1
|
Guardalini LGO, Leme J, da Silva Cavalcante PE, de Mello RG, Bernardino TC, Jared SGS, Antoniazzi MM, Astray RM, Tonso A, Núñez EGF, Jorge SAC. Sf9 Cell Metabolism Throughout the Recombinant Baculovirus and Rabies Virus-Like Particles Production in Two Culture Systems. Mol Biotechnol 2024; 66:354-364. [PMID: 37162721 DOI: 10.1007/s12033-023-00759-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 04/22/2023] [Indexed: 05/11/2023]
Abstract
This work aimed to assess the Sf9 cell metabolism during growth, and infection steps with recombinant baculovirus bearing rabies virus proteins, to finally obtain rabies VLP in two culture systems: Schott flask (SF) and stirred tank reactor (STR). Eight assays were performed in SF and STR (four assays in each system) using serum-free SF900 III culture medium. Two non-infection growth kinetics assays and six recombinant baculovirus infection assays. The infection runs were carried out at 0.1 pfu/cell multiplicity of infection (MOI) for single baculovirus bearing rabies glycoprotein (BVG) and matrix protein (BVM) and a coinfection with both baculoviruses at MOI of 3 and 2 pfu/cell for BVG and BVM, respectively. The SF assays were done in triplicate. The glucose, glutamine, glutamate, lactate, and ammonium uptake or release specific rates were quantified over the exponential growth phase and infection stage. The highest uptake specific rate was observed for glucose (42.5 × 10-12 mmol cell/h) in SF and for glutamine (30.8 × 10-12 mmol/cell/h) in STR, in the exponential growth phases. A wave pattern was observed for assessed analytes throughout the infection phase and the glucose had the highest wave amplitude within the 10-10 mmol cell/h order. This alternative uptake and release behavior is in harmony with the lytic cycle of baculovirus in insect cells. The virus propagation and VLP generation were not limited by glucose, glutamine, and glutamate, neither by the toxicity of lactate nor ammonium under the conditions appraised in this work. The findings from this work can be useful to set baculovirus infection processes at high cell density to improve rabies VLP yield, purity, and productivity.
Collapse
Affiliation(s)
| | - Jaci Leme
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | | | - Renata Gois de Mello
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Thaissa Consoni Bernardino
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Simone Gonçalves Silva Jared
- Laboratório de Biologia Estrutural, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Marta Maria Antoniazzi
- Laboratório de Biologia Estrutural, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Renato Mancini Astray
- Laboratório Multipropósito, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil
| | - Aldo Tonso
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica, Universidade de São Paulo, Av. Prof. Luciano Gualberto, Trav. 3, 380, São Paulo, SP, 05508-900, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos. Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, Rua Arlindo Béttio, 1000, São Paulo, SP, CEP 03828-000, Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av. Vital Brasil 1500, São Paulo, SP, CEP 05503-900, Brazil.
| |
Collapse
|
2
|
de Mello RG, Bernardino TC, Guardalini LGO, Astray RM, Antoniazzi MM, Jared SGS, Núñez EGF, Jorge SAC. Zika virus-like particles (VLPs) produced in insect cells. Front Pharmacol 2023; 14:1181566. [PMID: 37377933 PMCID: PMC10291072 DOI: 10.3389/fphar.2023.1181566] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Introdutcion: The Zika virus (ZIKV) infections are a healthcare concern mostly in the Americas, Africa, and Asia but have increased its endemicity area beyond these geographical regions. Due to the advances in infections by Zika virus, it is imperative to develop diagnostic and preventive tools against this viral agent. Virus-like particles (VLPs) appear as a suitable approach for use as antiviral vaccines. Methods: In this work, a methodology was established to produce virus-like particles containing the structural proteins, C, prM, and E of Zika virus produced in insect cells using the gene expression system derived from baculovirus. The vector pFast- CprME -ZIKV was constructed containing the gene sequences of Zika virus structural proteins and it was used to generate the recombinant bacmids (Bac- CprME -ZIKV) through transformation into DH10BacTM cells. The Bac- CprME -ZIKV was transfected in Spodoptera frugiperda (Sf9) insect cells and batches of BV- CprME -ZIKV were obtained by infection assays using a multiplicity of infection of 2. The Sf9 cells were infected, and the supernatant was collected 96 h post-infection. The expression of the CprME -ZIKV protein on the cell surface could be observed by immunochemical assays. To concentrate and purify virus-like particles, the sucrose and iodixanol gradients were evaluated, and the correct CprME -ZIKV proteins' conformation was evaluated by the Western blot assay. The virus-like particles were also analyzed and characterized by transmission electron microscopy. Results and discussion: Spherical structures like the native Zika virus from 50 to 65 nm containing the CprME -ZIKV proteins on their surface were observed in micrographs. The results obtained can be useful in the development path for a vaccine candidate against Zika virus.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos, Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | | |
Collapse
|
3
|
Leme J, Guardalini LGO, Bernardino TC, Astray RM, Tonso A, Núñez EGF, Jorge SAC. Sf9 Cells Metabolism and Viability When Coinfected with Two Monocistronic Baculoviruses to Produce Rabies Virus-like Particles. Mol Biotechnol 2022; 65:970-982. [PMCID: PMC9672645 DOI: 10.1007/s12033-022-00586-x] [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] [Received: 09/02/2022] [Accepted: 10/14/2022] [Indexed: 11/19/2022]
|
4
|
Bernardino TC, Astray RM, Pereira CA, Boldorini VL, Antoniazzi MM, Jared SGS, Núñez EGF, Jorge SAC. Production of Rabies VLPs in Insect Cells by Two Monocistronic Baculoviruses Approach. Mol Biotechnol 2021; 63:1068-1080. [PMID: 34228257 DOI: 10.1007/s12033-021-00366-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022]
Abstract
Rabies is an ancient zoonotic disease that still causes the death of over 59,000 people worldwide each year. The rabies lyssavirus encodes five proteins, including the envelope glycoprotein and the matrix protein. RVGP is the only protein exposed on the surface of viral particle, and it can induce immune response with neutralizing antibody formation. RVM has the ability to assist with production process of virus-like particles. VLPs were produced in recombinant baculovirus system. In this work, two recombinant baculoviruses carrying the RVGP and RVM genes were constructed. From the infection and coinfection assays, we standardized the best multiplicity of infection and the best harvest time. Cell supernatants were collected, concentrated, and purified by sucrose gradient. Each step was used for protein detection through immunoassays. Sucrose gradient analysis enabled to verify the separation of VLPs from rBV. Through the negative contrast technique, we visualized structures resembling rabies VLPs produced in insect cells and rBV in the different fractions of the sucrose gradient. Using ELISA to measure total RVGP, the recovery efficiency of VLPs at each stage of the purification process was verified. Thus, these results encourage further studies to confirm whether rabies VLPs are a promising candidate for a veterinary rabies vaccine.
Collapse
Affiliation(s)
- Thaissa Consoni Bernardino
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Renato Mancini Astray
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Carlos Augusto Pereira
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | - Vera Lucia Boldorini
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil
| | | | | | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos. Escola de Artes, Ciências E Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Biotecnologia Viral, Instituto Butantan, Av Vital Brasil 1500, São Paulo, CEP, 05503-900, Brazil.
| |
Collapse
|
5
|
Carpinelli Macedo JV, de Barros Ranke FF, Escaramboni B, Campioni TS, Fernández Núñez EG, de Oliva Neto P. Cost-effective lactic acid production by fermentation of agro-industrial residues. Biocatalysis and Agricultural Biotechnology 2020. [DOI: 10.1016/j.bcab.2020.101706] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
6
|
de Barros Ranke FF, Shinya TY, de Figueiredo FC, Fernández Núñez EG, Cabral H, de Oliva Neto P. Ethanol from rice byproduct using amylases secreted by Rhizopus microsporus var. oligosporus. Enzyme partial purification and characterization. J Environ Manage 2020; 266:110591. [PMID: 32392142 DOI: 10.1016/j.jenvman.2020.110591] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 10/20/2019] [Revised: 04/05/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
A three-stage bioethanol bioprocess was developed. Firstly, amylases were obtained from Rhizopus microsporus var. oligosporus using wheat bran in solid-state fermentation. Secondly, amylases hydrolyzed a rice byproduct to make a glucose-rich solution, and this sugar was finally metabolized by Saccharomyces cerevisiae to produce bioethanol. Besides, the secreted enzymes were also partially purified and characterized. The amylase activity (AA) in the crude extract was 358 U/g substrate, and the partially purified enzyme showed the best activity in the 4.0-5.5 pH range. A wide pH stability range (3.5-8.5) was confirmed. The amylase was thermostable up to 60 °C. The ion Mn+2 (10 mM) improved by 60% the AA. There was a 54.9% yield in the conversion of rice residues into reducing sugars in 10 h. The glucose-rich solution was undergone fermentation by S. cerevisiae and showed high ethanol efficiency, 95.8% of the theoretical value. These results suggested a promising technology for bioethanol production.
Collapse
Affiliation(s)
- Fabiane Fernanda de Barros Ranke
- Laboratório de Biotecnologia Industrial - Instituto de Pesquisa em Bioenergia (IPBEN), Departamento de Biotecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus Assis, Avenida Dom Antônio, 2100, 19806-900, Assis, SP, Brazil
| | - Thais Yumi Shinya
- Universidade Estadual do Piauí, Campus Heróis do Jenipapo, Campo Maior, PI, Brazil
| | - Franciane Cristina de Figueiredo
- Laboratório de Biotecnologia Industrial - Instituto de Pesquisa em Bioenergia (IPBEN), Departamento de Biotecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus Assis, Avenida Dom Antônio, 2100, 19806-900, Assis, SP, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo (USP), Rua Arlindo Bettio,1000, Vila Guaraciaba, 03828-000, São Paulo, SP, Brazil.
| | - Hamilton Cabral
- Laboratório de Tecnologia Enzimática Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café, s/n, 14040-903, Ribeirão Preto, SP, Brazil
| | - Pedro de Oliva Neto
- Laboratório de Biotecnologia Industrial - Instituto de Pesquisa em Bioenergia (IPBEN), Departamento de Biotecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus Assis, Avenida Dom Antônio, 2100, 19806-900, Assis, SP, Brazil
| |
Collapse
|
7
|
Dos Santos C, Mizobucchi AL, Escaramboni B, Lopes BP, Angolini CFF, Eberlin MN, de Toledo KA, Núñez EGF. Optimization of Eugenia punicifolia (Kunth) D. C. leaf extraction using a simplex centroid design focused on extracting phenolics with antioxidant and antiproliferative activities. BMC Chem 2020; 14:34. [PMID: 32355912 PMCID: PMC7187488 DOI: 10.1186/s13065-020-00686-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 01/31/2020] [Accepted: 04/16/2020] [Indexed: 11/10/2022] Open
Abstract
Eugenia punicifolia (Kunth) D. C. (Myrtaceae) has been showing interesting biological activities in the literature which was correlated to its phenolic compounds. In the sense of a better recovering of phenolics with the best antioxidant and antiproliferative activities, an extraction, based on multivariate analytical approach, was developed from E. punicifolia leaves. The different extractor solvents (ethanol, methanol and water) and their binary and ternary combinations were evaluated using a simplex-centroid mixture design and surface response methodology. The optimized crude extracts were investigated for phenol and flavonoid content and compared to their antioxidant (EC50) and antiproliferative properties against HEp-2 (cell line derived from the oropharyngeal carcinoma) and mononuclear viability cells. Ethanolic extracts showed the best phenolic content with the highest antioxidant activity and moderated activity antiproliferative to HEp-2. ESI-QTOF–MS revealed the presence of quercetin and myricetin derivatives, which was correlated to activities tested. Then, simplex-centroid design allowed us to correlate the Eugenia punicifolia biological activities with the extracts obtained from solvent different polarity mixtures.![]()
Collapse
Affiliation(s)
- Catarina Dos Santos
- 1Laboratory of Chemistry of UNESP-Assis (LAQUA), Department of Biological Sciences, Faculty of Sciences and Letters, University of São Paulo State (UNESP), Sto Antonio Ave, 19806-900 Assis, SP Brazil
| | - Andressa Lie Mizobucchi
- 1Laboratory of Chemistry of UNESP-Assis (LAQUA), Department of Biological Sciences, Faculty of Sciences and Letters, University of São Paulo State (UNESP), Sto Antonio Ave, 19806-900 Assis, SP Brazil
| | - Bruna Escaramboni
- 2Department of Biotechnology, Faculty of Sciences and Letters, University of São Paulo State (UNESP), 19806-900 Assis, SP Brazil
| | - Bruno Pereira Lopes
- 3Laboratory of Physiopathology of Innate Immunity, Department of Biological Sciences, Faculty of Sciences and Letters, University of São Paulo State (UNESP), 19806-900 Assis, SP Brazil
| | - Celio Fernando Figueiredo Angolini
- 4Mass Spectrometry and Chemical Ecology Laboratory (MS-Cell), Center for Natural and Human Sciences, Federal University of ABC (UFABC), Santo André, São Paulo, SP Brazil
| | - Marcos Nogueira Eberlin
- 5Thomson Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.,6Mackenzie Presbyterian University, Mackenzie Research Nucleus in Science, Faith and Society, Maria Antônia Street, 163 Room 44, Vila Buarque, 01222010 São Paulo, SP Brazil
| | - Karina Alves de Toledo
- 3Laboratory of Physiopathology of Innate Immunity, Department of Biological Sciences, Faculty of Sciences and Letters, University of São Paulo State (UNESP), 19806-900 Assis, SP Brazil
| | - Eutimio Gustavo Fernández Núñez
- 7School of Arts, Sciences and Humanities, University of São Paulo (EACH-USP), Arlindo Béttio Street, 1000 - Vila Guaraciaba, 03828-000 São Paulo, SP Brazil
| |
Collapse
|
8
|
de Rezende AG, Fernández Núñez EG, Astray RM, Puglia ALP, Pereira CA, Jorge SAC. An optimization study for expression of the rabies virus glycoprotein (RVGP) in mammalian cell lines using the Semliki Forest virus (SFV). J Biotechnol 2019; 304:63-69. [PMID: 31442500 DOI: 10.1016/j.jbiotec.2019.08.012] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 08/06/2019] [Accepted: 08/19/2019] [Indexed: 11/24/2022]
Abstract
The Semliki Forest virus (SFV) viral vector has been widely used for transient protein expression. This study aimed to analyze comprehensively the capacity of SFV vector to express rabies lyssavirus glycoprotein (RVGP) in mammalian cells. The assessed parameters were transfection strategy, multiplicity of infection (MOI), harvest time and mammalian cell host. Two transfection approaches, electroporation and lipofection were evaluated to obtain the recombinant SFV, and the electroporation was found to be the most effective. Viral quantification by RT-qPCR was performed to elucidate the relation between the amount of recombinant virus utilized in the infection process and the production levels of the heterologous protein. Four different multiplicities of infection (MOIs = 1; 10; 15; 50) were evaluated using five mammalian cell lines: BHK-21, HuH-7, Vero, L929, and HEK-293T. Protein expression was assessed at two harvest times after infection (24 and 48 h). The recombinant protein generated was characterized by western blot, dot blot, and indirect immunofluorescence (IIF), while its concentration was determined by enzyme-linked immunosorbent assay (ELISA). Similar expression patterns were observed in cell lines BHK-21, HEK-293T, L929, and Vero, with higher RVGP production in the first 24 h. The BHK-21 cells showed yields of up to 4.3 μg per 106 cells when lower MOIs (1 and 10) were used. The HEK-293 T cells also showed similar production (4.3 μg per 106 cells) with MOI of 1, while the L929 and Vero cell lines showed lower expression rates of 2.82 and 1.26 μg per 106 cells, respectively. These cell lines showed lower expression levels at 48 h after infection compared to 24 h. Controversially, in the case of the HuH-7 cell line, RVGP production was higher at 48 h after infection (4.0 μg per 106 cells) and using MOIs of 15 and 50. This work may contribute to optimize the RVGP production using SFV system in mammalian cells. This study can also substantiate for example, the development of approaches that use of SFV for applications for other protein expressions and suggests values for relevant parameters and cell lines of this biotechnique.
Collapse
Affiliation(s)
| | - Eutimio Gustavo Fernández Núñez
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica, Universidade de São Paulo, São Paulo, SP, Brazil; Escola de Artes, Ciências e Humanidades (EACH), Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | | | | |
Collapse
|
9
|
Takahashi MB, Coelho de Oliveira H, Fernández Núñez EG, Rocha JC. Brewing process optimization by artificial neural network and evolutionary algorithm approach. J FOOD PROCESS ENG 2019. [DOI: 10.1111/jfpe.13103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Maria Beatriz Takahashi
- Departamento de Ciências BiológicasUniversidade Estadual Paulista‐UNESP/Assis Assis São Paulo Brazil
| | | | - Eutimio Gustavo Fernández Núñez
- Centro de Ciências Naturais e Humanas (CCNH)Universidade Federal do ABC Santo André São Paulo Brazil
- Escola de Artes, Ciências e Humanidades (EACH)Universidade de São Paulo São Paulo São Paulo Brazil
| | - José Celso Rocha
- Departamento de Ciências BiológicasUniversidade Estadual Paulista‐UNESP/Assis Assis São Paulo Brazil
| |
Collapse
|
10
|
Sartori R, Leme J, Caricati CP, Tonso A, Núñez EGF. MODEL COMPARISON TO DESCRIBE BHK-21 CELL GROWTH AND METABOLISM IN STIRRED TANK BIOREACTORS OPERATED IN BATCH MODE. Braz J Chem Eng 2018. [DOI: 10.1590/0104-6632.20180352s20160592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Roger Sartori
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Brazil
| | | | | | | | - Eutimio Gustavo Fernández Núñez
- Universidade Estadual Paulista “Júlio de Mesquita Filho”, Brazil; Instituto Butantan, Brazil; Universidade Federal do ABC, Brazil
| |
Collapse
|
11
|
Alves EM, Rodrigues RJ, Dos Santos Corrêa C, Fidemann T, Rocha JC, Buzzo JLL, de Oliva Neto P, Núñez EGF. Use of ultraviolet-visible spectrophotometry associated with artificial neural networks as an alternative for determining the water quality index. Environ Monit Assess 2018; 190:319. [PMID: 29717330 DOI: 10.1007/s10661-018-6702-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [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: 11/04/2017] [Accepted: 04/24/2018] [Indexed: 06/08/2023]
Abstract
The water quality index (WQI) is an important tool for water resource management and planning. However, it has major disadvantages: the generation of chemical waste, is costly, and time-consuming. In order to overcome these drawbacks, we propose to simplify this index determination by replacing traditional analytical methods with ultraviolet-visible (UV-Vis) spectrophotometry associated with artificial neural network (ANN). A total of 100 water samples were collected from two rivers located in Assis, SP, Brazil and calculated the WQI by the conventional method. UV-Vis spectral analyses between 190 and 800 nm were also performed for each sample followed by principal component analysis (PCA) aiming to reduce the number of variables. The scores of the principal components were used as input to calibrate a three-layer feed-forward neural network. Output layer was defined by the WQI values. The modeling efforts showed that the optimal ANN architecture was 19-16-1, trainlm as training function, root-mean-square error (RMSE) 0.5813, determination coefficient between observed and predicted values (R2) of 0.9857 (p < 0.0001), and mean absolute percentage error (MAPE) of 0.57% ± 0.51%. The implications of this work's results open up the possibility to use a portable UV-Vis spectrophotometer connected to a computer to predict the WQI in places where there is no required infrastructure to determine the WQI by the conventional method as well as to monitor water body's in real time.
Collapse
Affiliation(s)
- Edson Marcelino Alves
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil.
| | - Ramon Juliano Rodrigues
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Caroline Dos Santos Corrêa
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Tiago Fidemann
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - José Celso Rocha
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - José Leonel Lemos Buzzo
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Pedro de Oliva Neto
- Departamento de Ciências Biológicas, Universidade Estadual Paulista "Júlio de Mesquita Filho" Campus - Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC, Avenida dos Estados, 5001, Santo Andre, SP, 09210-580, Brazil
| |
Collapse
|
12
|
Fidemann T, de Araujo Pereira GA, Bossard Nascimento L, Moraes MC, Bertão MR, da Silva RMG, Fernández Núñez EG. Holistic protocol for callus culture optimization using statistical modelling. Nat Prod Res 2017; 32:1109-1117. [PMID: 28956460 DOI: 10.1080/14786419.2017.1380026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Plants endue a key role against illnesses caused by oxidative stress. These attributes are frequently associated with polyphenolic compounds. However, presence and concentration of secondary metabolites are affected by abiotic factors. The in vitro culture techniques can solve these drawbacks. Peppers can be a suitable alternative to obtain polyphenols. Aiming to optimise the callus culture stage from Capsicum baccatum to produce polyphenols, this work evaluated systemically the effects of the explant's origin (root, hypocotyl and cotyledon), growth hormone type (2,4-dichlorophenoxyacetic acid (2,4-D), benzylaminopurine (BAP) and a combination of 2,4-D/BAP at five-to-one ratio) and concentration (0.023-10.000 mg L-1) on callus culture efficiency parameters using a multilevel factorial design. The root explant in combination with BAP at 1.138 mg L-1 ensured the optimal values of the assessed responses; callus mass (225.03 mg), antioxidant activity (35.95%), total phenols (11.48 mg of GAE/g DE) and flavonoids (15.92 mg of RU/g DE) production.
Collapse
Affiliation(s)
- Tiago Fidemann
- a Faculdade de Ciências e Letras, Departamento de Biotecnologia , Universidade Estadual Paulista (UNESP) , Assis , Brazil
| | | | - Lia Bossard Nascimento
- a Faculdade de Ciências e Letras, Departamento de Biotecnologia , Universidade Estadual Paulista (UNESP) , Assis , Brazil
| | - Milena Cristina Moraes
- a Faculdade de Ciências e Letras, Departamento de Biotecnologia , Universidade Estadual Paulista (UNESP) , Assis , Brazil
| | - Mônica Rosa Bertão
- a Faculdade de Ciências e Letras, Departamento de Biotecnologia , Universidade Estadual Paulista (UNESP) , Assis , Brazil
| | | | | |
Collapse
|
13
|
Coelho de Oliveira H, Elias da Cunha Filho JC, Rocha JC, Fernández Núñez EG. Rapid monitoring of beer-quality attributes based on UV-Vis spectral data. International Journal of Food Properties 2017. [DOI: 10.1080/10942912.2017.1352602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | - José Celso Rocha
- Departamento de Ciências Biológicas, Universidade Estadual Paulista-UNESP/Assis, Assis, SP, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Departamento de Ciências Biológicas, Universidade Estadual Paulista-UNESP/Assis, Assis, SP, Brazil
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC, Santo André, SP, Brazil
| |
Collapse
|
14
|
Nunes LV, de Barros Correa FF, de Oliva Neto P, Mayer CRM, Escaramboni B, Campioni TS, de Barros NR, Herculano RD, Fernández Núñez EG. Lactic acid production from submerged fermentation of broken rice using undefined mixed culture. World J Microbiol Biotechnol 2017; 33:79. [PMID: 28341908 DOI: 10.1007/s11274-017-2240-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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] [Received: 11/01/2016] [Accepted: 03/06/2017] [Indexed: 10/19/2022]
Abstract
The present work aimed to characterize and optimize the submerged fermentation of broken rice for lactic acid (LA) production using undefined mixed culture from dewatered activated sludge. A microorganism with amylolytic activity, which also produces LA, Lactobacillus amylovorus, was used as a control to assess the extent of mixed culture on LA yield. Three level full factorial designs were performed to optimize and define the influence of fermentation temperature (20-50 °C), gelatinization time (30-60 min) and broken rice concentration in culture medium (40-80 g L-1) on LA production in pure and undefined mixed culture. LA production in mixed culture (9.76 g L-1) increased in sixfold respect to pure culture in optimal assessed experimental conditions. The optimal conditions for maximizing LA yield in mixed culture bioprocess were 31 °C temperature, 45 min gelatinization time and 79 g L-1 broken rice concentration in culture medium. This study demonstrated the positive effect of undefined mixed culture from dewatered activated sludge to produce LA from culture medium formulated with broken rice. In addition, this work establishes the basis for an efficient and low-cost bioprocess to manufacture LA from this booming agro-industrial by-product.
Collapse
Affiliation(s)
- Luiza Varela Nunes
- Grupo de Engenharia de Bioprocessos, Departamento de Ciências Biológicas, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Fabiane Fernanda de Barros Correa
- Laboratório de Biotecnologia Industrial, Departamento de Biotecnologia, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Pedro de Oliva Neto
- Laboratório de Biotecnologia Industrial, Departamento de Biotecnologia, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Cassia Roberta Malacrida Mayer
- Laboratório de Química de Alimentos e Nanobiotecnologia, Departamento de Biotecnologia, Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus-Assis, Avenida Dom Antonio 2100, Bairro Parque Universitário, Assis, SP, 19806-900, Brazil
| | - Bruna Escaramboni
- Laboratório de Biotecnologia Industrial, Departamento de Biotecnologia, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Tania Sila Campioni
- Laboratório de Biotecnologia Industrial, Departamento de Biotecnologia, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil
| | - Natan Roberto de Barros
- Instituo de Química - Araraquara, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Araraquara, Rua Professor Francisco Degni, 55, Araraquara, SP, 14800-900, Brazil
| | - Rondinelli Donizetti Herculano
- Instituo de Química - Araraquara, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Araraquara, Rua Professor Francisco Degni, 55, Araraquara, SP, 14800-900, Brazil
| | - Eutimio Gustavo Fernández Núñez
- Grupo de Engenharia de Bioprocessos, Departamento de Ciências Biológicas, Universidade Estadual Paulista 'Júlio de Mesquita Filho' Campus-Assis, Avenida Dom Antônio, 2100, Assis, SP, 19806-900, Brazil.
- Centro de Ciências Naturais e Humanas (CCNH), Universidade Federal do ABC, Avenida dos Estados, 5001, Santo André, SP, 09210-580, Brazil.
| |
Collapse
|
15
|
Barchi AC, Ito S, Escaramboni B, Neto PDO, Herculano RD, Romeiro Miranda MC, Passalia FJ, Rocha JC, Fernández Núñez EG. Artificial intelligence approach based on near-infrared spectral data for monitoring of solid-state fermentation. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.07.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
16
|
Buenno LH, Rocha JC, Leme J, Caricati CP, Tonso A, Fernández Núñez EG. Use of uniform designs in combination with neural networks for viral infection process development. Biotechnol Prog 2015; 31:532-40. [DOI: 10.1002/btpr.2051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Revised: 12/20/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Laís Hara Buenno
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
| | - José Celso Rocha
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
| | - Jaci Leme
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan; Av. Vital Brasil, 1500 05503-900 São Paulo SP-Brazil
| | - Celso Pereira Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan; Av. Vital Brasil, 1500 05503-900 São Paulo SP-Brazil
| | - Aldo Tonso
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica; Universidade de São Paulo; Av. Prof. Luciano Gualberto, trav. 3, 380 05508-900 São Paulo SP-Brazil
| | - Eutimio Gustavo Fernández Núñez
- Departamento de Ciências Biológicas; Universidade Estadual “Júlio de Mesquita Filho” Campus-Assis; Avenida Dom Antonio 2100 19806-900 Assis SP-Brasil
- Laboratório de Células Animais, Departamento de Engenharia Química, Escola Politécnica; Universidade de São Paulo; Av. Prof. Luciano Gualberto, trav. 3, 380 05508-900 São Paulo SP-Brazil
| |
Collapse
|
17
|
Leme J, Fernández Núñez EG, de Almeida Parizotto L, Chagas WA, dos Santos ES, Caricati ATP, de Rezende AG, da Costa BLV, Monteiro DCV, Boldorini VLL, Jorge SAC, Astray RM, Pereira CA, Caricati CP, Tonso A. A multivariate calibration procedure for UV/VIS spectrometric monitoring of BHK-21 cell metabolism and growth. Biotechnol Prog 2013; 30:241-8. [DOI: 10.1002/btpr.1847] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jaci Leme
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Eutimio Gustavo Fernández Núñez
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Dept. de Ciências Biológicas; Universidade Estadual Paulista “Júlio de Mesquita Filho” Campus-Assis, Avenida Dom Antonio 2100, Bairro Parque Universitário; 19806-900 Assis SP - Brasil
| | - Letícia de Almeida Parizotto
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
| | - Wagner Antonio Chagas
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Erica Salla dos Santos
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Aline Tojeira Prestia Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | | | - Bruno Labate Vale da Costa
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Laboratório de Biotecnologia Industrial, Núcleo de Bionanomanufatura; Instituto de Pesquisas Tecnológicas do Estado de São Paulo, Av. Prof. Almeida Prado 532 Cid. Universitária - Butantã; 05508-901 São Paulo SP-Brazil
| | | | - Vera Lucia Lopes Boldorini
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Soraia Attie Calil Jorge
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Renato Mancini Astray
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Carlos Augusto Pereira
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
- Laboratório de Imunologia Viral; Instituto Butantan. Av. Vital Brasil; 1500 Butantã 05503-900 São Paulo SP-Brazil
| | - Celso Pereira Caricati
- Laboratório Especial de Pesquisa e Desenvolvimento em Imunológicos Veterinários, Instituto Butantan. Av. Vital Brasil, 1500; Butantã 05503-900 São Paulo SP-Brazil
| | - Aldo Tonso
- Dept. de Engenharia Química, Laboratório de Células Animais, Escola Politécnica; Universidade de São Paulo. Av. Prof. Luciano Gualberto; trav. 3, 380, Butantã 05508-900 São Paulo SP-Brazil
| |
Collapse
|
18
|
Núñez EGF, de Oliveira EA, da Silva NG, de Oliveira Filho RS. Combining dose and injection volume for good performance of a specific radiopharmaceutical for sentinel node detection. Nucl Med Biol 2012; 39:145-53. [DOI: 10.1016/j.nucmedbio.2011.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Revised: 07/09/2011] [Accepted: 07/12/2011] [Indexed: 11/30/2022]
|
19
|
Núñez EGF, Teodoro R, Wiecek DP, da Silva NG, Martinelli JR, de Oliveira Filho RS. Size and specificity of radiopharmaceuticals for sentinel lymph node detection. Acta Radiol 2011; 52:774-8. [PMID: 21558148 DOI: 10.1258/ar.2011.100506] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Biological performance of radiotracers for sentinel node detection analyzed in the light of molecular design and dimension is not widely available. PURPOSE To evaluate the effect of dextran molecular size and the presence of tissue-binding units (mannose) within the model of (99m)Tc-carbonyl conjugate for sentinel lymph node detection. MATERIAL AND METHODS Four dextran conjugates with and without mannose in the chemical backbone were included. All polymers were radiolabeled using the precursor [(99m)Tc(OH(2))(3)(CO)(3)](+). Radiolabeling conditions targeted the best radiochemical purity and specific activity for each radiopharmaceutical, and partition coefficients were also defined. Lymphoscintigraphy and ex-vivo biodistribution in popliteal lymph node, liver and kidneys were performed in Wistar rats. The effects of molecular weight and mannose presence were assessed by a two-level factorial design. RESULTS Radiochemical purity was indirectly related to molecular weight and presence of mannose in the polymer structure. All products were able to detect popliteal lymph node, however, uptake was strongly influenced by use of mannose (4-fold higher). Excretion was similarly modulated by differences in molecular weight. Mannose-enhanced lymph node uptake and higher molecule size in the range under study benefitted lymphoscintigraphic performance. CONCLUSION Screening of radiopharmaceuticals for lymphoscintigraphy might improve with attention to the mentioned physico-chemical features of the molecule.
Collapse
Affiliation(s)
| | | | | | - Natanael Gomes da Silva
- Center of Materials Science and Technology, Institute of Energetic and Nuclear Research, Sao Paulo
| | - Jose Roberto Martinelli
- Center of Materials Science and Technology, Institute of Energetic and Nuclear Research, Sao Paulo
| | | |
Collapse
|
20
|
Teodoro R, Faintuch BL, Núñez EGF, Queiróz RG. Neurotensin(8-13) analogue: radiolabeling and biological evaluation using different chelators. Nucl Med Biol 2010; 38:113-20. [PMID: 21220134 DOI: 10.1016/j.nucmedbio.2010.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 06/01/2010] [Accepted: 06/14/2010] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Several strategies on the development of radiopharmaceuticals have been employed. Bifunctional chelators seem to be a promising approach since high radiochemical yields as well as good in vitro and in vivo stability have been achieved. To date, neurotensin analogs have been radiolabeled using the (99m)Tc-carbonyl approach and none was described employing the bifunctional chelating agent technique. AIM The purpose of this study was to evaluate the radiochemical and biological behaviour of NT(8-13) analogue radiolabeled with (99m)Tc, using HYNIC and NHS-S-acetyl-MAG(3) as chelator agents. METHODS Radiolabeling, in vitro stability toward cysteine and glutathione, partition coefficient and plasma protein binding were assessed for both radioconjugates. Biodistribution in healthy Swiss mice were carried out in order to evaluate the biological behaviour of the radiocomplexes. RESULTS Radiochemical yields were higher than 97% and no apparent instability toward transchelant agents was observed for both radioconjugates. A higher lipophilic character was observed for the radioconjugate labeled via MAG(3). The chelators seem to have no effect on the percentage of the radioconjugate bound to plasma proteins. A similar biological pattern was observed for both radioconjugates. Total blood, bone and muscle values revealed a slightly slower clearance for the radiocomplex labeled via MAG(3). Moreover, a remarkable liver and intestinal uptake was observed for the radiocomplex labeled via MAG(3) even at the later time points studied. CONCLUSION The high radiochemical yields achieved and the similar in vivo pattern found for both radioconjugates make them potential candidates for imaging tumors using nuclear medicine techniques.
Collapse
Affiliation(s)
- Rodrigo Teodoro
- Center of Radiopharmacy, Institute of Energetic and Nuclear Research, Sao Paulo, SP 05508-000, Brazil.
| | | | | | | |
Collapse
|