1
|
Valadez-Vega C, Lugo-Magaña O, Betanzos-Cabrera G, Villagómez-Ibarra JR. Partial Characterization of Lectins Purified from the Surco and Vara (Furrow and Rod) Varieties of Black Phaseolus vulgaris. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238436. [PMID: 36500537 PMCID: PMC9741355 DOI: 10.3390/molecules27238436] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/26/2022] [Accepted: 11/29/2022] [Indexed: 12/07/2022]
Abstract
As they manifest specifically and reversibly, lectins are proteins or glycoproteins with the characteristic of agglutinating erythrocytes. Given that grain legume lectins can represent 10% of protein content and can have various biological functions, they are extensively studied. The objective of this work was to purify and partially characterize the lectins of Phaseolus vulgaris black, var surco and vara (LBBS and LBBV). Both lectin types were purified by affinity chromatography on stroma matrix, which agglutinated human erythrocytes type A, B, and O, as well as rabbit, hamster, pig, and chicken erythrocytes. Native-PAGE was employed for molecular mass determination, yielding 109.36 and 112.68 kDa for BBS and BBV, respectively. Further analyses revealed that these lectins are tetrameric glycoproteins that require Ca+2, Mn+2 and Mg+2 ions for exhibiting their hemagglutinating function, which can be inhibited by fetuin. Moreover, optimal pH was established for both lectins (10.5 for LBBS and 7-9 for LBBV), while their activity was temperature-dependent and ceased above 70 °C. Finally, the observed differences in the biochemical characteristics and bioactive functions were ascribed to the different physiological characteristics of each seed, as well as the protein itself.
Collapse
Affiliation(s)
- Carmen Valadez-Vega
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, San Agustín Tlaxiaca 42080, Mexico
- Correspondence:
| | - Olivia Lugo-Magaña
- Preparatoria Número 1, Universidad Autónoma del Estado de Hidalgo, Av. Benito Juárez S/N, Constitución, Pachuca de Soto 42060, Mexico
| | - Gabriel Betanzos-Cabrera
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, San Agustín Tlaxiaca 42080, Mexico
| | - José Roberto Villagómez-Ibarra
- Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Universidad Autónoma del Estado del Hidalgo, Ciudad del Conocimiento, Mineral de la Reforma 42184, Mexico
| |
Collapse
|
2
|
Effects of Germination and Popping on the Anti-Nutritional Compounds and the Digestibility of Amaranthus hypochondriacus Seeds. Foods 2022; 11:foods11142075. [PMID: 35885318 PMCID: PMC9324154 DOI: 10.3390/foods11142075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 12/10/2022] Open
Abstract
Amaranth seeds, although a valuable food in Mexico, contain anti-nutritional compounds that can affect food quality. As a part of this work, the proximate composition, fatty acid profile, protein digestibility, and the effect of germination and popping of Amaranthus hypochondriacus seeds was analyzed with the aim of eliminating anti-nutritional compounds. Untreated seeds comprised of 11.35–18.8% protein and 0.27–13.39% lipids, including omega 3, 6, and 9 fatty acids such as oleic, linoleic, linolenic, and arachidonic acid. The main minerals detected were Ca+2, K+1, and Mg+2. Nevertheless in vitro studies indicate that germination significantly improved digestibility, whereby treatments aimed at reducing anti-nutritional compounds decreased lectin concentration, while significantly increasing tannins and completely eliminating trypsins and saponins.
Collapse
|
3
|
Valadez-Vega C, Lugo-Magaña O, Morales-González JA, Delgado-Olivares L, Izquierdo-Vega JA, Sánchez-Gutiérrez M, López-Contreras L, Bautista M, Velázquez-González C. Phytochemical, cytotoxic, and genotoxic evaluation of protein extract of Amaranthus hypochondriacus seeds. CYTA - JOURNAL OF FOOD 2021. [DOI: 10.1080/19476337.2021.1971771] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Carmen Valadez-Vega
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Olivia Lugo-Magaña
- Escuela Preparatoria número 1, Universidad Autónoma del Estado de Hidalgo, Pachuca de Soto, México
| | - José A. Morales-González
- Laboratorio de Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico nacional, México, Plan de San Luis y Díaz Mirón colonia Casco de Santo Tomas, alcaldía Miguel Hidalgo, México City, México
| | - Luis Delgado-Olivares
- Área Académica de Nutrición, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Jeannett A. Izquierdo-Vega
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Manuel Sánchez-Gutiérrez
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Luilli López-Contreras
- Área Académica de Medicina, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Mirandeli Bautista
- Área Académica de Farmacia, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| | - Claudia Velázquez-González
- Área Académica de Farmacia, Instituto de Ciencias de la Salud, Universidad Autónoma del Estado de Hidalgo, Ex-Hacienda de la Concepción, Tilcuautla, México
| |
Collapse
|
4
|
Combined effects of pH and thermal treatments on IgE-binding capacity and conformational structures of lectin from black kidney bean (Phaseolus vulgaris L.). Food Chem 2020; 329:127183. [PMID: 32521427 DOI: 10.1016/j.foodchem.2020.127183] [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] [Received: 12/15/2019] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 12/13/2022]
Abstract
Combined effects of pH and thermal treatments on black kidney bean lectin (BKBL) were investigated by response surface methodology (RSM). Low-pH (1.0, 2.0, 3.0) incubation decreased hemagglutination activity (HA) and IgE-binding capacity, but the activities would be restored when the lectin was treated by pH shifting to 7.2. Conformational structure analyses indicated that low-pH induced protein unfolding and pH-shifting treatment resulted in a limited structural rearrangement. Mild heating, such as 60 °C for 3 min, slightly increased the HA and IgE-binding activities of pH shifted BKBL, but no obvious effects in the pH 1.0 incubated BKBL. High-temperature and long-time treatment might induce the protein aggregation, further decreased HA and IgE-binding capacities. RSM results showed both IgE-binding capacity and HA were the lowest under the combination of pH 1.0 incubation with 80 °C heating for 15 min or pH shifting from 1.0 to 7.2 with 100 °C heating for 10 min.
Collapse
|
5
|
Islam F, Gopalan V, Lam AK, Kabir SR. Kaempferia rotunda tuberous rhizome lectin induces apoptosis and growth inhibition of colon cancer cells in vitro. Int J Biol Macromol 2019; 141:775-782. [DOI: 10.1016/j.ijbiomac.2019.09.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/24/2019] [Accepted: 09/06/2019] [Indexed: 12/18/2022]
|
6
|
Surya S, Haridas M. A New Galactose-Specific Lectin from Clerodendrum infortunatum.. IRANIAN JOURNAL OF BIOTECHNOLOGY 2018; 16:e1449. [PMID: 31457028 PMCID: PMC6697831 DOI: 10.21859/ijb.1449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/19/2018] [Accepted: 01/17/2018] [Indexed: 01/12/2023]
Abstract
Background The ethno-medical significance of Clerodendrum genus raises the interest towards the characterization of its seed lectin by inexpensive and most effective technique. Objective The focus of this study is the purification, characterization, and evaluation of the antioxidant and antiproliferative potential of a galactose-specific lectin from Clerodendrum infortunatum L. seeds. Materials and Methods The crude extract, homogenized in 6 volumes of the saline containing 10 mM β-mercaptoethanol was subjected to pigment removal by Toyopeal HW-55 column prior to ammonium sulfate fractionation (40-80 %). The crude protein extract was then loaded to the gel filtration column Sephadex G-200 followed by affinity chromatography using activated galactose coupled Sepharose-4B. Results The SDS-PAGE analysis showed a single band of about 30 kDa which further determined by MALDI-TOF analysis. The MALDI-TOF spectra revealed that Clerodendrum infortunatum lectin (CIL) is a homo-tetramer of 120 kDa consisting of four identical subunits of 30 kDa. The haemagglutination inhibition assay was done with purified lectin by many sugars, among which N-acetyl-D-galactosmine (NAG), D-galactose and lactose exhibited high inhibition. NAG showed the highest inhibition amongst the tested sugars, having the minimum inhibitory concentration of about 0.97 mM. The lectin exhibited a moderate antioxidant activity with an IC50 value of 6.1 ± 0.1 mg.mL-1 and induced cell death with IC50 of 82.8 μg.mL-1 against human gastric cancer cell line, AGS, indicated the potential of CIL for clinical and therapeutic applications. Conclusion The present study demonstrated the moderate ability of the CIL to inhibit the growth of human gastric cancer cells, AGS either by causing cytotoxic or anti-proliferative effects. Thus, CIL due to its remarkable properties may be considered as a potential bio-molecule in tumor research and glycobiology.
Collapse
Affiliation(s)
- Sukumaran Surya
- Inter University Centre for Bioscience and Department of Biotechnology and Microbiology, Kannur University, Thalassery Campus, Kannur 670661, India
| | - Madhathilkovilakathu Haridas
- Inter University Centre for Bioscience and Department of Biotechnology and Microbiology, Kannur University, Thalassery Campus, Kannur 670661, India
| |
Collapse
|
7
|
Islam F, Gopalan V, Lam AKY, Kabir SR. Pea lectin inhibits cell growth by inducing apoptosis in SW480 and SW48 cell lines. Int J Biol Macromol 2018; 117:1050-1057. [DOI: 10.1016/j.ijbiomac.2018.06.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 06/05/2018] [Indexed: 12/23/2022]
|
8
|
|
9
|
Phaseolus acutifolius Lectin Fractions Exhibit Apoptotic Effects on Colon Cancer: Preclinical Studies Using Dimethilhydrazine or Azoxi-Methane as Cancer Induction Agents. Molecules 2017; 22:molecules22101670. [PMID: 28991196 PMCID: PMC6151564 DOI: 10.3390/molecules22101670] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 09/28/2017] [Accepted: 09/28/2017] [Indexed: 01/08/2023] Open
Abstract
Phaseolus acutifolius (Tepary bean) lectins have been studied as cytotoxic molecules on colon cancer cells. The toxicological profile of a Tepary bean lectin fraction (TBLF) has shown low toxicity in experimental animals; exhibiting anti-nutritional effects such as a reduction in body weight gain and a decrease in food intake when using a dose of 50 mg/kg on alternate days for six weeks. Taking this information into account, the focus of this work was to evaluate the effect of the TBLF on colon cancer using 1,2-dimethylhydrazine (DMH) or azoxy-methane/dextran sodium sulfate (AOM/DSS) as colon cancer inductors. Rats were treated with DMH or AOM/DSS and then administered with TBFL (50 mg/kg) for six weeks. TBLF significantly decreased early tumorigenesis triggered by DMH by 70%, but without any evidence of an apoptotic effect. In an independent experiment, AOM/DSS was used to generate aberrant cryptic foci, which decreased by 50% after TBLF treatment. TBLF exhibited antiproliferative and proapoptotic effects related to a decrease of the signal transduction pathway protein Akt in its activated form and an increase of caspase 3 activity, but not to p53 activation. Further studies will deepen our knowledge of specific apoptosis pathways and cellular stress processes such as oxidative damage.
Collapse
|
10
|
Legume Lectins: Proteins with Diverse Applications. Int J Mol Sci 2017; 18:ijms18061242. [PMID: 28604616 PMCID: PMC5486065 DOI: 10.3390/ijms18061242] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Revised: 06/01/2017] [Accepted: 06/05/2017] [Indexed: 12/26/2022] Open
Abstract
Lectins are a diverse class of proteins distributed extensively in nature. Among these proteins; legume lectins display a variety of interesting features including antimicrobial; insecticidal and antitumor activities. Because lectins recognize and bind to specific glycoconjugates present on the surface of cells and intracellular structures; they can serve as potential target molecules for developing practical applications in the fields of food; agriculture; health and pharmaceutical research. This review presents the current knowledge of the main structural characteristics of legume lectins and the relationship of structure to the exhibited specificities; provides an overview of their particular antimicrobial; insecticidal and antitumor biological activities and describes possible applications based on the pattern of recognized glyco-targets.
Collapse
|
11
|
Gardères J, Bourguet-Kondracki ML, Hamer B, Batel R, Schröder HC, Müller WEG. Porifera Lectins: Diversity, Physiological Roles and Biotechnological Potential. Mar Drugs 2015; 13:5059-101. [PMID: 26262628 PMCID: PMC4557014 DOI: 10.3390/md13085059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 07/09/2015] [Accepted: 07/27/2015] [Indexed: 12/29/2022] Open
Abstract
An overview on the diversity of 39 lectins from the phylum Porifera is presented, including 38 lectins, which were identified from the class of demosponges, and one lectin from the class of hexactinellida. Their purification from crude extracts was mainly performed by using affinity chromatography and gel filtration techniques. Other protocols were also developed in order to collect and study sponge lectins, including screening of sponge genomes and expression in heterologous bacterial systems. The characterization of the lectins was performed by Edman degradation or mass spectrometry. Regarding their physiological roles, sponge lectins showed to be involved in morphogenesis and cell interaction, biomineralization and spiculogenesis, as well as host defense mechanisms and potentially in the association between the sponge and its microorganisms. In addition, these lectins exhibited a broad range of bioactivities, including modulation of inflammatory response, antimicrobial and cytotoxic activities, as well as anticancer and neuromodulatory activity. In view of their potential pharmacological applications, sponge lectins constitute promising molecules of biotechnological interest.
Collapse
Affiliation(s)
- Johan Gardères
- Unité Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS, Muséum National d’Histoire Naturelle, CP 54, 57 rue Cuvier, Paris 75005, France; E-Mails: (J.G.); (M.-L.B.-K.)
- Laboratory for Marine Molecular Biology, Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, 52210 Rovinj, Croatia; E-Mails: (B.H.); (R.B.)
- ERC Advanced Investigator Grant Research Group at Institute for Physiological Chemistry, University Medical Center of Johannes Gutenberg University Mainz, Duesbergweg 6, Mainz D-55128, Germany; E-Mail:
| | - Marie-Lise Bourguet-Kondracki
- Unité Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS, Muséum National d’Histoire Naturelle, CP 54, 57 rue Cuvier, Paris 75005, France; E-Mails: (J.G.); (M.-L.B.-K.)
| | - Bojan Hamer
- Laboratory for Marine Molecular Biology, Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, 52210 Rovinj, Croatia; E-Mails: (B.H.); (R.B.)
| | - Renato Batel
- Laboratory for Marine Molecular Biology, Center for Marine Research, Ruđer Bošković Institute, G. Paliaga 5, 52210 Rovinj, Croatia; E-Mails: (B.H.); (R.B.)
| | - Heinz C. Schröder
- ERC Advanced Investigator Grant Research Group at Institute for Physiological Chemistry, University Medical Center of Johannes Gutenberg University Mainz, Duesbergweg 6, Mainz D-55128, Germany; E-Mail:
| | - Werner E. G. Müller
- ERC Advanced Investigator Grant Research Group at Institute for Physiological Chemistry, University Medical Center of Johannes Gutenberg University Mainz, Duesbergweg 6, Mainz D-55128, Germany; E-Mail:
| |
Collapse
|
12
|
Valadez-Vega C, Morales-González JA, Sumaya-Martínez MT, Delgado-Olivares L, Cruz-Castañeda A, Bautista M, Sánchez-Gutiérrez M, Zuñiga-Pérez C. Cytotoxic and antiproliferative effect of tepary bean lectins on C33-A, MCF-7, SKNSH, and SW480 cell lines. Molecules 2014; 19:9610-27. [PMID: 25004071 PMCID: PMC6271045 DOI: 10.3390/molecules19079610] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 07/02/2014] [Accepted: 07/02/2014] [Indexed: 02/07/2023] Open
Abstract
For many years, several studies have been employing lectin from vegetables in order to prove its toxic effect on various cell lines. In this work, we analyzed the cytotoxic, antiproliferative, and post-incubatory effect of pure tepary bean lectins on four lines of malignant cells: C33-A; MCF-7; SKNSH, and SW480. The tests were carried out employing MTT and 3[H]-thymidine assays. The results showed that after 24 h of lectin exposure, the cells lines showed a dose-dependent cytotoxic effect, the effect being higher on MCF-7, while C33-A showed the highest resistance. Cell proliferation studies showed that the toxic effect induced by lectins is higher even when lectins are removed, and in fact, the inhibition of proliferation continues after 48 h. Due to the use of two techniques to analyze the cytotoxic and antiproliferative effect, differences were observed in the results, which can be explained by the fact that one technique is based on metabolic reactions, while the other is based on the 3[H]-thymidine incorporated in DNA by cells under division. These results allow concluding that lectins exert a cytotoxic effect after 24 h of exposure, exhibiting a dose-dependent effect. In some cases, the cytotoxic effect is higher even when the lectins are eliminated, however, in other cases, the cells showed a proliferative effect.
Collapse
Affiliation(s)
- Carmen Valadez-Vega
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| | - José A Morales-González
- Laboratorio Medicina de Conservación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Unidad Casco de Santo Tomas, México D.F. 11340, Mexico.
| | - María Teresa Sumaya-Martínez
- Secretary of Research and Graduate Studies, Autonomous University of Nayarit, Ciudad de la Cultura "Amado Nervo", Boulevard Tepic-Xalisco S/N. Tepic, Nayarit, 63190 Mexico.
| | - Luis Delgado-Olivares
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| | - Areli Cruz-Castañeda
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| | - Mirandeli Bautista
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| | - Manuel Sánchez-Gutiérrez
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| | - Clara Zuñiga-Pérez
- Instituto de Ciencias de la Salud. Universidad Autónoma del Estado de Hidalgo. Ex Hacienda la Concepción s/n. Carr. Pachuca-Tilcuautla C.P. 42060 Tilcuautla, Hidalgo, Mexico.
| |
Collapse
|
13
|
Shim E, Shim J, Klochkova TA, Han JW, Kim GH. PURIFICATION OF A SEX-SPECIFIC LECTIN INVOLVED IN GAMETE BINDING OF AGLAOTHAMNION CALLOPHYLLIDICOLA (RHODOPHYTA)(1). JOURNAL OF PHYCOLOGY 2012; 48:916-24. [PMID: 27009002 DOI: 10.1111/j.1529-8817.2012.01155.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Egg and sperm binding and correct recognition is the first stage for successful fertilization. In red algae, spermatial attachment to female trichogynes is mediated by a specific binding between the lectin(s) distributed on the surface of trichogyne and the complementary carbohydrates on the spermatial surface. A female-specific lectin was isolated from Aglaothamnion callophyllidicola by agarose-bound fetuin affinity chromatography. Two proteins, 50 and 14 kDa, eluted from the fetuin column were separated using a native-polyacrylamide gel electrophoresis method and subjected to a gamete binding assay. The 50 kDa protein, which blocked spermatial binding to female trichogynes, was used for further analysis. Internal amino acid sequence of the 50 kDa protein was analyzed using matrix-assisted laser desorption/ionization-mass spectrometry and degenerated primers were designed based on the information. A full-length cDNA encoding the lectin was obtained using rapid amplification of cDNA ends polymerase chain reaction (PCR). The cDNA was 1552 bp in length and coded for a protein of 450 amino acids with a deduced molecular mass of 50.7 kDa, which agreed well with the protein data. Real-time PCR analysis showed that this protein was up-regulated about 10-fold in female thalli. As the protein was novel and showed no significant homology to any known proteins, it was designated Rhodobindin.
Collapse
Affiliation(s)
- Eunyoung Shim
- Department of Biology, Kongju National University, Kongju, Chungnam 314-701, Korea
| | - Junbo Shim
- Department of Biology, Kongju National University, Kongju, Chungnam 314-701, Korea
| | - Tatyana A Klochkova
- Department of Biology, Kongju National University, Kongju, Chungnam 314-701, Korea
| | - Jong Won Han
- Department of Biology, Kongju National University, Kongju, Chungnam 314-701, Korea
| | - Gwang Hoon Kim
- Department of Biology, Kongju National University, Kongju, Chungnam 314-701, Korea
| |
Collapse
|
14
|
García-Gasca T, García-Cruz M, Hernandez-Rivera E, López-Matínez J, Castañeda-Cuevas AL, Yllescas-Gasca L, Rodríguez-Méndez AJ, Mendiola-Olaya E, Castro-Guillén JL, Blanco-Labra A. Effects of Tepary bean (Phaseolus acutifolius) protease inhibitor and semipure lectin fractions on cancer cells. Nutr Cancer 2012; 64:1269-78. [PMID: 23163855 PMCID: PMC3856472 DOI: 10.1080/01635581.2012.722246] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2012] [Accepted: 07/29/2012] [Indexed: 11/12/2022]
Abstract
Some natural and synthetic protease inhibitors (PI), such as the Bowman-Birk PI from soybean, have anticancer effects. We previously purified and characterized a Bowman-Birk-type PI from Tepary bean (Phaseolus acutifolius) seeds (TBPI). A semipure protein fraction containing this inhibitor, when tested its in vitro effect on transformed cells, showed a differential cytotoxic effect, as well as an increase in cell attachment to culture dishes. In this article we report that lectins were responsible for the cytotoxic effect previously observed, exhibiting a differential, antiproliferative effect on nontransformed cells and on different lineages of cancer cells. Although the purified TBPI lacked cytotoxicity, it was found to be responsible for the increase in cell adhesion, decreasing culture dishes' extracellular matrix degradation, leading to a decrease of the in vitro cell invasion capacity. This effect coincided with the suppression of Matrix Metalloproteinase-9 activity. These results indicate that Tepary bean seeds contain at least 2 different groups of bioactive proteins with distinct effects on cancer cells.
Collapse
Affiliation(s)
- Teresa García-Gasca
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Querétaro, México.
| | | | | | | | | | | | | | | | | | | |
Collapse
|