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Tamborelli A, Mujica ML, Amaranto M, Barra JL, Rivas G, Godino A, Dalmasso P. L-Lactate Electrochemical Biosensor Based on an Integrated Supramolecular Architecture of Multiwalled Carbon Nanotubes Functionalized with Avidin and a Recombinant Biotinylated Lactate Oxidase. Biosensors (Basel) 2024; 14:196. [PMID: 38667189 PMCID: PMC11048174 DOI: 10.3390/bios14040196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/05/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
L-Lactate is an important bioanalyte in the food industry, biotechnology, and human healthcare. In this work, we report the development of a new L-lactate electrochemical biosensor based on the use of multiwalled carbon nanotubes non-covalently functionalized with avidin (MWCNT-Av) deposited at glassy carbon electrodes (GCEs) as anchoring sites for the bioaffinity-based immobilization of a new recombinant biotinylated lactate oxidase (bLOx) produced in Escherichia coli through in vivo biotinylation. The specific binding of MWCNT-Av to bLOx was characterized by amperometry, surface plasmon resonance (SPR), and electrochemical impedance spectroscopy (EIS). The amperometric detection of L-lactate was performed at -0.100 V, with a linear range between 100 and 700 µM, a detection limit of 33 µM, and a quantification limit of 100 µM. The proposed biosensor (GCE/MWCNT-Av/bLOx) showed a reproducibility of 6.0% and it was successfully used for determining L-lactate in food and enriched serum samples.
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Affiliation(s)
- Alejandro Tamborelli
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, Córdoba 5016, Argentina;
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina;
| | - Michael López Mujica
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina;
| | - Marilla Amaranto
- CIQUIBIC, CONICET-UNC, Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina; (M.A.); (J.L.B.)
| | - José Luis Barra
- CIQUIBIC, CONICET-UNC, Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina; (M.A.); (J.L.B.)
| | - Gustavo Rivas
- INFIQC, CONICET-UNC, Departamento de Fisicoquímica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina;
| | - Agustina Godino
- CIQUIBIC, CONICET-UNC, Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba 5000, Argentina; (M.A.); (J.L.B.)
| | - Pablo Dalmasso
- CIQA, CONICET, Departamento de Ingeniería Química, Facultad Regional Córdoba, Universidad Tecnológica Nacional, Maestro López esq. Cruz Roja Argentina, Córdoba 5016, Argentina;
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Ahumada M, Godino A, Guasconi L, Deheza C, Amaranto M, Pruzzo CI, Vitulli-Moya G, Chiapello L, Carrizo ME, Barra JL, Cervi L. Antibody detection against Kunitz-type protein in Fasciola hepatica experimentally infected sheep using enzyme-linked immunosorbent assay (ELISA). Int J Vet Sci Med 2023; 11:126-137. [PMID: 38173987 PMCID: PMC10763594 DOI: 10.1080/23144599.2023.2273678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/18/2023] [Indexed: 01/05/2024] Open
Abstract
Fasciolosis is a parasitic disease considered as emerging and neglected by the WHO. Sheep are highly susceptible to this disease, and affected flocks experience decreased productivity due to increased mortality, and the reduced quality of their products, such as wool and meat. To effectively control this disease, reliable and early diagnosis is essential for making decisions regarding antiparasitic application and/or the removal of affected animals. Currently, the diagnosis of F. hepatica in sheep relies on the detection of parasite eggs in faeces, a method that becomes reliable from week 10 post-infection. Consequently, there is a need for earlier diagnostic tools based on immune response. However, obtaining antigens for antibody detection has proven to be difficult and expensive. The aim of this study was to evaluate members of the Kunitz protein family of F. hepatica expressed in the form of a fusion protein in the serological diagnosis of F. hepatica in sheep. The performance of three recombinant F. hepatica Kunitz-type inhibitors (FhKT1.1, FhKT1.3, and FhKT4) was compared with a synthetic Kunitz-type peptide (sFhKT) in sera from sheep experimentally infected with F. hepatica, using an ELISA. Of these, FhKT1.1 showed the most promising diagnostic indicators, exhibiting high precision and low cross-reactivity, and thus potential for standardized production. The results of our study demonstrated that the application of FhKT1.1 is a valuable tool for early-stage diagnosis of F. hepatica in sheep. Such an early diagnosis can aid in implementing timely interventions and effectively managing the disease in sheep populations.
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Affiliation(s)
- María Ahumada
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
- Facultad de Ciencias Agropecuarias, Universidad Católica de Córdoba, Córdoba, Argentina
- Instituto Nacional de Tecnología Agropecuaria (INTA) Estación Experimental Agropecuaria Manfredi, Córdoba, Argentina
| | - Agustina Godino
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina
| | - Lorena Guasconi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Carla Deheza
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - Marilla Amaranto
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina
| | - Cesar Iván Pruzzo
- Departamento de Epizootiología y Salud Pública, Universidad Nacional de La Plata, La Plata, Argentina
- Centro de Diagnósticos e Investigación Veterinaria (CEDIVE), Universidad Nacional de La Plata, La Plata, Argentina
| | - Gabriel Vitulli-Moya
- Centro de Diagnósticos e Investigación Veterinaria (CEDIVE), Universidad Nacional de La Plata, La Plata, Argentina
| | - Laura Chiapello
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina
| | - María Elena Carrizo
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina
| | - José Luis Barra
- Departamento de Química Biológica Ranwel Caputto, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina
| | - Laura Cervi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Modrego A, Amaranto M, Godino A, Mendoza R, Barra JL, Corchero JL. Human α-Galactosidase A Mutants: Priceless Tools to Develop Novel Therapies for Fabry Disease. Int J Mol Sci 2021; 22:6518. [PMID: 34204583 PMCID: PMC8234732 DOI: 10.3390/ijms22126518] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/09/2021] [Accepted: 06/14/2021] [Indexed: 12/25/2022] Open
Abstract
Fabry disease (FD) is a lysosomal storage disease caused by mutations in the gene for the α-galactosidase A (GLA) enzyme. The absence of the enzyme or its activity results in the accumulation of glycosphingolipids, mainly globotriaosylceramide (Gb3), in different tissues, leading to a wide range of clinical manifestations. More than 1000 natural variants have been described in the GLA gene, most of them affecting proper protein folding and enzymatic activity. Currently, FD is treated by enzyme replacement therapy (ERT) or pharmacological chaperone therapy (PCT). However, as both approaches show specific drawbacks, new strategies (such as new forms of ERT, organ/cell transplant, substrate reduction therapy, or gene therapy) are under extensive study. In this review, we summarize GLA mutants described so far and discuss their putative application for the development of novel drugs for the treatment of FD. Unfavorable mutants with lower activities and stabilities than wild-type enzymes could serve as tools for the development of new pharmacological chaperones. On the other hand, GLA mutants showing improved enzymatic activity have been identified and produced in vitro. Such mutants could overcome several complications associated with current ERT, as lower-dose infusions of these mutants could achieve a therapeutic effect equivalent to that of the wild-type enzyme.
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Affiliation(s)
- Andrea Modrego
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain; (A.M.); (R.M.)
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Marilla Amaranto
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba, CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5016, Argentina; (M.A.); (A.G.); (J.L.B.)
| | - Agustina Godino
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba, CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5016, Argentina; (M.A.); (A.G.); (J.L.B.)
| | - Rosa Mendoza
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain; (A.M.); (R.M.)
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), c/Monforte de Lemos 3–5, 28029 Madrid, Spain
| | - José Luis Barra
- Departamento de Química Biológica Ranwel Caputto, Centro de Investigaciones en Química Biológica de Córdoba, CONICET, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba 5016, Argentina; (M.A.); (A.G.); (J.L.B.)
| | - José Luis Corchero
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain; (A.M.); (R.M.)
- Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), c/Monforte de Lemos 3–5, 28029 Madrid, Spain
- Departament de Genètica i de Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
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Galíndez MF, Carrica A, Zarate AM, Secchi D, Don J, Barra JL, Brunotto M. DNA repair, NFKβ, and TP53 polymorphisms associated with potentially malignant disorders and oral squamous cell carcinoma in Argentine patients. Oral Surg Oral Med Oral Pathol Oral Radiol 2020; 131:339-346. [PMID: 33309268 DOI: 10.1016/j.oooo.2020.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/12/2020] [Accepted: 11/08/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVE An important strategy in cancer prevention is to identify individual susceptibilities for cancer development through the genomic profile. Developing countries such as Argentina have no data on genetic composition. The aim of this study was to evaluate the single nucleotide polymorphisms of genes related to DNA repair (XCCR3, XPD), cell cycle arrest/apoptosis (TP53), and inflammation (NFKβ) of patients with precancer and oral cancer and to contribute to recognizing potential risk of developing these pathologies, and incorporate the risk patients into a clinical follow-up program in Córdoba, Argentina. STUDY DESIGN A cross-sectional study was performed on 140 patients with oral squamous cell carcinoma (OSCC), oral potentially malignant disorders (OPMDs), and controls. Genotyping of single nucleotide polymorphisms was performed using allele-specific polymerase chain reaction or restriction fragment length polymorphism techniques. The variables were evaluated by bivariate and multivariate statistical methods, with P < .05 statistically significant. RESULTS The multiple correspondence analyses showed that patients with OSCC are clustered with the T allele of XRCC3 T241 M and the C allele of TP53 R72 P, and patients with OPMDs are clustered with the T allele of NFKβ-519. CONCLUSION Our preliminary results showed that the C allele of the Pro72 variant of TP53 was related to OSSC and OPMD, and the T allele of NFKβ-519 is related to OPMDs in Argentine patients.
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Affiliation(s)
- María Fernanda Galíndez
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - Andrés Carrica
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - Ana María Zarate
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - Dante Secchi
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - Julieta Don
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - José Luis Barra
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, CIQUIBIC-CONICET, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina
| | - Mabel Brunotto
- Universidad Nacional de Córdoba, Facultad de Odontología, Departamento de Patología Bucal, Haya de la Torre S/N, Ciudad Universitaria, Córdoba, Argentina; Instituto de Investigaciones en Ciencias de la Salud, (INICSA-CONICET-UNC), Bv. de la Reforma esq. Enf. Gordillo, Ciudad Universitaria, Córdoba, Argentina.
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Garay-Novillo JN, García-Morena D, Ruiz-Masó JÁ, Barra JL, Del Solar G. Combining Modules for Versatile and Optimal Labeling of Lactic Acid Bacteria: Two pMV158-Family Promiscuous Replicons, a Pneumococcal System for Constitutive or Inducible Gene Expression, and Two Fluorescent Proteins. Front Microbiol 2019; 10:1431. [PMID: 31297101 PMCID: PMC6607859 DOI: 10.3389/fmicb.2019.01431] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 06/06/2019] [Indexed: 11/24/2022] Open
Abstract
Labeling of bacterial cells with fluorescent proteins allows tracking the bacteria in competition and interactomic in vivo and in vitro studies. During the last years, a few plasmid vectors have been developed aimed at the fluorescent labeling of specific members of the lactic acid bacteria (LAB), a heterogeneous group that includes microorganisms used in the food industry, as probiotics, or as live vectors for mucosal vaccines. Successful and versatile labeling of a broad range of LAB not only requires a vector containing a promiscuous replicon and a widely recognized expression system for the constitutive or regulated expression of the fluorescence determinant, but also the knowledge of the main features of the entire plasmid/host/fluorescent protein ensemble. By using the LAB model species Lactococcus lactis, we have compared the utility properties of a set of labeling vectors constructed by combining a promiscuous replicon (pMV158 or pSH71) of the pMV158 plasmid family with the gene encoding either the EGFP or the mCherry fluorescent protein placed under control of promoter PX or PM from the pneumococcal mal gene cluster for maltosaccharide uptake and utilization, respectively. Some vectors carrying PM also harbor the malR gene, whose product represses transcription from this promoter, thus enabling maltose-inducible synthesis of the fluorescent proteins. We have determined the plasmid copy number (PCN) and segregational stability of the different constructs, as well as the effect of these features on the fitness and fluorescence intensity of the lactococcal host. Constructs based on the pSH71 replicon had a high copy number (∼115) and were segregationally stable. The copy number of vectors based on the pMV158 replicon was lower (∼8–45) and varied substantially depending on the genetic context of the plasmid and on the bacterial growth conditions; as a consequence, inheritance of these vectors was less stable. Synthesis of the fluorescent proteins encoded by these plasmids did not significantly decrease the host fitness. By employing inducible expression vectors, the fluorescent proteins were shown to be very stable in this bacterium. Importantly, conditions for accurate quantification of the emitted fluorescence were established based on the maturation times of the fluorescent proteins.
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Affiliation(s)
- Javier Nicolás Garay-Novillo
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain.,Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC-CONICET), Córdoba, Argentina
| | - Diego García-Morena
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - José Ángel Ruiz-Masó
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
| | - José Luis Barra
- Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC-CONICET), Córdoba, Argentina
| | - Gloria Del Solar
- Departamento de Biotecnología Microbiana y de Plantas, Centro de Investigaciones Biológicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain
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Zarate AM, Don J, Secchi D, Carrica A, Galindez Costa F, Panico R, Brusa M, Barra JL, Brunotto M. Study of the TP53 codon 72 polymorphism in oral cancer and oral potentially malignant disorders in Argentine patients. Tumour Biol 2017; 39:1010428317699113. [PMID: 28459200 DOI: 10.1177/1010428317699113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The aim of this work was to evaluate the prevalence of TP53Arg72Pro mutations and their possible relationship with oral carcinoma and oral potentially malignant disorders in Argentine patients. A cross-sectional study was performed on 111 exfoliated cytologies from patients with oral cancer (OC), oral potentially malignant disorders (OPMD) and controls. The TP53Arg72Pro mutations were determined using conventional PCR. We evaluated univariate and multivariate study variables, setting p < 0.05. We found: (a) a low frequency of Pro72 variant in control group and a high frequency in OC and OPMD, as well in OC and oral leukoplakia (OL) diagnosis; (b) multivariate association among the TP53CC genotype and females over 45 years with no tobacco nor alcohol habits with oral lichen planus pathology; (c) multivariate association between the TP53GC genotype and males with alcohol and tobacco habits and OC and OL pathologies. Our results showed that the wild-type Arg72variant was related to control patients and Pro72variant was related to OC and OPMD, in Argentine patients.
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Affiliation(s)
- Ana Maria Zarate
- 1 Departamento de Biología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Julieta Don
- 1 Departamento de Biología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Dante Secchi
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Andres Carrica
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Fernanda Galindez Costa
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Rene Panico
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Martin Brusa
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - José Luis Barra
- 3 Facultad de Ciencias Químicas, CIQUIBIC-CONICET, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Mabel Brunotto
- 2 Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Córdoba, Argentina
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Brunotto M, Zarate AM, Bono A, Barra JL, Berra S. Risk genes in head and neck cancer: a systematic review and meta-analysis of last 5 years. Oral Oncol 2013; 50:178-88. [PMID: 24370206 DOI: 10.1016/j.oraloncology.2013.12.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 02/03/2023]
Abstract
The aim of this work was to identify risk genes related to the development and progression of squamous cell carcinoma head and neck (SCCHN) and do a meta-analysis of available estimates. Eligible gene/polymorphism studies were identified by electronic searches. Individual participant data of 8540 patients with HNC and 9844 controls from 19 genetic studies were analyzed, yielding adjusted (tobacco, gender, age and alcohol) odds ratios (OR) and 95% confidence intervals (CIs) comparing cases with controls. A meta-analysis was done on the studies that applied fixed and random models. People have an increase of polymorphism expression related to inflammation (NFKB1-294-ATTG, TNFα308-A2A2/A2A1, and TNFβ252- B2B2/B2B1) or carcinogenic metabolism (GSTM1 null, and CYP1A1 m1/m1), representative of malignancy development. Furthermore, the increased expression of genes associated with the stabilization and repair of the cellular (OGG1-Asp267Asn, Ser279Gly Ile253Phe, 1578A>T, 1582C>T Ala399Glu (1542C>A) 1582insG 1543_1544delCT), and genes associated with the regulation of proliferation, apoptosis or tumor survival (miRNA499-CT/CC, CRYABC802G-CG/GG) are considered as risk factors. In this scheme, only the polymorphisms of ADH7A92G-GG and DEC1606-T/C genes are protective against malignancy transformation. The TP53, GSTM1 and CYPA1genes have been evaluated in more than one study and analyzed for homogeneity in each genotype. The meta-analysis showed no significant association between different allelic variants of Arg72Pro rs1042522 and SCCHN risk. In a model of tumorigenesis, an increased risk of SCCHN is associated with DNA repair and DNA stabilization genes. In addition, the polymorphisms involved in inflammation and carcinogenic metabolism processes represent an increased risk of SCCHN.
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Affiliation(s)
- M Brunotto
- Departamento de Biología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Argentina.
| | - A M Zarate
- Departamento de Biología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Argentina
| | - A Bono
- Departamento de Patología Bucal, Facultad de Odontología, Universidad Nacional de Córdoba, Argentina
| | - J L Barra
- CIQUIBIC, UNC-CONICET, Departamento de Química Biológica, Facultad Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
| | - S Berra
- Instituto de Investigaciones en Ciencias de la Salud (INICSA-CONICET), Universidad Nacional de Córdoba, Argentina
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Zarate AM, Secchi D, Carrica A, Barra JL, Brunotto M. PP068. Oral Oncol 2013. [DOI: 10.1016/j.oraloncology.2013.03.311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Brunotto M, Zarate AM, Barra JL, Malberti A. Graph models for phenotype and genotype association between oral mucosa and submandibular gland tumorigenesis in rat. J Oral Pathol Med 2008; 38:463-9. [DOI: 10.1111/j.1600-0714.2008.00692.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Brunotto M, Malberti A, Zárate AM, Barra JL, Calderón O, Piñas E, Plavnik L, Crosa M. Early phenotypic and genotypic alterations in submandibular gland oncogenesis in rats. Acta Odontol Latinoam 2006; 19:13-21. [PMID: 17121194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The present study evaluates the phenotypic and genotypic changes that take place during early oncogenesis. The submandibular glands of male rats were injected with a 0.5% solution of 9,10-dimethyl-1,2-benzanthracene (DMBA) in acetone. Gland samples were taken at 0, 7, 30 and 150 days post-injection and submitted to histological, biochemical, immunocytochemical and PCR evaluation. Histopathological analysis was performed on hematoxylin-eosin stained slides. Total protein content was assessed by Lowry's method and the protein profile was analyzed by 12% SDS-PAGE. Bcl-2 was demonstrated by silver-enhanced gold immunolabeling. p53 immunolabeling was performed using the streptavidin-biotin system. All the treated animals developed carcinoma-like lesions at 30 and 150 days. Total protein concentration rose significantly (p < 0.05) above control values at 7, 30 and 150 days. The treated glands exhibited positive immunolabeling for p53 in the nuclei of neoplastic cells at 30 and 150 days. Treated glands also showed positive cytoplasmic immunolabeling for Bcl-2, exhibiting statistically significant differences between 7, 30 and 150 days (p = 0.0015), and with controls (p < 0.0001). No p53 mutations were observed whereas a point mutation, C-to-A, of the Bcl-2 gene was detected at 7, 30 and 150 days by PCR amplification. This mutation led to a single aminoacid change (thre --> asn) in the protein molecule. Our results suggest that the early histopathological changes correspond to quantitative and qualitative protein changes. The histopathological, biochemical, immunocytochemical and genetic alterations observed during the course of experimental carcinogenesis in the submandibular gland of the rat could constitute reproducible indices of malignant transformation applicable to human oncogenesis, given the high degree of homology between the oncogenes of mice, rats and human beings.
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Affiliation(s)
- Mabel Brunotto
- Department of Oral Biology, Faculty of Dentistry, National University of Córdoba, Argentina.
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Barra JL, Rhounim L, Rossignol JL, Faugeron G. Histone H1 is dispensable for methylation-associated gene silencing in Ascobolus immersus and essential for long life span. Mol Cell Biol 2000; 20:61-9. [PMID: 10594009 PMCID: PMC85047 DOI: 10.1128/mcb.20.1.61-69.2000] [Citation(s) in RCA: 79] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/1999] [Accepted: 09/28/1999] [Indexed: 11/20/2022] Open
Abstract
A gene encoding a protein that shows sequence similarity with the histone H1 family only was cloned in Ascobolus immersus. The deduced peptide sequence presents the characteristic three-domain structure of metazoan linker histones, with a central globular region, an N-terminal tail, and a long positively charged C-terminal tail. By constructing an artificial duplication of this gene, named H1, it was possible to methylate and silence it by the MIP (methylation induced premeiotically) process. This resulted in the complete loss of the Ascobolus H1 histone. Mutant strains lacking H1 displayed normal methylation-associated gene silencing, underwent MIP, and showed the same methylation-associated chromatin modifications as did wild-type strains. However, they displayed an increased accessibility of micrococcal nuclease to chromatin, whether DNA was methylated or not, and exhibited a hypermethylation of the methylated genome compartment. These features are taken to imply that Ascobolus H1 histone is a ubiquitous component of chromatin which plays no role in methylation-associated gene silencing. Mutant strains lacking histone H1 reproduced normally through sexual crosses and displayed normal early vegetative growth. However, between 6 and 13 days after germination, they abruptly and consistently stopped growing, indicating that Ascobolus H1 histone is necessary for long life span. This constitutes the first observation of a physiologically important phenotype associated with the loss of H1.
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Affiliation(s)
- J L Barra
- Institut Jacques Monod, UMR 7592, CNRS/Université Paris 7/Université Paris 6, 75251 Paris Cedex 05, France
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Balanzino LE, Barra JL, Galván EM, Roth GA, Monferran CG. Interaction of cholera toxin and Escherichia coli heat-labile enterotoxin with glycoconjugates from rabbit intestinal brush border membranes: relationship with ABH blood group determinants. Mol Cell Biochem 1999; 194:53-62. [PMID: 10391124 DOI: 10.1023/a:1006971913175] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The capacity of cholera toxin (CT) and type I heat-labile enterotoxin produced by Escherichia coli isolated from human intestine (LTh) to interact with glycoconjugates bearing ABH blood group determinants from rabbit intestinal brush border membranes (BBM) was studied. On the basis of the type of intestinal compounds related to the human ABH blood group antigens, rabbits were classified as AB or H. Toxin binding to the intestinal glycolipids and glycoproteins depends on the blood group determinant borne by the glycoconjugate and on the analyzed toxin. LTh was capable of interacting preferentially with several blood group A- and B-active BBM glycolipids compared to those isolated from animals lacking these antigens (H rabbits). Also, LTh preferably bound to several BBM glycoproteins from AB rabbit intestines compared to those from H ones. One of these glycoproteins, the sucrase-isomaltase complex (EC 3.2.1.48-10) isolated from AB and H rabbits showed the same differential LTh binding. Conversely, CT practically did not recognize either blood group A-, B-, or H-active glycolipids and glycoproteins. These results may be relevant for carrying out in vivo experiments in rabbits in order to disclose the role of ABH active-glycoconjugates in the secretory response induced by LTh in rabbit intestine.
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Affiliation(s)
- L E Balanzino
- Departamento de Química Biológica Dr. Ranwel Caputto - CIQUIBIC (CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
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Barra JL, Mautino MR, Rosa AL. A dominant negative effect of eth-1r, a mutant allele of the Neurospora crassa S-adenosylmethionine synthetase-encoding gene conferring resistance to the methionine toxic analogue ethionine. Genetics 1996; 144:1455-62. [PMID: 8978034 PMCID: PMC1207698 DOI: 10.1093/genetics/144.4.1455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
eth-1r, a thermosensitive allele of the Neurospora crassa S-adenosylmethionine (AdoMet) synthetase gene that confers ethionine resistance, has been cloned and sequenced. Replacement of an aspartic amino acid residue (D48-->N48), perfectly conserved in prokaryotic, fungal and higher eukaryotic AdoMet synthetases, was found responsible for both thermosensitivity and ethionine resistance conferred by eth-1r. Gene fusion constructs, designed to overexpress eth-1r in vivo, render transformant cells resistant to ethionine. Dominance of ethionine resistance was further demonstrated in eth-1+/eth-1r partial diploids carrying identical gene doses of both alleles. Heterozygous eth-1+/eth-1r cells have, at the same time, both the thermotolerance conferred by eth-1+ and the ethionine-resistant phenotype conferred by eth-1r. AdoMet levels and AdoMet synthetase activities were dramatically decreased in heterozygous eth-1+/ eth-1r cells. We propose that this negative effect exerted by eth-1r results from the in vivo formation of heteromeric eth-1+/eth-1r AdoMet synthetase molecules.
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Affiliation(s)
- J L Barra
- Departamento de Química Biológica (CIQUIBIC-CONICET), Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
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Mautino MR, Barra JL, Rosa AL. eth-1, the Neurospora crassa locus encoding S-adenosylmethionine synthetase: molecular cloning, sequence analysis and in vivo overexpression. Genetics 1996; 142:789-800. [PMID: 8849888 PMCID: PMC1207019 DOI: 10.1093/genetics/142.3.789] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Intense biochemical and genetic research on the eth-1r mutant of Neurospora crassa suggested that this locus might encode S-adenosylmethionine synthetase (S-Adomet synthetase). We have used protoplast transformation and phenotypic rescue of a thermosensitive phenotype associated with the eth-1r mutation to clone the locus. Nucleotide sequence analysis demonstrated that it encodes S-Adomet synthetase. Homology analyses of prokaryotic, fungal and higher eukaryotic S-Adomet synthetase polypeptide sequences show a remarkable evolutionary conservation of the enzyme. N. crassa strains carrying S-Adomet synthetase coding sequences fused to a strong heterologous promoter were constructed to assess the phenotypic consequences of in vivo S-Adomet synthetase overexpression. Studies of growth rates and microscopic examination of vegetative development revealed that normal growth and morphogenesis take place in N. crassa even at abnormally high levels of cellular S-Adomet. The degree of cytosine methylation of a naturally methylated genomic region was dependent on the cellular levels of S-Adomet. We conclude that variation in S-Adomet levels in N. crassa cells, which in addition to the status of genomic DNA methylation could modify the flux of other S-Adomet-dependent metabolic pathways, does not affect growth rate or morphogenesis.
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Affiliation(s)
- M R Mautino
- Departamento de Química Biológica (CIQUIBIC-CONICET), Universidad Nacional de Córdoba, Argentina
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Rodriguez PE, Barra JL, Cumar FA. Glycolipids noncovalently bound to DEAE-Sephadex. Use of the complexes for purification of IgM and IgG anti-(Gal beta 1-->3 GalNAc-) antibodies. Biochem Mol Biol Int 1994; 33:273-81. [PMID: 7524899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A method for the purification by affinity of antibodies of the IgM and IgG classes against the (Gal beta 1-->3 GalNAc-) epitope has been developed. The immunoadsorbent is based on the property of DEAE-Sephadex to bind acid glycolipids bearing this epitope, by electrostatic and hydrophobic interactions in a stable form in an aqueous medium. The acid glycolipid employed was asialo-GM1 ganglioside (GA1) derivatized to produce a carboxyl function on the olefinic bond of the sphingosine moiety (GA1 acid). The DEAE-Sephadex-GA1 acid complex was used to purify the antibodies of the IgG class from serum of an immunized rabbit and of the IgM class from a human serum. The specific activities of the purified antibodies were 1,200- to 2,400-fold higher, and the antibody activities were quantitatively recovered respect to the untreated sera, in both cases. The sequential use of two immunoadsorbents: DEAE-Sephadex-ganglioside and DEAE-Sephadex-GA1 acid, allows the separation of the two classes of immunoglobulins that recognize the same sugar residues in glycolipids.
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Affiliation(s)
- P E Rodriguez
- Departamento de Quimica Biologica-CIQUIBIC, Facultad de Ciencias Quimicas-CONICET, Universidad Nacional de Cordoba, Argentina
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Balanzino LE, Barra JL, Monferran CG, Cumar FA. Differential interaction of Escherichia coli heat-labile toxin and cholera toxin with pig intestinal brush border glycoproteins depending on their ABH and related blood group antigenic determinants. Infect Immun 1994; 62:1460-4. [PMID: 7510669 PMCID: PMC186303 DOI: 10.1128/iai.62.4.1460-1464.1994] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The ability of glycoproteins from pig intestinal brush border membranes (BBM) to bind cholera toxin (CT) or heat-labile toxins from strains of Escherichia coli isolated from human (LTh) or pig (LTp) intestines was studied. Glycoproteins capable of binding the toxins are also recognized by antibodies or lectins specific for ABO(H) blood group and related antigens. Pigs expressing A, H, or I antigenic determinants were used for comparison. The toxin-binding capacity of a glycoprotein depends on the toxin type and the blood group epitope borne by the glycoprotein. LTh and LTp preferably bound to several blood group A-active glycoproteins rather than H-active glycoproteins. By contrast, CT practically did not recognize either blood group A- or blood group H-active glycoproteins, while glycoproteins from pigs expressing I antigenic determinants were able to interact with LTh, LTp, and CT. LTh, LTp, or CT glycoprotein binding was selectively inhibited by specific lectins or monosaccharides. Affinity purification of the toxin binding brush border glycoproteins on the basis of their blood group reactivity suggests that such glycoproteins are hydrolytic enzymes. BBM from A+ pigs contain about 27 times more LTh binding sites, in addition to those recognized by CT, than an equivalent membrane preparation from H+ pigs. The present findings may help clarify some previous unclear results on LTh binding to intestinal BBM glycoproteins obtained by use of animals not typed by their ABO(H) blood group phenotype.
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Affiliation(s)
- L E Balanzino
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
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Barra JL, Monferran CG, Balanzino LE, Cumar FA. Escherichia coli heat-labile enterotoxin preferentially interacts with blood group A-active glycolipids from pig intestinal mucosa and A- and B-active glycolipids from human red cells compared to H-active glycolipids. Mol Cell Biochem 1992; 115:63-70. [PMID: 1435767 DOI: 10.1007/bf00229097] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The capacity of cholera toxin (CT) and of the heat-labile enterotoxin produced by Escherichia coli isolated from humans (LTh) to interact with glycolipids bearing ABO(H) blood group determinants isolated from different sources and separated by thin layer chromatography was studied. Toxin binding to the ABO(H)-related glycolipids depends on the glycolipid source, the type of the blood group activity, and the toxin. LTh and CT were capable of interacting with several blood group-active glycolipids from pig intestinal mucosa and both toxins preferentially recognize glycolipids isolated from animals carrying A-blood group antigenic determinants compared to those isolated from animals lacking these antigens. In contrast, LTh but not CT was able to interact with ABO(H)-active glycolipids from human erythrocytes. LTh preferentially binds to glycolipids isolated from A, B, and AB compared to O red cells. Results from competition experiments between CT and LTh for binding to the blood group-active glycolipids suggest that the carbohydrate structure requirements for the interaction of each toxin are different. The present findings may help to understand the results of clinical studies indicating an association between ABO(H) blood groups and the severity of diarrheal diseases produced by some toxigenic enterobacteria.
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Affiliation(s)
- J L Barra
- Departamento de Quimica Biologica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Ciquibic-Conicet, Argentina
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