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Rodrigues SCH, Menezes HC, Gomes DA, Cardeal ZL. Impact of exposure to atmospheric particulate matter in human skin-derived fibroblast cells: A metabolomics approach for the class of amino acids based on GC×GC-Q-TOFMS/MS. Journal of Hazardous Materials 2024; 461:132606. [PMID: 37742378 DOI: 10.1016/j.jhazmat.2023.132606] [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: 07/20/2023] [Revised: 09/11/2023] [Accepted: 09/20/2023] [Indexed: 09/26/2023]
Abstract
The particulate matter (PM) in the air comprises particles containing a complex mixture of pollutants associated with various environmental and public health disturbances. However, studies related to the effects of PM on the skin are still incipient. In this work, the toxicity of particulate material to fibroblast cells derived from the human dermis was investigated using metabolomic analysis for the class of amino acids. For the analysis of amino acids, a new method with high selectivity and resolution based on comprehensive two-dimensional gas chromatography coupled to mass spectrometry (GC×GC-Q-TOFMS/MS) was developed and validated. The exposure impact of PM up to 2.5 µm (PM2.5) on fibroblast cells was shown to be dose-dependent. Metabolomics results indicated that amino acid levels and metabolic pathways in fibroblasts were significantly affected by PM2.5. Given the results, it was possible to correlate these effects to a series of responses, including decreased cellular energy, dysregulation of cellular homeostasis, decreased collagen synthesis, interference with wound healing, and suppression of protein biosynthesis. ENVIRONMENTAL IMPLICATION: Although some progress has been made in air pollution control, the health risk related to PM2.5 exposure remains important. The effects of air pollution on the skin have been extensively studied. However, few studies are related to the impact of PM2.5 on the skin. This study determines the profile of amino acids from fibroblast cells exposed to PM2.5, providing new insight into the damage to skin cells from atmospheric pollution.
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Affiliation(s)
- Samantha C H Rodrigues
- Universidade Federal de Minas Gerais, Departamento de Química-ICEx, Av. Antônio Carlos, 6627 Belo Horizonte, Minas Gerais, Brazil
| | - Helvécio C Menezes
- Universidade Federal de Minas Gerais, Departamento de Química-ICEx, Av. Antônio Carlos, 6627 Belo Horizonte, Minas Gerais, Brazil
| | - Dawidson A Gomes
- Universidade Federal de Minas Gerais, Instituto de Ciências Biológicas/ICB, Av. Antônio Carlos, 6627 Belo Horizonte, Minas Gerais, Brazil
| | - Zenilda L Cardeal
- Universidade Federal de Minas Gerais, Departamento de Química-ICEx, Av. Antônio Carlos, 6627 Belo Horizonte, Minas Gerais, Brazil.
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Mansur AAP, Rodrigues MA, Capanema NSV, Carvalho SM, Gomes DA, Mansur HS. Functionalized bioadhesion-enhanced carboxymethyl cellulose/polyvinyl alcohol hybrid hydrogels for chronic wound dressing applications. RSC Adv 2023; 13:13156-13168. [PMID: 37124005 PMCID: PMC10140670 DOI: 10.1039/d3ra01519j] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 04/21/2023] [Indexed: 05/02/2023] Open
Abstract
Wounds produced by trauma, burns, and chronic diseases cause millions of patients to suffer discomfort, pain, and, in many cases, disability and death, leading to enormous health, social and financial impacts globally. Regrettably, current clinical treatments for chronic wounds remain unsatisfactory. Thus, this study reports for the first time the design, development, and synthesis of chemically biofunctionalized hybrid hydrogels made of carboxymethyl cellulose (CMC) and poly(vinyl alcohol) (PVA) crosslinked by citric acid using an entirely biocompatible and green process. They demonstrated suitable physicochemical properties, cytocompatibility, and hemocompatibility to be applied as a smart wound dressing for skin tissue engineering. These novel hybrids were biofunctionalized with l-arginine and RGD peptide through carbodiimide mediated-amide formation to promote bioadhesion of fibroblast and keratinocyte cells as a potential enhancement for wound healing and skin tissue engineering applications.
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Affiliation(s)
- A A P Mansur
- Department of Metallurgical and Materials Engineering, Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Federal University of Minas Gerais Av. Antônio Carlos 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, 31.270-901 Belo Horizonte MG Brazil +55-31-34091843
| | - M A Rodrigues
- Department of Biochemistry and Immunology, Federal University of Minas Gerais Brazil
| | - N S V Capanema
- Department of Metallurgical and Materials Engineering, Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Federal University of Minas Gerais Av. Antônio Carlos 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, 31.270-901 Belo Horizonte MG Brazil +55-31-34091843
| | - S M Carvalho
- Department of Metallurgical and Materials Engineering, Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Federal University of Minas Gerais Av. Antônio Carlos 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, 31.270-901 Belo Horizonte MG Brazil +55-31-34091843
| | - D A Gomes
- Department of Biochemistry and Immunology, Federal University of Minas Gerais Brazil
| | - H S Mansur
- Department of Metallurgical and Materials Engineering, Center of Nanoscience, Nanotechnology and Innovation - CeNano2I, Federal University of Minas Gerais Av. Antônio Carlos 6627 - Escola de Engenharia, Bloco 2 - Sala 2233, 31.270-901 Belo Horizonte MG Brazil +55-31-34091843
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3
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Rodrigues MA, Gomes DA, Fiorotto R, Guerra MT, Weerachayaphorn J, Bo T, Sessa WC, Strazzabosco M, Nathanson MH. Molecular determinants of peri-apical targeting of inositol 1,4,5-trisphosphate receptor type 3 in cholangiocytes. Hepatol Commun 2022; 6:2748-2764. [PMID: 35852334 PMCID: PMC9512452 DOI: 10.1002/hep4.2042] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 06/03/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022] Open
Abstract
Fluid and bicarbonate secretion is a principal function of cholangiocytes, and impaired secretion results in cholestasis. Cholangiocyte secretion depends on peri-apical expression of the type 3 inositol trisphosphate receptor (ITPR3), and loss of this intracellular Ca2+ release channel is a final common event in most cholangiopathies. Here we investigated the mechanism by which ITPR3 localizes to the apical region to regulate secretion. Isolated bile duct units, primary mouse cholangiocytes, and polarized Madin-Darby canine kidney (MDCK) cells were examined using a combination of biochemical and fluorescence microscopy techniques to investigate the mechanism of ITPR3 targeting to the apical region. Apical localization of ITPR3 depended on the presence of intact lipid rafts as well as interactions with both caveolin 1 (CAV1) and myosin heavy chain 9 (MYH9). Chemical disruption of lipid rafts or knockdown of CAV1 or MYH9 redistributed ITPR3 away from the apical region. MYH9 interacted with the five c-terminal amino acids of the ITPR3 peptide. Disruption of lipid rafts impaired Ca2+ signaling, and absence of CAV1 impaired both Ca2+ signaling and fluid secretion. Conclusion: A cooperative mechanism involving MYH9, CAV1, and apical lipid rafts localize ITPR3 to the apical region to regulate Ca2+ signaling and secretion in cholangiocytes.
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Affiliation(s)
- Michele A. Rodrigues
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
- Department of Biochemistry and ImmunologyFederal University of Minas Gerais (UFMG)Belo HorizonteMGBrazil
| | - Dawidson A. Gomes
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
- Department of Biochemistry and ImmunologyFederal University of Minas Gerais (UFMG)Belo HorizonteMGBrazil
| | - Romina Fiorotto
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | - Mateus T. Guerra
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | | | - Tao Bo
- Department of Pharmacology and Program in Vascular Cell Signaling and TherapeuticsYale University School of MedicineNew HavenConnecticutUSA
| | - William C. Sessa
- Department of Pharmacology and Program in Vascular Cell Signaling and TherapeuticsYale University School of MedicineNew HavenConnecticutUSA
| | - Mario Strazzabosco
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
| | - Michael H. Nathanson
- Section of Digestive Diseases, Internal MedicineYale UniversityNew HavenConnecticutUSA
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Rodrigues MA, Gomes DA, Cosme AL, Sanches MD, Resende V, Cassali GD. Inositol 1,4,5-trisphosphate receptor type 3 (ITPR3) is overexpressed in cholangiocarcinoma and its expression correlates with S100 calcium-binding protein A4 (S100A4). Biomed Pharmacother 2022; 145:112403. [PMID: 34798470 PMCID: PMC8678364 DOI: 10.1016/j.biopha.2021.112403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 08/16/2021] [Revised: 10/31/2021] [Accepted: 11/03/2021] [Indexed: 01/03/2023] Open
Abstract
Cholangiocarcinoma (CCA) is the second most malignant neoplasm in the liver that arises from the biliary tree. CCA is associated with a poor prognosis, and the key players involved in its pathogenesis are still not well understood. Receptor tyrosine kinases (RTKs), such as epidermal growth factor receptor (EGFR), can mediate intracellular calcium (Ca2+) signaling pathways via inositol 1,4,5-trisphosphate (InsP3), activating inositol 1,4,5-trisphosphate receptors (ITPRs) and regulating tumor growth. ITPR isoform 3 (ITPR3) is the main intracellular Ca2+ release channel in cholangiocytes. The effects of intracellular Ca2+ are mediated by calcium-binding proteins such as Calmodulin and S100 calcium-binding protein A4 (S100A4). However, the clinicopathological and biological significance of EGFR, ITPR3 and S100A4 in CCA remains unclear. Thus, the present work investigates the immunoexpression of these three proteins in 59 CCAs from patients who underwent curative surgical treatment and correlates the data with clinicopathological features and survival. High ITPR3 expression was correlated with CA 19-9 levels, TNM stage and lymph node metastasis (N). Furthermore, ITPR3 expression was increased in distal CCA compared to control bile ducts and intrahepatic and perihilar CCAs. These observations were confirmed by proteomic analysis. ITPR3 and S100A4 clinical scores were significantly correlated. Furthermore, it was demonstrated that EGF induces calcium signaling in a cholangiocarcinoma cell line and ITPR3 colocalizes with nonmuscle myosin IIA (NMIIA). In summary, ITPR3 overexpression could contribute to CCA progression and it may represent a potential therapeutic target.
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Affiliation(s)
- Michele A. Rodrigues
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Dawidson A. Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Ana Luiza Cosme
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Marcelo Dias Sanches
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil.,Hepatopancreatobiliary Division, Clinical Hospital, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 110, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Vivian Resende
- School of Medicine, Department of Surgery, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 190, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil.,Hepatopancreatobiliary Division, Clinical Hospital, Universidade Federal de Minas Gerais, Av. Prof. Alfredo Balena 110, Belo Horizonte, Minas Gerais, CEP: 30130-100, Brazil
| | - Geovanni D. Cassali
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil.,Corresponding author: Department of General Pathology, Instituto de Ciências Biológicas, Bloco C3, Sala 102, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627 Belo Horizonte–MG, Brazil 31270-901. Tel: +55 31 34092891.
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Rodrigues MA, Caldeira-Brant AL, Gomes DA, Silveira TL, Chiarini-Garcia H, Cassali GD. Characterization of neoplastic cells outlining the cystic space of invasive micropapillary carcinoma of the canine mammary gland. BMC Vet Res 2021; 17:130. [PMID: 33761962 PMCID: PMC7992814 DOI: 10.1186/s12917-021-02807-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 02/19/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Invasive micropapillary carcinoma (IMPC) is a rare malignant breast tumor and a variant form of invasive ductal carcinoma that is an aggressive neoplasm of the human breast and canine mammary gland. The importance of the tumor microenvironment in cancer development has gradually been recognized, but little is known about the cell types outlining the cystic space of canine IMPC. This study aimed to characterize the neoplastic cells outlining the cystic space of IMPC. RESULTS Immunohistochemistry (IHC), immunofluorescence (IF), superresolution and transmission electron microscopy (TEM) were used to assess the cell types in the cystic areas of IMPCs. Cells expressing the mesenchymal markers alpha-smooth muscle actin (αSMA), Vimentin, and S100A4 outlined the cystic space of IMPC. Furthermore, loss of epithelial cell polarity in IMPC was shown by the localization of MUC1 at the stroma-facing surface. This protein modulates lumen formation and inhibits the cell-stroma interaction. Immunohistochemical and IF staining for the myoepithelial cell marker p63 were negative in IMPC samples. Furthermore, associated with peculiar morphology, such as thin cytoplasmic extensions outlining cystic spaces, was observed under TEM. These observations suggested cells with characteristics of myoepithelial-like cells. CONCLUSIONS The cells outlining the cystic space of IMPC in the canine mammary gland were characterized using IHC, IF and TEM. The presence of cells expressing αSMA, Vimentin, and S100A4 in the IMPC stroma suggested a role for tumor-associated fibroblasts in the IMPC microenvironment. The reversal of cell polarity revealed by the limited basal localization of MUC1 may be an important factor contributing to the invasiveness of IMPC. For the first time, the cystic space of canine mammary gland IMPC was shown to be delimited by myoepithelial-like cells that had lost p63 expression. These findings may enhance our understanding of the cellular microenvironment of invasive tumors to improve cancer diagnosis and treatment.
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Affiliation(s)
- Michele A Rodrigues
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Andre L Caldeira-Brant
- Department of Morphology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Tatiany L Silveira
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Hélio Chiarini-Garcia
- Department of Morphology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil
| | - Geovanni D Cassali
- Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, Minas Gerais, CEP: 31270-901, Brazil.
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Katchborian-Neto A, Santos WT, Nicácio KJ, Corrêa JOA, Murgu M, Martins TMM, Gomes DA, Goes AM, Soares MG, Dias DF, Chagas-Paula DA, Paula ACC. Neuroprotective potential of Ayahuasca and untargeted metabolomics analyses: applicability to Parkinson's disease. J Ethnopharmacol 2020; 255:112743. [PMID: 32171895 DOI: 10.1016/j.jep.2020.112743] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [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: 08/31/2019] [Revised: 02/18/2020] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGY RELEVANCE Ayahuasca is a tea produced through decoction of Amazonian plants. It has been used for centuries by indigenous people of South America. The beverage is considered to be an ethnomedicine, and it is traditionally used for the treatment of a wide range of diseases, including neurological illness. Besides, some scientific evidence suggests it may be applicable to Parkinson's disease (PD) treatment. Thus, Ayahuasca deserves in depth studies to clarify its potential role in this disease. AIM OF THE STUDY This study aimed to use an untargeted metabolomics approach to evaluate the neuroprotective potential of the Ayahuasca beverage, the extracts from its matrix plants (Banisteriopsis caapi and Psychotria viridis), its fractions and its main alkaloids on the viability of SH-SY5Y neuroblastoma cells in an in vitro PD model. MATERIAL AND METHODS The cytotoxicity of Ayahuasca, crude extracts, and fractions of B. caapi and P. viridis, as well as neuroprotection promoted by these samples in a 6-hydroxydopamine (6-OHDA)-induced neurodegeneration model, were evaluated by the MTT assay at two time-points: 48 h (T1) and 72 h (T2). The main alkaloids from Ayahuasca matrix plants, harmine (HRE) and N,N-dimethyltryptamine (DMT), were also isolated and evaluated. An untargeted metabolomics approach was developed to explore the chemical composition of samples with neuroprotective activity. Ultra-Performance Liquid Chromatography coupled to Electrospray Ionisation and Time-of-Flight (UPLC-ESI-TOF) metabolome data was treated and further analysed using multivariate statistical analyses (MSA): principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA). The metabolites were dereplicated using the Dictionary of Natural Products and an in house database. The main alkaloids were also quantified by UPLC-MS/MS. RESULTS The samples did not cause cytotoxicity in vitro and three of samples intensely increased cell viability at T1. The crude extracts, alkaloid fractions and HRE demonstrated remarkable neuroprotective effect at T2 while the hydroalcoholic fractions demonstrated this neuroprotective effect at T1 and T2. Several compounds from different classes, such as β-carbolines and monoterpene indole alkaloids (MIAs) were revealed correlated with this property by MSA. Additionally, a total of 2419 compounds were detected in both ionisation modes. HRE showed potent neuroprotective action at 72 h, but it was not among the metabolites positively correlated with the most efficacious neuroprotective profile at either time (T1 and T2). Furthermore, DMT was statistically important to differentiate the dataset (VIP value > 1), although it did not exhibit sufficient neuroprotective activity by in vitro assay, neither a positive correlation with T1 and T2 neuroprotective profile, which corroborated the MSA results. CONCLUSION The lower doses of the active samples stimulated neuronal cell proliferation and/or displayed the most efficacious neuroprotection profile, namely by preventing neuronal damage and improving cell viability against 6-OHDA-induced toxicity. Intriguingly, the hydroalcoholic fractions exhibited enhanced neuroprotective effects when compared to other samples and isolated alkaloids. This finding corroborates the significance of a holistic approach. The results demonstrate that Ayahuasca and its base plants have potential applicability for PD treatment and to prevent its progression differently from current drugs to treat PD.
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Affiliation(s)
- Albert Katchborian-Neto
- Chemistry Institute, Federal University of Alfenas, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Wanderleya T Santos
- School of Pharmacy, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, Minas Gerais, Brazil
| | - Karen J Nicácio
- Chemistry Institute, Federal University of Alfenas, 37130-001, Alfenas, Minas Gerais, Brazil
| | - José O A Corrêa
- School of Pharmacy, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, Minas Gerais, Brazil
| | - Michael Murgu
- Waters Corporation, Alameda Tocantins 125, 27th Floor, Alphaville, 06455-020, São Paulo, São Paulo, Brazil
| | - Thaís M M Martins
- Biological Sciences Institute, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Dawidson A Gomes
- Biological Sciences Institute, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Alfredo M Goes
- Biological Sciences Institute, Federal University of Minas Gerais, 31270-901, Belo Horizonte, Minas Gerais, Brazil
| | - Marisi G Soares
- Chemistry Institute, Federal University of Alfenas, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Danielle F Dias
- Chemistry Institute, Federal University of Alfenas, 37130-001, Alfenas, Minas Gerais, Brazil
| | - Daniela A Chagas-Paula
- Chemistry Institute, Federal University of Alfenas, 37130-001, Alfenas, Minas Gerais, Brazil.
| | - Ana C C Paula
- School of Pharmacy, Federal University of Juiz de Fora, 36036-900, Juiz de Fora, Minas Gerais, Brazil.
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Ueasilamongkol P, Khamphaya T, Guerra MT, Rodrigues M, Gomes DA, Kong Y, Wei W, Jain D, Trampert DC, Ananthanarayanan M, Banales JM, Roberts LR, Farshidfar F, Nathanson MH, Weerachayaphorn J. Type 3 Inositol 1,4,5-Trisphosphate Receptor Is Increased and Enhances Malignant Properties in Cholangiocarcinoma. Hepatology 2020; 71:583-599. [PMID: 31251815 PMCID: PMC6934938 DOI: 10.1002/hep.30839] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 06/17/2019] [Indexed: 12/12/2022]
Abstract
Cholangiocarcinoma (CCA) is the second most common malignancy arising in the liver. It carries a poor prognosis, in part because its pathogenesis is not well understood. The type 3 inositol 1,4,5-trisphosphate receptor (ITPR3) is the principal intracellular calcium ion (Ca2+ ) release channel in cholangiocytes, and its increased expression has been related to the pathogenesis of malignancies in other types of tissues, so we investigated its role in CCA. ITPR3 expression was increased in both hilar and intrahepatic CCA samples as well as in CCA cell lines. Deletion of ITPR3 from CCA cells impaired proliferation and cell migration. A bioinformatic analysis suggested that overexpression of ITPR3 in CCA would have a mitochondrial phenotype, so this was also examined. ITPR3 normally is concentrated in a subapical region of endoplasmic reticulum (ER) in cholangiocytes, but both immunogold electron microscopy and super-resolution microscopy showed that ITPR3 in CCA cells was also in regions of ER in close association with mitochondria. Deletion of ITPR3 from these cells impaired mitochondrial Ca2+ signaling and led to cell death. Conclusion: ITPR3 expression in cholangiocytes becomes enhanced in CCA. This contributes to malignant features, including cell proliferation and migration and enhanced mitochondrial Ca2+ signaling.
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Affiliation(s)
| | - Tanaporn Khamphaya
- Toxicology Graduate Program, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Mateus T. Guerra
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Michele Rodrigues
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Dawidson A. Gomes
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Yong Kong
- Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut, USA
| | - Wei Wei
- Department of Biostatistics, Yale University School of Public Health, New Haven, Connecticut, USA
| | - Dhanpat Jain
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - David C. Trampert
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA
| | | | - Jesus M. Banales
- Department of Liver and Gastrointestinal Diseases, Biodonostia Research Institute, Donostia University Hospital, University of the Basque Country (UPV/EHU), CIBERehd, Ikerbasque, San Sebastian, Spain
| | - Lewis R. Roberts
- Divisions of Gastroenterology and Hepatology and Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
| | - Farshad Farshidfar
- Department of Oncology, Cumming School of Medicine, University of Calgary, Arnie Charbonneau Cancer Institute, University of Calgary, Calgary, Canada
| | - Michael H. Nathanson
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA,Corresponding authors: Michael H. Nathanson, M.D., Ph.D., Department of Medicine, Section of Digestive Diseases, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06519, USA. Phone: (+1) 203-785-5610; Fax: (+1) 203-785-7273, , Jittima Weerachayaphorn, Ph.D., Department of Physiology, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400 Thailand. Phone: (+66) 2201-5620; Fax: (+66) 2354-7154, ,
| | - Jittima Weerachayaphorn
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand,Section of Digestive Diseases, Yale University School of Medicine, New Haven, Connecticut, USA,Corresponding authors: Michael H. Nathanson, M.D., Ph.D., Department of Medicine, Section of Digestive Diseases, Yale University School of Medicine, 333 Cedar Street, New Haven, CT, 06519, USA. Phone: (+1) 203-785-5610; Fax: (+1) 203-785-7273, , Jittima Weerachayaphorn, Ph.D., Department of Physiology, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400 Thailand. Phone: (+66) 2201-5620; Fax: (+66) 2354-7154, ,
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Cabral TC, Ardisson JD, de Miranda MC, Gomes DA, Fernandez-Outon LE, Sousa EM, Ferreira TH. Boron nitride nanotube@NiFe 2O 4: a highly efficient system for magnetohyperthermia therapy. Nanomedicine (Lond) 2019; 14:3075-3088. [PMID: 31797726 DOI: 10.2217/nnm-2019-0123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim: The field of nanotechnology promotes the development of innovative and more effective cancer therapies. This work is aimed to develop a hybrid system that combines the capacity of boron nitride nanotubes (BNNTs) to be internalized by tumor cells and the ability of nickel ferrite nanoparticles to efficiently release heat by induced AC magnetic heating. Materials & methods: The systems studied were characterized by using x-ray diffractometry, transmission electron microscopy, vibrating sample magnetometry and Mössbauer spectroscopy. Results: The ferrite nanoparticles attached to BNNT were able to achieve the required temperatures for magnetohyperthermia therapies. After cellular internalization, AC induced magnetic heating of BNNT@NiFe2O4 can kill almost 80% of Hela cells lineage in a single cycle. Conclusion: This system can be a highly efficient magnetohyperthermia agent in cancer therapy.
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Affiliation(s)
- Thaylice Cs Cabral
- SENAN, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte, MG, Brasil
| | - José D Ardisson
- SENAN, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte, MG, Brasil
| | | | - Dawidson A Gomes
- Departamento de Bioquímica e Imunologia, ICB, UFMG, Belo Horizonte, MG, Brasil
| | - Luis E Fernandez-Outon
- SENAN, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte, MG, Brasil.,Departamento de Física, ICEX, UFMG, Belo Horizonte, MG, Brasil
| | - Edésia Mb Sousa
- SENAN, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte, MG, Brasil
| | - Tiago H Ferreira
- SENAN, Centro de Desenvolvimento da Tecnologia Nuclear, CDTN/CNEN, Belo Horizonte, MG, Brasil
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9
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de Miranda MC, Rodrigues MA, de Angelis Campos AC, Faria JAQA, Kunrath-Lima M, Mignery GA, Schechtman D, Goes AM, Nathanson MH, Gomes DA. Epidermal growth factor (EGF) triggers nuclear calcium signaling through the intranuclear phospholipase Cδ-4 (PLCδ4). J Biol Chem 2019; 294:16650-16662. [PMID: 31537645 DOI: 10.1074/jbc.ra118.006961] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 12/17/2018] [Revised: 09/10/2019] [Indexed: 02/06/2023] Open
Abstract
Calcium (Ca2+) signaling within the cell nucleus regulates specific cellular events such as gene transcription and cell proliferation. Nuclear and cytosolic Ca2+ levels can be independently regulated, and nuclear translocation of receptor tyrosine kinases (RTKs) is one way to locally activate signaling cascades within the nucleus. Nuclear RTKs, including the epidermal growth factor receptor (EGFR), are important for processes such as transcriptional regulation, DNA-damage repair, and cancer therapy resistance. RTKs can hydrolyze phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) within the nucleus, leading to Ca2+ release from the nucleoplasmic reticulum by inositol 1,4,5-trisphosphate receptors. PI(4,5)P2 hydrolysis is mediated by phospholipase C (PLC). However, it is unknown which nuclear PLC isoform is triggered by EGFR. Here, using subcellular fractionation, immunoblotting and fluorescence, siRNA-based gene knockdowns, and FRET-based biosensor reporter assays, we investigated the role of PLCδ4 in epidermal growth factor (EGF)-induced nuclear Ca2+ signaling and downstream events. We found that EGF-induced Ca2+ signals are inhibited when translocation of EGFR is impaired. Nuclear Ca2+ signals also were reduced by selectively buffering inositol 1,4,5-trisphosphate (InsP3) within the nucleus. EGF induced hydrolysis of nuclear PI(4,5)P2 by the intranuclear PLCδ4, rather than by PLCγ1. Moreover, protein kinase C, a downstream target of EGF, was active in the nucleus of stimulated cells. Furthermore, PLCδ4 and InsP3 modulated cell cycle progression by regulating the expression of cyclins A and B1. These results provide evidence that EGF-induced nuclear signaling is mediated by nuclear PLCδ4 and suggest new therapeutic targets to modulate the proliferative effects of this growth factor.
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Affiliation(s)
- Marcelo Coutinho de Miranda
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil.,Section of Digestive Diseases, Internal Medicine, Yale University, New Haven, Connecticut 06520-8056
| | - Michele Angela Rodrigues
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil.,Section of Digestive Diseases, Internal Medicine, Yale University, New Haven, Connecticut 06520-8056
| | - Ana Carolina de Angelis Campos
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil.,Section of Digestive Diseases, Internal Medicine, Yale University, New Haven, Connecticut 06520-8056
| | | | - Marianna Kunrath-Lima
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil
| | - Gregory A Mignery
- Department of Cell and Molecular Physiology, Stritch School of Medicine, Loyola University Chicago, Maywood, Illinois 60153
| | - Deborah Schechtman
- Department of Biochemistry, University of São Paulo, Av. Professor Lineu Prestes, 748, São Paulo-SP 05508-900, Brazil
| | - Alfredo Miranda Goes
- Department of Pathology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil
| | - Michael H Nathanson
- Section of Digestive Diseases, Internal Medicine, Yale University, New Haven, Connecticut 06520-8056
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais (UFMG), Av. Antonio Carlos, 6627 Belo Horizonte-MG, 31270-901, Brazil .,Section of Digestive Diseases, Internal Medicine, Yale University, New Haven, Connecticut 06520-8056
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10
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Ribeiro PA, Dias DS, Lage DP, Martins VT, Costa LE, Santos TT, Ramos FF, Tavares GS, Mendonça DV, Ludolf F, Gomes DA, Rodrigues MA, Chávez-Fumagalli MA, Silva ES, Galdino AS, Duarte MC, Roatt BM, Menezes-Souza D, Teixeira AL, Coelho EA. Immunogenicity and protective efficacy of a new Leishmania hypothetical protein applied as a DNA vaccine or in a recombinant form against Leishmania infantum infection. Mol Immunol 2019; 106:108-118. [DOI: 10.1016/j.molimm.2018.12.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 09/01/2018] [Accepted: 12/21/2018] [Indexed: 01/02/2023]
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11
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Moreira TG, Horta LS, Gomes-Santos AC, Oliveira RP, Queiroz NMGP, Mangani D, Daniel B, Vieira AT, Liu S, Rodrigues AM, Gomes DA, Gabriely G, Ferreira E, Weiner HL, Rezende RM, Nagy L, Faria AMC. CLA-supplemented diet accelerates experimental colorectal cancer by inducing TGF-β-producing macrophages and T cells. Mucosal Immunol 2019; 12:188-199. [PMID: 30279515 DOI: 10.1038/s41385-018-0090-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/24/2018] [Accepted: 09/07/2018] [Indexed: 02/07/2023]
Abstract
Conjugated linoleic acid (CLA) has been shown to activate the nuclear receptor PPAR-γ and modulate metabolic and immune functions. Despite the worldwide use of CLA dietary supplementation, strong scientific evidence for its proposed beneficial actions are missing. We found that CLA-supplemented diet reduced mucosal damage and inflammatory infiltrate in the dextran sodium sulfate (DSS)-induced colitis model. Conditional deletion of PPAR-γ in macrophages from mice supplemented with CLA diet resulted in loss of this protective effect of CLA, suggesting a PPAR-γ-dependent mechanism mediated by macrophages. However, CLA supplementation significantly worsened colorectal tumor formation induced by azoxymethane and DSS by inducing macrophage and T-cell-producing TGF-β via PPAR-γ activation. Accordingly, either macrophage-specific deletion of PPAR-γ or in vivo neutralization of latency-associated peptide (LAP, a membrane-bound TGF-β)-expressing cells abrogated the protumorigenic effect of CLA. Thus, the anti-inflammatory properties of CLA are associated with prevention of colitis but also with development of colorectal cancer.
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Affiliation(s)
- T G Moreira
- Departamento de Alimentos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Campus Pampulha, 31270-901, Belo Horizonte, MG, Brazil. .,Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. .,Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. .,Department of Biochemistry and Molecular Biology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
| | - L S Horta
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - A C Gomes-Santos
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - R P Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - N M G P Queiroz
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D Mangani
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - B Daniel
- Department of Biochemistry and Molecular Biology, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.,Department of Medicine, School of Medicine, Johns Hopkins All Children's Hospital, Johns Hopkins University, St. Petersburg, FL, 33701, USA
| | - A T Vieira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - S Liu
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - A M Rodrigues
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D A Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - G Gabriely
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - E Ferreira
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - H L Weiner
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - R M Rezende
- Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - L Nagy
- Diabetes and Obesity Research Center, Sanford Burnham Medical Research Institute, Lake Nona, Orlando, FL, USA.,Department of Medicine, School of Medicine, Johns Hopkins All Children's Hospital, Johns Hopkins University, St. Petersburg, FL, 33701, USA
| | - A M C Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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12
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Ferreira TH, Faria JAQA, Gonzalez IJ, Outon LEF, Macedo WAA, Gomes DA, Sousa EMB. BNNT/Fe₃O₄ System as an Efficient Tool for Magnetohyperthermia Therapy. J Nanosci Nanotechnol 2018; 18:6746-6755. [PMID: 29954490 DOI: 10.1166/jnn.2018.15514] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanostructured materials have been widely studied aiming to biomedical applications, primarily for the purpose of carrying drugs or molecules of interest in a selected tissue or organ. In this context, boron nitride nanotubes (BNNTs), when functionalized with specific moieties, could be useful as nanovectors for delivery of proteins, drugs, and also RNAi molecules, due to their capacity to be uptaked by cells. The introduction of magnetic nanoparticles allows the use of such system as a hyperthermia agent. Thus, once it has been targeted to tumor areas, it could kill cancer cells by magnetohyperthermia therapy. In order to study this effect, magnetite nanoparticles were incorporated into hydroxilated BNNT. The system was characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and vibrating sample magnetometry (VSM). The results obtained show that magnetite nanoparticles are linked to the nanotubes. Magnetic measurements show that coercivity and magnetization were not disturbed after incorporation to the BNNT. Based on this, a new methodology for in vitro magnetohyperthermia experiments was developed, aiming to treat each cell group individually preserving its sterility. The biological assays of the system demonstrate its good cell viability and the great potential of this nanomaterial as a magnetohyperthermia agent for cancer treatment.
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13
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Camargo TP, Neves A, Peralta RA, Chaves C, Maia ECP, Lizarazo-Jaimes EH, Gomes DA, Bortolotto T, Norberto DR, Terenzi H, Tierney DL, Schenk G. Second-Sphere Effects in Dinuclear FeIIIZnII Hydrolase Biomimetics: Tuning Binding and Reactivity Properties. Inorg Chem 2017; 57:187-203. [DOI: 10.1021/acs.inorgchem.7b02384] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - David L. Tierney
- Department
of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States,
| | - Gerhard Schenk
- School
of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
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14
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Rossette MC, Moraes DC, Sacramento EK, Romano-Silva MA, Carvalho JL, Gomes DA, Caldas H, Friedman E, Bastos-Rodrigues L, De Marco L. The In Vitro and In Vivo Antiangiogenic Effects of Flavokawain B. Phytother Res 2017; 31:1607-1613. [PMID: 28816367 DOI: 10.1002/ptr.5891] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/27/2017] [Accepted: 07/21/2017] [Indexed: 12/20/2022]
Abstract
Angiogenesis is implicated in the development of a variety of pathological processes, most commonly cancer. It is essential for tumor growth and metastasis, making it an important cancer therapeutic target. Naturally occurring substances have led to the discovery of anticancer agents. Flavokawain B (FKB), a chalcone isolated from the root extracts of kava-kava plant, inhibits proliferation and causes apoptosis in vitro and in vivo of various cancer cell lines. The antimetastatic potential of FKB has also been suggested. In our study, we confirm the antiangiogenic action of FKB in vitro and, for the first time, demonstrate its strong antiangiogenic activity in vivo, using a zebrafish model. Our data show that FKB inhibits human brain endothelial cell (HUVEC) migration and tube formation even at very low and non-toxic concentrations. Moreover, FKB blocks angiogenesis process in zebrafish, with a dramatic reduction of subintestinal vein formation in a dose-dependent manner. Flavokawain B at the concentration of 2.5 μg/mL did not exhibit any toxic effects in zebrafish larvae and caused a markedly or complete obliteration of subintestinal vein formation. Our findings along with previously published data confirm that FKB may form the basis for creating an additional tool in the treatment of cancer and other neovascularization-related diseases. Copyright © 2017 John Wiley & Sons, Ltd.
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Affiliation(s)
- Mariana C Rossette
- Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Débora C Moraes
- Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Erika K Sacramento
- Department of Mental Health, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Juliana L Carvalho
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Hanna Caldas
- Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Eitan Friedman
- The Susanne Levy Gertner Oncogenetics Unit, Chaim Sheba Medical Center, Tel-Hashomer, and the Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Luciana Bastos-Rodrigues
- Department of Basic Sciences, Universidade Federal de Juiz de Fora, Governador Valadares, Brazil
| | - Luiz De Marco
- Department of Surgery, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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15
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Ferreira TH, Miranda MC, Rocha Z, Leal AS, Gomes DA, Sousa EMB. An Assessment of the Potential Use of BNNTs for Boron Neutron Capture Therapy. Nanomaterials (Basel) 2017; 7:nano7040082. [PMID: 28417903 PMCID: PMC5408174 DOI: 10.3390/nano7040082] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/03/2017] [Accepted: 04/04/2017] [Indexed: 12/29/2022]
Abstract
Currently, nanostructured compounds have been standing out for their optical, mechanical, and chemical features and for the possibilities of manipulation and regulation of complex biological processes. One of these compounds is boron nitride nanotubes (BNNTs), which are a nanostructured material analog to carbon nanotubes, but formed of nitrogen and boron atoms. BNNTs present high thermal stability along with high chemical inertia. Among biological applications, its biocompatibility, cellular uptake, and functionalization potential can be highlighted, in addition to its eased utilization due to its nanometric size and tumor cell internalization. When it comes to new forms of therapy, we can draw attention to boron neutron capture therapy (BNCT), an experimental radiotherapy characterized by a boron-10 isotope carrier inside the target and a thermal neutron beam focused on it. The activation of the boron-10 atom by a neutron generates a lithium atom, a gamma ray, and an alpha particle, which can be used to destroy tumor tissues. The aim of this work was to use BNNTs as a boron-10 carrier for BNCT and to demonstrate its potential. The nanomaterial was characterized through XRD, FTIR, and SEM. The WST-8 assay was performed to confirm the cell viability of BNNTs. The cells treated with BNNTs were irradiated with the neutron beam of a Triga reactor, and the apoptosis caused by the activation of the BNNTs was measured with a calcein AM/propidium iodide test. The results demonstrate that this nanomaterial is a promising candidate for cancer therapy through BNCT.
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Affiliation(s)
- Tiago H Ferreira
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
| | - Marcelo C Miranda
- Departamento de Bioquímica e Imunologia-ICB-UFMG, Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
| | - Zildete Rocha
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
| | - Alexandre S Leal
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
| | - Dawidson A Gomes
- Departamento de Bioquímica e Imunologia-ICB-UFMG, Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
| | - Edesia M B Sousa
- Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Avenida Presidente Antônio Carlos, 6627 Pampulha, Belo Horizonte 31270-901, MG, Brazil.
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16
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Cerqueira PG, Passos-Silva DG, Vieira-da-Rocha JP, Mendes IC, de Oliveira KA, Oliveira CFB, Vilela LFF, Nagem RAP, Cardoso J, Nardelli SC, Krieger MA, Franco GR, Macedo AM, Pena SDJ, Schenkman S, Gomes DA, Guerra-Sá R, Machado CR. Effect of ionizing radiation exposure on Trypanosoma cruzi ubiquitin-proteasome system. Mol Biochem Parasitol 2017; 212:55-67. [PMID: 28137628 DOI: 10.1016/j.molbiopara.2017.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 06/30/2016] [Revised: 12/24/2016] [Accepted: 01/24/2017] [Indexed: 10/20/2022]
Abstract
In recent years, proteasome involvement in the damage response induced by ionizing radiation (IR) became evident. However, whether proteasome plays a direct or indirect role in IR-induced damage response still unclear. Trypanosoma cruzi is a human parasite capable of remarkable high tolerance to IR, suggesting a highly efficient damage response system. Here, we investigate the role of T. cruzi proteasome in the damage response induced by IR. We exposed epimastigotes to high doses of gamma ray and we analyzed the expression and subcellular localization of several components of the ubiquitin-proteasome system. We show that proteasome inhibition increases IR-induced cell growth arrest and proteasome-mediated proteolysis is altered after parasite exposure. We observed nuclear accumulation of 19S and 20S proteasome subunits in response to IR treatments. Intriguingly, the dynamic of 19S particle nuclear accumulation was more similar to the dynamic observed for Rad51 nuclear translocation than the observed for 20S. In the other hand, 20S increase and nuclear translocation could be related with an increase of its regulator PA26 and high levels of proteasome-mediated proteolysis in vitro. The intersection between the opposed peaks of 19S and 20S protein levels was marked by nuclear accumulation of both 20S and 19S together with Ubiquitin, suggesting a role of ubiquitin-proteasome system in the nuclear protein turnover at the time. Our results revealed the importance of proteasome-mediated proteolysis in T. cruzi IR-induced damage response suggesting that proteasome is also involved in T. cruzi IR tolerance. Moreover, our data support the possible direct/signaling role of 19S in DNA damage repair. Based on these results, we speculate that spatial and temporal differences between the 19S particle and 20S proteasome controls proteasome multiple roles in IR damage response.
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Affiliation(s)
- Paula G Cerqueira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Danielle G Passos-Silva
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - João P Vieira-da-Rocha
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Isabela Cecilia Mendes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Karla A de Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Camila F B Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Liza F F Vilela
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ronaldo A P Nagem
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | | | | | - Marco A Krieger
- Instituto de Biologia Molecular do Paraná, Curitiba, Paraná, Brazil
| | - Glória R Franco
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Andrea M Macedo
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio D J Pena
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio Schenkman
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil
| | - Dawidson A Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Renata Guerra-Sá
- Departamento de Ciências Biológicas & Núcleo de Pesquisa em Ciências Biológicas, Instituto de Ciências Exatas e Biológica, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brazil
| | - Carlos R Machado
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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17
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Reis MC, Cardoso DBO, Júnior EGS, Gomes BC, Pereira LTG, Gomes DA, Sousa LB. Research Article Correlation among traits as criterion of cotton genotypes indirect selection. Genet Mol Res 2017. [DOI: 10.4238/gmr16039805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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Faria JAQA, de Andrade C, Goes AM, Rodrigues MA, Gomes DA. Effects of different ligands on epidermal growth factor receptor (EGFR) nuclear translocation. Biochem Biophys Res Commun 2016; 478:39-45. [PMID: 27462018 DOI: 10.1016/j.bbrc.2016.07.097] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [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: 07/12/2016] [Accepted: 07/21/2016] [Indexed: 11/18/2022]
Abstract
The epidermal growth factor receptor (EGFR) is activated through binding to specific ligands and generates signals for proliferation, differentiation, migration, and cell survival. Recent data show the role of nuclear EGFR in tumors. Although many EGFR ligands are upregulated in cancers, little is known about their effects on EGFR nuclear translocation. We have compared the effects of six EGFR ligands (EGF, HB-EGF, TGF-α, β-Cellulin, amphiregulin, and epiregulin) on nuclear translocation of EGFR, receptor phosphorylation, migration, and proliferation. Cell fractionation and confocal immunofluorescence detected EGFR in the nucleus after EGF, HB-EGF, TGF-α and β-Cellulin stimulation in a dose-dependent manner. In contrast, amphiregulin and epiregulin did not generate nuclear translocation of EGFR. EGF, HB-EGF, TGF-α and β-Cellulin showed correlations between a higher rate of wound closure and increased phosphorylation of residues in the carboxy-terminus of EGFR, compared to amphiregulin and epiregulin. The data indicate that EGFR is translocated to the nucleus after stimulation with EGF, HB-EGF, TGF-α and β-Cellulin, and that these ligands are related to increased phosphorylation of EGFR tyrosine residues, inducing migration of SkHep-1 cells.
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Affiliation(s)
- Jerusa A Q A Faria
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Carolina de Andrade
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Alfredo M Goes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Michele A Rodrigues
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil; Department of General Pathology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Av. Antonio Carlos, 6627, Belo Horizonte, MG, 31270-901, Brazil.
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Rodrigues MA, Gamba CO, Faria JAQA, Ferreira Ê, Goes AM, Gomes DA, Cassali GD. Inner nuclear membrane localization of epidermal growth factor receptor (EGFR) in spontaneous canine model of invasive micropapillary carcinoma of the mammary gland. Pathol Res Pract 2016; 212:340-4. [PMID: 26944829 PMCID: PMC4834221 DOI: 10.1016/j.prp.2015.11.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 11/06/2015] [Accepted: 11/27/2015] [Indexed: 12/21/2022]
Abstract
The epidermal growth factor receptor (EGFR) has been described in the nucleus of primary tumors. Accumulation of EGFR at the nucleus is linked to DNA synthesis and cell proliferation, but the pathological significance of nuclear EGFR is not completely understood. The aim of this study was to investigate the nuclear localization of EGFR in invasive micropapillary carcinoma (IMPC) that is an aggressive neoplasm of canine mammary gland. Confocal immunofluorescence of formalin and paraffin-embedded tissue was used to access the subcellular localization of EGFR. Our results demonstrated that EGFR co-localizes with the inner nuclear envelope marker, Lamin B1 in IMPC. Furthermore, EGFR was not localized within the nucleus or at the inner nuclear envelope membrane in mammary carcinoma in mixed tumor (CMT) that is associated with a better prognosis than other malignant histological types. This finding could be useful as a predictive biomarker of therapeutic response for IMPC.
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Affiliation(s)
- Michele A Rodrigues
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil; Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil.
| | - Conrado O Gamba
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
| | - Jerusa Araújo Quintão Arantes Faria
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
| | - Ênio Ferreira
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
| | - Alfredo M Goes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
| | - Dawidson A Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
| | - Geovanni D Cassali
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, MG, Brazil
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Oliveira MS, Mussi SV, Gomes DA, Yoshida MI, Frezard F, Carregal VM, Ferreira LAM. α-Tocopherol succinate improves encapsulation and anticancer activity of doxorubicin loaded in solid lipid nanoparticles. Colloids Surf B Biointerfaces 2015; 140:246-253. [PMID: 26764108 DOI: 10.1016/j.colsurfb.2015.12.019] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [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: 07/08/2015] [Revised: 12/01/2015] [Accepted: 12/13/2015] [Indexed: 12/20/2022]
Abstract
This work aimed to develop solid lipid nanoparticles (SLN) co-loaded with doxorubicin and α-tocopheryl succinate (TS), a succinic acid ester of α-tocopherol that exhibits anticancer actions, evaluating the influence of TS on drug encapsulation efficiency. The SLN were characterized for size, zeta potential, entrapment efficiency (EE), and drug release. Studies of in vitro anticancer activity were also conducted. The EE was significantly improved from 30 ± 1% to 96 ± 2% for SLN without and with TS at 0.4%, respectively. In contrast, a reduction in particle size from 298 ± 1 to 79 ± 1 nm was observed for SLN without and with TS respectively. The doxorubicin release data show that SLN provide a controlled drug release. The in vitro studies showed higher cytotoxicity for doxorubicin-TS-loaded SLN than for free doxorubicin in breast cancer cells. These findings suggest that TS-doxorubicin-loaded SLN is a promising alternative for the treatment of cancer.
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Affiliation(s)
- Mariana S Oliveira
- Department of Phamaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Brazil
| | - Samuel V Mussi
- Department of Phamaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Brazil
| | - Dawidson A Gomes
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Brazil
| | - Maria Irene Yoshida
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais (UFMG), Brazil
| | - Frederic Frezard
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av Antônio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Virgínia M Carregal
- Department of Physiology and Biophysics, Institute of Biological Sciences, Federal University of Minas Gerais (UFMG), Av Antônio Carlos, 6627, Campus Pampulha, 31270-901 Belo Horizonte, Minas Gerais, Brazil
| | - Lucas A M Ferreira
- Department of Phamaceutics, Faculty of Pharmacy, Federal University of Minas Gerais (UFMG), Brazil.
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21
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Pereira NB, Gomes CC, do Carmo ACDM, Diniz MG, Gomes DA, Gomez RS. Abstract 586: Nuclear translocation of EGFR in ameloblastomas. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Ameloblastoma is a locally destructive and invasive tumour that can recur despite adequate surgical removal. Growth factors and their receptors play a key role in the growth of normal tissues and the development and progression of human neoplasms. Epidermal growth factor (EGF), a peptide growth hormone widely spread in human tissues, regulates proliferation of both normal and neoplastic cells. Increased expression or activity of EGFR has been shown in various cancers and in head and neck squamous cell carcinomas it is overexpressed in more than 90% of cases, emerging as a therapeutic target. The inhibition of EGFR has recently been suggested as a treatment option for ameloblastomas. Despite intense efforts that have been made to inhibit the activity of EGFR and HER2, most tumors do not respond well to treatment, and those that initially respond well after a time become resistant. Evidence shows a new pathway of EGFR activation, which activates the nuclear translocation of EGFR gene expression and other cellular processes. Upon signal activation, EGFR accumulates in the nucleus facilitated by binding with transcription factors E2F1 and STAT3 through importins, leading to up-regulation of B-Myb, iNos and cyclin D1. However, this nuclear translocation has not yet been investigated in ameloblastomas. The purpose of the present study was to investigate the EGFR nuclear translocation in encapsulated (unicystic) and infiltrative (multicystic) ameloblastomas using immunofluorescence analyzed by confocal microscopic. Eleven formalin-fixed and paraffin-embedded ameloblastoma samples were included in the study (n = 8 multicystic and n = 3 unicystic). EGFR nuclear translocation was assessed by using immunofluorescence followed by confocal microscopic analysis, after double staining with a mouse monoclonal anti-EGFR antibody (clone 8G6.2)/rabbit polyclonal to lamin B1. To assess colocalization of nuclear EGFR and cyclin D1, we performed double staining with a mouse monoclonal anti-EGFR antibody and rabbit monoclonal anti-cyclin D1. Inflammatory fibrous hyperplasia and oral squamous cell carcinoma were used for comparison. Our results showed that ten cases of ameloblastoma exhibited nuclear translocation. This positive staining was observed in the ameloblast-like cells. The EGFR nuclear translocation was also observed in oral squamous cell carcinoma and in the epithelium of inflammatory fibrous hyperplasia. In addition, nuclear EGFR colocalized with cyclin D1 in ameloblastomas. In conclusion, our study suggests that nuclear translocation of EGFR plays an important role in ameloblastoma pathogenesis and it may be associated with cell proliferation.
Note: This abstract was not presented at the meeting.
Citation Format: Núbia B. Pereira, Carolina C. Gomes, Ana Carolina de M. do Carmo, Marina G. Diniz, Dawidson A. Gomes, Ricardo S. Gomez. Nuclear translocation of EGFR in ameloblastomas. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 586. doi:10.1158/1538-7445.AM2015-586
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Affiliation(s)
- Núbia B. Pereira
- Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | | | | | - Marina G. Diniz
- Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
| | | | - Ricardo S. Gomez
- Universidade Federal de Minas Gerais-UFMG, Belo Horizonte, Brazil
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22
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Paula ACC, Martins TMM, Zonari A, Frade SPPJ, Angelo PC, Gomes DA, Goes AM. Human adipose tissue-derived stem cells cultured in xeno-free culture condition enhance c-MYC expression increasing proliferation but bypassing spontaneous cell transformation. Stem Cell Res Ther 2015; 6:76. [PMID: 25889298 PMCID: PMC4455683 DOI: 10.1186/s13287-015-0030-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 01/24/2015] [Accepted: 03/02/2015] [Indexed: 12/13/2022] Open
Abstract
Introduction Human adipose tissue-derived stem cells (hASCs) are attractive cells for therapeutic applications and are currently being evaluated in multiple clinical trials. Prior to their clinical application, hASCs must be expanded ex vivo to obtain the required number of cells for transplantation. Fetal bovine serum is the supplement most widely used for cell culture, but it has disadvantages and it is not safe for cell therapy due to the risks of pathogen transmission and immune reaction. Furthermore, the cell expansion poses a risk of accumulating genetic abnormalities that could lead to malignant cell transformation. In this study, our aim was to evaluate the proliferation pattern as well as the resistance to spontaneous transformation of hASCs during expansion in a xeno-free culture condition. Methods hASCs were expanded in Dulbecco’s modified Eagle’s medium supplemented with pooled allogeneic human serum or fetal bovine serum to enable a side-by-side comparison. Cell viability and differentiation capacity toward the mesenchymal lineages were assessed, along with immunophenotype. Ki-67 expression and the proliferation kinetics were investigated. The expression of the transcription factors c-FOS and c-MYC was examined with Western blot, and MYC, CDKN2A, ERBB2 and TERT gene expression was assessed with quantitative PCR. Senescence was evaluated by β-gal staining. Karyotype analysis was performed and tumorigenesis assay in vivo was also evaluated. Results The hASCs expanded in medium with pooled allogeneic human serum did not show remarkable differences in morphology, viability, differentiation capacity or immunophenotype. The main difference observed was a significantly higher proliferative effect on hASCs cultured in pooled allogeneic human serum. There was no significant difference in C-FOS expression; however, C-MYC protein expression was enhanced in pooled allogeneic human serum cultures compared to fetal bovine serum cultures. No difference was observed in MYC and TERT mRNA levels. Moreover, the hASCs presented normal karyotype undergoing senescence, and did not form in vivo tumors, eliminating the possibility that spontaneous immortalization of hASCs had occurred with pooled allogeneic human serum. Conclusions This complete characterization of hASCs cultivated in pooled allogeneic human serum, a suitable xeno-free approach, shows that pooled allogeneic human serum provides a high proliferation rate, which can be attributed for the first time to C-MYC protein expression, and showed cell stability for safe clinical applications in compliance with good manufacturing practice.
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Affiliation(s)
- Ana C C Paula
- Laboratory of Cellular and Molecular Immunology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-910, Brazil.
| | - Thaís M M Martins
- Laboratory of Cellular and Molecular Immunology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-910, Brazil.
| | - Alessandra Zonari
- Laboratory of Cellular and Molecular Immunology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-910, Brazil.
| | - Soraia P P J Frade
- Instituto Hermes Pardini, Av. das Nações, 2448, Vespasiano, Minas Gerais, 33200-000, Brazil.
| | - Patrícia C Angelo
- Instituto Hermes Pardini, Av. das Nações, 2448, Vespasiano, Minas Gerais, 33200-000, Brazil.
| | - Dawidson A Gomes
- Laboratory of Cellular and Molecular Immunology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-910, Brazil.
| | - Alfredo M Goes
- Laboratory of Cellular and Molecular Immunology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Belo Horizonte, Minas Gerais, 31270-910, Brazil.
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Ferreira AF, França FD, Rossoni JV, Viana PHL, Moraes KCM, Gomes DA, Costa DC, Tagliati CA, Chaves MM. Cyclic adenosine monophosphate protects renal cell lines against amphotericin B toxicity in a PKA-independent manner. Drug Chem Toxicol 2015; 39:28-34. [PMID: 25690107 DOI: 10.3109/01480545.2015.1012210] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Amphotericin B is the "gold standard" agent in the management of serious systemic fungal infections. However, this drug can cause nephrotoxicity, which contributes up to 25% of all acute kidney injuries in critically ill patients. Cyclic adenosine monophosphate can protect kidney cells from death due to injury or drug exposure in some cases. Hence, the objective of this work was to evaluate if cAMP could prevent cell death that occurs in renal cell lines subjected to AmB treatment and, if so, to assess the involvement of PKA in the transduction of this signal. Two different renal cell lines (LLC-PK1 and MDCK) were used in this study. MTT and flow cytometry assays showed increased cell survival when cells were exposed to cAMP in a PKA-independent manner, which was confirmed by western blot. This finding suggests that cAMP (db-cAMP) may prevent cell death caused by exposure to AmB. This is the first time this effect has been identified when renal cells are exposed to AmB's nephrotoxic potential.
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Affiliation(s)
- A F Ferreira
- a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
| | - F D França
- a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
| | - J V Rossoni
- b Departamento de Ciências Biológicas , Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto , Mouro Preto , MG , Brazil
| | - P H L Viana
- a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
| | - K C M Moraes
- c Departamento de Biologia , Universidade Estadual Paulista "Júlio de Mesquita Filho", Instituto de Biociências , Rio Claro , SP , Brazil , and
| | - D A Gomes
- a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
| | - D C Costa
- b Departamento de Ciências Biológicas , Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto , Mouro Preto , MG , Brazil
| | - C A Tagliati
- d Departamento de Análises Clinicas e Toxicológicas , Faculdade de Farmácia, Universidade Federal de Minas Gerais , Bioquímica, Belo Horizonte , Brazil
| | - M M Chaves
- a Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , MG , Brazil
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Dantas AE, Horta CCR, Martins TMM, do Carmo AO, Mendes BBRDO, Goes AM, Kalapothakis E, Gomes DA. Whole venom of Loxosceles similis activates caspases-3, -6, -7, and -9 in human primary skin fibroblasts. Toxicon 2014; 84:56-64. [PMID: 24726468 DOI: 10.1016/j.toxicon.2014.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [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: 12/10/2013] [Revised: 03/27/2014] [Accepted: 04/03/2014] [Indexed: 12/31/2022]
Abstract
Spiders of the Loxosceles genus represent a risk to human health due to the systemic and necrotic effects of their bites. The main symptoms of these bites vary from dermonecrosis, observed in the majority of cases, to occasional systemic hemolysis and coagulopathy. Although the systemic effects are well characterized, the mechanisms of cell death triggered by the venom of these spiders are poorly characterized. In this study, we investigated the cell death mechanisms induced by the whole venom of the spider Loxosceles similis in human skin fibroblasts. Our results show that the venom initiates an apoptotic process and a caspase cascade involving the initiator caspase-9 and the effector caspases-3, -6, and -7.
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Affiliation(s)
- Arthur Estanislau Dantas
- Departmento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Carolina Campolina Rebello Horta
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; Programa de Pós-Graduação em Fisiologia e Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Thais M M Martins
- Departmento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil; Programa de Pós-graduação em Biologia Celular, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Anderson Oliveira do Carmo
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | | | - Alfredo M Goes
- Departmento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Evanguedes Kalapothakis
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil
| | - Dawidson A Gomes
- Departmento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais, Brazil.
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Souza TC, Silva AM, Drews JRP, Gomes DA, Vinderola CG, Nicoli JR. In vitro evaluation of Bifidobacterium strains of human origin for potential use in probiotic functional foods. Benef Microbes 2013; 4:179-86. [PMID: 23443950 DOI: 10.3920/bm2012.0052] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The present study investigated some in vitro properties for probiotic use of four strains of bifidobacteria isolated from faeces of healthy children (Bifidobacterium longum 51A, Bifidobacterium breve 1101A, Bifidobacterium pseudolongum 1191A and Bifidobacterium bifidum 1622A). In vitro tests were carried out to compare growth rate, aerotolerance, antagonistic activity against pathogens, antimicrobial susceptibility profile and cell wall hydrophobicity. Mean doubling time of B. longum 51A was shorter compared to the other strains. All strains were aerotolerant up to 72 h of exposure to oxygen. In vitro antagonism showed that B. longum 51A and B. pseudolongum 1191A were able to produce inhibitory diffusible compounds against all pathogenic bacteria tested, but not against Candida albicans. B. longum 51A was sensitive to all the antimicrobials tested, except neomycin. The hydrophobic property of the cell wall was highest for B. bifidum 1622A. Based on these parameters, B. longum 51A showed the best potential for probiotic use among the tested strains, presenting the greatest sensitivity to antimicrobials, the best growth rate and the highest capacity to produce antagonistic substances against various pathogenic microorganisms.
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Affiliation(s)
- T C Souza
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Antônio Carlos 6627, 30161-970 Belo Horizonte, MG, Brazil
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Carvalho JL, Braga VBA, Melo MB, Campos ACDA, Oliveira MS, Gomes DA, Ferreira AJ, Santos RAS, Goes AM. Priming mesenchymal stem cells boosts stem cell therapy to treat myocardial infarction. J Cell Mol Med 2013; 17:617-25. [PMID: 23490190 PMCID: PMC3665703 DOI: 10.1111/jcmm.12036] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Accepted: 12/20/2012] [Indexed: 12/13/2022] Open
Abstract
Cardiovascular diseases are the number one cause of death globally and are projected to remain the single leading cause of death. Treatment options abounds, although efficacy is limited. Recent studies attribute discrete and ephemeral benefits to adult stem cell therapies, indicating the urge to improve stem cell based-therapy. In this study, we show that priming mesenchymal stem cells (MSC) towards cardiomyogenic lineage enhances their beneficial effects in vivo as treatment option for acute phase myocardial infarction. MSC were primed using cardiomyogenic media for 4 days, after which peak expression of key cardiomyogenic genes are reached and protein expression of Cx-43 and sarcomeric α-actinin are observed. MSC and primed MSC (pMSC) were characterized in vitro and used to treat infarcted rats immediately after left anterior descending (LAD) occlusion. Echocardiography analysis indicated that MSC-treated myocardium presented discrete improvement in function, but it also showed that pMSC treatment lead to superior beneficial results, compared with undifferentiated MSC. Seven days after cell injection, MSC and pMSC could still be detected in the myocardium. Connexin-43 expression was quantified through immunoblotting, and was superior in pMSC, indicating that this could be a possible explanation for the superior performance of pMSC therapy.
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Affiliation(s)
- Juliana L Carvalho
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil.
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Oliveira MS, Melo MB, Carvalho JL, Melo IM, Lavor MS, Gomes DA, de Goes AM, Melo MM. Doxorubicin Cardiotoxicity and Cardiac Function Improvement After Stem Cell Therapy Diagnosed by Strain Echocardiography. ACTA ACUST UNITED AC 2013; 5:52-57. [PMID: 23459697 DOI: 10.4172/1948-5956.1000184] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [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: 12/18/2022]
Abstract
Doxorubicin (Dox) is one of the most effective chemotherapeutic agents; however, it causes dose-dependent cardiotoxicity. Evaluation of left ventricular function relies on measurements based on M-mode echocardiography. A new technique based on quantification of myocardial motion and deformation, strain echocardiography, has been showed promising profile for early detection of cardiac dysfunction. Different therapy strategies, such as flavonoid plant extracts and stem cells, have been investigated to improve heart function in toxic cardiomyopathy. This work aimed to assess early cardiac function improvement after treatments with either flavonoid extract from Camellia sinensis or mesenchymal stem cells in Dox cardiotoxicity using strain echocardiography. Twenty Wistar rats were randomly assigned to four groups. They received water (control, Dox, Dox + stem cells) or 100 mg/kg C. sinensis extract (Dox + C. sinensis) via gavage, daily, for four weeks. Animals also received saline (control) or 5 mg/kg doxorubicin (Dox, Dox + C. sinensis, Dox + stem cells) via intraperitoneal injection, weekly, for four weeks. Stem cells were injected (3 × 106 cells) through tail vein prior the beginning of the experiment (Dox + stem cells). Animals were evaluated by hematological, electrocardiography, echocardiography, and histopathological examinations. Dox cardiotoxicity was only diagnosed with strain echocardiography, detecting a decrease in ventricular function. C. sinensis extract did not prevent ventricular dysfunction induced by Dox. However, strain echocardiography examination revealed that Dox cardiotoxicity was significantly suppressed in rats treated with stem cells. In conclusion, strain echocardiography was able to detect precocity signs of heart failure and stem cell therapy showed cardioprotection effect against Dox cardiotoxicity.
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Affiliation(s)
- Maira S Oliveira
- Clinical and Surgery Department, College of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte 30123-970, Brazil
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Zonari A, Novikoff S, Electo NRP, Breyner NM, Gomes DA, Martins A, Neves NM, Reis RL, Goes AM. Endothelial differentiation of human stem cells seeded onto electrospun polyhydroxybutyrate/polyhydroxybutyrate-co-hydroxyvalerate fiber mesh. PLoS One 2012; 7:e35422. [PMID: 22523594 PMCID: PMC3327675 DOI: 10.1371/journal.pone.0035422] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 03/15/2012] [Indexed: 01/26/2023] Open
Abstract
Tissue engineering is based on the association of cultured cells with structural matrices and the incorporation of signaling molecules for inducing tissue regeneration. Despite its enormous potential, tissue engineering faces a major challenge concerning the maintenance of cell viability after the implantation of the constructs. The lack of a functional vasculature within the implant compromises the delivery of nutrients to and removal of metabolites from the cells, which can lead to implant failure. In this sense, our investigation aims to develop a new strategy for enhancing vascularization in tissue engineering constructs. This study's aim was to establish a culture of human adipose tissue-derived stem cells (hASCs) to evaluate the biocompatibility of electrospun fiber mesh made of polyhydroxybutyrate (PHB) and its copolymer poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHB-HV) and to promote the differentiation of hASCs into the endothelial lineage. Fiber mesh was produced by blending 30% PHB with 70% PHB-HV and its physical characterization was conducted using scanning electron microscopy analysis (SEM). Using electrospinning, fiber mesh was obtained with diameters ranging 300 nm to 1.3 µm. To assess the biological performance, hASCs were extracted, cultured, characterized by flow cytometry, expanded and seeded onto electrospun PHB/PHB-HV fiber mesh. Various aspects of the cells were analyzed in vitro using SEM, MTT assay and Calcein-AM staining. The in vitro evaluation demonstrated good adhesion and a normal morphology of the hASCs. After 7, 14 and 21 days of seeding hASCs onto electrospun PHB/PHB-HV fiber mesh, the cells remained viable and proliferative. Moreover, when cultured with endothelial differentiation medium (i.e., medium containing VEGF and bFGF), the hASCs expressed endothelial markers such as VE-Cadherin and the vWF factor. Therefore, the electrospun PHB/PHB-HV fiber mesh appears to be a suitable material that can be used in combination with endothelial-differentiated cells to improve vascularization in engineered bone tissues.
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Affiliation(s)
- Alessandra Zonari
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Silviene Novikoff
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Naira R. P. Electo
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Natália M. Breyner
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Dawidson A. Gomes
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Albino Martins
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - Nuno M. Neves
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - Rui L. Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - Alfredo M. Goes
- Department of Biochemistry and Immunology, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Carvalho JL, de Carvalho PH, Gomes DA, Goes AM. Characterization of Decellularized Heart Matrices as Biomaterials for Regular and Whole Organ Tissue Engineering and Initial In-vitro Recellularization with Ips Cells. ACTA ACUST UNITED AC 2012. [PMID: 26207188 DOI: 10.4172/2157-7552.s11-002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [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: 12/31/2022]
Abstract
Tissue engineering strategies, based on solid/porous scaffolds, suffer from several limitations, such as ineffective vascularization, poor cell distribution and organization within scaffold, in addition to low final cell density, among others. Therefore, the search for other tissue engineering approaches constitutes an active area of investigation. Decellularized matrices (DM) present major advantages compared to solid scaffolds, such as ideal chemical composition, the preservation of vascularization structure and perfect three-dimensional structure. In the present study, we aimed to characterize and investigate murine heart decellularized matrices as biomaterials for regular and whole organ tissue engineering. Heart decellularized matrices were characterized according to: 1. DNA content, through DNA quantificationo and PCR of isolated genomic DNA; 2. Histological structure, assessed after Hematoxylin and Eosin, as well as Masson's Trichrome stainings; 3. Surface nanostructure analysis, performed, using SEM. Those essays allowed us to conclude that DM was indeed decellularized, with preserved extracellular matrix structure. Following characterization, decellularized heart slices were seeded with induced Pluripotent Stem cells (iPS). As expected, but - to the best of our knowledge - never shown before, decellularization of murine heart matrices maintained matrix biocompatibility, as iPS cells rapidly attached to the surface of the material and proliferated. Strikingly though, heart DM presented a differentiation induction effect over those cells, which lost their pluripotency markers after 7 days of culture in the DM. Such loss of differentiation markers was observed, even though bFGF containing media mTSR was used during such period. Gene expression of iPS cells cultured on DM will be further analyzed, in order to assess the effects of culturing pluripotent stem cells in decellularized heart matrices.
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Affiliation(s)
- Juliana L Carvalho
- Departments of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 30123-970, Brazil
| | - Pablo Herthel de Carvalho
- Department of Clinical and Surgery, College of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte 30123-970, Brazil
| | - Dawidson A Gomes
- Departments of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 30123-970, Brazil
| | - Alfredo M Goes
- Departments of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 30123-970, Brazil
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Abstract
The increasing interest in stem cell research is linked to the promise of developing treatments for many lifethreatening, debilitating diseases, and for cell replacement therapies. However, performing these therapeutic innovations with safety will only be possible when an accurate knowledge about the molecular signals that promote the desired cell fate is reached. Among these signals are transient changes in intracellular Ca(2+) concentration [Ca(2+)](i). Acting as an intracellular messenger, Ca(2+) has a key role in cell signaling pathways in various differentiation stages of stem cells. The aim of this chapter is to present a broad overview of various moments in which Ca(2+)-mediated signaling is essential for the maintenance of stem cells and for promoting their development and differentiation, also focusing on their therapeutic potential.
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Affiliation(s)
- Fernanda M P Tonelli
- Nanomaterials Laboratory, Department of Physics, Insitute of Exact Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Rezende CM, Silva MR, Santos ÍG, Silva GA, Gomes DA, Goes AM. Immunization with rP22 induces protective immunity against Schistosoma mansoni: Effects on granuloma down-modulation and cytokine production. Immunol Lett 2011; 141:123-33. [DOI: 10.1016/j.imlet.2011.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Revised: 08/22/2011] [Accepted: 09/09/2011] [Indexed: 12/17/2022]
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Carvalho SM, Oliveira AA, Jardim CA, Melo CB, Gomes DA, de Fátima Leite M, Pereira MM. Characterization and induction of cementoblast cell proliferation by bioactive glass nanoparticles. J Tissue Eng Regen Med 2011; 6:813-21. [DOI: 10.1002/term.488] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 02/25/2011] [Accepted: 07/12/2011] [Indexed: 11/12/2022]
Affiliation(s)
- Sandhra M. Carvalho
- Departments of Metallurgical and Materials Engineering; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
| | - Agda A.R. Oliveira
- Departments of Metallurgical and Materials Engineering; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
| | - Camila A. Jardim
- Department of Physiology and Biophysics; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
| | - Carolina B.S. Melo
- Department of Biochemistry and Immunology; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
| | - Dawidson A. Gomes
- Department of Biochemistry and Immunology; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
| | | | - Marivalda M. Pereira
- Departments of Metallurgical and Materials Engineering; Federal University of Minas Gerais; Av. Antônio Carlos 6627; Belo Horizonte; CEP: 31270-901; Brazil
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De Angelis Campos AC, Rodrigues MA, de Andrade C, de Goes AM, Nathanson MH, Gomes DA. Epidermal growth factor receptors destined for the nucleus are internalized via a clathrin-dependent pathway. Biochem Biophys Res Commun 2011; 412:341-6. [PMID: 21821003 DOI: 10.1016/j.bbrc.2011.07.100] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 07/22/2011] [Indexed: 10/17/2022]
Abstract
The epidermal growth factor (EGF) transduces its actions via the EGF receptor (EGFR), which can traffic from the plasma membrane to either the cytoplasm or the nucleus. However, the mechanism by which EGFR reaches the nucleus is unclear. To investigate these questions, liver cells were analyzed by immunoblot of cell fractions, confocal immunofluorescence and real time confocal imaging. Cell fractionation studies showed that EGFR was detectable in the nucleus after EGF stimulation with a peak in nuclear receptor after 10 min. Movement of EGFR to the nucleus was confirmed by confocal immunofluorescence and labeled EGF moved with the receptor to the nucleus. Small interference RNA (siRNA) was used to knockdown clathrin in order to assess the first endocytic steps of EGFR nuclear translocation in liver cells. A mutant dynamin (dynamin K44A) was also used to determine the pathways for this traffic. Movement of labeled EGF or EGFR to the nucleus depended upon dynamin and clathrin. This identifies the pathway that mediates the first steps for EGFR nuclear translocation in liver cells.
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Lagoudakis L, Garcin I, Julien B, Nahum K, Gomes DA, Combettes L, Nathanson MH, Tordjmann T. Cytosolic calcium regulates liver regeneration in the rat. Hepatology 2010; 52:602-11. [PMID: 20683958 PMCID: PMC3572840 DOI: 10.1002/hep.23673] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
UNLABELLED Liver regeneration is regulated by growth factors, cytokines, and other endocrine and metabolic factors. Calcium is important for cell division, but its role in liver regeneration is not known. The purpose of this study was to understand the effects of cytosolic calcium signals in liver growth after partial hepatectomy (PH). The gene encoding the calcium-binding protein parvalbumin (PV) targeted to the cytosol using a nuclear export sequence (NES), and using a discosoma red fluorescent protein (DsR) marker, was transfected into rat livers by injecting it, in recombinant adenovirus (Ad), into the portal vein. We performed two-thirds PH 4 days after Ad-PV-NES-DsR or Ad-DsR injection, and liver regeneration was analyzed. Calcium signals were analyzed with fura-2-acetoxymethyl ester in hepatocytes isolated from Ad-infected rats and in Ad-infected Hela cells. Also, isolated hepatocytes were infected with Ad-DsR or Ad-PV-NES-DsR and assayed for bromodeoxyuridine incorporation. Ad-PV-NES-DsR injection resulted in PV expression in the hepatocyte cytosol. Agonist-induced cytosolic calcium oscillations were attenuated in both PV-NES-expressing Hela cells and hepatocytes, as compared to DsR-expressing cells. Bromodeoxyuridine incorporation (S phase), phosphorylated histone 3 immunostaining (mitosis), and liver mass restoration after PH were all significantly delayed in PV-NES rats. Reduced cyclin expression and retinoblastoma protein phosphorylation confirmed this observation. PV-NES rats exhibited reduced c-fos induction and delayed extracellular signal-regulated kinase 1/2 phosphorylation after PH. Finally, primary PV-NES-expressing hepatocytes exhibited less proliferation and agonist-induced cyclic adenosine monophosphate responsive element binding and extracellular signal-regulated kinase 1/2 phosphorylation, as compared with control cells. CONCLUSION Cytosolic calcium signals promote liver regeneration by enhancing progression of hepatocytes through the cell cycle.
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Affiliation(s)
- Laura Lagoudakis
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
| | - Isabelle Garcin
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
| | - Boris Julien
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
| | - Kis Nahum
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
| | - Dawidson A. Gomes
- Federal University of Minas Gerais, Belo Horizonte-Minas Gerais, Brazil
| | - Laurent Combettes
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
| | | | - Thierry Tordjmann
- Institut National de la Santéet de la Recherche Médicale (INSERM) U757, UniversitéParis-sud, Orsay, France
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Aguiar CJ, Andrade VL, Gomes ERM, Alves MNM, Ladeira MS, Pinheiro ACN, Gomes DA, Almeida AP, Goes AM, Resende RR, Guatimosim S, Leite MF. Succinate modulates Ca(2+) transient and cardiomyocyte viability through PKA-dependent pathway. Cell Calcium 2009; 47:37-46. [PMID: 20018372 DOI: 10.1016/j.ceca.2009.11.003] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 10/26/2009] [Accepted: 11/04/2009] [Indexed: 10/20/2022]
Abstract
GPR91 is an orphan G-protein-coupled receptor (GPCR) that has been characterized as a receptor for succinate, a citric acid cycle intermediate, in several tissues. In the heart, the role of succinate is unknown. We now report that rat ventricular cardiomyocytes express GPR91. We found that succinate, through GPR91, increases the amplitude and the rate of decline of global Ca(2+) transient, by increasing the phosphorylation levels of ryanodine receptor and phospholamban, two well known Ca(2+) handling proteins. The effects of succinate on Ca(2+) transient were abolished by pre-treatment with adenylyl cyclase and cAMP-dependent protein kinase (PKA) inhibitors. Direct PKA activation by succinate was further confirmed using a FRET-based A-kinase activity reporter. Additionally, succinate decreases cardiomyocyte viability through a caspase-3 activation pathway, effect also prevented by PKA inhibition. Taken together, these observations show that succinate acts as a signaling molecule in cardiomyocytes, modulating global Ca(2+) transient and cell viability through a PKA-dependent pathway.
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Affiliation(s)
- Carla J Aguiar
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte CEP, Brazil
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Rodrigues MA, Gomes DA, Nathanson MH, Leite MF. Nuclear calcium signaling: a cell within a cell. ACTA ACUST UNITED AC 2008; 42:17-20. [PMID: 18982194 DOI: 10.1590/s0100-879x2008005000050] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2008] [Accepted: 09/29/2008] [Indexed: 11/21/2022]
Abstract
Calcium (Ca2+) is a versatile second messenger that regulates a wide range of cellular functions. Although it is not established how a single second messenger coordinates diverse effects within a cell, there is increasing evidence that the spatial patterns of Ca2+ signals may determine their specificity. Ca2+ signaling patterns can vary in different regions of the cell and Ca2+ signals in nuclear and cytoplasmic compartments have been reported to occur independently. No general paradigm has been established yet to explain whether, how, or when Ca2+ signals are initiated within the nucleus or their function. Here we highlight that receptor tyrosine kinases rapidly translocate to the nucleus. Ca2+ signals that are induced by growth factors result from phosphatidylinositol 4,5-bisphosphate hydrolysis and inositol 1,4,5-trisphosphate formation within the nucleus rather than within the cytoplasm. This novel signaling mechanism may be responsible for growth factor effects on cell proliferation.
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Affiliation(s)
- M A Rodrigues
- Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
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Abstract
Insulin is an hepatic mitogen that promotes liver regeneration. Actions of insulin are mediated by the insulin receptor, which is a receptor tyrosine kinase. It is currently thought that signaling via the insulin receptor occurs at the plasma membrane, where it binds to insulin. Here we report that insulin induces calcium oscillations in isolated rat hepatocytes, and that these calcium signals depend upon activation of phospholipase C and the inositol 1,4,5-trisphosphate receptor, but not upon extracellular calcium. Furthermore, insulin-induced calcium signals occur in the nucleus, and are temporally associated with selective depletion of nuclear phosphatidylinositol bisphosphate and translocation of the insulin receptor to the nucleus. These findings suggest that the insulin receptor translocates to the nucleus to initiate nuclear, inositol 1,4,5-trisphosphate-mediated calcium signals in rat hepatocytes. This novel signaling mechanism may be responsible for insulin's effects on liver growth and regeneration.
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Affiliation(s)
- Michele A Rodrigues
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520-8019, USA
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Guatimosim S, Amaya MJ, Guerra MT, Aguiar CJ, Goes AM, Gómez-Viquez NL, Rodrigues MA, Gomes DA, Martins-Cruz J, Lederer WJ, Leite MF. Nuclear Ca2+ regulates cardiomyocyte function. Cell Calcium 2008; 44:230-42. [PMID: 18201761 DOI: 10.1016/j.ceca.2007.11.016] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2007] [Revised: 10/30/2007] [Accepted: 11/30/2007] [Indexed: 01/19/2023]
Abstract
In the heart, cytosolic Ca(2+) signals are well-characterized events that participate in the activation of cell contraction. In contrast, nuclear Ca(2+) contribution to cardiomyocyte function remains elusive. Here, we examined functional consequences of buffering nuclear Ca(2+) in neonatal cardiomyocytes. We report that cardiomyocytes contain a nucleoplasmic reticulum, which expresses both ryanodine receptor (RyR) and inositol 1,4,5-trisphosphate receptor (InsP(3)R), providing a possible way for active regulation of nuclear Ca(2+). Adenovirus constructs encoding the Ca(2+) buffer protein parvalbumin were targeted to the nucleus with a nuclear localization signal (Ad-PV-NLS) or to the cytoplasm with a nuclear exclusion signal (Ad-PV-NES). A decrease in the amplitude of global Ca(2+) transients and RyR-II expression, as well as an increase in cell beating rate were observed in Ad-PV-NES and Ad-PV-NLS cells. When nuclear Ca(2+) buffering was imposed nuclear enlargement, increased calcineurin expression, NFAT translocation to the nucleus and subcellular redistribution of atrial natriuretic peptide were observed. Furthermore, prolongation of action potential duration occurred in adult ventricular myocytes. These results suggest that nuclear Ca(2+) levels underlie the regulation of specific protein targets and thereby modulate cardiomyocyte function. The local nuclear Ca(2+) signaling and the structures that control it constitute a novel regulatory motif in the heart.
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Affiliation(s)
- Silvia Guatimosim
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte CEP: 31270-901, Brazil
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Gomes DA, Rodrigues MA, Leite MF, Gomez MV, Varnai P, Balla T, Bennett AM, Nathanson MH. c-Met must translocate to the nucleus to initiate calcium signals. J Biol Chem 2007; 283:4344-51. [PMID: 18073207 DOI: 10.1074/jbc.m706550200] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hepatocyte growth factor (HGF) is important for cell proliferation, differentiation, and related activities. HGF acts through its receptor c-Met, which activates downstream signaling pathways. HGF binds to c-Met at the plasma membrane, where it is generally believed that c-Met signaling is initiated. Here we report that c-Met rapidly translocates to the nucleus upon stimulation with HGF. Ca(2+) signals that are induced by HGF result from phosphatidylinositol 4,5-bisphosphate hydrolysis and inositol 1,4,5-trisphosphate formation within the nucleus rather than within the cytoplasm. Translocation of c-Met to the nucleus depends upon the adaptor protein Gab1 and importin beta1, and formation of Ca(2+) signals in turn depends upon this translocation. HGF may exert its particular effects on cells because it bypasses signaling pathways in the cytoplasm to directly activate signaling pathways in the nucleus.
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Affiliation(s)
- Dawidson A Gomes
- Department of Internal Medicine and Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019, USA
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Minagawa N, Nagata J, Shibao K, Masyuk AI, Gomes DA, Rodrigues MA, LeSage G, Akiba Y, Kaunitz JD, Ehrlich BE, LaRusso NF, Nathanson MH. Cyclic AMP regulates bicarbonate secretion in cholangiocytes through release of ATP into bile. Gastroenterology 2007; 133:1592-602. [PMID: 17916355 PMCID: PMC2128713 DOI: 10.1053/j.gastro.2007.08.020] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2006] [Accepted: 07/02/2007] [Indexed: 01/07/2023]
Abstract
BACKGROUND & AIMS Bicarbonate secretion is a primary function of cholangiocytes. Either adenosine 3',5'-cyclic monophosphate (cAMP) or cytosolic Ca(2+) can mediate bicarbonate secretion, but these are thought to act through separate pathways. We examined the role of the inositol 1,4,5-trisphosphate receptor (InsP3R) in mediating bicarbonate secretion because this is the only intracellular Ca(2+) release channel in cholangiocytes. METHODS Intrahepatic bile duct units (IBDUs) were microdissected from rat liver then luminal pH was examined by confocal microscopy during IBDU microperfusion. Cyclic AMP was increased using forskolin or secretin, and Ca(2+) was increased using acetylcholine (ACh) or adenosine triphosphate (ATP). Apyrase was used to hydrolyze extracellular ATP, and suramin was used to block apical P2Y ATP receptors. In selected experiments, IBDUs were pretreated with short interfering RNA (siRNA) to silence expression of specific InsP3R isoforms. RESULTS Both cAMP and Ca(2+) agonists increased luminal pH. The effect of ACh on luminal pH was reduced by siRNA for basolateral (types I and II) but not apical (type III) InsP3R isoforms. The effect of forskolin on luminal pH was reduced by a cystic fibrosis transmembrane conductance regulator (CFTR) inhibitor and by siRNA for the type III InsP3R. Luminal apyrase or suramin blocked the effects of forskolin but not ACh on luminal pH. CONCLUSIONS Cyclic AMP-induced ductular bicarbonate secretion depends on an autocrine signaling pathway that involves CFTR, apical release of ATP, stimulation of apical nucleotide receptors, and then activation of apical, type III InsP3Rs. The primary role of CFTR in bile duct secretion may be to regulate secretion of ATP rather than to secrete chloride and/or bicarbonate.
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Affiliation(s)
- Noritaka Minagawa
- Department of Medicine, Yale University School of Medicine, New Haven, CT, Department of Surgery 1, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Jun Nagata
- Department of Medicine, Yale University School of Medicine, New Haven, CT, Department of Surgery 1, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Kazunori Shibao
- Department of Medicine, Yale University School of Medicine, New Haven, CT, Department of Surgery 1, University of Occupational and Environmental Health, Kitakyushu, Japan
| | | | - Dawidson A. Gomes
- Department of Medicine, Yale University School of Medicine, New Haven, CT
| | | | - Gene LeSage
- Department of Medicine, University of Texas, Houston, TX
| | - Yasutada Akiba
- Department of Medicine, University of California, Los Angeles, CA
| | | | - Barbara E. Ehrlich
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT
| | | | - Michael H. Nathanson
- Department of Medicine, Yale University School of Medicine, New Haven, CT,7Address for correspondence: Michael H. Nathanson, Digestive Diseases, Room TAC S241D, Yale University School of Medicine, New Haven, CT 06520-8019, Phone 203-785-7312, FAX 203-785-4306,
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Abstract
BACKGROUND & AIMS Polarity is critical for hepatocyte function. Ca(2+) waves are polarized in hepatocytes because the inositol 1,4,5-trisphosphate receptor (InsP3R) is concentrated in the pericanalicular region, but the basis for this localization is unknown. We examined whether pericanalicular localization of the InsP3R and its action to trigger Ca(2+) waves depends on lipid rafts. METHODS Experiments were performed using isolated rat hepatocyte couplets and pancreatic acini, plus SkHep1 cells as nonpolarized controls. The cholesterol depleting agent methyl-beta-cyclodextrin (mbetaCD) was used to disrupt lipid rafts. InsP3R isoforms were examined by immunoblot and immunofluorescence. Ca(2+) waves were examined by confocal microscopy. RESULTS Type II InsP3Rs initially were localized to only some endoplasmic reticulum fractions in hepatocytes, but redistributed into all fractions in mbetaCD-treated cells. This InsP3R isoform was concentrated in the pericanalicular region, but redistributed throughout the cell after mbetaCD treatment. Vasopressin-induced Ca(2+) signals began as apical-to-basal Ca(2+) waves, and mbetaCD slowed the wave speed and prolonged the rise time. MbetaCD had a similar effect on Ca(2+) waves in acinar cells but did not affect Ca(2+) signals in SkHep1 cells, suggesting that cholesterol depletion has similar effects among polarized epithelia, but this is not a nonspecific effect of mbetaCD. CONCLUSIONS Lipid rafts are responsible for the pericanalicular accumulation of InsP3R in hepatocytes, and for the polarized Ca(2+) waves that result. Signaling microdomains exist not only in the plasma membrane, but also in the nearby endoplasmic reticulum, which in turn, helps establish and maintain structural and functional polarity.
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Affiliation(s)
- Jun Nagata
- Section of Digestive Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8019, USA
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Rodrigues MA, Gomes DA, Leite MF, Grant W, Zhang L, Lam W, Cheng YC, Bennett AM, Nathanson MH. Nucleoplasmic calcium is required for cell proliferation. J Biol Chem 2007; 282:17061-8. [PMID: 17420246 PMCID: PMC2825877 DOI: 10.1074/jbc.m700490200] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Ca(2+) signals regulate cell proliferation, but the spatial and temporal specificity of these signals is unknown. Here we use selective buffers of nucleoplasmic or cytoplasmic Ca(2+) to determine that cell proliferation depends upon Ca(2+) signals within the nucleus rather than in the cytoplasm. Nuclear Ca(2+) signals stimulate cell growth rather than inhibit apoptosis and specifically permit cells to advance through early prophase. Selective buffering of nuclear but not cytoplasmic Ca(2+) signals also impairs growth of tumors in vivo. These findings reveal a major physiological and potential pathophysiological role for nucleoplasmic Ca(2+) signals and suggest that this information can be used to design novel therapeutic strategies to regulate conditions of abnormal cell growth.
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Affiliation(s)
- Michele A. Rodrigues
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8019
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil 31270-901
| | - Dawidson A. Gomes
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - M. Fatima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil 31270-901
| | - Wayne Grant
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - Lei Zhang
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - Wing Lam
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - Yung-Chi Cheng
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - Anton M. Bennett
- Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520-8019
| | - Michael H. Nathanson
- Department of Medicine, Yale University School of Medicine, New Haven, Connecticut 06520-8019
- To whom correspondence should be addressed: Digestive Diseases, Rm. TAC S241D, Yale University School of Medicine, New Haven, CT 06520-8019. Tel.: 203-785-7312; Fax: 203-785-4306;
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Hernandez E, Leite MF, Guerra MT, Kruglov EA, Bruna-Romero O, Rodrigues MA, Gomes DA, Giordano FJ, Dranoff JA, Nathanson MH. The spatial distribution of inositol 1,4,5-trisphosphate receptor isoforms shapes Ca2+ waves. J Biol Chem 2007; 282:10057-10067. [PMID: 17284437 PMCID: PMC2825872 DOI: 10.1074/jbc.m700746200] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Cytosolic Ca(2+) is a versatile second messenger that can regulate multiple cellular processes simultaneously. This is accomplished in part through Ca(2+) waves and other spatial patterns of Ca(2+) signals. To investigate the mechanism responsible for the formation of Ca(2+) waves, we examined the role of inositol 1,4,5-trisphosphate receptor (InsP3R) isoforms in Ca(2+) wave formation. Ca(2+) signals were examined in hepatocytes, which express the type I and II InsP3R in a polarized fashion, and in AR4-2J cells, a nonpolarized cell line that expresses type I and II InsP3R in a ratio similar to what is found in hepatocytes but homogeneously throughout the cell. Expression of type I or II InsP3R was selectively suppressed by isoform-specific DNA antisense in an adenoviral delivery system, which was delivered to AR4-2J cells in culture and to hepatocytes in vivo. Loss of either isoform inhibited Ca(2+) signals to a similar extent in AR4-2J cells. In contrast, loss of the basolateral type I InsP3R decreased the sensitivity of hepatocytes to vasopressin but had little effect on the initiation or spread of Ca(2+) waves across hepatocytes. Loss of the apical type II isoform caused an even greater decrease in the sensitivity of hepatocytes to vasopressin and resulted in Ca(2+) waves that were much slower and delayed in onset. These findings provide evidence that the apical concentration of type II InsP3Rs is essential for the formation of Ca(2+) waves in hepatocytes. The subcellular distribution of InsP3R isoforms may critically determine the repertoire of spatial patterns of Ca(2+) signals.
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MESH Headings
- Animals
- Base Sequence
- Calcium Channels/chemistry
- Calcium Channels/genetics
- Calcium Channels/physiology
- Calcium Signaling/physiology
- Cells, Cultured
- Hepatocytes/metabolism
- Inositol 1,4,5-Trisphosphate Receptors/chemistry
- Inositol 1,4,5-Trisphosphate Receptors/genetics
- Inositol 1,4,5-Trisphosphate Receptors/physiology
- Membrane Glycoproteins/chemistry
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/physiology
- Molecular Sequence Data
- Protein Isoforms/chemistry
- Protein Isoforms/physiology
- Rats
- Receptors, Cytoplasmic and Nuclear/chemistry
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/physiology
- Vasopressins/physiology
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Affiliation(s)
- Erick Hernandez
- Department of Pediatrics, Yale University, New Haven, Connecticut 06520
| | - M Fatima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Mateus T Guerra
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Emma A Kruglov
- Department of Medicine, Yale University, New Haven, Connecticut 06520
| | - Oscar Bruna-Romero
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil
| | - Michele A Rodrigues
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais 31270-901, Brazil; Department of Medicine, Yale University, New Haven, Connecticut 06520
| | - Dawidson A Gomes
- Department of Medicine, Yale University, New Haven, Connecticut 06520
| | - Frank J Giordano
- Department of Medicine, Yale University, New Haven, Connecticut 06520
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Abstract
Transport into the nucleus is critical for regulation of gene transcription and other intranuclear events. Passage of molecules into the nucleus depends in part upon their size and the presence of appropriate targeting sequences. However, little is known about the effects of hormones or their second messengers on transport across the nuclear envelope. We used localized, two-photon activation of a photoactivatable green fluorescent protein to investigate whether hormones, via their second messengers, could alter nuclear permeability. Vasopressin and other hormones that increase cytosolic Ca2+ and activate protein kinase C increased permeability across the nuclear membrane of SKHep1 liver cells in a rapid unidirectional manner. An increase in cytosolic Ca2+ was both necessary and sufficient for this process. Furthermore, localized photorelease of caged Ca2+ near the nuclear envelope resulted in a local increase in nuclear permeability. Neither activation nor inhibition of protein kinase C affected nuclear permeability. These findings provide evidence that hormones linking to certain G protein-coupled receptors increase nuclear permeability via cytosolic Ca2+. Short term regulation of nuclear permeability may provide a novel mechanism by which such hormones permit transcription factors and other regulatory molecules to enter the nucleus, thereby regulating gene transcription in target cells.
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Affiliation(s)
| | | | | | - Michael H. Nathanson
- To whom correspondence should be addressed: Section of Digestive Diseases, Yale University School of Medicine, 1 Gilbert St., Rm. TAC S241D, New Haven, CT 06520-8019. Tel.: 203-785-7312; Fax: 203-785-4306;
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45
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Abstract
Cytosolic Ca(2+) is a versatile secondary messenger that regulates a wide range of cellular activities. In the past decade, evidence has accumulated that free Ca(2+) within the nucleus also plays an important messenger function. Here we review the mechanisms and effects of Ca(2+) signals within the nucleus. In particular, evidence is reviewed that the nucleus contains the machinery necessary for production of inositol 1,4,5-trisphosphate and for inositol 1,4,5-trisphosphate receptor-mediated Ca(2+) release. The role of Ca(2+) signals within the nucleus is discussed including regulation of such critical cell functions as gene expression, activation of kinases, and permeability of nuclear pores.
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Affiliation(s)
- Dawidson A Gomes
- Department of Pharmacology, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Pimenta FJ, Gomes DA, Perdigão PF, Barbosa AA, Romano-Silva MA, Gomez MV, Aldaz CM, De Marco L, Gomez RS. Characterization of the tumor suppressor gene WWOX in primary human oral squamous cell carcinomas. Int J Cancer 2006; 118:1154-8. [PMID: 16152610 PMCID: PMC4145845 DOI: 10.1002/ijc.21446] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Oral squamous cell carcinoma (OSCC) is the most common malignant neoplasm of the oral cavity, representing 90% of all oral carcinomas and accounting for 3-5% of all malignancies. The WWOX gene (WW-domain containing oxidoreductase) is a candidate tumor suppressor gene located at 16q23.3-24.1, spanning the second most common fragile site, FRA16D. In this report, the role of the WWOX gene was investigated in 20 tumors and 10 normal oral mucosas, and we demonstrated an altered WWOX gene in 50% (10/20) of OSCCs. Using nested RT-PCR, mRNA transcription was altered in 35% of the tumors, with the complete absence of transcripts in 2 samples as well as absence of exons 6-8 (2 tumors), exon 7 (1 tumor), exon 7 and exon 6-8 (1 tumor) and partial loss of exons 8 and 9 (1 tumor). To determine if the aberrant transcripts were translated, Western blots were performed in all samples; however, only the normal protein was detected. By immunohistochemistry, a reduction in Wwox protein expression was observed, affecting 40% of the tumors when compared with normal mucosa. In addition, a novel somatic mutation (S329F) was found. The presence of alterations in mRNA transcription correlated with the reduced expression of Wwox protein in the tumors. These results show that the WWOX gene is frequently altered in OSCC and may contribute to the carcinogenesis processes in oral cancer.
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Affiliation(s)
- Flávio J. Pimenta
- Department of Oral Surgery and Pathology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Dawidson A. Gomes
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Paolla F. Perdigão
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Marco A. Romano-Silva
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcus V. Gomez
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - C. Marcelo Aldaz
- Department of Carcinogenesis, The University of Texas MD Anderson Cancer Center, Smithville, TX 78957, USA
| | - Luiz De Marco
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Correspondence to: Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil, Av. Antonio Carlos, 6627, Belo Horizonte 31270-901, Brasil.
| | - Ricardo S. Gomez
- Department of Oral Surgery and Pathology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Gomes DA, Souza AML, Lopes RV, Nunes AC, Nicoli JR. Comparison of antagonistic ability against enteropathogens by G+ and G− anaerobic dominant components of human fecal microbiota. Folia Microbiol (Praha) 2006; 51:141-5. [PMID: 16821725 DOI: 10.1007/bf02932170] [Citation(s) in RCA: 14] [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: 12/16/2022]
Abstract
To confirm if anaerobic G+-components are those responsible for the function of colonization resistance, obligate anaerobic G+- and G- -bacteria from normal dominant microbiota of human feces were isolated from three successive collections and then used in in vitro assays for antagonism against two enteropathogenic bacteria. The production of inhibitory diffusible compounds was determined on supplemented BHI agar and MRS agar media for G- - and G+-bacteria, respectively. Salmonella enterica subsp. enterica serovar Typhimurium and Shigella sonnei were used as indicators. G+-bacteria presented a higher overall antagonistic frequency against both pathogenic bacteria (57 and 64 % for S. enterica serovar Typhimurium and S. sonnei, respectively) when compared to G+-microorganisms but with a quite elevated variation between volunteers (0-100 %) and collection samples (40-72 and 40-80 % for S. enterica sv. Typhimurium and S. sonnei, respectively). On the other hand, only three among 143 G- -isolates tested showed antagonistic activity. The results showed that, at least in vitro, obligate anaerobic G+-components of the dominant human fecal microbiota present a higher potential for antagonism against the enteropathogenic models tested than do G- -bacteria.
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Affiliation(s)
- D A Gomes
- Departamento de Microbiologia, and bDepartamento de Biologia Geral, I.C.B., Universidade Federal de Minas Gerais, Belo Horizonte (MG), Brazil
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48
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Mendes CCP, Gomes DA, Thompson M, Souto NC, Goes TS, Goes AM, Rodrigues MA, Gomez MV, Nathanson MH, Leite MF. The type III inositol 1,4,5-trisphosphate receptor preferentially transmits apoptotic Ca2+ signals into mitochondria. J Biol Chem 2005; 280:40892-900. [PMID: 16192275 DOI: 10.1074/jbc.m506623200] [Citation(s) in RCA: 219] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
There are three isoforms of the inositol 1,4,5- trisphosphate receptor (InsP(3)R), each of which has a distinct effect on Ca(2+) signaling. However, it is not known whether each isoform similarly plays a distinct role in the activation of Ca(2+)-mediated events. To investigate this question, we examined the effects of each InsP(3)R isoform on transmission of Ca(2+) signals to mitochondria and induction of apoptosis. Each isoform was selectively silenced using isoform-specific small interfering RNA in Chinese hamster ovary cells, which express all three InsP(3)R isoforms. ATP-induced cytosolic Ca(2+) signaling patterns were altered, regardless of which isoform was silenced, but in a different fashion depending on the isoform. ATP also induced Ca(2+) signals in mitochondria, which were inhibited more effectively by silencing the type III InsP(3)R than by silencing either the type I or type II isoform. The type III isoform also co-localized most strongly with mitochondria. When apoptosis was induced by activation of either the extrinsic or intrinsic apoptotic pathway, induction was reduced most effectively by silencing the type III InsP(3)R. These findings provide evidence that the type III isoform of the InsP(3)R plays a special role in induction of apoptosis by preferentially transmitting Ca(2+) signals into mitochondria.
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Affiliation(s)
- Carolina C P Mendes
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
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49
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Gomes DA, Guatimosim C, Gomez RS, Leite MF, Vieira LB, Prado MA, Romano-Silva MA, Gomez MV. Effect of halothane on the release of [Ca2+]i in dorsal root ganglion neurons. Neuroreport 2004; 15:1187-90. [PMID: 15129171 DOI: 10.1097/00001756-200405190-00021] [Citation(s) in RCA: 5] [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: 11/26/2022]
Abstract
We investigated the effect of the volatile anaesthetic halothane on [Ca2+]i of dorsal root ganglion neurons. Halothane was able to increase [Ca2+]i in those neurons in a dose-dependent manner and independent of extracellular calcium. However, halothane action was inhibited by BAPTA-AM, suggesting the involvement of intracellular calcium stores. Dantrolene, an inhibitor of ryanodine-sensitive calcium stores had no effect while 2-APB, an inhibitor of IP3-sensitive calcium store reduced by 78% the halothane-evoked increase on [Ca2+]i. These data suggests that halothane increased [Ca2+]i of ganglion neurons through calcium release from IP3-sensitive calcium store. One possible consequence of the halothane action is to alter presynaptic activity and signaling pathways that influence neurotransmission.
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Affiliation(s)
- Dawidson A Gomes
- Departamento de Farmacologia, Fisiologia e Biofísica, UFMG, Belo Horizonte, Minas Gerais, Brazil
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50
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Ventura RR, Gomes DA, Reis WL, Elias LLK, Castro M, Valença MM, Carnio EC, Rettori V, McCann SM, Antunes-Rodrigues J. Nitrergic modulation of vasopressin, oxytocin and atrial natriuretic peptide secretion in response to sodium intake and hypertonic blood volume expansion. Braz J Med Biol Res 2002; 35:1101-9. [PMID: 12219182 DOI: 10.1590/s0100-879x2002000900011] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.6] [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: 11/22/2022] Open
Abstract
The central nervous system plays an important role in the control of renal sodium excretion. We present here a brief review of physiologic regulation of hydromineral balance and discuss recent results from our laboratory that focus on the participation of nitrergic, vasopressinergic, and oxytocinergic systems in the regulation of water and sodium excretion under different salt intake and hypertonic blood volume expansion (BVE) conditions. High sodium intake induced a significant increase in nitric oxide synthase (NOS) activity in the medial basal hypothalamus and neural lobe, while a low sodium diet decreased NOS activity in the neural lobe, suggesting that central NOS is involved in the control of sodium balance. An increase in plasma concentrations in vasopressin (AVP), oxytocin (OT), atrial natriuretic peptide (ANP), and nitrate after hypertonic BVE was also demonstrated. The central inhibition of NOS by L-NAME caused a decrease in plasma AVP and no change in plasma OT or ANP levels after BVE. These data indicate that the increase in AVP release after hypertonic BVE depends on nitric oxide production. In contrast, the pattern of OT secretion was similar to that of ANP secretion, supporting the view that OT is a neuromodulator of ANP secretion during hypertonic BVE. Thus, neurohypophyseal hormones and ANP are secreted under hypertonic BVE in order to correct the changes induced in blood volume and osmolality, and the secretion of AVP in this particular situation depends on NOS activity.
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Affiliation(s)
- R R Ventura
- Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil
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