151
|
Medeiros A, Berois N, Incerti M, Bay S, Franco Fraguas L, Osinaga E. A Tn antigen binding lectin from Myrsine coriacea displays toxicity in human cancer cell lines. J Nat Med 2012; 67:247-54. [PMID: 22645079 DOI: 10.1007/s11418-012-0671-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Accepted: 04/11/2012] [Indexed: 02/06/2023]
Abstract
The Tn antigen (GalNAc-O-Ser/Thr) is one of the most specific human cancer-associated structures. In the present study we characterize the biochemical and functional properties of the Myrsine coriacea lectin (McL). We show that McL is an unusual high molecular weight highly glycosylated protein, which displays a strong Tn binding activity. The lectin exhibits in vitro inhibition of proliferation in the six cancer cell lines evaluated, in a dose-dependent manner (the strongest activity being against HT-29 and HeLa cells), whereas it does not exhibit toxicity against normal lymphocytes. McL could be exploited in the design of potential new tools for the diagnosis or treatment of cancer.
Collapse
Affiliation(s)
- Andrea Medeiros
- Departamento de Bioquímica, Facultad de Medicina, Universidad de la República, Av. Gral. Flores 2125, 11800, Montevideo, Uruguay
| | | | | | | | | | | |
Collapse
|
152
|
Oliveira C, Teixeira JA, Domingues L. Recombinant lectins: an array of tailor-made glycan-interaction biosynthetic tools. Crit Rev Biotechnol 2012; 33:66-80. [DOI: 10.3109/07388551.2012.670614] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
153
|
Nolte S, de Castro Damasio D, Baréa AC, Gomes J, Magalhães A, Mello Zischler LF, Stuelp-Campelo PM, Elífio-Esposito SL, Roque-Barreira MC, Reis CA, Moreno-Amaral AN. BJcuL, a lectin purified from Bothrops jararacussu venom, induces apoptosis in human gastric carcinoma cells accompanied by inhibition of cell adhesion and actin cytoskeleton disassembly. Toxicon 2012; 59:81-5. [DOI: 10.1016/j.toxicon.2011.10.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 10/20/2011] [Accepted: 10/27/2011] [Indexed: 10/15/2022]
|
154
|
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
|
155
|
Huang LH, Yan QJ, Kopparapu NK, Jiang ZQ, Sun Y. Astragalus membranaceus lectin (AML) induces caspase-dependent apoptosis in human leukemia cells. Cell Prolif 2011; 45:15-21. [PMID: 22172162 DOI: 10.1111/j.1365-2184.2011.00800.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVES Recently, plant lectins have attracted great interest due to their various biological activities such as anti-cancer, anti-fungal and anti-viral activities. We have reported earlier concerning anti-proliferation of human cancer cell lines by a galactose-binding lectin (AML), from a Chinese herb, ASTRAGALUS MEMBRANACEUS: In the present study, detailed investigations into the mechanism of such anti-proliferation properties have been carried out. MATERIALS AND METHODS Mechanism of apoptosis initiation in K562 cells by AML was investigated by morphology, flow cytometry and western blot analysis. RESULTS AML induced apoptosis in a caspase-dependent manner in the chronic myeloid leukemia cell line, K562. Furthermore, we observed that cytotoxicity and apoptosis of K562 cells induced by AML were completely abolished in presence of lactose or galactose. CONCLUSIONS Our results suggest that AML could act as a potential anti-cancer drug.
Collapse
Affiliation(s)
- L H Huang
- Bioresource Utilization Laboratory, College of Engineering, China Agricultural University, Beijing, China
| | | | | | | | | |
Collapse
|
156
|
Huang LH, Yan QJ, Kopparapu NK, Jiang ZQ, Sun Y. Astragalus membranaceus lectin (AML) induces caspase-dependent apoptosis in human leukemia cells. Cell Prolif 2011. [DOI: 10.1111/j.1365-2184.2011.00800.x pmid: 22172162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
157
|
Cytotoxic effects of native and recombinant frutalin, a plant galactose-binding lectin, on HeLa cervical cancer cells. J Biomed Biotechnol 2011; 2011:568932. [PMID: 22131813 PMCID: PMC3206378 DOI: 10.1155/2011/568932] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 08/17/2011] [Accepted: 08/17/2011] [Indexed: 02/07/2023] Open
Abstract
Frutalin is the α-D-galactose-binding lectin isolated from breadfruit seeds. Frutalin was obtained from two different sources: native frutalin was purified from its natural origin, and recombinant frutalin was produced and purified from Pichia pastoris. This work aimed to study and compare the effect of native and recombinant frutalin on HeLa cervical cancer cells proliferation and apoptosis. Furthermore, the interaction between frutalin and the HeLa cells was investigated by confocal microscopy. Despite having different carbohydrate-binding affinities, native and recombinant frutalin showed an identical magnitude of cytotoxicity on HeLa cells growth (IC₅₀~100 μg/mL) and equally induced cell apoptosis. The interaction studies showed that both lectins were rapidly internalised and targeted to HeLa cell's nucleus. Altogether, these results indicate that frutalin action is not dependent on its sugar-binding properties. This study provides important information about the bioactivity of frutalin and contributes to the understanding of the plant lectins cytotoxic activity.
Collapse
|
158
|
Vandenborre G, Smagghe G, Van Damme EJM. Plant lectins as defense proteins against phytophagous insects. PHYTOCHEMISTRY 2011; 72:1538-50. [PMID: 21429537 DOI: 10.1016/j.phytochem.2011.02.024] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 02/21/2011] [Accepted: 02/22/2011] [Indexed: 05/19/2023]
Abstract
One of the most important direct defense responses in plants against the attack by phytophagous insects is the production of insecticidal peptides or proteins. One particular class of entomotoxic proteins present in many plant species is the group of carbohydrate-binding proteins or lectins. During the last decade a lot of progress was made in the study of a few lectins that are expressed in response to herbivory by phytophagous insects and the insecticidal properties of plant lectins in general. This review gives an overview of lectins with high potential for the use in pest control strategies based on their activity towards pest insects. In addition, potential target sites for lectins inside the insect and the mode of action are discussed. In addition, the effect of plant lectins on non-target organisms such as beneficial insects as well as on human/animal consumers is discussed. It can be concluded that some insecticidal lectins are useful tools that can contribute to the development of integrated pest management strategies with minimal effect(s) on non-target organisms.
Collapse
Affiliation(s)
- Gianni Vandenborre
- Laboratory of Biochemistry and Glycobiology, Department of Molecular Biotechnology, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | | | | |
Collapse
|
159
|
Tian L, Sun SSM. A cost-effective ELP-intein coupling system for recombinant protein purification from plant production platform. PLoS One 2011; 6:e24183. [PMID: 21918684 PMCID: PMC3168869 DOI: 10.1371/journal.pone.0024183] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 08/02/2011] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Plant bioreactor offers an efficient and economical system for large-scale production of recombinant proteins. However, high cost and difficulty in scaling-up of downstream purification of the target protein, particularly the common involvement of affinity chromatography and protease in the purification process, has hampered its industrial scale application, therefore a cost-effective and easily scale-up purification method is highly desirable for further development of plant bioreactor. METHODOLOGY/PRINCIPAL FINDINGS To tackle this problem, we investigated the ELP-intein coupling system for purification of recombinant proteins expressed in transgenic plants using a plant lectin (PAL) with anti-tumor bioactivity as example target protein and rice seeds as production platform. Results showed that ELP-intein-PAL (EiP) fusion protein formed novel irregular ER-derived protein bodies in endosperm cells by retention of endogenous prolamins. The fusion protein was partially self-cleaved in vivo, but only self-cleaved PAL protein was detected in total seed protein sample and deposited in protein storage vacuoles (PSV). The in vivo uncleaved EiP protein was accumulated up to 2-4.2% of the total seed protein. The target PAL protein could be purified by the ELP-intein system efficiently without using complicated instruments and expensive chemicals, and the yield of pure PAL protein by the current method was up to 1.1 mg/g total seed protein. CONCLUSION/SIGNIFICANCE This study successfully demonstrated the purification of an example recombinant protein from rice seeds by the ELP-intein system. The whole purification procedure can be easily scaled up for industrial production, providing the first evidence on applying the ELP-intein coupling system to achieve cost-effective purification of recombinant proteins expressed in plant bioreactors and its possible application in industry.
Collapse
Affiliation(s)
- Li Tian
- School of Life Sciences, Tsinghua University, Beijing, China
- Life Science Division, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
| | - Samuel S. M. Sun
- Life Science Division, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, China
- * E-mail:
| |
Collapse
|
160
|
Shetty KN, Bhat GG, Inamdar SR, Swamy BM, Suguna K. Crystal structure of a β-prism II lectin from Remusatia vivipara. Glycobiology 2011; 22:56-69. [PMID: 21788359 DOI: 10.1093/glycob/cwr100] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The crystal structure of a β-prism II (BP2) fold lectin from Remusatia vivipara, a plant of traditional medicinal value, has been determined at a resolution of 2.4 Å. This lectin (RVL, Remusatia vivipara lectin) is a dimer with each protomer having two distinct BP2 domains without a linker between them. It belongs to the "monocot mannose-binding" lectin family, which consists of proteins of high sequence and structural similarity. Though the overall tertiary structure is similar to that of lectins from snowdrop bulbs and garlic, crucial differences in the mannose-binding regions and oligomerization were observed. Unlike most of the other structurally known proteins in this family, only one of the three carbohydrate recognition sites (CRSs) per BP2 domain is found to be conserved. RVL does not recognize simple mannose moieties. RVL binds to only N-linked complex glycans like those present on the gp120 envelope glycoprotein of HIV and mannosylated blood proteins like fetuin, but not to simple mannose moieties. The molecular basis for these features and their possible functional implications to understand the different levels of carbohydrate affinities in this structural family have been investigated through structure analysis, modeling and binding studies. Apart from being the first structure of a lectin to be reported from the Araceae/Arum family, this protein also displays a novel mode of oligomerization among BP2 lectins.
Collapse
Affiliation(s)
- Kartika N Shetty
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560 012, India
| | | | | | | | | |
Collapse
|
161
|
Kumar R, Panwar B, Chauhan JS, Raghava GPS. Analysis and prediction of cancerlectins using evolutionary and domain information. BMC Res Notes 2011; 4:237. [PMID: 21774797 PMCID: PMC3161874 DOI: 10.1186/1756-0500-4-237] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Accepted: 07/20/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Predicting the function of a protein is one of the major challenges in the post-genomic era where a large number of protein sequences of unknown function are accumulating rapidly. Lectins are the proteins that specifically recognize and bind to carbohydrate moieties present on either proteins or lipids. Cancerlectins are those lectins that play various important roles in tumor cell differentiation and metastasis. Although the two types of proteins are linked, still there is no computational method available that can distinguish cancerlectins from the large pool of non-cancerlectins. Hence, it is imperative to develop a method that can distinguish between cancer and non-cancerlectins. RESULTS All the models developed in this study are based on a non-redundant dataset containing 178 cancerlectins and 226 non-cancerlectins in which no two sequences have more than 50% sequence similarity. We have applied the similarity search based technique, i.e. BLAST, and achieved a maximum accuracy of 43.25%. The amino acids compositional analysis have shown that certain residues (e.g. Leucine, Proline) were preferred in cancerlectins whereas some other (e.g. Asparatic acid, Asparagine) were preferred in non-cancerlectins. It has been found that the PROSITE domain "Crystalline beta gamma" was abundant in cancerlectins whereas domains like "SUEL-type lectin domain" were found mainly in non-cancerlectins. An SVM-based model has been developed to differentiate between the cancer and non-cancerlectins which achieved a maximum Matthew's correlation coefficient (MCC) value of 0.32 with an accuracy of 64.84%, using amino acid compositions. We have developed a model based on dipeptide compositions which achieved an MCC value of 0.30 with an accuracy of 64.84%. Thereafter, we have developed models based on split compositions (2 and 4 parts) and achieved an MCC value of 0.31, 0.32 with accuracies of 65.10% and 66.09%, respectively. An SVM model based on Position Specific Scoring Matrix (PSSM), generated by PSI-BLAST, was developed and achieved an MCC value of 0.36 with an accuracy of 68.34%. Finally, we have integrated the PROSITE domain information with PSSM and developed an SVM model that has achieved an MCC value of 0.38 with 69.09% accuracy. CONCLUSION BLAST has been found inefficient to distinguish between cancer and non-cancerlectins. We analyzed the protein sequences of cancer and non-cancerlectins and identified interesting patterns. We have been able to identify PROSITE domains that are preferred in cancer and non-cancerlectins and thus provided interesting insights into the two types of proteins. The method developed in this study will be useful for researchers studying cancerlectins, lectins and cancer biology. The web-server based on the above study, is available at http://www.imtech.res.in/raghava/cancer_pred/
Collapse
Affiliation(s)
- Ravi Kumar
- Bioinformatics Centre Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Bharat Panwar
- Bioinformatics Centre Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Jagat S Chauhan
- Bioinformatics Centre Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Gajendra PS Raghava
- Bioinformatics Centre Institute of Microbial Technology, Sector-39A, Chandigarh, India
| |
Collapse
|
162
|
Plant lectins: targeting programmed cell death pathways as antitumor agents. Int J Biochem Cell Biol 2011; 43:1442-9. [PMID: 21798364 DOI: 10.1016/j.biocel.2011.07.004] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 07/11/2011] [Accepted: 07/12/2011] [Indexed: 02/06/2023]
Abstract
Lectins, a group of highly diverse, carbohydrate-binding proteins of non-immune origin that are ubiquitously distributed in plants, animals and fungi, are well-characterized to have numerous links a wide range of pathological processes, most notably cancer. In this review, we present a brief outline of the representative plant lectins including Ricin-B family, proteins with legume lectin domains and GNA family that can induce cancer cell death via targeting programmed cell death pathways. Amongst these above-mentioned lectins, we demonstrate that mistletoe lectins (MLs), Ricin, Concanavalin A (ConA) and Polygonatum cyrtonema lectin (PCL) can lead to cancer cell programmed death via targeting apoptotic pathways. In addition, we show that ConA and PCL can also result in cancer cell programmed death by targeting autophagic pathways. Moreover, we summarize the possible anti-cancer therapeutic implications of plant lectins such as ConA, Phaseolus vulgaris lectin (PHA) and MLs that have been utilized at different stages of preclinical and clinical trials. Together, these findings can provide a comprehensive perspective for further elucidating the roles of plant lectins that may target programmed cell death pathways in cancer pathogenesis and therapeutics. And, this research may, in turn, ultimately help cancer biologists and clinicians to exploit lectins as potential novel antitumor drugs in the future.
Collapse
|
163
|
Yang Y, Xu HL, Zhang ZT, Liu JJ, Li WW, Ming H, Bao JK. Characterization, molecular cloning, and in silico analysis of a novel mannose-binding lectin from Polygonatum odoratum (Mill.) with anti-HSV-II and apoptosis-inducing activities. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2011; 18:748-755. [PMID: 21146383 DOI: 10.1016/j.phymed.2010.11.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 09/21/2010] [Accepted: 11/07/2010] [Indexed: 05/30/2023]
Abstract
Polygonatum odoratum lectin (POL), a novel mannose-binding lectin with anti-viral and apoptosis-inducing activities, was isolated from rhizomes of Polygonatum odoratum (Mill.) Druce. POL was a homo-tetramer with molecular weight of 11953.623Da per subunits as determined by gel filtration, SDS-PAGE and mass spectrometry. Based on its N-terminal 29-amino acid sequence the full-length cDNA sequence of POL was cloned. Subsequent phylogenetic analysis and molecular modeling revealed that POL belonged to the Galanthus nivalis agglutinin (GNA)-related lectin family, which acquired unique mannose-binding specificity. The hemagglutinating activities of POL were metal ion-independent, and were stable within certain range of pH and temperature alterations. Moreover, POL showed remarkable anti-HSV-II activity towards Vero cells, cytotoxicity towards human melanoma A375 cells and induced apoptosis in a caspase-dependent manner.
Collapse
Affiliation(s)
- Yun Yang
- School of Life Sciences & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu, China
| | | | | | | | | | | | | |
Collapse
|
164
|
Wang TH, Kung YL, Lee MH, Su NW. N-acetyl-D-galactosamine-specific lectin isolated from the seeds of Carica papaya. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:4217-4224. [PMID: 21405109 DOI: 10.1021/jf104962g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
N-Acetyl-D-galactosamine (GalNAc)-specific lectins are of great interest because they have been reported to detect tumor-associated antigens of malignant cells. We isolated a novel lectin from Carica papaya seeds, named C. papaya lectin (CPL). Purification of the lectin involved ammonium sulfate fractionation and DEAE anion exchange and repeated gel filtration chromatography. Inhibition of CPL causing hemagglutination on human erythrocytes showed that the lectin shows specificity to GalNAc and lactose. Surface plasmon resonance further revealed that the lectin possesses high specificity toward GalNAc with a dissociation constant of 5.5 × 10(-9) M. The lectin is composed of 38- and 40-kDa subunits with a molecular mass of ∼804 kDa estimated by size-exclusion high-performance liquid chromatography. Incubation of CPL with Jurkat T cells showed significant induction of IL-2 cytokine, which suggests that CPL has potent immunomodulatory effects on immune cells.
Collapse
Affiliation(s)
- Teng-Hsu Wang
- Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan
| | | | | | | |
Collapse
|
165
|
Faheina-Martins GV, da Silveira AL, Ramos MV, Marques-Santos LF, Araujo DAM. Influence of fetal bovine serum on cytotoxic and genotoxic effects of lectins in MCF-7 cells. J Biochem Mol Toxicol 2011; 25:290-6. [DOI: 10.1002/jbt.20388] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 01/22/2011] [Accepted: 02/05/2011] [Indexed: 11/07/2022]
|
166
|
Mendonça-Franqueiro EDP, Alves-Paiva RDM, Sartim MA, Callejon DR, Paiva HH, Antonucci GA, Rosa JC, Cintra ACO, Franco JJ, Arantes EC, Dias-Baruffi M, Sampaio SV. Isolation, functional, and partial biochemical characterization of galatrox, an acidic lectin from Bothrops atrox snake venom. Acta Biochim Biophys Sin (Shanghai) 2011; 43:181-92. [PMID: 21297119 DOI: 10.1093/abbs/gmr003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Snake venom lectins have been studied in regard to their chemical structure and biological functions. However, little is known about lectins isolated from Bothrops atrox snake venom. We report here the isolation and partial functional and biochemical characterization of an acidic glycan-binding protein called galatrox from this venom. This lectin was purified by affinity chromatography using a lactosyl-sepharose column, and its homogeneity and molecular mass were evaluated by high-performance liquid chromatography, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry. The purified galatrox was homogeneous and characterized as an acidic protein (pI 5.2) with a monomeric and dimeric molecular mass of 16.2 and 32.5 kDa, respectively. Alignment of N-terminal and internal amino acid sequences of galatrox indicated that this protein exhibits high homology to other C-type snake venom lectins. Galatrox showed optimal hemagglutinating activity at a concentration of 100 μg/ml and this effect was drastically inhibited by lactose, ethylenediaminetetraacetic acid, and heating, which confirmed galatrox's lectin activity. While galatrox failed to induce the same level of paw edema or mast cell degranulation as B. atrox crude venom, galatrox did alter cellular viability, which suggested that galatrox might contribute to venom toxicity by directly inducing cell death.
Collapse
Affiliation(s)
- Elaine de Paula Mendonça-Franqueiro
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
167
|
Bovi M, Carrizo ME, Capaldi S, Perduca M, Chiarelli LR, Galliano M, Monaco HL. Structure of a lectin with antitumoral properties in king bolete (Boletus edulis) mushrooms. Glycobiology 2011; 21:1000-9. [DOI: 10.1093/glycob/cwr012] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
168
|
Zhao JK, Zhao YC, Li SH, Wang HX, Ng TB. Isolation and characterization of a novel thermostable lectin from the wild edible mushroom Agaricus arvensis. J Basic Microbiol 2011; 51:304-11. [DOI: 10.1002/jobm.201000267] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 09/16/2010] [Indexed: 11/10/2022]
|
169
|
Recombinant expression of Polygonatum cyrtonema lectin with anti-viral, apoptosis-inducing activities and preliminary crystallization. Process Biochem 2011. [DOI: 10.1016/j.procbio.2010.10.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
170
|
Novaes MRCG, Valadares F, Reis MC, Gonçalves DR, Menezes MDC. The effects of dietary supplementation with Agaricales mushrooms and other medicinal fungi on breast cancer: evidence-based medicine. Clinics (Sao Paulo) 2011; 66:2133-9. [PMID: 22189741 PMCID: PMC3226611 DOI: 10.1590/s1807-59322011001200021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 06/26/2011] [Accepted: 07/18/2011] [Indexed: 12/02/2022] Open
Abstract
Breast cancer is the most prevalent cancer in women. The most frequent therapeutic approaches for the treatment of this disease are chemotherapy, radiotherapy, hormone therapy, and surgery. Conventional pharmacological treatments cause many harmful side effects in patients. To improve the quality of life of breast cancer patients, researchers have sought alternative adjuvant treatment strategies. To assess the effects of fungi and other basidiomycetes Agaricales on the co-adjuvant treatment of breast cancer, we conducted a literary review of the available scientific evidence. We selected articles published in refereed journals from 1990 to 2011 in Medline, Lilacs, CAPES, Scielo, and Pubmed. Articles written in English, Spanish, and Portuguese were reviewed. We used the following descriptors: Agaricales, medicinal mushroom/fungus, breast cancer, dietary supplementation, synonyms, and related terms. The pharmacological effects of nutritional and medicinal mushrooms have been reported in several experimental clinical studies and have shown promising results in the adjuvant treatment of breast cancer. Adjuvant treatment with mushrooms is associated with improvements in the immunological and hematologic parameters of breast cancer, as well as in the quality of life of these patients. Randomized clinical studies are needed to elucidate the possible mechanisms of action and clinical benefits of these fungi with respect to survival time, disease progression, and metastasis in breast cancer.
Collapse
|
171
|
The role of nutraceutical proteins and peptides in apoptosis, angiogenesis, and metastasis of cancer cells. Cancer Metastasis Rev 2010; 29:511-28. [PMID: 20714786 DOI: 10.1007/s10555-010-9241-4] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The process of carcinogenesis is complex and not easy to eliminate. It includes the initial occurrence of genetic alterations which can lead to the inactivation of tumor-suppressor genes and further accumulation of genetic alterations during tumor progression. Looking for food and food components with biological properties, collectively called nutraceuticals, that can hinder such alterations and prevent the inactivation of tumor-suppressor genes is a very promising area for cancer prevention. Proteins and peptides are one group of nutraceuticals that show potential results in preventing the different stages of cancer including initiation, promotion, and progression. In this review, we summarized current knowledge on the use of nutraceutical proteins and peptides in cancer prevention and treatment. We focused on the role of plant protease inhibitors, lactoferrin and lactoferricin, shark cartilage, plant lectins, and lunasin in the apoptosis, angiogenesis, and metastasis of cancer cells. Also included are studies on bioavailability and clinical trials conducted on these promising proteins and peptides.
Collapse
|
172
|
Zhang ZT, Peng H, Li CY, Liu JJ, Zhou TT, Yan YF, Li Y, Bao JK. Polygonatum cyrtonema lectin induces murine fibrosarcoma L929 cell apoptosis via a caspase-dependent pathway as compared to Ophiopogon japonicus lectin. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 18:25-31. [PMID: 20655713 DOI: 10.1016/j.phymed.2010.05.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Galanthus nivalis agglutinin (GNA)-related lectin family, a superfamily of strictly mannose-binding specific lectins, has been well-known to possess several biological functions including apoptosis-inducing activities. However, the precise mechanisms of GNA-related lectins to induce apoptosis remains to be clarified. In this study, we showed that Polygonatum cyrtonema lectin (PCL) and Ophiopogon japonicus lectin (OJL), the two mannose-binding GNA-related lectins, could induce murine fibrosarcoma L929 cell apoptosis. In addition, we found that there was a close link between their sugar-binding and apoptosis-inducing activities. Interestingly, we further confirmed that the mechanism of lectin-induced apoptosis was a caspase-dependent pathway. Moreover, we found that the two lectins could amplify tumor necrosis factor α (TNFα)-induced apoptosis. Taken together, these findings would open a new perspective for GNA-related lectins as potential anti-tumor agents.
Collapse
Affiliation(s)
- Zi-ting Zhang
- School of Life Sciences, State Key Laboratory of Oral Diseases, Sichuan University, Wuhou District, Chengdu, China
| | | | | | | | | | | | | | | |
Collapse
|
173
|
Liu B, Wu JM, Li J, Liu JJ, Li WW, Li CY, Xu HL, Bao JK. Polygonatum cyrtonema lectin induces murine fibrosarcoma L929 cell apoptosis and autophagy via blocking Ras–Raf and PI3K–Akt signaling pathways. Biochimie 2010; 92:1934-8. [DOI: 10.1016/j.biochi.2010.08.009] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2010] [Revised: 08/02/2010] [Accepted: 08/03/2010] [Indexed: 10/19/2022]
|
174
|
Marzo F, Milagro FI, Urdaneta E, Barrenetxe J, Ibañez FC. Extrusion decreases the negative effects of kidney bean on enzyme and transport activities of the rat small intestine. J Anim Physiol Anim Nutr (Berl) 2010; 95:591-8. [DOI: 10.1111/j.1439-0396.2010.01088.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
175
|
Kuo WT, Ho YJ, Kuo SM, Lin FH, Tsai FJ, Chen YS, Dong GC, Yao CH. Induction of the mitochondria apoptosis pathway by phytohemagglutinin erythroagglutinating in human lung cancer cells. Ann Surg Oncol 2010; 18:848-56. [PMID: 20924795 DOI: 10.1245/s10434-010-1351-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Indexed: 01/22/2023]
Abstract
BACKGROUND Deregulation of apoptosis will influence the balance of cell proliferation and cell death, resulting in various fatal diseases that can include cancer. In prior research reports related to cancer therapy, phytohemagglutinin, a lectin extracted from red kidney beans, demonstrated the ability to inhibit the growth of human cancer cells. However, one of its isoforms, erythroagglutinating, has yet to be evaluated on its anticancer effects. METHODS PHA-E was used to induce apoptosis of A-549 lung cancer cells and the possible signal transduction pathway was elucidated, as measured by the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay, G6PD release assay, flow cytometry, and Western blot analysis. RESULTS PHA-E treatment caused a dose-dependent increase of cell growth inhibition and cytotoxicity on A-549 cells. In annexin V/propidium iodide [i.e., PI] and TUNEL (terminal deoxynucleotidyl transferase dUTP nick-end labeling)/PI assay, we found that the rate of apoptotic cells was raised as the concentration of PHA-E increased. Treatment of A-549 cells with PHA-E resulted in enhancing the release of cytochrome c, which thus activated an increase in caspase 9 and caspase 3, the upregulation of Bax and Bad, the downregulation of Bcl-2 and phosphorylated Bad, and finally the inhibition of the epidermal growth factor receptor and its downstream signal pathway PI3K/Akt and MEK/ERK. CONCLUSIONS PHA-E can induce growth inhibition and cytotoxicity of lung cancer cells, which is mediated through an activation of the mitochondria apoptosis pathway. These results suggest that PHA-E can be developed into a new therapeutic treatment that can be applied as an effective anti-lung cancer drug in the near future.
Collapse
Affiliation(s)
- Wei-Ting Kuo
- Graduate Institute of Clinical Medical Science, China Medical University, Taichung, Taiwan
| | | | | | | | | | | | | | | |
Collapse
|
176
|
Extraction and purification of a lectin from red kidney bean and preliminary immune function studies of the lectin and four Chinese herbal polysaccharides. J Biomed Biotechnol 2010; 2010:217342. [PMID: 20976304 PMCID: PMC2952811 DOI: 10.1155/2010/217342] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 05/09/2010] [Accepted: 07/20/2010] [Indexed: 12/16/2022] Open
Abstract
Reversed micelles were used to extract lectin from red kidney beans and factors affecting reverse micellar systems (pH value, ionic strength and extraction time) were studied. The optimal conditions were extraction at pH 4–6, back extraction at pH 9–11, ion strength at 0.15 M NaCl, extraction for 4–6 minutes and back extraction for 8 minutes. The reverse micellar system was compared with traditional extraction methods and demonstrated to be a time-saving method for the extraction of red kidney bean lectin. Mitogenic activity of the lectin was reasonably good compared with commercial phytohemagglutinin (extracted from Phaseolus vulgaris) Mitogenic properties of the lectin were enhanced when four Chinese herbal polysaccharides were applied concurrently, among which 50 μg/mL Astragalus mongholicus polysaccharides (APS) with 12.5 μg/mL red kidney bean lectin yielded the highest mitogenic activity and 100 mg/kg/bw APS with 12.5 mg/kg/bw red kidney bean lectin elevated mouse nonspecific immunity.
Collapse
|
177
|
Characterisation of a novel monomeric lectin (AML) from Astragalus membranaceus with anti-proliferative activity. Food Chem 2010. [DOI: 10.1016/j.foodchem.2010.03.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
178
|
Devappa RK, Makkar HPS, Becker K. Nutritional, biochemical, and pharmaceutical potential of proteins and peptides from jatropha: review. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:6543-6555. [PMID: 20465279 DOI: 10.1021/jf100003z] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Increased bioenergy consciousness and high demand for animal products have propelled the search for alternative resources that could meet the dual demands. Jatropha seeds have potential to fit these roles in view of their multipurpose uses, broad climatic adaptability features, and high oil and protein contents. During the past five years many large-scale cultivation projects have been undertaken to produce jatropha seed oil as a feedstock for the biodiesel industry. The present review aims at providing biological significance of jatropha proteins and peptides along with their nutritional and therapeutic applications. The nutritional qualities of the kernel meal and protein concentrates or isolates prepared from seed cake are presented, enabling their efficient use in animal nutrition. In addition, (a) biologically active proteins involved in plant protection, for example, aquaporin and betaine aldehyde dehydrogenase, which have roles in drought resistance, and beta-glucanase, which has antifungal activity, as well as those having pharmaceutical properties, and (b) cyclic peptides with various biological activities such as antiproliferative, immunomodulatory, antifungal, and antimalarial activity are discussed. It is expected that the information collated will open avenues for new applications of proteins present in jatropha plant, thereby contributing to enhance the financial viability and sustainability of a jatropha-based biodiesel industry.
Collapse
Affiliation(s)
- Rakshit K Devappa
- Institute for Animal Production in the Tropics and Subtropics, University of Hohenheim, 70593 Stuttgart, Germany
| | | | | |
Collapse
|
179
|
Yao Q, Wu CF, Luo P, Xiang XC, Liu JJ, Mou L, Bao JK. A new chitin-binding lectin from rhizome of Setcreasea purpurea with antifungal, antiviral and apoptosis-inducing activities. Process Biochem 2010; 45:1477-1485. [PMID: 32362765 PMCID: PMC7185743 DOI: 10.1016/j.procbio.2010.05.026] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2010] [Revised: 05/20/2010] [Accepted: 05/21/2010] [Indexed: 11/15/2022]
Abstract
A 48 kDa, chitin-binding lectin with antifungal, antiviral and apoptosis-inducing activities was isolated from the rhizomes of Setcreasea purpurea Boom, a member of family Commelinaceae. Setcreasea purpurea lectin (designated as SPL) is a homotetrameric protein consisting of 12031.9 Da subunits linked by non-covalent bonds as determined by SDS-PAGE, gel filtration and MS. The N-terminal 25 amino-acid sequence of SPL, NVLGRDAYCGSQNPGATCPGLCCSK was determined and homology analysis suggested that SPL belongs to the family of chitin-binding plant lectins composed of hevein domains. The lectin exhibited strong hemagglutinating activity towards rabbit erythrocytes at 0.95 μg/ml and the activity could be reversed exclusively by chitin hydrolysate (oligomers of GlcNAc). Its hemagglutinating activity was stable in pH range of 2.0-9.0 and it showed excellent thermal tolerance. SPL showed antifungal activity against Rhizoctonia solani, Sclerotinia sclerotiorum, Penicillium italicum and Helminthosporiun maydis. It also exhibited inhibitory effect on HIV-1 (IIIB) and HIV-2 (ROD), with an EC50 of 13.8 ± 1.3 and 57.1 ± 15 μg/ml, respectively. Subsequently, MTT method, cell morphological analysis and LDH activity-based cytotoxicity assays demonstrated that SPL was highly cytotoxic to CNE-1 cells and induced apoptosis in a dose-dependent manner. Moreover, due to the caspase inhibitors analyses, caspase was also found to play an important role in the potential apoptotic mechanism of SPL.
Collapse
Affiliation(s)
- Qing Yao
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Chuan-Fang Wu
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Ping Luo
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Xiao-Cong Xiang
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Jun-Jie Liu
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Lin Mou
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | - Jin-Ku Bao
- School of Life Science & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| |
Collapse
|
180
|
Mehta S, Chhetra R, Srinivasan R, Sharma SC, Behera D, Ghosh S. Detection of disease specific sialoglycoconjugate specific antibodies in bronchoalveolar lavage fluid of non-small cell lung cancer patients. Glycoconj J 2010; 27:491-500. [DOI: 10.1007/s10719-010-9294-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2010] [Revised: 03/30/2010] [Accepted: 04/28/2010] [Indexed: 01/22/2023]
|
181
|
Campos-Vega R, Loarca-Piña G, Oomah BD. Minor components of pulses and their potential impact on human health. Food Res Int 2010. [DOI: 10.1016/j.foodres.2009.09.004] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
182
|
|
183
|
Vergara-Castañeda HA, Guevara-González RG, Ramos-Gómez M, Reynoso-Camacho R, Guzmán-Maldonado H, Feregrino-Pérez AA, Oomah BD, Loarca-Piña G. Non-digestible fraction of cooked bean (Phaseolus vulgaris L.) cultivar Bayo Madero suppresses colonic aberrant crypt foci in azoxymethane-induced rats. Food Funct 2010; 1:294-300. [DOI: 10.1039/c0fo00130a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
184
|
Affiliation(s)
- Mary Ellen Camire
- a Department of Food Science & Human Nutrition , University of Maine , USA
| | - Stan Kubow
- b School of Dietetics & Human Nutrition , McGill University , QC, Canada
| | | |
Collapse
|
185
|
Mendieta JR, Fimognari C, Daleo GR, Hrelia P, Guevara MG. Cytotoxic effect of potato aspartic proteases (StAPs) on Jurkat T cells. Fitoterapia 2009; 81:329-35. [PMID: 19825400 DOI: 10.1016/j.fitote.2009.10.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2009] [Revised: 09/21/2009] [Accepted: 10/05/2009] [Indexed: 11/19/2022]
Abstract
StAPs are potato aspartic proteases with cytotoxic activity against plant pathogens and spermatozoa. StAPs cytotoxic activity is selective, since these proteins do not exert toxic effect on plant cells and erythrocytes. In this work, we investigated the capacity of StAPs to exert cytotoxicity on human leukaemia cells. Obtained results show that StAPs induce apoptosis on Jurkat T cells after a short time of incubation in a dose-dependent manner. However, no significative effect on the T lymphocytes viability was observed at all StAPs incubation times and concentrations tested. These results suggest that StAPs can be conceptually promising leads for cancer therapy.
Collapse
Affiliation(s)
- Julieta R Mendieta
- Institute of Biological Research, University of Mar del Plata, Mar del Plata, Argentina
| | | | | | | | | |
Collapse
|
186
|
Friedman M, Levin CE, Lee SU, Kim HJ, Lee IS, Byun JO, Kozukue N. Tomatine-containing green tomato extracts inhibit growth of human breast, colon, liver, and stomach cancer cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:5727-33. [PMID: 19514731 DOI: 10.1021/jf900364j] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Tomato plants ( Lycopersicon esculentum ) synthesize the glycoalkaloids dehydrotomatine and alpha-tomatine, possibly as a defense against bacteria, fungi, viruses, and insects. Six green and three red tomato extracts were investigated for their ability to induce cell death in human cancer and normal cells using a microculture tetrazolium (MTT) assay. Compared to untreated controls, the high-tomatine green tomato extracts strongly inhibited the following human cancer cell lines: breast (MCF-7), colon (HT-29), gastric (AGS), and hepatoma (liver) (HepG2), as well as normal human liver cells (Chang). There was little inhibition of the cells by the three low-tomatine red tomato extracts. Cell death induced by the pure glycoalkaloids dehydrotomatine and alpha-tomatine isolated from green tomatoes and characterized by HPLC, GC, and GC-MS, as well as their respective aglycones tomatidenol and tomatidine, was also evaluated. alpha-Tomatine was highly effective in inhibiting all of the cell lines. Dehydrotomatine, tomatidenol, and tomatidine had little, if any, effect on cell inhibition. The results show that the susceptibility to destruction varies with the nature of the alkaloid and plant extract and the type of cancer cell. These findings extend related observations on the anticarcinogenic potential of glycoalkaloids and suggest that consumers may benefit by eating not only high-lycopene red tomatoes but also green tomatoes containing glycoalkaloids. Possible mechanisms of the anticarcinogenic and other beneficial effects and the significance of the cited observations for breeding improved tomatoes and for the human diet are discussed.
Collapse
Affiliation(s)
- Mendel Friedman
- US Department of Agriculture, Agricultural Research Service, Western Regional Research Center, Albany, California 94710, USA.
| | | | | | | | | | | | | |
Collapse
|
187
|
Yan Q, Li Y, Jiang Z, Sun Y, Zhu L, Ding Z. Antiproliferation and apoptosis of human tumor cell lines by a lectin (AMML) of Astragalus mongholicus. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:586-593. [PMID: 19403285 DOI: 10.1016/j.phymed.2008.12.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Accepted: 12/19/2008] [Indexed: 05/27/2023]
Abstract
A lectin (AMML) from the roots of Astragalus mongholicus was extracted and purified by affinity chromatographic technique. Human cervical carcinoma cell line (HeLa), human osteoblast-like cell line (MG63) and human leukemia cell line (K562) were used to check the effects of AMML on cell proliferation, apoptosis and cell cycle. Maximum growth inhibition (92%) was observed with HeLa cells, followed by K562 cells (84%) and MG63 (48%) cells. Morphological observation showed that AMML-treated HeLa cells displayed outstanding apoptosis characteristics, such as nuclear fragmentation and appearance of membrane-enclosed apoptotic bodies. The apoptosis of HeLa cells was confirmed by flow cytometry using Annexin V/FITC and propidium iodide (PI) staining technique. For the first time we also report a significant cell cycle arrest at S phase of HeLa cells by AMML. Therefore, the present investigation may lead to the possible therapeutic use of Astragalus mongholicus lectin.
Collapse
Affiliation(s)
- Qiaojuan Yan
- Bioresource Utilization Laboratory, College of Engineering, China Agricultural University, Beijing 100083, China
| | | | | | | | | | | |
Collapse
|
188
|
Liu B, Peng H, Yao Q, Li J, Van Damme E, Balzarini J, Bao JK. Bioinformatics analyses of the mannose-binding lectins from Polygonatum cyrtonema, Ophiopogon japonicus and Liparis noversa with antiproliferative and apoptosis-inducing activities. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:601-608. [PMID: 19200699 DOI: 10.1016/j.phymed.2008.12.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2008] [Accepted: 12/10/2008] [Indexed: 05/27/2023]
Abstract
In the present study, three typical monocot mannose-binding lectins (e.g., Polygonatum cyrtonema lectin [PCL], Ophiopogon japonicus lectin [OJL] and Liparis noversa lectin [LNL]), were reported to possess a similar tertiary structure with three mannose-binding sites and a close phylogenetic relationship. Subsequently, these lectins were found to bear remarkable inhibitory effects on the growth of MCF-7 cells. Further experiments confirmed that there is a link among the hemagglutinating activity, antiproliferative activity and mannose-binding activity. In addition, these lectins were shown to induce MCF-7 cell apoptosis and caspase was found to be involved in this apoptotic pathway. In conclusion, these findings demonstrate that the different antiproliferative effects may be due to the conserved motifs of mannose-binding sites. Furthermore, our results demonstrate that these lectins induce apoptosis in MCF-7 cells via a caspase-dependent pathway.
Collapse
Affiliation(s)
- Bo Liu
- College of Life Sciences & State Key Laboratory of Oral Diseases, Sichuan University, Chengdu 610064, China
| | | | | | | | | | | | | |
Collapse
|
189
|
Liu B, Bian HJ, Bao JK. Plant lectins: potential antineoplastic drugs from bench to clinic. Cancer Lett 2009; 287:1-12. [PMID: 19487073 DOI: 10.1016/j.canlet.2009.05.013] [Citation(s) in RCA: 171] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2008] [Revised: 05/06/2009] [Accepted: 05/10/2009] [Indexed: 01/12/2023]
Abstract
Plant lectins, carbohydrate-binding proteins distributed widely in a variety of plant species, have drawn a rising attention for cancer biologists due to their remarkable anti-tumour properties. In this review, we present a brief outline of the up-to-date advances of plant lectins in elucidating their complex anti-cancer mechanisms implicated in apoptosis and autophagy. In addition, we further discuss the pre-clinical and clinical studies of plant lectins for their potential therapeutic applications. In conclusion, these inspiring findings would open a new perspective for plant lectins as potential antineoplastic drugs from bench to clinic.
Collapse
Affiliation(s)
- Bo Liu
- School of Life Sciences, Sichuan University, Chengdu 610064, China
| | | | | |
Collapse
|
190
|
Abstract
BACKGROUND Limited accessibility of drugs to the tumor tissues, the requirement of high doses, intolerable cytotoxicity, the development of multiple drug resistance and non-specific targeting are obstacles to the clinical use of cancer drugs and cancer therapy. OBJECTIVE Drug delivery through carrier systems to cancerous tissue is no longer simply wrapping up cancer drugs in a new formulation for different routes of delivery, rather the focus is on targeted cancer therapy. METHODS This review summarizes the exploitation of drug-loaded nanocarrier conjugates with various targeting moieties for the delivery and targeting of anticancer drugs and describes the current status of and challenges in the field of nanocarrier-aided drug delivery and drug targeting. CONCLUSION The discovery of targeting ligand to cancer cells and the development of ligand-targeted therapy will help us to improve therapeutic efficacy and reduce side effects. Unlike other forms of therapy, it will allow us to maintain quality of life for patients, while efficiently attacking the cancer tissue. It indicates that ligands have a pivotal role in cancer cell targeting.
Collapse
Affiliation(s)
- Manasi Das
- Laboratory for Nanomedicine, Institute of Life Sciences, Nalco Square, Chandrasekharpur, Bhubaneswar, Orissa, India
| | | | | |
Collapse
|
191
|
Sheu F, Chien PJ, Hsieh KY, Chin KL, Huang WT, Tsao CY, Chen YF, Cheng HC, Chang HH. Purification, cloning, and functional characterization of a novel immunomodulatory protein from Antrodia camphorata (bitter mushroom) that exhibits TLR2-dependent NF-κB activation and M1 polarization within murine macrophages. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2009; 57:4130-4141. [PMID: 19371137 DOI: 10.1021/jf900469a] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A new immunomodulatory protein, designated ACA, was purified from the mycelium extract of Antrodia camphorata , a well-known folk medicine bitter mushroom in Taiwan, and N-terminally sequenced. By taking advantage of its N-terminal amino acid sequence, the full-length ACA gene was cloned using rapid amplification of cDNA ends (RACE) approach. This gene encodes a 136 amino acid protein that is homologous to the phytotoxic proteins from fungi. On the basis of the data of N-terminal sequencing and N-glycosidase F treatment, the native ACA was confirmed to be a glycoprotein. The similarity in activation of TLR4-deficient macrophages by both the native ACA and recombinant ACA (rACA) suggested that the glycosyl group(s) of the native ACA was insignificant in macrophage activation. Moreover, the failure of rACA to induce TLR2-deficient macrophages and to activate the RAW 264.7 macrophages transfected with the dominate-negative MyD88 (dnMyD88) indicated that the ACA-mediated macrophage activation was TLR2/MyD88 dependent. Microarray assay of the ACA-activated NFκB-related gene expression showed that rACA demonstrated a LPS-mimetic proinflammatory response toward RAW 264.7 macrophages. Furthermore, rACA enhanced phagocytosis activity and CD86 (B7-2) expression as well as induced TNF-α and IL-1β production within murine peritoneal macrophages. A time-dependent induction of mRNA expression of cytokines TNF-α, IL-1β, IL-6, and IL-12 as well as chemokines CCL3, CCL4, CCL5, and CCL10, but not IL-10, CCL17, CCL22, and CCL24, was observed after the ACA treatment of the macrophages. These results proposed that ACA exhibited M1 polarization and differentiation in macrophages. Thus, ACA is an important immunomodulatory protein of A. camphorata.
Collapse
Affiliation(s)
- Fuu Sheu
- Research Center of Food and Biomolecules, Chinese Culture University, Taiwan, Republic of China.
| | | | | | | | | | | | | | | | | |
Collapse
|
192
|
Faris MAIE, Takruri HR, Shomaf MS, Bustanji YK. Chemopreventive effect of raw and cooked lentils (Lens culinaris L) and soybeans (Glycine max) against azoxymethane-induced aberrant crypt foci. Nutr Res 2009; 29:355-62. [PMID: 19555818 DOI: 10.1016/j.nutres.2009.05.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2009] [Revised: 05/09/2009] [Accepted: 05/13/2009] [Indexed: 11/24/2022]
Abstract
Although lentils (Lens culinaris L) contain several bioactive compounds that have been linked to the prevention of cancer, the in vivo chemopreventive ability of lentils against chemically induced colorectal cancer has not been examined. Our present study examined the hypothesis that lentils could suppress the early carcinogenesis in vivo by virtue of their bioactive micro- and macroconstituents and that culinary thermal treatment could affect their chemopreventive potential. To accomplish this goal, we used raw whole lentils (RWL), raw split lentils (RSL), cooked whole lentils (CWL), and cooked split lentils (CSL). Raw soybeans (RSB; Glycine max) were used for the purpose of comparison with a well-studied chemopreventive agent. Sixty weanling Fischer 344 male rats, 4 to 5 weeks of age, were randomly assigned to 6 groups (10 rats/group): the control group (C) received AIN-93G diet, and treatment leguminous groups of RWL, CWL, RSL, CSL, and RSB received the treatment diets containing AIN-93G+5% of the above-mentioned legumes. After acclimatization for 1 week (at 5th to 6th week of age), all animals were put on the control and treatment diets separately for 5 weeks (from 6th to 11th week of age). At the end of the 5th week of feeding (end of 11th week of age), all rats received 2 subcutaneous injections of azoxymethane carcinogen at 15 mg/kg rat body weight per dose once a week for 2 consecutive weeks. After 17 weeks of the last azoxymethane injection (from 12th to 29th week of age), all rats were euthanized. Chemopreventive ability was assessed using colonic aberrant crypt foci and activity of hepatic glutathione-S-transferases. Significant reductions (P < .05) were found in total aberrant crypt foci number (mean +/- SEM) for RSB (27.33 +/- 4.32), CWL (33.44 +/- 4.56), and RSL (37.00 +/- 6.02) in comparison with the C group (58.33 +/- 8.46). Hepatic glutathione-S-transferases activities increased significantly (P < .05) in rats fed all treatment diets (from 51.38 +/- 3.66 to 67.94 +/- 2.01 micromol mg(-1) min(-1)) when compared with control (C) diet (26.13 +/- 1.01 micromol mg(-1) min(-1)). Our findings indicate that consumption of lentils might be protective against colon carcinogenesis and that hydrothermal treatment resulted in an improvement in the chemopreventive potential for the whole lentils.
Collapse
Affiliation(s)
- Mo'ez Al-Islam E Faris
- Department of Nutrition, Faculty of Pharmacy and Medical Sciences, Petra University, Amman, Jordan.
| | | | | | | |
Collapse
|
193
|
|
194
|
Bhutia SK, Mallick SK, Maiti S, Maiti TK. Inhibitory effect of Abrus abrin-derived peptide fraction against Dalton's lymphoma ascites model. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2009; 16:377-385. [PMID: 18706794 DOI: 10.1016/j.phymed.2008.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Revised: 06/02/2008] [Accepted: 07/03/2008] [Indexed: 05/26/2023]
Abstract
Peptides derived from larger molecules that are important modulators in cancer regression are becoming leads for development of therapeutic drugs. It has been reported that Abrus abrin, isolated from the seeds of Abrus precatorius, showed in vitro and in vivo antitumor properties by the induction of apoptosis. The present study was designed to evaluate the in vivo therapeutic effectiveness of abrin-derived peptide (ABP) fraction in Dalton's lymphoma (DL) mice model. The lethal dose (LD(50)) of ABP was found to be 2.25 mg/kg body weight and further the acute toxicity was determined with sublethal doses in normal mice. The acute toxicity like body weight, peripheral blood cell count, lympho-hematological and biochemical parameters remained unaffected till 200 microg/kg body weight of ABP. The sublethal doses of ABP showed very significant growth inhibitory properties in vivo DL mice model. There were 24%, 70.8% and 89.7% reductions in DL cell survival in 25, 50 and 100 microg/kg body weight of ABP, respectively. Analysis of the growth inhibitory mechanism in DL cells revealed nuclear fragmentation, and condensation with the appearance of the sub-G(0)/G(1) peak is indicative of apoptosis. Further, the Western blotting showed that apoptosis was mediated by the reduction in the ratio of Bcl-2 and Bax protein expression, and activation of caspase-3 through the release of cytochrome c in DL cells. Kaplan-Meier survival analysis showed an effective antitumor response (104.6 increase in life span (ILS) %) with a dose of 100 microg/kg body weight.
Collapse
Affiliation(s)
- Sujit K Bhutia
- Department of Biotechnology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | | | | | | |
Collapse
|
195
|
Liu B, Cheng Y, Zhang B, Bian HJ, Bao JK. Polygonatum cyrtonema lectin induces apoptosis and autophagy in human melanoma A375 cells through a mitochondria-mediated ROS–p38–p53 pathway. Cancer Lett 2009; 275:54-60. [DOI: 10.1016/j.canlet.2008.09.042] [Citation(s) in RCA: 145] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2008] [Revised: 09/26/2008] [Accepted: 09/30/2008] [Indexed: 10/21/2022]
|
196
|
Liu B, Li CY, Bian HJ, Min MW, Chen LF, Bao JK. Antiproliferative activity and apoptosis-inducing mechanism of Concanavalin A on human melanoma A375 cells. Arch Biochem Biophys 2009; 482:1-6. [DOI: 10.1016/j.abb.2008.12.003] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 11/27/2008] [Accepted: 12/09/2008] [Indexed: 11/27/2022]
|
197
|
Lei HY, Chang CP. Lectin of Concanavalin A as an anti-hepatoma therapeutic agent. J Biomed Sci 2009; 16:10. [PMID: 19272170 PMCID: PMC2644972 DOI: 10.1186/1423-0127-16-10] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Accepted: 01/19/2009] [Indexed: 12/14/2022] Open
Abstract
Liver cancer is the predominant cause of cancer mortality in males of Southern China and Taiwan. The current therapy is not satisfactory, and more effective treatments are needed. In the search for new therapies for liver tumor, we found that Concanavalin A (Con A), a lectin from Jack bean seeds, can have a potent anti-hepatoma effect. Con A after binding to the mannose moiety on the cell membrane glycoprotein is internalized preferentially to the mitochondria. An autophagy is triggered which leads to cell death. Con A as a T cell mitogen subsequently activates the immune response in the liver and results in the eradication of the tumor in a murine in situ hepatoma model. The liver tumor nodule formation is inhibited by the CD8+ T cells, and a tumor antigen-specific immune memory is established during the hepatic inflammation. The dual properties (autophagic cytotoxicity and immunomodulation) via the specific carbohydrate binding let Con A exert a potent anti-hepatoma therapeutic effect. The novel mechanism of the Con A anti-hepatoma effect is discussed. The prototype of Con with an anti-hepatoma activity gives support to the search for other natural lectins as anti-cancer compounds.
Collapse
Affiliation(s)
- Huan-Yao Lei
- Department of Microbiology & Immunology, and Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | | |
Collapse
|
198
|
Sulová Z, Mislovičová D, Gibalová L, Vajčnerová Z, Poláková E, Uhrík B, Tylková L, Kovárová A, Sedlák J, Breier A. Vincristine-Induced Overexpression of P-Glycoprotein in L1210 Cells Is Associated with Remodeling of Cell Surface Saccharides. J Proteome Res 2008; 8:513-20. [DOI: 10.1021/pr8007094] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zdenka Sulová
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Danica Mislovičová
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Lenka Gibalová
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Zuzana Vajčnerová
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Eva Poláková
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Branislav Uhrík
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Lucia Tylková
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Annamária Kovárová
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Ján Sedlák
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| | - Albert Breier
- Institute of Molecular Physiology and Genetics, Centre of Excellence of the Slovak Research and Development Agency, BIOMEMBRANES2008, Slovak Academy of Sciences, Vlárska 5 83334, Bratislava, Slovakia, Institute of Chemistry, Center for Glycomics, Slovak Academy of Sciences, Dúbravská cesta 9, 84538, Bratislava, Slovakia, and Cancer Research Institute, Slovak Academy of Sciences, Vlárska 7, 833 91, Bratislava, Slovakia
| |
Collapse
|
199
|
Isanga J, Zhang GN. Soybean Bioactive Components and their Implications to Health—A Review. FOOD REVIEWS INTERNATIONAL 2008. [DOI: 10.1080/87559120801926351] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Joel Isanga
- a School of Food Science and Technology , Jiangnan University, Key Laboratory of Food Science and Safety, Ministry of Education , Wuxi , Jiangsu Province , P.R. China
- b Faculty of Science, Department of Biochemistry , Makerere University , Kampala , Uganda
| | - Guo-Nong Zhang
- a School of Food Science and Technology , Jiangnan University, Key Laboratory of Food Science and Safety, Ministry of Education , Wuxi , Jiangsu Province , P.R. China
| |
Collapse
|
200
|
Shimizu-Ibuka A, Nakai Y, Nakamori K, Morita Y, Nakajima KI, Kadota K, Watanabe H, Okubo S, Terada T, Asakura T, Misaka T, Abe K. Biochemical and genomic analysis of neoculin compared to monocot mannose-binding lectins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:5338-5344. [PMID: 18537258 DOI: 10.1021/jf800214b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Neoculin occurring in an edible tropical fruit is a heterodimeric protein which has both sweetness and a taste-modifying activity that converts sourness to sweetness. Both the primary and the overall tertiary structures of neoculin resemble those of monocot mannose-binding lectins. This study investigated differences in biochemical properties between neoculin and the lectins. Structural comparison between the mannose-binding sites of lectins and the corresponding regions of neoculin showed that there is at least one amino acid substitution at each site in neoculin, suggesting a reason for the lack of its mannose-binding ability. This was consistent with hemagglutination assay data demonstrating that neoculin had no detectable agglutinin activity. DNA microarray analysis indicated that neoculin had no significant influence on gene expression in Caco-2 cell, whereas kidney bean lectin (Phaseolus vulgaris agglutinin) greatly influenced various gene expressions. These data strongly suggest that neoculin has no lectin-like properties, encouraging its practical use in the food industry.
Collapse
Affiliation(s)
- Akiko Shimizu-Ibuka
- Department of Applied Biological Chemistry and Agricultural Bioinformatics Research Unit, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|