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Alves de Vasconcelos M, Sena da Penha S, Castro E Silva VR, Leite TA, Bezerra de Souza E, Silva Souza BW, Teixeira EH, Coelho da Silva AL. Fruticulosin: A novel type 2 ribosome-inactivating protein from Abrus fruticulosus seeds that exhibits toxic and antileishmanial activity. Arch Biochem Biophys 2018; 658:46-53. [PMID: 30222952 DOI: 10.1016/j.abb.2018.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/31/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022]
Abstract
Plant ribosome-inactivating proteins (RIPs) are a family of toxins that inhibit protein synthesis. In this study, we have isolated a novel type 2 ribosome-inactivating protein (RIP) present in seeds of the Abrus fruticulosus, named of fruticulosin. Fruticulosin, shows characteristics common to other type 2 RIPs, as specificity by galactosides (d-galactose, N-acetyl-d-galactosamine, and d-lactose), mass of approximately 60 kDa and presence of the of disulfide bonds. The N-terminal amino acid sequence (26 residues) of A-chain fruticulosin, determined by Edman degradation, revealed high similarity of the A-chain with those of other type 2 RIPs. The secondary structure of fruticulosin was analysed by circular dichroism, which showed that fruticulosin contains α-helices (22.3%), β-sheets (43.5%), and random coils and corners (34.2%). Furthermore, fruticulosin showed high toxicity in Artemia sp. (3.12 μg/mL), inhibited in vitro protein synthesis by a cell-free system and showed RNA N-glycosidase activity. Fruticulosin presented biological activities such as agglutination and antileishmanial activity on promastigote forms of Leishmania major.
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Affiliation(s)
- Mayron Alves de Vasconcelos
- Laboratório Integrado de Biomoléculas - LIBS, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, 60430-160, Fortaleza, Ceará, Brazil; Departamento de Ciências Biológicas, Faculdade de Ciências Exatas e Naturais, Universidade do Estado do Rio Grande do Norte, 59625-620, Mossoró, Rio Grande do Norte, Brazil
| | - Samara Sena da Penha
- Laboratório de Biotecnologia Molecular (LabBMol), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60455-970, Fortaleza, Ceará, Brazil
| | - Vinícius Rodrigues Castro E Silva
- Laboratório de Biotecnologia Molecular (LabBMol), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60455-970, Fortaleza, Ceará, Brazil
| | - Talita Abrante Leite
- Laboratório de Biotecnologia Molecular (LabBMol), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60455-970, Fortaleza, Ceará, Brazil
| | - Elnatan Bezerra de Souza
- Curso de Ciências Biológicas, Universidade Estadual Vale do Acaraú, 62040-370, Sobral, Ceará, Brazil
| | | | - Edson Holanda Teixeira
- Laboratório Integrado de Biomoléculas - LIBS, Departamento de Patologia e Medicina Legal, Universidade Federal do Ceará, 60430-160, Fortaleza, Ceará, Brazil
| | - André Luis Coelho da Silva
- Laboratório de Biotecnologia Molecular (LabBMol), Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, 60455-970, Fortaleza, Ceará, Brazil.
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Dyer PD, Kotha AK, Gollings AS, Shorter SA, Shepherd TR, Pettit MW, Alexander BD, Getti GT, El-Daher S, Baillie L, Richardson SC. An in vitro evaluation of epigallocatechin gallate (eGCG) as a biocompatible inhibitor of ricin toxin. Biochim Biophys Acta Gen Subj 2016; 1860:1541-50. [DOI: 10.1016/j.bbagen.2016.03.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 03/10/2016] [Accepted: 03/20/2016] [Indexed: 10/22/2022]
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Garcia-Castillo MD, Tran T, Bobard A, Renard HF, Rathjen SJ, Dransart E, Stechmann B, Lamaze C, Lord M, Cintrat JC, Enninga J, Tartour E, Johannes L. Retrograde transport is not required for cytosolic translocation of the B-subunit of Shiga toxin. J Cell Sci 2015; 128:2373-87. [PMID: 25977475 DOI: 10.1242/jcs.169383] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 05/07/2015] [Indexed: 01/13/2023] Open
Abstract
Antigen-presenting cells have the remarkable capacity to transfer exogenous antigens to the cytosol for processing by proteasomes and subsequent presentation on major histocompatibility complex class-I (MHC-I) molecules, a process termed cross-presentation. This is the target of biomedical approaches that aim to trigger a therapeutic immune response. The receptor-binding B-subunit of Shiga toxin (STxB) has been developed as an antigen delivery tool for such immunotherapy applications. In this study, we have analyzed pathways and trafficking factors that are involved in this process. A covalent conjugate between STxB and saporin was generated to quantitatively sample the membrane translocation step to the cytosol in differentiated monocyte-derived THP-1 cells. We have found that retrograde trafficking to the Golgi complex was not required for STxB-saporin translocation to the cytosol or for STxB-dependent antigen cross-presentation. Depletion of endosomal Rab7 inhibited, and lowering membrane cholesterol levels favored STxB-saporin translocation. Interestingly, experiments with reducible and non-reducible linker-arm-STxB conjugates led to the conclusion that after translocation, STxB remains associated with the cytosolic membrane leaflet. In summary, we report new facets of the endosomal escape process bearing relevance to antigen cross-presentation.
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Affiliation(s)
- Maria Daniela Garcia-Castillo
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
| | - Thi Tran
- INSERM U970, PARCC Université Paris Descartes Sorbonne Paris Cité, Paris 75006, France Hôpital Européen Georges-Pompidou, AP-HP, Service d'Immunologie Biologique, Paris Cedex 15 75908, France
| | - Alexandre Bobard
- Dynamique des Interactions Hôte Pathogène, Institut Pasteur, Paris Cedex 15 75724, France
| | - Henri-François Renard
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
| | - Stefan J Rathjen
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
| | - Estelle Dransart
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
| | - Bahne Stechmann
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
| | - Christophe Lamaze
- CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France Institut Curie - Centre de Recherche, Membrane Dynamics and Mechanics of Intracellular Signaling Group, 26 rue d'Ulm, Paris Cedex 05 75248, France
| | - Mike Lord
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
| | | | - Jost Enninga
- Dynamique des Interactions Hôte Pathogène, Institut Pasteur, Paris Cedex 15 75724, France
| | - Eric Tartour
- INSERM U970, PARCC Université Paris Descartes Sorbonne Paris Cité, Paris 75006, France Hôpital Européen Georges-Pompidou, AP-HP, Service d'Immunologie Biologique, Paris Cedex 15 75908, France
| | - Ludger Johannes
- Institut Curie, PSL Research University, Endocytic Trafficking and Therapeutic Delivery Group, 26 rue d'Ulm, Paris Cedex 05 75248, France CNRS UMR3666, Paris 75005, France INSERM U1143, Paris 75005, France
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Pauk VV, Tuktarova IA, Nasibullin TR, Zueva LP, Adel'guzhina AK, Khusnutdinova EK, Mustafina OE. [Paraoxonase 1 gene polymorphism 192Q/R in old men and long-livers from Tatars ethnic group]. Mol Biol 2007; 41:601-7. [PMID: 17936978 DOI: 10.1134/s0026893307040127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Comparison in genotype and allele frequencies of people groups of younger (from 1 till 20 years), middle (21-55 years), elderly (56-74 years), senile (75-89 years) age and long-livers (90-109 years) have been performed (only 1116 person) with the purpose of analysis of molecular-genetic bases of ageing and longevity of the person. Allele variants of PON1 gene have been identified by polymerase chain reaction in a combination with restriction analysis. In the general sample of Tatars genotypes PON1*Q/*Q, PON1*Q/*R and PON1*R/*R are revealed with frequencies of 46.15, 44.35 and 9.5%, alleles PON1*Q and PON1*R are found with frequencies of 68.32 and 31.68% accordingly. Statistically significant distinctions on frequencies of genotypes and alleles between separate age groups are found. It has appeared, that frequency of PON1*R allele (28.46%) is lowered among old men in comparison with those among persons of younger age (37.42%, P = 0.009). However essentially above in group of long-livers, than in group of old men, frequencies allele PON1*R (P = 0.005) and genotype PON1*R/*R (P = 0.01).
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Falguières T, Römer W, Amessou M, Afonso C, Wolf C, Tabet JC, Lamaze C, Johannes L. Functionally different pools of Shiga toxin receptor, globotriaosyl ceramide, in HeLa cells. FEBS J 2006; 273:5205-18. [PMID: 17059464 DOI: 10.1111/j.1742-4658.2006.05516.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Many studies have investigated the intracellular trafficking of Shiga toxin, but very little is known about the underlying dynamics of its cellular receptor, the glycosphingolipid globotriaosyl ceramide. In this study, we show that globotriaosyl ceramide is required not only for Shiga toxin binding to cells, but also for its intracellular trafficking. Shiga toxin induces globotriaosyl ceramide recruitment to detergent-resistant membranes, and subsequent internalization of the lipid. The globotriaosyl ceramide pool at the plasma membrane is then replenished from internal stores. Whereas endocytosis is not affected in the recovery condition, retrograde transport of Shiga toxin to the Golgi apparatus and the endoplasmic reticulum is strongly inhibited. This effect is specific, as cholera toxin trafficking on GM(1) and protein biosynthesis are not impaired. The differential behavior of both toxins is also paralleled by the selective loss of Shiga toxin association with detergent-resistant membranes in the recovery condition, and comparison of the molecular species composition of plasma membrane globotriaosyl ceramide indicates subtle changes in favor of unsaturated fatty acids. In conclusion, this study demonstrates the dynamic behavior of globotriaosyl ceramide at the plasma membrane and suggests that globotriaosyl ceramide-specific determinants, possibly its molecular species composition, are selectively required for efficient retrograde sorting on endosomes, but not for endocytosis.
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Affiliation(s)
- Thomas Falguières
- Laboratoire Trafic et Signalisation, Unité Mixte de Recherche 144, Institut Curie/CNRS, Paris, France
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Smith DC, Sillence DJ, Falguières T, Jarvis RM, Johannes L, Lord JM, Platt FM, Roberts LM. The association of Shiga-like toxin with detergent-resistant membranes is modulated by glucosylceramide and is an essential requirement in the endoplasmic reticulum for a cytotoxic effect. Mol Biol Cell 2005; 17:1375-87. [PMID: 16381816 PMCID: PMC1382325 DOI: 10.1091/mbc.e05-11-1035] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Receptor-mediated internalization to the endoplasmic reticulum (ER) and subsequent retro-translocation to the cytosol are essential sequential processes required for the productive intoxication of susceptible mammalian cells by Shiga-like toxin-1 (SLTx). Recently, it has been proposed that the observed association of certain ER-directed toxins and viruses with detergent-resistant membranes (DRM) may provide a general mechanism for their retrograde transport to endoplasmic reticulum (ER). Here, we show that DRM recruitment of SLTx bound to its globotriosylceramide (Gb(3)) receptor is mediated by the availability of other glycosphingolipids. Reduction in glucosylceramide (GlcCer) levels led to complete protection against SLTx and a reduced cell surface association of bound toxin with DRM. This reduction still allowed efficient binding and transport of the toxin to the ER. However, toxin sequestration within DRM of the ER was abolished under reduced GlcCer conditions, suggesting that an association of toxin with lipid microdomains or rafts in the ER (where these are defined by detergent insolubility) is essential for a later step leading to or involving retro-translocation of SLTx across the ER membrane. In support of this, we show that a number of ER residents, proteins intimately involved in the process of ER dislocation of misfolded proteins, are present in DRM.
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Affiliation(s)
- Daniel C Smith
- Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK
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Silva ALC, Goto LS, Dinarte AR, Hansen D, Moreira RA, Beltramini LM, Araújo APU. Pulchellin, a highly toxic type 2 ribosome-inactivating protein from Abrus pulchellus. Cloning heterologous expression of A-chain and structural studies. FEBS J 2005; 272:1201-10. [PMID: 15720394 DOI: 10.1111/j.1742-4658.2005.04545.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pulchellin is a type 2 ribosome-inactivating protein isolated from seeds of the Abrus pulchellus tenuiflorus plant. This study aims to obtain active and homogeneous protein for structural and biological studies that will clarify the functional aspects of this toxin. The DNA fragment encoding pulchellin A-chain was cloned and inserted into pGEX-5X to express the recombinant pulchellin A-chain (rPAC) as a fusion protein in Escherichia coli. The deduced amino acid sequence analyses of the rPAC presented a high sequential identity (> 86%) with the A-chain of abrin-c. The ability of the rPAC to depurinate rRNA in yeast ribosome was also demonstrated in vitro. In order to validate the toxic activity we promoted the in vitro association of the rPAC with the recombinant pulchellin binding chain (rPBC). Both chains were incubated in the presence of a reduced/oxidized system, yielding an active heterodimer (rPAB). The rPAB showed an apparent molecular mass of approximately 60 kDa, similar to the native pulchellin. The toxic activities of the rPAB and native pulchellin were compared by intraperitoneal injection of different dilutions into mice. The rPAB was able to kill 50% of the tested mice with doses of 45 microg x kg(-1). Our results indicated that the heterodimer showed toxic activity and a conformational pattern similar to pulchellin. In addition, rPAC produced in this heterologous system might be useful for the preparation of immunoconjugates with potential as a therapeutic agent.
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MESH Headings
- Abrus/chemistry
- Abrus/genetics
- Amino Acid Sequence
- Animals
- Circular Dichroism
- Cloning, Molecular
- DNA, Complementary/genetics
- DNA, Complementary/isolation & purification
- DNA, Plant/genetics
- DNA, Plant/metabolism
- Injections, Intraperitoneal
- Mice
- Molecular Sequence Data
- N-Glycosyl Hydrolases/metabolism
- Plant Proteins/chemistry
- Plant Proteins/metabolism
- Plant Proteins/toxicity
- Protein Conformation
- Protein Subunits/chemistry
- Protein Subunits/metabolism
- Protein Subunits/toxicity
- RNA, Fungal/genetics
- RNA, Fungal/metabolism
- RNA, Plant/genetics
- RNA, Plant/metabolism
- RNA, Ribosomal/genetics
- RNA, Ribosomal/metabolism
- Recombinant Fusion Proteins/chemistry
- Recombinant Fusion Proteins/metabolism
- Recombinant Fusion Proteins/toxicity
- Ribosomes/metabolism
- Saccharomyces cerevisiae/metabolism
- Seeds/chemistry
- Sequence Homology, Amino Acid
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Affiliation(s)
- André L C Silva
- Centro de Biotecnologia Molecular Estrutural, Instituto de Física de São Carlos, Universidade de São Paulo, Brazil
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Marsden CJ, Knight S, Smith DC, Day PJ, Roberts LM, Phillips GJ, Lord JM. Insertional mutagenesis of ricin A chain: a novel route to an anti-ricin vaccine. Vaccine 2004; 22:2800-5. [PMID: 15246614 DOI: 10.1016/j.vaccine.2004.01.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2003] [Accepted: 01/07/2004] [Indexed: 11/29/2022]
Abstract
The insertion of a specific 25-residue internal peptide into ricin toxin A chain (RTA) reduced the catalytic activity of this protein approximately 300-fold. Directed proteolytic cleavage of the peptide insert essentially restored catalytic activity of the resulting two peptide A chain to normal levels. Ricin holotoxin containing unprocessed mutant A chain was not toxic to cultured mammalian cells, due to enhanced proteasomal degradation, nor was it toxic when injected into rats at a concentration that is lethal in the case of native ricin. Rats treated in this way were completely resistant to native ricin when subsequently challenged with a potentially lethal dose of the toxin. These ricin-resistant animals had a significant anti-ricin antibody titer, indicating that this approach has potential for developing an effective vaccine against this toxin.
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Affiliation(s)
- Catherine J Marsden
- Department of Biological Sciences, University of Warwick, Coventry, CV4 7AL, UK.
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