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Freire RP, Hernandez-Gonzalez JE, Lima ER, Suzuki MF, de Oliveira JE, Torai LS, Bartolini P, Soares CRJ. Molecular Cloning and AlphaFold Modeling of Thyrotropin (ag-TSH) From the Amazonian Fish Pirarucu ( Arapaima gigas). Bioinform Biol Insights 2023; 17:11779322231154148. [PMID: 36798082 PMCID: PMC9926385 DOI: 10.1177/11779322231154148] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 01/14/2023] [Indexed: 02/17/2023] Open
Abstract
Arapaima gigas, known as Pirarucu in Brazil, is one of the largest freshwater fish in the world. Some individuals could reach 3 m in length and weight up to 200 kg. Due to extinction risks and its economic value, the species has been a focus for preservation and reproduction studies. Thyrotropin (TSH) is a glycoprotein hormone formed by 2 subunits α and β whose main activity is related to the synthesis of thyroid hormones (THs)-T3 and T4. In this work, we present a combination of bioinformatics tools to identify Arapaima gigas βTSH (ag-βTSH), modeling its molecular structure and express the recombinant heterodimer form in mammalian cells. Using the combination of computational biology, based on genome-related information, in silico molecular cloning and modeling led to confirm results of the ag-βTSH sequence by reverse transcriptase-polymerase chain reaction (RT-PCR) and transient expression in human embryonic kidney (HEK293F) cells. Molecular cloning of ag-βTSH retrieved 146 amino acids with a signal peptide of 21 amino acid residues and 6 disulfide bonds. The sequence has a similarity to 39 fish species, ranging between 43.1% and 81.6%, whose domains are extremely conserved, such as cystine knot motif and N-glycosylation site. The Arapaima gigas thyrotropin (ag-TSH) model, solved by AlphaFold, was used in molecular dynamics simulations with Scleropages formosus receptor, providing similar values of free energy ΔGbind and ΔGPMF in comparison with Homo sapiens model. The recombinant expression in HEK293F cells reached a yield of 25 mg/L, characterized via chromatographic and physical-chemical techniques. This work shows that other Arapaima gigas proteins could be studied in a similar way, using the combination of these techniques, recovering more information from its genome and improving the reproduction and preservation of this prehistoric fish.
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Affiliation(s)
- Renan Passos Freire
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), São Paulo, Brazil
| | - Jorge Enrique Hernandez-Gonzalez
- Instituto de Biociências, Letras e Ciências Exatas (IBILCE), Universidade Estadual Paulista “Júlio de Mesquita Filho” (UNESP), São Paulo, Brazil
| | - Eliana Rosa Lima
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), São Paulo, Brazil
| | | | | | | | - Paolo Bartolini
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), São Paulo, Brazil
| | - Carlos Roberto Jorge Soares
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), São Paulo, Brazil
- Carlos Roberto Jorge Soares, Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo SP 05508-000, Brazil.
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Lima ER, Freire RP, Suzuki MF, Oliveira JE, Yosidaki VL, Peroni CN, Sevilhano T, Zorzeto M, Torati LS, Soares CRJ, Lima IDDM, Kronenberger T, Maltarollo VG, Bartolini P. Isolation and Characterization of the Arapaima gigas Growth Hormone (ag-GH) cDNA and Three-Dimensional Modeling of This Hormone in Comparison with the Human Hormone (hGH). Biomolecules 2023; 13:158. [PMID: 36671542 PMCID: PMC9855374 DOI: 10.3390/biom13010158] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/15/2022] [Accepted: 12/30/2022] [Indexed: 01/15/2023] Open
Abstract
In a previous work, the common gonadotrophic hormone α-subunit (ag-GTHα), the ag-FSH β- and ag-LH β-subunit cDNAs, were isolated and characterized by our research group from A. gigas pituitaries, while a preliminary synthesis of ag-FSH was also carried out in human embryonic kidney 293 (HEK293) cells. In the present work, the cDNA sequence encoding the ag-growth hormone (ag-GH) has also been isolated from the same giant Arapaimidae Amazonian fish. The ag-GH consists of 208 amino acids with a putative 23 amino acid signal peptide and a 185 amino acid mature peptide. The highest identity, based on the amino acid sequences, was found with the Elopiformes (82.0%), followed by Anguilliformes (79.7%) and Acipenseriformes (74.5%). The identity with the corresponding human GH (hGH) amino acid sequence is remarkable (44.8%), and the two disulfide bonds present in both sequences were perfectly conserved. Three-dimensional (3D) models of ag-GH, in comparison with hGH, were generated using the threading modeling method followed by molecular dynamics. Our simulations suggest that the two proteins have similar structural properties without major conformational changes under the simulated conditions, even though they are separated from each other by a >100 Myr evolutionary period (1 Myr = 1 million years). The sequence found will be used for the biotechnological synthesis of ag-GH while the ag-GH cDNA obtained will be utilized for preliminary Gene Therapy studies.
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Affiliation(s)
- Eliana Rosa Lima
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Renan Passos Freire
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Miriam Fussae Suzuki
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - João Ezequiel Oliveira
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Vanessa Luna Yosidaki
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Cibele Nunes Peroni
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Thaís Sevilhano
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Moisés Zorzeto
- Piscicultura Raça, Canabrava do Norte 78658-000, MT, Brazil
| | - Lucas Simon Torati
- EMBRAPA Pesca e Aquicultura, Loteamento Água Fria, Palmas 77008-900, TO, Brazil
| | - Carlos Roberto Jorge Soares
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
| | - Igor Daniel de Miranda Lima
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Av. Presidente Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - Thales Kronenberger
- Institute of Pharmacy, Pharmaceutical and Medicinal Chemistry and Tübingen Center for Academic Drug Discovery, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
- Department of Oncology and Pneumonology, Internal Medicine VIII, University Hospital Tübingen, Otfried-Müller-Straße 10, DE, 72076 Tübingen, Germany
- Tübingen Center for Academic Drug Discovery & Development (TüCAD2), 72076 Tübingen, Germany
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, 70211 Kuopio, Finland
| | - Vinicius Gonçalves Maltarollo
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais (UFMG), Av. Presidente Antônio Carlos, 6627, Belo Horizonte 31270-901, MG, Brazil
| | - Paolo Bartolini
- Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, São Paulo 05508-000, SP, Brazil
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Neri BR, Parente ARJ, Lima ER, Almeida MFB, Picanço MBM, Filho PEBM, Carvalho TR, Santiago VR. ANÁLISE DA ALTERAÇÃO DO D-DÍMERO EM PACIENTES COM COVID-19. Hematol Transfus Cell Ther 2021. [PMCID: PMC8530623 DOI: 10.1016/j.htct.2021.10.406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Objetivos Em março de 2020, foi descrito pelas autoridades de saúde brasileiras os primeiros casos de infecção pelo SARS-CoV-2, vírus responsável pela Covid-19, no Brasil. Desde então, houve uma intensa mobilização científica para descobrir cada vez mais sobre a doença e suas consequências a curto e longo prazo. Sob esse aspecto, levantou-se a hipótese de uma relação entre o aumento de marcadores da coagulação, como o d-dímero, e a severidade da doença. Diante disso, o presente estudo tem como intuito realizar uma revisão literária sobre as alterações da dosagem do d-dímero observadas em pacientes com Covid-19. Materiais e métodos Foi realizado um estudo de revisão bibliográfica a partir da análise de 9 artigos científicos publicados entre os anos de 2020 e 2021. Os materiais foram selecionados utilizando os seguintes critérios de inclusão: abordagem do tema e disponibilidade em acesso aberto. Assim, foram selecionados 3 artigos na base de dados do PubMed, utilizando como termos de pesquisa: “Covid-19” e “Fibrin Fibrinogen Degradation Products”, terminologias de acordo com o sistema de Descritores em Ciências da Saúde (DeCS). Resultados De acordo com a literatura, a Covid-19, hoje reconhecida como uma desordem sistêmica e não mais somente uma síndrome respiratória aguda, pode levar à indução de um estado pró-trombótico. Nesse viés, segundo literatura, foi observado que a dosagem do d-dímero, produto de degradação da fibrina, era maior nos pacientes que não sobreviveram. Assim, pôde-se perceber que os níveis de d-dímero em pacientes hospitalizados com a doença é diretamente proporcional à mortalidade pela infecção, e o risco já se torna significativamente maior quando os níveis de d-dímero estão acima de 1,0 mg/L. Por isso, o d-dímero pode ser considerado um fator preditor independente da morte de pacientes hospitalizados com Covid-19, assim como a idade e coagulopatia evidenciada por exames, como o Tempo de Protrombina (TP) prolongado. Discussão Essa relação é explicada, por exemplo, porque o SARS-CoV-2 é responsável pela ativação de uma tempestade de citocinas, capaz de ativar fatores de coagulação e levar a um estado pró-trombótico. Além disso, um outro mecanismo responsável por essa ativação da castata de coagulação é o aumento da concentração de Angiotensina-2 (Ang2) ainda no início da doença, devido à inibição do Enzima Conversora de Angiotensina 2 (ECA2) causada pela infecção do SARS-CoV-2, e consequente interrupção do metabolismo da Ang2, levando ao seu acúmulo no plasma. Por esses e outros achados, hoje é considerada uma doença de desordem sistêmica. Conclusão A Covid-19 é uma patologia sistêmica que pode alterar a hemostasia humana, levando o paciente a um grave estado pró-trombótico. Dessa forma, de acordo com a literatura, esse desequilíbrio está associado a um aumento da mortalidade dessa doença, diretamente proporcional à dosagem do d-dímero à admissão hospitalar.
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Rosa Lima E, Regina Cecchi C, Higuti E, Protasio Pacheco de Jesus G, Moura Gomes A, Aparecido Zacarias E, Bartolini P, Nunes Peroni C. Optimization of Mouse Growth Hormone Plasmid DNA Electrotransfer into Tibialis Cranialis Muscle of "Little" Mice. Molecules 2020; 25:molecules25215034. [PMID: 33142961 PMCID: PMC7662792 DOI: 10.3390/molecules25215034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 10/17/2020] [Indexed: 11/16/2022]
Abstract
Previous non-viral gene therapy was directed towards two animal models of dwarfism: Immunodeficient (lit/scid) and immunocompetent (lit/lit) dwarf mice. The former, based on hGH DNA administration into muscle, performed better, while the latter, a homologous model based on mGH DNA, was less efficient, though recommended as useful for pre-clinical assays. We have now improved the growth parameters aiming at a complete recovery of the lit/lit phenotype. Electrotransfer was based on three pulses of 375 V/cm of 25 ms each, after mGH-DNA administration into two sites of each non-exposed tibialis cranialis muscle. A 36-day bioassay, performed using 60-day old lit/lit mice, provided the highest GH circulatory levels we have ever obtained for GH non-viral gene therapy: 14.7 ± 3.7 ng mGH/mL. These levels, at the end of the experiment, were 8.5 ± 2.3 ng/mL, i.e., significantly higher than those of the positive control (4.5 ± 1.5 ng/mL). The catch-up growth reached 40.9% for body weight, 38.2% for body length and 82.6%–76.9% for femur length. The catch-up in terms of the mIGF-1 levels remained low, increasing from the previous value of 5.9% to the actual 8.5%. Although a complete phenotypic recovery was not obtained, it should be possible starting with much younger animals and/or increasing the number of injection sites.
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Affiliation(s)
- Eliana Rosa Lima
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
| | - Claudia Regina Cecchi
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
- Translational Neuropsychiatry Unit, Department of Clinical Medicine, Aarhus University, 8000 Aarhus, Denmark
| | - Eliza Higuti
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
- Biotechnology Quality Control Laboratory, Butantan Institute, 05503-900 São Paulo, SP, Brazil
| | - Gustavo Protasio Pacheco de Jesus
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
| | - Alissandra Moura Gomes
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
| | - Enio Aparecido Zacarias
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
| | - Paolo Bartolini
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
| | - Cibele Nunes Peroni
- Biotechnology Center, Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN), Cidade Universitária, 05508-000 São Paulo, SP, Brazil; (E.R.L.); (C.R.C.); (E.H.); (G.P.P.d.J.); (A.M.G.); (E.A.Z.); (P.B.)
- Correspondence: ; Tel.: +55-11-2810-5855
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Suzuki MF, Oliveira JE, Damiani R, Lima ER, Amaral KC, Santos AMDS, Magalhães GS, Faverani LP, Pereira LAVD, Silva FM, Bartolini P. Human bone morphogenetic protein-2 (hBMP-2) characterization by physical-chemical, immunological and biological assays. AMB Express 2020; 10:34. [PMID: 32067115 PMCID: PMC7026339 DOI: 10.1186/s13568-020-0964-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/27/2020] [Indexed: 11/18/2022] Open
Abstract
Commercially available preparations of methionyl-human BMP-2 and CHO-derived hBMP-2, which belongs to the transforming growth factor β (TGF-β) superfamily, were used for a complete characterization. This protein is an extremely efficient osteoinductor that plays an important role during bone regeneration and embryonic development. Characterization was carried out via SDS-PAGE and Western blotting, followed by reversed-phase HPLC, size-exclusion HPLC and MALDI-TOF-MS. The classical in vitro bioassay, based on the induction of alkaline phosphatase activity in C2C12 cells, confirmed that hBMP-2 biological activity is mostly related to the dimeric form, being ~ 4-fold higher for the CHO-derived glycosylated form when compared with the E. coli counterpart. The E. coli-derived met-hBMP-2 has shown, by MALDI-TOF-MS, a large presence of the bioactive dimer. A more complex molecular mass (MM) distribution was found for the CHO-derived product, whose exact MM has never been reported because of its variable glycosylation. A method based on RP-HPLC was set up, allowing a quantitative and qualitative hBMP-2 determination even directly on ongoing culture media. Considering that hBMP-2 is highly unstable, presenting moreover an extremely high aggregate value, we believe that these data pave the way to a necessary characterization of this important factor when synthesized by DNA recombinant techniques in different types of hosts.
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Cecchi CR, Higuti E, Lima ER, Vieira DP, Squair PL, Peroni CN, Bartolini P. Efficient Non-Invasive Plasmid-DNA Administration into Tibialis Cranialis Muscle of "Little" Mice. Curr Mol Med 2018; 17:230-235. [PMID: 28730965 DOI: 10.2174/1566524017666170721152119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/09/2017] [Revised: 07/14/2017] [Accepted: 07/18/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND An alternative treatment for growth hormone deficiency based on hGH-DNA administration, followed by electro gene transfer, was investigated by injecting the plasmid into surgically exposed or non-exposed quadriceps or tibialis muscle of immunodeficient "little" mice. METHODS An optimization of electrotransfer conditions via a new combination of high/low voltage pulses is presented. After 3 days, serum hGH was determined and in a 28-day assay, the relative growth parameters were compared. RESULTS Both groups exhibited similar results: 5.0 ± 2.2 (SD) and 3.5 ± 0.9 ng hGH/ml (P>0.05; n=7) for the exposed quadriceps and non-exposed tibialis treatments, respectively. The final body weight increases were 16.1% for the quadriceps and 18.9% for the tibialis group. The tail and nose-to-tail length increases were 4.5% and 7.1% for the quadriceps and 4.8 and 4.6% for the tibialis group. The right and left femur length increases, obtained from radiographic measurements, were 16.9% and 12.7% for the quadriceps and 19.4% and 12.3% for the tibialis, respectively. A non-significant difference between exposed quadriceps and non-exposed tibialis treatments (P=0.48) was confirmed via a completely integrated statistical analysis. Circulating mIGF-1 levels were 126 ± 47, 106 ± 93 (P>0.05) and 38 ± 15 ng/ml for the quadriceps, tibialis and saline treatments, respectively. CONCLUSION These results show that hGH-DNA administration into non-exposed tibialis muscle followed by the new HV/LV electrotransfer protocol was an equally efficient, less traumatic treatment, much more suitable for pre-clinical testing than administration into exposed quadriceps.
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Affiliation(s)
- C R Cecchi
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Av. Prof. Lineu Prestes 2242, 05508-000, Sao Paulo, SP. Brazil
| | - E Higuti
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
| | - E R Lima
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
| | - D P Vieira
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
| | - P L Squair
- Radiopharmacy Center, Instituto de Pesquisas/ Energeticas e Nucleares (IPENCNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
| | - C N Peroni
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
| | - P Bartolini
- Biotechnology Center, Instituto de Pesquisas Energeticas e Nucleares (IPEN-CNEN), Cidade Universitaria, Sao Paulo, SP. Brazil
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Sant'Ana PM, Oliveira JE, Lima ER, Soares CRJ, Peroni CN, Bartolini P, Ribela MTCP. Human thyroid-stimulating hormone synthesis in human embryonic kidney cells and related N-glycoprofiling analysis for carbohydrate composition determination. Appl Microbiol Biotechnol 2017; 102:1215-1228. [PMID: 29247366 DOI: 10.1007/s00253-017-8684-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 09/18/2017] [Revised: 11/27/2017] [Accepted: 11/29/2017] [Indexed: 12/01/2022]
Abstract
A strain of embryonic human kidney cells (HEK293) was transiently co-transfected with the expression vectors coding for the α- and β-subunits of human thyroid-stimulating hormone (hTSH), and, for the first time, a human cell-derived recombinant hTSH was synthesized and extensively characterized. The purification strategy involving two steps provided an overall yield of 55% and a purity level > 90%. The purified material (hTSH-HEK) was analyzed and compared to a CHO-derived recombinant preparation (hTSH-CHO) and to a pituitary-derived (hTSH-Pit) preparation. The three preparations showed an equivalent purity (> 95%) with a hTSH-HEK molecular mass 2.1% lower than that of hTSH-CHO and 2.7% higher than that of hTSH-Pit. Remarkable differences were found in the carbohydrate moiety, the lowest sialic acid content and highest fucose content being observed in hTSH-HEK. In vivo biological activity was confirmed for the three preparations, the hTSH-HEK bioactivity being 39 and 16% lower than those of hTSH-CHO and hTSH-Pit, respectively. The hTSH-HEK circulatory half-life (t 1/2) was also shorter than those of hTSH-CHO (1.5-fold) and hTSH-Pit (1.2-fold). According to these findings, HEK-293-derived hTSH can be considered to be useful for clinical applications, in view as well of its human origin and particular carbohydrate composition.
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Affiliation(s)
- P M Sant'Ana
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - J E Oliveira
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - E R Lima
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - C R J Soares
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - C N Peroni
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - P Bartolini
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil
| | - Maria Teresa C P Ribela
- Biotechnology Department, IPEN-CNEN, Av. Prof. Lineu Prestes 2242, Cidade Universitária, São Paulo, SP, 05508-900, Brazil.
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Xavier AREO, Lima ER, Oliveira AME, Cardoso L, Santos J, Cangussu CHC, Leite LN, Quirino MCL, Júnior IGC, Oliveira DA, Xavier MAS. Genetic diversity of Bacillus sp producers of amylase isolated from the soil. Genet Mol Res 2017; 16:gmr-16-03-gmr.16039771. [PMID: 28973750 DOI: 10.4238/gmr16039771] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The microorganisms are the best source of extracellular enzymes since they allow an economical technology with low-resource consumption compared to animals and plants. The amylases are among the most important enzymes being the genus Bacillus one of the most investigated due to its ability to produce this enzyme. The objective of this study was to isolate and analyze the genetic diversity among bacteria of the genus Bacillus sp producer of amylase originated from the soil. To this end, soil samples were collected and submitted to the condition of extreme temperature. The serial dilution procedure followed by seeding on solid medium containing starch was used for isolation of strains that produce amylase. The microorganisms isolated were subjected to standard morphological methods for presumptive identification of the genus Bacillus. The PCR assay with the universal genetic marker 16S rDNA was used for confirmation of bacterial strain. All the 10 isolates presumptively identified as bacteria amplified a fragment of 370 bp corresponding to the 16S rDNA gene. The enzymatic activity was expressed as an enzymatic index (EI), after 24 h of incubation. All isolate producers of amylase exhibited EI ≥ 2.0. The determination of the genetic profile and the clonal relationship among the isolates were performed by the method of ERIC-PCR polymorphism. The isolates of Bacillus spp were divided into 2 groups (I and II). Through this method, the discriminatory capacity of this analysis of polymorphisms was verified in differing producer strains from those not producing amylase.
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Affiliation(s)
- A R E O Xavier
- Laboratório de Bioprospecção e Recursos Genéticos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros, Centro de Ciências Biológicas e da Saúde, Laboratório de Bioprospecção e Recursos Genéticos, , Brasil .,Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - E R Lima
- Laboratório de Bioprospecção e Recursos Genéticos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros, Centro de Ciências Biológicas e da Saúde, Laboratório de Bioprospecção e Recursos Genéticos, , Brasil
| | | | - L Cardoso
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - J Santos
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - C H C Cangussu
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - L N Leite
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - M C L Quirino
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - I G C Júnior
- Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
| | - D A Oliveira
- Laboratório de Bioprospecção e Recursos Genéticos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros, Centro de Ciências Biológicas e da Saúde, Laboratório de Bioprospecção e Recursos Genéticos, , Brasil
| | - M A S Xavier
- Laboratório de Bioprospecção e Recursos Genéticos, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros, Centro de Ciências Biológicas e da Saúde, Laboratório de Bioprospecção e Recursos Genéticos, , Brasil.,Laboratório de Microbiologia, Centro de Ciências Biológicas e da Saúde, , , Brasil
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9
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Silva AB, Silva T, Franco ES, Rabelo SA, Lima ER, Mota RA, da Câmara CAG, Pontes-Filho NT, Lima-Filho JV. Antibacterial activity, chemical composition, and cytotoxicity of leaf's essential oil from brazilian pepper tree (schinus terebinthifolius, raddi). Braz J Microbiol 2010; 41:158-63. [PMID: 24031476 PMCID: PMC3768621 DOI: 10.1590/s1517-838220100001000023] [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] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2009] [Revised: 04/27/2009] [Accepted: 08/23/2009] [Indexed: 11/22/2022] Open
Abstract
The antibacterial potential of leaf’s essential oil (EO) from Brazilian pepper tree (Schinus terebinthifolius Raddi) against staphylococcal isolates from dogs with otitis externa was evaluated. The minimum inhibitory concentration of EO ranged from 78.1 to 1,250 μg/mL. The oil was analyzed by GC and GC/MS and cytotoxicity tests were carried out with laboratory animals.
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Affiliation(s)
- A B Silva
- Departamento de Biologia , Universidade Federal Rural de Pernambuco , Recife, PE, Brasil
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10
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Magalhães STV, Guedes RNC, Demuner AJ, Lima ER. Effect of coffee alkaloids and phenolics on egg-laying by the coffee leaf miner Leucoptera coffeella. Bull Entomol Res 2008; 98:483-489. [PMID: 18826664 DOI: 10.1017/s0007485308005804] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The recognized importance of coffee alkaloids and phenolics mediating insect-plant interactions led to the present investigation aiming to test the hypothesis that the phenolics chlorogenic and caffeic acids and the alkaloid caffeine and some of its derivatives present in coffee leaves affect egg-laying by the coffee leaf miner Leucoptera (=Perileucoptera) coffeella (Guérin-Méneville & Perrottet) (Lepidoptera: Lyonetiidae), one of the main coffee pests in the Neotropical region. These phytochemicals were, therefore, quantified in leaves from 12 coffee genotypes and their effect on the egg-laying preference by the coffee leaf miner was assessed. Canonical variate analysis and partial canonical correlation provided evidence that increased leaf levels of caffeine favour egg-laying by the coffee leaf miner. An egg-laying preference bioassay was, therefore, carried out to specifically test this hypothesis using increasing caffeine concentrations sprayed on leaves of one of the coffee genotypes with the lowest level of this compound (i.e. Hybrid UFV 557-04 generated from a cross between Coffea racemosa Lour. and C. arabica L.). The results obtained allowed the recognition of a significant concentration-response relationship, providing support for the hypothesis that caffeine stimulates egg-laying by the coffee leaf miner in coffee leaves.
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Affiliation(s)
- S T V Magalhães
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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11
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Souza DJ, Della Lucia TMC, Errard C, Richard FJ, Lima ER. Behavioural and chemical studies of discrimination processes in the leaf-cutting ant Acromyrmex laticeps nigrosetosus (Forel, 1908). BRAZ J BIOL 2007; 66:863-71. [PMID: 17119834 DOI: 10.1590/s1519-69842006000500012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 05/24/2004] [Accepted: 08/11/2004] [Indexed: 11/22/2022] Open
Abstract
Leaf-cutting ants live in symbiosis with a basidiomycete fungus that is exploited as a source of nutrients for ant larvae. Tests of brood transport revealed that Acromyrmex laticeps nigrosetosus workers did not discriminate a concolonial brood from an alien brood. The same result was observed with tests of fungus transport. Adult workers showed no aggressive behaviour to workers from other alien colonies (non-nestmates). There was no qualitative variation in the chemical profiles of larvae, pupae and adult workers from the different colonies. However, quantitative differences were observed between the different colonies. Hypotheses about the lack of intraspecific aggression in this subspecies of ants are discussed.
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Affiliation(s)
- D J Souza
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, MG, Brazil
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Abstract
Com a finalidade de avaliar o grau de exposição ao monóxido de carbono da população da cidade de São Paulo (Brasil), foram coletadas 327 amostras de sangue de adultos, procedendo-se à determinação do conteúdo de carboxiemoglobina pela técnica espectrofotométrica. Trinta das amostras obtidas de residentes de uma cidade (Embú-Guaçu) considerada, por suas características, como local de baixas concentrações de monóxido de carbono, foram tomadas como grupo-controle. Os valores de carboxiemoglobina encontrados foram os seguintes: policiais de trânsito: fumantes 6,3 ± 2,07, não fumantes 2,1 ± 0,68; motoristas de ônibus: fumantes 4,6 ± 1,94, não fumantes 1,6 ± 0,46; grupo-controle: fumantes 3,8 ± 1,74, não fumantes 0,8 ± 0,21.
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