number of tumor cells including MCF7 (breast cancer), HepG2 (liver cancer), CNE1 and CNE2 (nasopharyngeal cancer) cells, with stronger activity toward MCF7 and CNE1 cells. The hemagglutinin induced phophatidylserine externalization, mitochondrial depolarization and DNA condensation in MCF7 cells, indicating initiation of apoptosis. However, at high hemagglutinin concentrations, severe damage to the MCF7 cells was detected.
Collapse
Affiliation(s)
- Yau Sang Chan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | | | | | | | | |
Collapse
|
7
|
Chan YS, Ng TB. Northeast red beans produce a thermostable and pH-stable defensin-like peptide with potent antifungal activity. Cell Biochem Biophys 2014; 66:637-48. [PMID: 23292358 DOI: 10.1007/s12013-012-9508-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
A 5.4-kDa antifungal peptide was purified from Phaseolus vulgaris L. cv. "northeast red bean" using a protocol that entailed affinity chromatography, ion exchange chromatography, and gel filtration. The molecular mass was determined by matrix-assisted laser desorption ionization time-of-flight. The N-terminal amino acid sequence of the peptide was highly homologous to defensins and defensin-like peptides from several plant species. The peptide impeded the growth of a number of pathogenic fungi, including Mycosphaerella arachidicola Khokhr. (IC50 = 1.7 μM), Setosphaeria turcica Luttr., Fusarium oxysporum Schltdl., and Valsa mali Miyabe & G. Yamada. Antifungal activity of the peptide was fully preserved at temperatures up to 100 °C and pH values from 0 to 12. Congo red deposition at the hyphal tip of M. arachidicola was detected after exposure to the peptide, signifying that the peptide had suppressed hyphal growth. The antifungal peptide did not manifest antiproliferative activity toward human breast cancer MCF7 cells and hepatoma HepG2 cells, in contradiction to the bulk of previously reported plant defensins. The data suggest distinct structural requirements for antifungal and antiproliferative activities.
Collapse
Affiliation(s)
- Yau Sang Chan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | | |
Collapse
|
8
|
A lectin with highly potent inhibitory activity toward breast cancer cells from edible tubers of Dioscorea opposita cv. nagaimo. PLoS One 2013; 8:e54212. [PMID: 23349827 PMCID: PMC3549954 DOI: 10.1371/journal.pone.0054212] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 12/10/2012] [Indexed: 11/19/2022] Open
Abstract
A 70-kDa galactose-specific lectin was purified from the tubers of Dioscorea opposita cv. nagaimo. The purification involved three chromatographic steps: anion exchange chromatography on a Q-Sepharose column, FPLC-anion exchange chromatography on a Mono Q column, and FPLC-gel filtration on a Superdex 75 column. The purified nagaimo lectin presented as a single 35-kDa band in reducing SDS-PAGE while it exhibited a 70-kDa single band in non-reducing SDS-PAGE suggesting its dimeric nature. Nagaimo lectin displayed moderate thermostability, retaining full hemagglutinating activity after heating up to 62°C for 30 minutes. It also manifested stability over a wide pH range from pH 2 to 13. Nagaimo lectin was a galactose-specific lectin, as evidenced by binding with galactose and galactose-containing sugars such as lactose and raffinose. The minimum concentration of galactose, lactose and raffinose required to exert an inhibitory effect on hemagglutinating activity of nagaimo lectin was 20 mM, 5 mM and 40 mM, respectively. Nagaimo lectin inhibited the growth of some cancer cell lines including breast cancer MCF7 cells, hepatoma HepG2 cells and nasopharyngeal carcinoma CNE2 cells, with IC(50) values of 3.71 µM, 7.12 µM and 19.79 µM, respectively, after 24 hour treatment with nagaimo lectin. The induction of phosphatidylserine externalization and mitochondrial depolarization indicated that nagaimo lectin evoked apoptosis in MCF7 cells. However, the anti-proliferative activity of nagaimo lectin was not blocked by application of galactose, signifying that the activity was not related to the carbohydrate binding specificity of the lectin.
Collapse
|
9
|
Brown Kidney Bean Bowman–Birk Trypsin Inhibitor is Heat and pH Stable and Exhibits Anti-proliferative Activity. Appl Biochem Biotechnol 2013; 169:1306-14. [DOI: 10.1007/s12010-012-9998-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 11/08/2012] [Indexed: 10/27/2022]
|
10
|
Chan YS, Wong JH, Fang EF, Pan W, Ng TB. Isolation of a glucosamine binding leguminous lectin with mitogenic activity towards splenocytes and anti-proliferative activity towards tumor cells. PLoS One 2012; 7:e38961. [PMID: 22720002 PMCID: PMC3375228 DOI: 10.1371/journal.pone.0038961] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 05/16/2012] [Indexed: 02/03/2023] Open
Abstract
A dimeric 64-kDa glucosamine-specific lectin was purified from seeds of Phaseolus vulgaris cv. “brown kidney bean.” The simple 2-step purification protocol involved affinity chromatography on Affi-gel blue gel and gel filtration by FPLC on Superdex 75. The lectin was absorbed on Affi-gel blue gel and desorbed using 1M NaCl in the starting buffer. Gel filtration on Superdex 75 yielded a major absorbance peak that gave a single 32-kDa band in SDS-PAGE. Hemagglutinating activity was completely preserved when the ambient temperature was in the range of 20°C–60°C. However, drastic reduction of the activity occurred at temperatures above 65°C. Full hemagglutinating activity of the lectin was observed at an ambient pH of 3 to 12. About 50% activity remained at pH 0–2, and only residual activity was observed at pH 13–14. Hemagglutinating activity of the lectin was inhibited by glucosamine. The brown kidney bean lectin elicited maximum mitogenic activity toward murine splenocytes at 2.5 µM. The mitogenic activity was nearly completely eliminated in the presence of 250 mM glucosamine. The lectin also increased mRNA expression of the cytokines IL-2, TNF-α and IFN-γ. The lectin exhibited antiproliferative activity toward human breast cancer (MCF7) cells, hepatoma (HepG2) cells and nasopharyngeal carcinoma (CNE1 and CNE2) cells with IC50 of 5.12 µM, 32.85 µM, 3.12 µM and 40.12 µM respectively after treatment for 24 hours. Flow cytometry with Annexin V and propidum iodide staining indicated apoptosis of MCF7 cells. Hoechst 33342 staining also indicated formation of apoptotic bodies in MCF7 cells after exposure to brown kidney bean lectin. Western blotting revealed that the lectin-induced apoptosis involved ER stress and unfolded protein response.
Collapse
Affiliation(s)
- Yau Sang Chan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Jack Ho Wong
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Evandro Fei Fang
- Laboratory of Molecular Gerontology, National Institute on Aging, Baltimore, Maryland, United States of America
| | - Wenliang Pan
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Tzi Bun Ng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
- * E-mail:
| |
Collapse
|
11
|
Taha H, Abd El-Kawy A, Fathalla MAEK. A new approach for achievement of inulin accumulation in suspension cultures of Jerusalem artichoke (Helianthus tuberosus) using biotic elicitors. JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2012. [DOI: 10.1016/j.jgeb.2012.02.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
12
|
Grunwald I, Heinig I, Thole HH, Neumann D, Kahmann U, Kloppstech K, Gau AE. Purification and characterisation of a jacalin-related, coleoptile specific lectin from Hordeum vulgare. PLANTA 2007; 226:225-34. [PMID: 17245569 DOI: 10.1007/s00425-006-0467-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2006] [Accepted: 12/15/2006] [Indexed: 05/13/2023]
Abstract
A plant lectin was isolated from barley (Hordeum vulgare) coleoptiles using acidic extraction and different chromatographic methods. Sequencing of more than 50% of the protein sequence by Edman degradation confirmed a full-length cDNA clone. The subsequently identified open reading frame encodes for a 15 kDa protein which could be found in the soluble fraction of barley coleoptiles. This protein exhibited specificity towards mannose sugar and is therefore, accordingly named as Horcolin (Hordeum vulgare coleoptile lectin). Database searches performed with the Horcolin protein sequence revealed a sequence and structure homology to the lectin family of jacalin-related lectins. Together with its affinity towards mannose, Horcolin is now identified as a new member of the mannose specific subgroup of jacalin-related lectins in monocot species. Horcolin shares a high amino acid homology to the highly light-inducible protein HL#2 and, in addition to two methyl jasmonic acid-inducible proteins of 32.6 and 32.7 kDa where the jasmonic acid-inducible proteins are examples of bitopic chimerolectins containing a dirigent and jacalin-related domain. Immunoblot analysis with a cross-reactive anti-HL#2 antibody in combination with Northern blot analysis of the Horcolin cDNA revealed tissue specific expression of Horcolin in the coleoptiles. The function of Horcolin is discussed in the context of its particular expression in coleoptiles and is then compared to other lectins, which apparently share a related response to biotic or abiotic stress factors.
Collapse
Affiliation(s)
- Ingo Grunwald
- Fraunhofer IFAM, Adhesive Bonding Technology and Surfaces, Wiener Str. 12, 28359, Bremen, Germany
| | | | | | | | | | | | | |
Collapse
|
13
|
Suseelan K, Bhagwath A, Pandey R, Gopalakrishna T. Characterization of Con C, a lectin from Canavalia cathartica Thouars seeds. Food Chem 2007. [DOI: 10.1016/j.foodchem.2006.11.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
Alencar VBM, Brito GAC, Alencar NMN, Assreuy AMS, Pinto VPT, Teixeira EH, Souza EP, Debray H, Ribeiro RA, Cavada BS. Helianthus tuberosus agglutinin directly induces neutrophil migration, which can be modulated/inhibited by resident mast cells. Biochem Cell Biol 2005; 83:659-66. [PMID: 16234855 DOI: 10.1139/o05-118] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We investigated the effect of Helianthus tuberosus agglutinin (HTA) on neutrophil migration in vivo and in vitro. The role of resident cells in this effect was analyzed. Peritonitis was induced by injecting stimuli into rat (150–200 g) peritoneal cavities, and in vitro neutrophil chemotaxis was performed using a Boyden microchamber. HTA (80, 200, or 500 µg/mL per cavity) induced significant in vivo neutrophil migration (p < 0.05); in vitro assays showed that this lectin also induced neutrophil chemotaxis, an effect inhibited by the incubation of lectin associated with α-D(+)-mannose, its specific binding sugar. Depletion of the resident-cell population by peritoneal lavage did not alter HTA-induced neutrophil migration (200 µg/mL per cavity). The opposite strategy, increasing peritoneal macrophages by intraperitoneally injecting rats with thioglycollate, did not enhance the neutrophil migration produced by HTA (200 µg/mL per cavity). In addition, injection of supernatant from HTA-stimulated macrophage culture (300 µg/mL) into rat peritoneal cavities did not induce neutrophil migration. However, reduction of the peritoneal mast-cell population potentiated the neutrophil migration (p < 0.05) induced by HTA (200 µg/mL per cavity). Lectin from H. tuberosus has a direct neutrophil chemotatic effect that is modulated by mast cells.Key words: lectins, inflammation, Helianthus tuberosus, neutrophil migration.
Collapse
Affiliation(s)
- Veruska B M Alencar
- Dept. de Fisiologia e Farmacologia/Faculdade de Medicina, UniversidadeFederal do Ceará, Rua Coronel Nunes de Melo, 1127 Rodolfo Teófilo 60430-270, Fortaleza, Ceará, Brazil
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
Suseelan KN, Mitra R, Bhatia CR, Gopalakrishna T. The in vivo synthesis and accumulation of lectin in developing seeds of black gram (Vigna mungo L. Hepper). PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2004; 59:123-128. [PMID: 15678718 DOI: 10.1007/s11130-004-0050-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Black gram (Vigna mungo L. Hepper) seed contains two D-galactose-specific lectin species, BGL-I and BGL-II, identified on the basis of elution from ion exchange column and immunochemical cross-reactivity. BGL-I consisted of two monomeric lectins, BGL-I-1 and BGL-1-2, of relative molecular weights 94 and 89 kDa, respectively. BGL-II is another monomeric lectin with a molecular weight of 83 kDa. The in vivo synthesis studies using pulse-chase experiment showed that BGL-II lectin was synthesized as early as 14 days after flowering (DAF). The 94-kDa BGL-I-1 lectin was synthesized around 17 DAF. There was no cotranslational or posttranslational modification of the lectin proteins. The amount of lectin in developing seeds was determined by radial immunodiffusion assay technique. The maximum amount of lectin per seed was found at 28 DAF.
Collapse
Affiliation(s)
- K N Suseelan
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Trombay. Mumbai-400 085, India.
| | | | | | | |
Collapse
|
16
|
Suseelan KN, Mitra R, Pandey R, Sainis KB, Krishna TG. Purification and characterization of a lectin from wild sunflower (Helianthus tuberosus L.) tubers. Arch Biochem Biophys 2002; 407:241-7. [PMID: 12413497 DOI: 10.1016/s0003-9861(02)00517-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A lectin (HTTL) was isolated from Helianthus tuberosus L. (wild sunflower) tubers using ion-exchange chromatography, gel filtration, and affinity chromatography. The lectin agglutinated both untreated and trypsin-treated rabbit erythrocytes and did not agglutinate human blood cells of groups A, B, and O. The gel filtration showed the native molecular mass of 72 kDa and subunit molecular masses of 17 and 18.5 kDa on 12% SDS-PAGE. The lectin activity was inhibited by D-mannose. The tetrameric protein revealed a unique characteristic by forming a broad zone of protein in native PAGE at pH 8.3, which dissociated into seven subunits of varying e/m ratios on acid gel at pH 4.3. These seven bands revealed two polypeptide species of molecular masses 17 and 18.5 kDa on 12% SDS-PAGE, as in the case of the native protein. The result indicated that of the seven subunits, three were homotetramers of 17 kDa, one was a homotetramer of 18.5 kDa, and three were heterotetramers of 17 and 18.5 kDa. The lectin was thermostable with broad pH optima (pH 4-8) and had no requirement for divalent metal cations for its activity. The amino acid composition showed that the lectin contained higher amounts of glycine, alanine, and lysine, but no methionine. The sugar content was estimated to be 5.3% mannose equivalent. The HTTL was mitogenic to mouse spleen (total) cells at 25 microg/ml concentration. The lectin showed characteristics different from those of the earlier reported H. tuberosus tuber lectins and hence opens up a new avenue to investigate the structure-function relationship of lectin in Helianthus species.
Collapse
Affiliation(s)
- K N Suseelan
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
| | | | | | | | | |
Collapse
|
17
|
Van Damme EJ, Barre A, Mazard AM, Verhaert P, Horman A, Debray H, Rouge P, Peumans WJ. Characterization and molecular cloning of the lectin from Helianthus tuberosus. EUROPEAN JOURNAL OF BIOCHEMISTRY 1999; 259:135-42. [PMID: 9914485 DOI: 10.1046/j.1432-1327.1999.00013.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A lectin called Helianthus tuberosus agglutinin or Heltuba has been isolated from tubers of the Jerusalem artichoke, a typical representative of the Asteraceae family. Heltuba is a tetrameric protein composed of four identical subunits of 15.5 kDa and exhibits a preferential specificity towards oligomannosides. Cloning of the corresponding cDNAs revealed that the mature lectin polypeptide comprises the entire open reading frame of the cDNA suggesting that the primary translation product is not processed and that the lectin is a cytosolic protein. Searches in the databases revealed sequence similarity with lectins from the taxonomically unrelated Convolvulaceae and Moraceae species. Therefore, the discovery of Heltuba is of great importance in view of the occurrence and molecular evolution of the jacalin-related lectins.
Collapse
Affiliation(s)
- E J Van Damme
- Laboratorium voor Fytopathologie en Plantebescherming, Katholieke Universiteit Leuven, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|