1
|
Oliveira BM, Sidónio B, Correia A, Pinto A, Azevedo MM, Sampaio P, Ferreira PG, Vilanova M, Teixeira L. Cytokine production by bovine adipose tissue stromal vascular fraction cells upon Neospora caninum stimulation. Sci Rep 2024; 14:8444. [PMID: 38600105 PMCID: PMC11006870 DOI: 10.1038/s41598-024-58885-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 04/04/2024] [Indexed: 04/12/2024] Open
Abstract
In bovines few studies addressed the contribution of adipose tissue to the host immune response to infection. Here we evaluated the in vitro response of bovine adipose tissue stromal vascular fraction (SVF) cells to the protozoan parasite Neospora caninum, using live and freeze-killed tachyzoites. Live N. caninum induced the production of IL-6, IL-1β and IL-10 by SVF cells isolated from subcutaneous adipose tissue (SAT), while in mesenteric adipose tissue (MAT) SVF cell cultures only IL-1β and IL-10 production was increased, showing slight distinct responses between adipose tissue depots. Whereas a clear IL-8 increase was detected in peripheral blood leucocytes (PBL) culture supernatants in response to live N. caninum, no such increase was observed in SAT or MAT SVF cell cultures. Nevertheless, in response to LPS, increased IL-8 levels were detected in all cell cultures. IL-10 levels were always increased in response to stimulation (live, freeze-killed N. caninum and LPS). Overall, our results show that bovine adipose tissue SVF cells produce cytokines in response to N. caninum and can therefore be putative contributors to the host immune response against this parasite.
Collapse
Affiliation(s)
- Bárbara M Oliveira
- UMIB-Unidade Multidisciplinar de Investigação Biomédica, ICBAS-Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
- ITR-Laboratory for Integrative and Translational Research in Population Health, 4050-290, Porto, Portugal
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
| | - Beatriz Sidónio
- UMIB-Unidade Multidisciplinar de Investigação Biomédica, ICBAS-Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
- ITR-Laboratory for Integrative and Translational Research in Population Health, 4050-290, Porto, Portugal
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
| | - Alexandra Correia
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
| | - Ana Pinto
- UMIB-Unidade Multidisciplinar de Investigação Biomédica, ICBAS-Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
- ITR-Laboratory for Integrative and Translational Research in Population Health, 4050-290, Porto, Portugal
| | - Maria M Azevedo
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
| | - Paula Sampaio
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
| | - Paula G Ferreira
- UMIB-Unidade Multidisciplinar de Investigação Biomédica, ICBAS-Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
- ITR-Laboratory for Integrative and Translational Research in Population Health, 4050-290, Porto, Portugal
| | - Manuel Vilanova
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 4200-135, Porto, Portugal
- ICBAS-Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal
| | - Luzia Teixeira
- UMIB-Unidade Multidisciplinar de Investigação Biomédica, ICBAS-Instituto de Ciências Biomédicas de Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 4050-313, Porto, Portugal.
- ITR-Laboratory for Integrative and Translational Research in Population Health, 4050-290, Porto, Portugal.
| |
Collapse
|
2
|
Costa D, Pereira-Silva P, Sousa P, Pinto V, Borges J, Vaz F, Minas G, Sampaio P. Critical Issues on the Surface Functionalization of Plasmonic Au-Ag/TiO 2 Thin Films with Thiolated Oligonucleotide-Based Biorecognition Elements. Biosensors (Basel) 2024; 14:159. [PMID: 38667152 PMCID: PMC11048063 DOI: 10.3390/bios14040159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/28/2024]
Abstract
This work reports on the surface functionalization of a nanomaterial supporting localized surface plasmon resonances (LSPRs) with (synthetic) thiolated oligonucleotide-based biorecognition elements, envisaging the development of selective LSPR-based DNA biosensors. The LSPR thin-film transducers are composed of noble metal nanoparticles (NPs) embedded in a TiO2 dielectric matrix, produced cost-effectively and sustainably by magnetron sputtering. The study focused on the immobilization kinetics of thiolated oligonucleotide probes as biorecognition elements, followed by the evaluation of hybridization events with the target probe. The interaction between the thiolated oligonucleotide probe and the transducer's surface was assessed by monitoring the LSPR signal with successive additions of probe solution through a microfluidic device. The device was specifically designed and fabricated for this work and adapted to a high-resolution LSPR spectroscopy system with portable characteristics. Benefiting from the synergetic characteristics of Ag and Au in the form of bimetallic nanoparticles, the Au-Ag/TiO2 thin film proved to be more sensitive to thiolated oligonucleotide binding events. Despite the successful surface functionalization with the biorecognition element, the detection of complementary oligonucleotides revealed electrostatic repulsion and steric hindrance, which hindered hybridization with the target oligonucleotide. This study points to an effect that is still poorly described in the literature and affects the design of LSPR biosensors based on nanoplasmonic thin films.
Collapse
Affiliation(s)
- Diogo Costa
- Center of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal (P.P.-S.); (P.S.)
- Physics Center of Minho and Porto Universities (CF-UM-UP), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- Center for Microelectromechanical Systems (CMEMS-UMinho), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal; (P.S.); (V.P.); (G.M.)
| | - Patrícia Pereira-Silva
- Center of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal (P.P.-S.); (P.S.)
- Physics Center of Minho and Porto Universities (CF-UM-UP), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
| | - Paulo Sousa
- Center for Microelectromechanical Systems (CMEMS-UMinho), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal; (P.S.); (V.P.); (G.M.)
- LABBELS—Associate Laboratory, 4800-122 Braga, Portugal, and 4800-058 Guimarães, Portugal
| | - Vânia Pinto
- Center for Microelectromechanical Systems (CMEMS-UMinho), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal; (P.S.); (V.P.); (G.M.)
- LABBELS—Associate Laboratory, 4800-122 Braga, Portugal, and 4800-058 Guimarães, Portugal
| | - Joel Borges
- Physics Center of Minho and Porto Universities (CF-UM-UP), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
| | - Filipe Vaz
- Physics Center of Minho and Porto Universities (CF-UM-UP), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal;
- LaPMET—Laboratory of Physics for Materials and Emergent Technologies, University of Minho, 4710-057 Braga, Portugal
- Material Science Department, Transilvania University of Brasov, 29 Eroilor Blvd., 500036 Brasov, Romania
| | - Graça Minas
- Center for Microelectromechanical Systems (CMEMS-UMinho), Campus de Azurém, University of Minho, 4800-058 Guimarães, Portugal; (P.S.); (V.P.); (G.M.)
- LABBELS—Associate Laboratory, 4800-122 Braga, Portugal, and 4800-058 Guimarães, Portugal
| | - Paula Sampaio
- Center of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710-057 Braga, Portugal (P.P.-S.); (P.S.)
| |
Collapse
|
3
|
Costa-Barbosa A, Ferreira D, Pacheco MI, Casal M, Duarte HO, Gomes C, Barbosa AM, Torrado E, Sampaio P, Collins T. Candida albicans chitinase 3 with potential as a vaccine antigen: production, purification, and characterisation. Biotechnol J 2024; 19:e2300219. [PMID: 37876300 DOI: 10.1002/biot.202300219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 10/26/2023]
Abstract
Chitinases are widely studied enzymes that have already found widespread application. Their continued development and valorisation will be driven by the identification of new and improved variants and/or novel applications bringing benefits to industry and society. We previously identified a novel application for chitinases wherein the Candida albicans cell wall surface chitinase 3 (Cht3) was shown to have potential in vaccine applications as a subunit antigen against fungal infections. In the present study, this enzyme was investigated further, developing production and purification protocols, enriching our understanding of its properties, and advancing its application potential. Cht3 was heterologously expressed in Pichia pastoris and a 4-step purification protocol developed and optimised: this involves activated carbon treatment, hydrophobic interaction chromatography, ammonium sulphate precipitation, and gel filtration chromatography. The recombinant enzyme was shown to be mainly O-glycosylated and to retain the epitopes of the native protein. Functional studies showed it to be highly specific, displaying activity on chitin, chitosan, and chito-oligosaccharides larger than chitotriose only. Furthermore, it was shown to be a stable enzyme, exhibiting activity, and stability over broad pH and temperature ranges. This study represents an important step forward in our understanding of Cht3 and contributes to its development for application.
Collapse
Affiliation(s)
- Augusto Costa-Barbosa
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Diogo Ferreira
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Maria Inês Pacheco
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Margarida Casal
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Henrique Oliveira Duarte
- IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Catarina Gomes
- IPATIMUP - Institute of Molecular Pathology and Immunology of the University of Porto, Porto, Portugal
- i3S - Institute for Research and Innovation in Health, University of Porto, Porto, Portugal
| | - Ana Margarida Barbosa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Egídio Torrado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Tony Collins
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET), Department of Biology, University of Minho, Braga, Portugal
- Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| |
Collapse
|
4
|
Costa-Barbosa A, Pacheco MI, Carneiro C, Botelho C, Gomes AC, Real Oliveira MECD, Collins T, Vilanova M, Pais C, Correia A, Sampaio P. Design of a lipid nano-delivery system containing recombinant Candida albicans chitinase 3 as a potential vaccine against fungal infections. Biomed Pharmacother 2023; 166:115362. [PMID: 37633051 DOI: 10.1016/j.biopha.2023.115362] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/20/2023] [Accepted: 08/22/2023] [Indexed: 08/28/2023] Open
Abstract
Opportunistic fungi cause lethal systemic infections and impose high medical costs to health systems. The World Health Organization has recognized the importance of fungal infections, including them in its global priority list guiding research, development, and discovery of new therapeutic approaches. Fungal vaccine development has been proposed as one of the treatment and prevention strategies in the last decade. In this study, we present the design of a lipid antigen delivery system based on Dioctadecyldimethylammonium bromide: Monoolein (DODAB: MO) containing recombinant Candida albicans Chitinase 3 (Cht3) for modulation the immune response against fungal infections. Several DODAB:MO liposomes containing Cht3 were prepared and those prepared by the incubation method and containing 5 µg/mL Cht3 were selected due to their favorable size, ζ-potential and stability, suited for antigen delivery applications. The encapsulation of Cht3 in these liposomes resulted in a significant increase in cellular uptake compared to empty liposomes, demonstrating their efficacy in delivering the antigen. Moreover, the liposomes proved to be safe for use in immunization procedures. Subcutaneous administration of Cht3 liposomes elicited a Th1/Th17 immune response profile, associated with the production of high levels of antibodies against Cht3. These antibodies recognized both the native and the recombinant forms of the protein, opsonizing mother-yeast at the cell scars, which has the potential to disrupt cell separation and hinder yeast growth. The findings suggest that the designed lipid antigen delivery system shows promise as a potential candidate for enhancing immune responses against fungal infections, offering a valuable strategy for future fungal vaccine development.
Collapse
Affiliation(s)
- Augusto Costa-Barbosa
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Maria Inês Pacheco
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Catarina Carneiro
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Cláudia Botelho
- Centre of Biological Engineering (CEB), University of Minho, Campus of Gualtar, 4710-057 Braga, Portugal
| | - Andreia C Gomes
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M Elisabete C D Real Oliveira
- CF-UM-UP - Centro de Física das Universidades do Minho e Porto, Departamento de Física da Universidade do Minho, 4710-057 Braga, Portugal
| | - Tony Collins
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Manuel Vilanova
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Célia Pais
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Alexandra Correia
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; IBMC, Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal; Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA) / Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal; Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| |
Collapse
|
5
|
Fialho L, Costa-Barbosa A, Sampaio P, Carvalho S. Effects of Zn-ZnO Core-Shell Nanoparticles on Antimicrobial Mechanisms and Immune Cell Activation. ACS Appl Nano Mater 2023; 6:17149-17160. [PMID: 37772266 PMCID: PMC10526648 DOI: 10.1021/acsanm.3c03241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 08/22/2023] [Indexed: 09/30/2023]
Abstract
The deposition of zinc-zinc oxide nanoparticles (Zn-ZnO NPs) onto porous Ta2O5 surfaces enriched with calcium phosphate by DC magnetron sputtering was investigated to improve the surface antimicrobial activity without triggering an inflammatory response. Different sizes and amounts of Zn NPs obtained by two optimized different depositions and an additional thin carbon (C) layer deposited over the NPs were explored. The deposition of the Zn NPs and the C layer mitigates the surface porosity, increasing the surface hydrophobicity and decreasing the surface roughness. The possible antimicrobial effect and immune system activation of Zn-ZnO NPs were investigated in Candida albicans and macrophage cells, respectively. It was found that the developed surfaces displayed a fungistatic behavior, as they impair the growth of C. albicans between 5 and 24 h of culture. This behavior was more evident on the surfaces with bigger NPs and the highest amounts of Zn. The same trend was observed in both reactive oxygen species (ROS) generation and loss of C. albicans' membrane integrity. After 24 h of culture, cell toxicity was also dependent on the amount of the NPs. Cell toxicity was observed in surfaces with the highest amount of Zn NPs and with the C layer, while cells were able to grow without any signs of cytotoxicity in the porous surfaces with the lowest amount of NPs. The same Zn-dose-dependent behavior was noticed in the TNF-α production. The Zn-containing surfaces show a vastly inferior cytokine secretion than the lipopolysaccharide (LPS)-stimulated cells, indicating that the modified surfaces do not induce an inflammatory response from macrophage cells. This study provides insights for understanding the Zn amount threshold that allows a simultaneous inhibition of the fungi growth with no toxic effect and the main antimicrobial mechanisms of Zn-ZnO NPs, contributing to future clinical applications.
Collapse
Affiliation(s)
- Luísa Fialho
- CEMMPRE,
Departamento de Engenharia Mecânica, Universidade de Coimbra, 3030-788 Coimbra, Portugal
| | - Augusto Costa-Barbosa
- CBMA,
Departamento de Biologia, Campus de Gualtar, Universidade do Minho, 4710-057 Braga, Portugal
| | - Paula Sampaio
- CBMA,
Departamento de Biologia, Campus de Gualtar, Universidade do Minho, 4710-057 Braga, Portugal
| | - Sandra Carvalho
- CEMMPRE,
Departamento de Engenharia Mecânica, Universidade de Coimbra, 3030-788 Coimbra, Portugal
- IPN
− LED & MAT − Instituto Pedro Nunes, Rua Pedro Nunes, 3030-199 Coimbra, Portugal
| |
Collapse
|
6
|
González-Ballesteros N, Fernandes M, Machado R, Sampaio P, Gomes AC, Cavazza A, Bigi F, Rodríguez-Argüelles MC. Valorisation of the Invasive Macroalgae Undaria pinnatifida (Harvey) Suringar for the Green Synthesis of Gold and Silver Nanoparticles with Antimicrobial and Antioxidant Potential. Mar Drugs 2023; 21:397. [PMID: 37504928 PMCID: PMC10381743 DOI: 10.3390/md21070397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/28/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Bacterial and fungal infections are a challenging global problem due to the reported increasing resistance of pathogenic microorganisms to conventional antimicrobials. Nanomaterials are a promising strategy to fight infections caused by multidrug-resistant microbes. In this work, gold (Au@UP) and silver (Ag@UP) nanoparticles were produced for the first time by green synthesis using an aqueous extract of the invasive macroalgae Undaria pinnatifida (UP). The nanoparticles were characterized by a wide range of physicochemical techniques. Au@UP and Ag@UP demonstrated to be spherical and crystalline with an average size of 6.8 ± 1.0 nm and 14.1 ± 2.8 nm, respectively. Carbohydrates and proteins of the UP extract may participate in the synthesis and capping of the nanoparticles. The UP extract, Ag@UP, and Au@UP were assessed for their antimicrobial activity against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Candida albicans, and Candida auris. Ag@UP showed the highest antimicrobial activity with very low MIC and MBC values for all the tested bacteria, and Au@UP demonstrated to be very effective against biofilm-producing bacteria. The antifungal properties of both Ag@UP and Au@UP were remarkable, inhibiting hyphae formation. This study points towards a very promising biomedical exploitation of this invasive brown algae.
Collapse
Affiliation(s)
| | - Mário Fernandes
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Raúl Machado
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Andreia C. Gomes
- Centre of Molecular and Environmental Biology (CBMA)/Aquatic Research Network (ARNET) Associate Laboratory, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
- Institute of Science and Innovation for Sustainability (IB-S), Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Antonella Cavazza
- Dipartimento Scienze Chimiche, Della Vita e della Sostenibilità Ambientale, Università di Parma, 43124 Parma, Italy
| | - Franca Bigi
- Dipartimento Scienze Chimiche, Della Vita e della Sostenibilità Ambientale, Università di Parma, 43124 Parma, Italy
- Institute of Materials for Electronics and Magnetism, National Research Council, 43124 Parma, Italy
| | | |
Collapse
|
7
|
Silva-Ribeiro T, Coelho E, Genisheva Z, Oliveira JM, Correia-Pinto J, Sampaio P, Moura RS. Comparative study of e-cigarette aerosol and cigarette smoke effect on ex vivo embryonic chick lung explants. Toxicol Lett 2023; 376:13-19. [PMID: 36638931 DOI: 10.1016/j.toxlet.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 12/04/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
Electronic cigarette usage has significantly expanded among young people and pregnant women in the last decade. Although there are already some data regarding the short- and long-term consequences of e-cigarettes on human health, their effect on embryo and lung development still needs to be fully disclosed. In this sense, this study describes, for the first time, the impact of electronic cigarette aerosol on early lung development. For this purpose, ex vivo chick (Gallus gallus) embryonic lungs were cultured in vitro for 48 h in e-cigarette aerosol exposed-medium or unexposed medium. Chick lung explants were also cultured in a cigarette smoke-exposed medium for comparison purposes. Lung explants were morphologically analyzed to assess the impact on lung growth. Additionally, TNF-α levels were determined in the supernatant as a marker of pro-inflammatory response. The results suggest that electronic cigarette aerosol impairs lung growth and promotes lung inflammation. However, its impact on early lung growth seems less detrimental than conventional cigarette smoke. This work provides significant data regarding the impact of e-cig aerosol, adding to the efforts to fully understand its effect on embryo development. The validation of these effects may eventually lead to new tobacco control recommendations for pregnant women.
Collapse
Affiliation(s)
- Tiago Silva-Ribeiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal
| | - Eduardo Coelho
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Zlatina Genisheva
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - José M Oliveira
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Jorge Correia-Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal; Department of Pediatric Surgery, Hospital de Braga, Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal; Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, 4710-057 Braga, Portugal
| | - Rute S Moura
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga, Portugal.
| |
Collapse
|
8
|
Diniz F, Azevedo M, Sousa F, Osório H, Campos D, Sampaio P, Gomes J, Sarmento B, Reis CA. Polymeric nanoparticles targeting Sialyl-Tn in gastric cancer: A live tracking under flow conditions. Mater Today Bio 2022; 16:100417. [PMID: 36105678 PMCID: PMC9465339 DOI: 10.1016/j.mtbio.2022.100417] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/29/2022] [Accepted: 09/01/2022] [Indexed: 11/30/2022]
Abstract
Drug delivery using nanoparticles (NPs) represents a potential approach for therapy in cancer, such gastric cancer (GC) due to their targeting ability and controlled release properties. The use of advanced nanosystems that deliver anti-cancer drugs specifically to tumor cells may strongly rely on the expression of cancer-associated targets. Glycans aberrantly expressed by cancer cells are attractive targets for such delivery strategy. Sialylated glycans, such as Sialyl-Tn (STn) are aberrantly expressed in several epithelial tumors, including GC, being a potential target for a delivery nanosystem. The aim of this study was the development of NPs surface-functionalized with a specific antibody targeting the STn glycan and further evaluate this nanosystem effectiveness regarding its specificity and recognition capacity. Our results showed that the NPs surface-functionalized with anti-STn antibody efficiently are recognized by cells displaying the cancer-associated STn antigen under static and live cell monitoring flow conditions. This uncovers the potential use of such NPs for drug delivery in cancer. However, flow exposure was disclosed as an important biomechanical parameter to be taken into consideration. Here we presented an innovative and successful methodology to live track the NPs targeting STn antigen under shear stress, simulating the physiological flow. We demonstrate that unspecific binding of NPs agglomerates did not occur under flow conditions, in contrast with static assays. This robust approach can be applied for in vitro drug studies, giving valuable insights for in vivo studies.
Collapse
Affiliation(s)
- Francisca Diniz
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP -Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal
- ICBAS- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
| | - Maria Azevedo
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Flávia Sousa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- INEB- Instituto Nacional de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- CESPU-IUCS, 4585-116 Gandra, Portugal
| | - Hugo Osório
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP -Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal
| | - Diana Campos
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP -Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal
| | - Paula Sampaio
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Joana Gomes
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP -Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal
| | - Bruno Sarmento
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- INEB- Instituto Nacional de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- CESPU-IUCS, 4585-116 Gandra, Portugal
| | - Celso A. Reis
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IPATIMUP -Institute of Molecular Pathology and Immunology, University of Porto, 4200-135 Porto, Portugal
- ICBAS- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4050-313 Porto, Portugal
- FMUP- Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
- Corresponding author. i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal.
| |
Collapse
|
9
|
Mendonça A, Carvalho-Pereira J, Franco-Duarte R, Sampaio P. Correction to: Optimization of a Quantitative PCR Methodology for Detection of Aspergillus spp. and Rhizopus arrhizus. Mol Diagn Ther 2022; 26:527. [PMID: 35849301 DOI: 10.1007/s40291-022-00607-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
Affiliation(s)
- Alexandre Mendonça
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Joana Carvalho-Pereira
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal.
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| |
Collapse
|
10
|
Mendonça A, Carvalho-Pereira J, Franco-Duarte R, Sampaio P. Optimization of a Quantitative PCR Methodology for Detection of Aspergillus spp. and Rhizopus arrhizus. Mol Diagn Ther 2022; 26:511-525. [PMID: 35710958 PMCID: PMC9202985 DOI: 10.1007/s40291-022-00595-1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/02/2022] [Indexed: 11/25/2022]
Abstract
Introduction Multiplex quantitative polymerase chain reaction (qPCR) methods for the detection of Aspergillus spp. based only on SYBR Green and melting curve analysis of PCR products are difficult to develop because most targets are located within ITS regions. The aim of this study was to adapt our previously developed methodology based on a multiplex PCR assay coupled with GeneScan analysis to provide a qPCR method. Methods A SYBR Green-based real-time PCR assay was optimized to detect A. fumigatus, A. flavus, A. niger, A. terreus, and R. arrhizus in a multiplex assay and applied to cultured fungi and spiked plasma. Results Different melting temperatures allowed identification of all five pathogens and discrimination between them, even in samples with low amounts of fungal gDNA (from 1.3 to 33.0 pg/μL), which has been reported previously as problematic. No false-positive results were obtained for non-target species, including bacteria and human DNA. This method allowed detection of fungal pathogens in human plasma spiked with fungal DNA and in coinfections of A. niger/R. arrhizus. Discussion This work provides evidence for the use of a qPCR multiplex method based on SYBR Green and melting curve analysis of PCR products for the detection of A. fumigatus, A. flavus, A. niger, A. terreus, and R. arrhizus. The proposed method is simpler and less expensive than available kits based on fluorescent probes and can be used for aiding diagnosis of the most relevant invasive filamentous fungi, particularly in low-income health care institutions. Supplementary Information The online version contains supplementary material available at 10.1007/s40291-022-00595-1.
Collapse
Affiliation(s)
- Alexandre Mendonça
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Joana Carvalho-Pereira
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal.
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| |
Collapse
|
11
|
Franco-Duarte R, Seabra CL, Rocha SM, Henriques M, Sampaio P, Teixeira JA, Botelho CM. Metabolic profile of Candida albicans and Candida parapsilosis interactions within dual-species biofilms. FEMS Microbiol Ecol 2022; 98:6550018. [PMID: 35298615 DOI: 10.1093/femsec/fiac031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 02/15/2022] [Accepted: 03/14/2022] [Indexed: 11/14/2022] Open
Abstract
Within the oral cavity, the ability of Candida species to adhere and form biofilms is well recognized, especially when C. albicans is considered. Lately, a knowledge gap has been identified regarding dual-species communication of Candida isolates, as a way to increase virulence, with evidences being collected to support the existence of interactions between C. albicans and C. parapsilosis. The present work evaluated the synergistic effect of the two Candida species, and explored chemical interactions between cells, evaluating secreted extracellular alcohols and their relation with yeasts´ growth and matrix composition. Four clinical strains of C. albicans and C. parapsilosis species, isolated from single infections of different patients or from co-infections of a same patient, were tested. It was found that dual-species biofilms negatively impacted the growth of C. parapsilosis and their biofilm matrix, in comparison with mono-species biofilms, and had minor effects on the biofilm biomass. Alcohol secretion revealed to be species- and strain-dependent. However, some dual-species cultures produced much higher amounts of some alcohols (E-nerolidol and E, E-Farnesol) than the respective single cultures, which proves the existence of a synergy between species. These results show evidence that interactions between Candida species affect the biofilm matrix, which is a key element of oral biofilms.
Collapse
Affiliation(s)
- Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - Catarina L Seabra
- Centre of Biological Engineering (CEB), Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Braga, Portugal
| | - Silvia M Rocha
- Department of Chemistry & LAQV-REQUIMTE, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mariana Henriques
- Centre of Biological Engineering (CEB), Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Braga, Portugal
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Braga, Portugal
| | - José A Teixeira
- Centre of Biological Engineering (CEB), Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Braga, Portugal
| | - Cláudia M Botelho
- Centre of Biological Engineering (CEB), Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, Braga, Portugal
| |
Collapse
|
12
|
Piloto AML, Ribeiro DSM, Rodrigues SSM, Santos JLM, Sampaio P, Sales MGF. Cellulose-based hydrogel on quantum dots with molecularly imprinted polymers for the detection of CA19-9 protein cancer biomarker. Mikrochim Acta 2022; 189:134. [PMID: 35247077 DOI: 10.1007/s00604-022-05230-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 10/29/2021] [Accepted: 02/14/2022] [Indexed: 01/08/2023]
Abstract
Molecularly imprinted polymers MIPs were successfully assembled around quantum dots (QDs), for the detection of the protein biomarker CA19-9 associated to pancreatic cancer (PC). These imprinted materials MIP@QDs were incorporated within the cellulose hydrogel with retention of its conformational structure inside the binding cavities. The concept is to use MIPs which function as the biorecognition elements, conjugated to cadmium telluride QDs as the sensing system. The excitation wavelength was set to 477 nm and the fluorescence signal was measured at its maximum intensity, with an emission range between 530 and 780 nm. The fluorescence quenching of the imprinted cellulose hydrogels occurred with increasing concentrations of CA19-9, showing linearity in the range 2.76 × 10 -2 - 5.23 × 10 2 U/ml, in a 1000-fold diluted human serum. Replicates of the imprinted hydrogel show a linear response below the cut-off values for pancreatic cancer diagnosis (< 23 U/ml), a limit of detection of 1.58 × 10 -3 U/ml and an imprinting factor (IF) of 1.76. In addition to the fact that the imprinted cellulose hydrogel displays good stability and selectivity towards CA19-9 when compared with the non-imprinted controls, the conjugation of MIPs to QDs increases the sensitivity of the system for an optical detection method towards ranges within clinical significance. This fact shows potential for the imprinted hydrogel to be applied as a sensitive, low-cost format for point-of-care tests (PoCTs).
Collapse
Affiliation(s)
- Ana Margarida L Piloto
- BioMark/ISEP, School of Engineering of the Polytechnic Institute of Porto, Porto, Portugal. .,Centre of Biological Engineering, CEB, Minho University, Braga, Portugal.
| | - David S M Ribeiro
- LAQV, REQUIMTE, Faculty of Pharmacy, Laboratory of Applied Chemistry, Department of Chemical Sciences, University of Porto, Porto, Portugal
| | - S Sofia M Rodrigues
- LAQV, REQUIMTE, Faculty of Pharmacy, Laboratory of Applied Chemistry, Department of Chemical Sciences, University of Porto, Porto, Portugal
| | - João L M Santos
- LAQV, REQUIMTE, Faculty of Pharmacy, Laboratory of Applied Chemistry, Department of Chemical Sciences, University of Porto, Porto, Portugal
| | - Paula Sampaio
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade Do Porto, Porto, Portugal.,IBMC - Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Maria Goreti Ferreira Sales
- BioMark/ISEP, School of Engineering of the Polytechnic Institute of Porto, Porto, Portugal.,Centre of Biological Engineering, CEB, Minho University, Braga, Portugal.,BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
| |
Collapse
|
13
|
Mendonça A, Santos H, Franco-Duarte R, Sampaio P. Fungal infections diagnosis - Past, present and future. Res Microbiol 2022; 173:103915. [PMID: 34863883 PMCID: PMC8634697 DOI: 10.1016/j.resmic.2021.103915] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 01/07/2023]
Abstract
Despite the scientific advances observed in the recent decades and the emergence of new methodologies, the diagnosis of systemic fungal infections persists as a problematic issue. Fungal cultivation, the standard method that allows a proven diagnosis, has numerous disadvantages, as low sensitivity (only 50% of the patients present positive fungal cultures), and long growth time. These are factors that delay the patient's treatment and, consequently, lead to higher hospital costs. To improve the accuracy and quickness of fungal infections diagnosis, several new methodologies attempt to be implemented in clinical microbiology laboratories. Most of these innovative methods are independent of pathogen isolation, which means that the diagnosis goes from being considered proven to probable. In spite of the advantage of being culture-independent, the majority of the methods lack standardization. PCR-based methods are becoming more and more commonly used, which has earned them an important place in hospital laboratories. This can be perceived now, as PCR-based methodologies have proved to be an essential tool fighting against the COVID-19 pandemic. This review aims to go through the main steps of the diagnosis for systemic fungal infection, from diagnostic classifications, through methodologies considered as "gold standard", to the molecular methods currently used, and finally mentioning some of the more futuristic approaches.
Collapse
|
14
|
Mumtaz M, Faria S, Santos P, Carpinteiro C, Pinto V, Rodrigues S, Marques F, Rocha S, Sampaio P, Paiva JS. iLoF: a blood‐based optical fingerprinting tool for Alzheimer’s disease screening. Alzheimers Dement 2021. [DOI: 10.1002/alz.054501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
15
|
Faria SP, Carpinteiro C, Pinto V, Rodrigues SM, Alves J, Marques F, Lourenço M, Santos PH, Ramos A, Cardoso MJ, Guimarães JT, Rocha S, Sampaio P, Clifton DA, Mumtaz M, Paiva JS. Forecasting COVID-19 Severity by Intelligent Optical Fingerprinting of Blood Samples. Diagnostics (Basel) 2021; 11:diagnostics11081309. [PMID: 34441244 PMCID: PMC8392709 DOI: 10.3390/diagnostics11081309] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/14/2021] [Accepted: 07/19/2021] [Indexed: 01/08/2023] Open
Abstract
Forecasting COVID-19 disease severity is key to supporting clinical decision making and assisting resource allocation, particularly in intensive care units (ICUs). Here, we investigated the utility of time- and frequency-related features of the backscattered signal of serum patient samples to predict COVID-19 disease severity immediately after diagnosis. ICU admission was the primary outcome used to define disease severity. We developed a stacking ensemble machine learning model including the backscattered signal features (optical fingerprint), patient comorbidities, and age (AUROC = 0.80), which significantly outperformed the predictive value of clinical and laboratory variables available at hospital admission (AUROC = 0.71). The information derived from patient optical fingerprints was not strongly correlated with any clinical/laboratory variable, suggesting that optical fingerprinting brings unique information for COVID-19 severity risk assessment. Optical fingerprinting is a label-free, real-time, and low-cost technology that can be easily integrated as a front-line tool to facilitate the triage and clinical management of COVID-19 patients.
Collapse
Affiliation(s)
- Simão P. Faria
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Cristiana Carpinteiro
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Vanessa Pinto
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Sandra M. Rodrigues
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - José Alves
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Filipe Marques
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Marta Lourenço
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Paulo H. Santos
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Angélica Ramos
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - Maria J. Cardoso
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - João T. Guimarães
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- Serviço de Patologia Clínica, Centro Hospitalar Universitário de São João, 4200-319 Porto, Portugal; (A.R.); (M.J.C.)
- EPIUnit—Instituto de Saúde Pública da Universidade do Porto, 4050-600 Porto, Portugal
| | - Sara Rocha
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Paula Sampaio
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- i3S—Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
- IBMC—Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135 Porto, Portugal
| | - David A. Clifton
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford, Oxford OX3 7DQ, UK;
| | - Mehak Mumtaz
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
| | - Joana S. Paiva
- iLoF—Intelligent Lab on Fiber, Limited, Oxford OX1 2EW, UK; (S.P.F.); (C.C.); (V.P.); (S.M.R.); (J.A.); (F.M.); (M.L.); (P.H.S.); (S.R.); (P.S.); (M.M.)
- Departamento de Bioquímica, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal;
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, 4200-319 Porto, Portugal
- Correspondence:
| |
Collapse
|
16
|
Corrà MF, Sousa M, Reis I, Tanganelli F, Vila-Chã N, Sousa AP, Magalhães R, Sampaio P, Taipa R, Maia L. Advantages of an Automated Method Compared With Manual Methods for the Quantification of Intraepidermal Nerve Fiber in Skin Biopsy. J Neuropathol Exp Neurol 2021; 80:685-694. [PMID: 34041546 PMCID: PMC8357338 DOI: 10.1093/jnen/nlab045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Intraepidermal nerve fiber density (IENFD) measurements in skin biopsy are performed manually by 1–3 operators. To improve diagnostic accuracy and applicability in clinical practice, we developed an automated method for fast IENFD determination with low operator-dependency. Sixty skin biopsy specimens were stained with the axonal marker PGP9.5 and imaged using a widefield fluorescence microscope. IENFD was first determined manually by 3 independent observers. Subsequently, images were processed in their Z-max projection and the intradermal line was delineated automatically. IENFD was calculated automatically (fluorescent images automated counting [FIAC]) and compared with manual counting on the same fluorescence images (fluorescent images manual counting [FIMC]), and with classical manual counting (CMC) data. A FIMC showed lower variability among observers compared with CMC (interclass correlation [ICC] = 0.996 vs 0.950). FIMC and FIAC showed high reliability (ICC = 0.999). A moderate-to-high (ICC = 0.705) was observed between CMC and FIAC counting. The algorithm process took on average 15 seconds to perform FIAC counting, compared with 10 minutes for FIMC counting. This automated method rapidly and reliably detects small nerve fibers in skin biopsies with clear advantages over the classical manual technique.
Collapse
Affiliation(s)
- Marta Francisca Corrà
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Mafalda Sousa
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Inês Reis
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Fabiana Tanganelli
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Nuno Vila-Chã
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Ana Paula Sousa
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Rui Magalhães
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Paula Sampaio
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Ricardo Taipa
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| | - Luís Maia
- From the Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto (MFC, RM, RT, LM); Department of Neurology, Centro Hospitalar Universitário do Porto (CHUP) (MFC, IR, NV-C, APS, RM, RT, LM); Instituto de investigação e inovação em Saúde da Universidade do Porto (i3S) (MS, PS, LM), Porto, Portugal; Department of Medicine IV, Geriatrics, University Hospital, LMU Munich, Munich, Germany (FT)
| |
Collapse
|
17
|
Chalima A, de Castro LF, Burgstaller L, Sampaio P, Carolas AL, Gildemyn S, Velghe F, Ferreira BS, Pais C, Neureiter M, Dietrich T, Topakas E. Waste-derived volatile fatty acids as carbon source for added-value fermentation approaches. FEMS Microbiol Lett 2021; 368:6283741. [PMID: 34036336 DOI: 10.1093/femsle/fnab054] [Citation(s) in RCA: 4] [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: 11/23/2020] [Accepted: 05/20/2021] [Indexed: 12/12/2022] Open
Abstract
The establishment of a sustainable circular bioeconomy requires the effective material recycling from biomass and biowaste beyond composting/fertilizer or anaerobic digestion/bioenergy. Recently, volatile fatty acids attracted much attention due to their potential application as carbon source for the microbial production of high added-value products. Their low-cost production from different types of wastes through dark fermentation is a key aspect, which will potentially lead to the sustainable production of fuels, materials or chemicals, while diminishing the waste volume. This article reviews the utilization of a volatile fatty acid platform for the microbial production of polyhydroxyalkanoates, single cell oil and omega-3 fatty acids, giving emphasis on the fermentation challenges for the efficient implementation of the bioprocess and how they were addressed. These challenges were addressed through a research project funded by the European Commission under the Horizon 2020 programme entitled 'VOLATILE-Biowaste derived volatile fatty acid platform for biopolymers, bioactive compounds and chemical building blocks'.
Collapse
Affiliation(s)
- Angelina Chalima
- Industrial Biotechnology and Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, 15780 Athens, Greece
| | - Laura Fernandez de Castro
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Álava, Leonardo Da Vinci 1, 01510 Miñano, Álava, Spain
| | - Lukas Burgstaller
- Institute of Environmental Biotechnology, Department of Agrobiotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Ana Lúcia Carolas
- Biotrend SA - Biocant Park, Núcleo 04, Lote 2, 3060-197 Cantanhede, Portugal
| | | | | | | | - Celia Pais
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Markus Neureiter
- Institute of Environmental Biotechnology, Department of Agrobiotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz-Str. 20, 3430 Tulln, Austria
| | - Thomas Dietrich
- TECNALIA, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Álava, Leonardo Da Vinci 1, 01510 Miñano, Álava, Spain
| | - Evangelos Topakas
- Industrial Biotechnology and Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., Zografou Campus, 15780 Athens, Greece
| |
Collapse
|
18
|
Piloto AML, Ribeiro DSM, Rodrigues SSM, Santos JLM, Sampaio P, Sales G. Imprinted Fluorescent Cellulose Membranes for the On-Site Detection of Myoglobin in Biological Media. ACS Appl Bio Mater 2021; 4:4224-4235. [PMID: 35006835 DOI: 10.1021/acsabm.1c00039] [Citation(s) in RCA: 6] [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] [Indexed: 12/17/2022]
Abstract
In this work, the conjugation of molecularly imprinted polymers (MIPs) to quantum dots (QDs) was successfully applied in the assembly of an imprinted cellulose membrane [hydroxy ethyl cellulose (HEC)/MIP@QDs] for the specific recognition of the cardiac biomarker myoglobin (Myo) as a sensitive, user-friendly, and portable system with the potential for point-of-care (POC) applications. The concept is to use the MIPs as biorecognition elements, previously prepared on the surface of semiconductor cadmium telluride QDs as detection particles. The fluorescent quenching of the membrane occurred with increasing concentrations of Myo, showing linearity in the interval range of 7.39-291.3 pg/mL in a1000-fold diluted human serum. The best membrane showed a linear response below the cutoff values for myocardial infarction (23 ng/mL), a limit of detection of 3.08 pg/mL, and an imprinting factor of 1.65. The incorporation of the biorecognition element MIPs on the cellulose substrate brings an approach toward a portable and user-friendly device in a sustainable manner. Overall, the imprinted membranes display good stability and selectivity toward Myo when compared with the nonimprinted membranes (HEC/NIP@QDs) and have the potential to be applied as a sensitive system for Myo detection in the presence of other proteins. Moreover, the conjugation of MIPs to QDs increases the sensitivity of the system for an optical label-free detection method, reaching concentration levels with clinical significance.
Collapse
Affiliation(s)
- Ana Margarida L Piloto
- BioMark Sensor Research, School of Engineering of the Polytechnic Institute of Porto, 4249-015 Porto, Portugal.,CEB, Centre of Biological Engineering, Minho University, 4710-057 Braga, Portugal
| | - David S M Ribeiro
- Associated Laboratory for Green Chemistry LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, Porto University, 4050-313 Porto, Portugal
| | - S Sofia M Rodrigues
- Associated Laboratory for Green Chemistry LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, Porto University, 4050-313 Porto, Portugal
| | - João L M Santos
- Associated Laboratory for Green Chemistry LAQV-REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, Porto University, 4050-313 Porto, Portugal
| | - Paula Sampaio
- i3S-Institute for Research and Innovation in Health, Porto University, 4200-135 Porto, Portugal.,IBMC-Institute of Molecular and Cell Biology, Porto University, 4200-135 Porto, Portugal
| | - Goreti Sales
- BioMark Sensor Research, School of Engineering of the Polytechnic Institute of Porto, 4249-015 Porto, Portugal.,CEB, Centre of Biological Engineering, Minho University, 4710-057 Braga, Portugal.,BioMark/UC, Department of Chemical Engineering, Faculty of Sciences and Technology, University of Coimbra, 3030-790 Coimbra, Portugal
| |
Collapse
|
19
|
da Costa A, Pereira AM, Sampaio P, Rodríguez-Cabello JC, Gomes AC, Casal M, Machado R. Protein-Based Films Functionalized with a Truncated Antimicrobial Peptide Sequence Display Broad Antimicrobial Activity. ACS Biomater Sci Eng 2021; 7:451-461. [PMID: 33492122 DOI: 10.1021/acsbiomaterials.0c01262] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/29/2022]
Abstract
The increasing bacterial resistance to antibiotics is driving strong demand for new antimicrobial biomaterials. This work describes the fabrication of free-standing films exhibiting antimicrobial properties by combining, in the same polypeptide chain, an elastin-like recombinamer comprising 200 repetitions of the pentamer VPAVG (A200) and an 18-amino-acid truncated variant of the antimicrobial peptide BMAP-28, termed BMAP-18. The fusion protein BMAP-18A200 was overexpressed and conveniently purified by a simplified and scalable nonchromatographic process. Free-standing films of BMAP-18A200 demonstrated to be stable without requiring cross-linking agents and displayed high antimicrobial activity against skin pathogens including Gram-negative and Gram-positive bacteria as well as unicellular and filamentous fungi. The antimicrobial activity of the films was mediated by direct contact of cells with the film surface, resulting in compromised structural integrity of microbial cells. Furthermore, the BMAP-18A200 films showed no cytotoxicity on normal human cell lines (skin fibroblasts and keratinocytes). All of these results highlight the potential of these biotechnological multifunctional polymers as new drug-free materials to prevent and treat microbial infections.
Collapse
Affiliation(s)
- André da Costa
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Ana M Pereira
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - José Carlos Rodríguez-Cabello
- Bioforge (Group for Advanced Materials and Nanobiotechnology), Centro I+D, Universidad de Valladolid, 47011 Valladolid, Spain.,Networking Research Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), E-47011 Valladolid, Spain
| | - Andreia C Gomes
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Margarida Casal
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Raul Machado
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| |
Collapse
|
20
|
Carvalho-Pereira J, Fernandes F, Araújo R, Springer J, Loeffler J, Buitrago MJ, Pais C, Sampaio P. Multiplex PCR Based Strategy for Detection of Fungal Pathogen DNA in Patients with Suspected Invasive Fungal Infections. J Fungi (Basel) 2020; 6:E308. [PMID: 33238439 PMCID: PMC7712097 DOI: 10.3390/jof6040308] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/15/2020] [Accepted: 11/20/2020] [Indexed: 12/12/2022] Open
Abstract
A new and easy polymerase chain reaction (PCR) multiplex strategy, for the identification of the most common fungal species involved in invasive fungal infections (IFI) was developed in this work. Two panels with species-specific markers were designed, the Candida Panel for the identification of Candida species, and the Filamentous Fungi Panel for the identification of Aspergillus species and Rhizopusarrhizus. The method allowed the correct identification of all targeted pathogens using extracted DNA or by colony PCR, showed no cross-reactivity with nontargeted species and allowed identification of different species in mixed infections. Sensitivity reached 10 to 1 pg of DNA and was suitable for clinical samples from sterile sites, with a sensitivity of 89% and specificity of 100%. Overall, the study showed that the new method is suitable for the identification of the ten most important fungal species involved in IFI, not only from positive blood cultures but also from clinical samples from sterile sites. The method provides a unique characteristic, of seeing the peak in the specific region of the panel with the correct fluorescence dye, that aids the ruling out of unspecific amplifications. Furthermore, the panels can be further customized, selecting markers for different species and/or resistance genes.
Collapse
Affiliation(s)
- Joana Carvalho-Pereira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710 Braga, Portugal; (J.C.-P.); (F.F.); (C.P.)
| | - Filipa Fernandes
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710 Braga, Portugal; (J.C.-P.); (F.F.); (C.P.)
| | - Ricardo Araújo
- Department Medical Biotechnology, Health Sciences, Flinders University, Adelaide 5042, Australia;
| | - Jan Springer
- Department of Internal Medicine II, University Hospital of Würzburg, 97080 Würzburg, Germany; (J.S.); (J.L.)
| | - Juergen Loeffler
- Department of Internal Medicine II, University Hospital of Würzburg, 97080 Würzburg, Germany; (J.S.); (J.L.)
| | - María José Buitrago
- Mycology Reference Laboratory, National Centre of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain;
| | - Célia Pais
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710 Braga, Portugal; (J.C.-P.); (F.F.); (C.P.)
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, 4710 Braga, Portugal; (J.C.-P.); (F.F.); (C.P.)
| |
Collapse
|
21
|
Gerós-Mesquita Â, Carvalho-Pereira J, Franco-Duarte R, Alves A, Gerós H, Pais C, Sampaio P. Oral Candida albicans colonization in healthy individuals: prevalence, genotypic diversity, stability along time and transmissibility. J Oral Microbiol 2020; 12:1820292. [PMID: 33062200 PMCID: PMC7534343 DOI: 10.1080/20002297.2020.1820292] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/31/2020] [Accepted: 09/03/2020] [Indexed: 11/17/2022] Open
Abstract
In this study, 181 healthy individuals, including 29 couples, were analysed regarding oral yeast colonization using a culture-based approach. Results showed that 39% of the individuals were yeast carriers, 89% being colonized with Candida albicans, 5% with C. guilliermondi, 3% with C. lusitaniae and 3% with C. parapsilosis. Sixty-two percent of the couples had at least one member colonized. Colonization and CFU counts were higher in the couples´ group. Eighty percent of the volunteers were colonized with C. albicans strains with only one CAI genotype, while two but similar CAI genotypes inhabited the oral cavity of the remaining 20% individuals. The same CAI genotypes were found in 66.6% of the couples when both were colonized. Our results indicate that the intimacy among couples increases the probability of heavy cross-colonization, which is potentiated when one member of the couple is a smoker.
Collapse
Affiliation(s)
- Ângela Gerós-Mesquita
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
| | - Joana Carvalho-Pereira
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
| | - Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
| | | | - Hernâni Gerós
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
- CITAB (Centre for the Research and Technology of Agro-Environmental and Biological Sciences) / University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
- CEB (Centre of Biological Engineering) /Department of Biological Engineering / University of Minho, Braga, Portugal
| | - Célia Pais
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, Braga, Portugal
| |
Collapse
|
22
|
Costa AR, Sousa SC, Pinto-Costa R, Mateus JC, Lopes CD, Costa AC, Rosa D, Machado D, Pajuelo L, Wang X, Zhou FQ, Pereira AJ, Sampaio P, Rubinstein BY, Mendes Pinto I, Lampe M, Aguiar P, Sousa MM. The membrane periodic skeleton is an actomyosin network that regulates axonal diameter and conduction. eLife 2020; 9:55471. [PMID: 32195665 PMCID: PMC7105375 DOI: 10.7554/elife.55471] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 03/19/2020] [Indexed: 02/06/2023] Open
Abstract
Neurons have a membrane periodic skeleton (MPS) composed of actin rings interconnected by spectrin. Here, combining chemical and genetic gain- and loss-of-function assays, we show that in rat hippocampal neurons the MPS is an actomyosin network that controls axonal expansion and contraction. Using super-resolution microscopy, we analyzed the localization of axonal non-muscle myosin II (NMII). We show that active NMII light chains are colocalized with actin rings and organized in a circular periodic manner throughout the axon shaft. In contrast, NMII heavy chains are mostly positioned along the longitudinal axonal axis, being able to crosslink adjacent rings. NMII filaments can play contractile or scaffolding roles determined by their position relative to actin rings and activation state. We also show that MPS destabilization through NMII inactivation affects axonal electrophysiology, increasing action potential conduction velocity. In summary, our findings open new perspectives on axon diameter regulation, with important implications in neuronal biology.
Collapse
Affiliation(s)
- Ana Rita Costa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Sara C Sousa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Rita Pinto-Costa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - José C Mateus
- i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,Neuroengineering and Computational Neuroscience Group, INEB- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Cátia Df Lopes
- i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Neuroengineering and Computational Neuroscience Group, INEB- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Ana Catarina Costa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.,Neuroengineering and Computational Neuroscience Group, INEB- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - David Rosa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Diana Machado
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Luis Pajuelo
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Xuewei Wang
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, United States
| | - Feng-Quan Zhou
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine; The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, United States
| | - António J Pereira
- i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Chromosome Instability and Dynamics Group, Porto, Portugal
| | - Paula Sampaio
- i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Advanced Light Microscopy, IBMC- Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | | | | | - Marko Lampe
- Advanced Light Microscopy Facility, EMBL, Heidelberg, Germany
| | - Paulo Aguiar
- i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,Neuroengineering and Computational Neuroscience Group, INEB- Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Monica M Sousa
- Nerve Regeneration Group, Porto, Portugal.,i3S- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| |
Collapse
|
23
|
Miranda C, Bettencourt S, Pozdniakova T, Pereira J, Sampaio P, Franco-Duarte R, Pais C. Modified high-throughput Nile red fluorescence assay for the rapid screening of oleaginous yeasts using acetic acid as carbon source. BMC Microbiol 2020; 20:60. [PMID: 32169040 PMCID: PMC7071767 DOI: 10.1186/s12866-020-01742-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 03/03/2020] [Indexed: 11/24/2022] Open
Abstract
Background Over the last years oleaginous yeasts have been studied for several energetic, oleochemical, medical and pharmaceutical purposes. However, only a small number of yeasts are known and have been deeply exploited. The search for new isolates with high oleaginous capacity becomes imperative, as well as the use of alternative and ecological carbon sources for yeast growth. Results In the present study a high-throughput screening comprising 366 distinct yeast isolates was performed by applying an optimised protocol based on two approaches: (I) yeast cultivation on solid medium using acetic acid as carbon source, (II) neutral lipid estimation by fluorimetry using the lipophilic dye Nile red. Conclusions Results showed that, with the proposed methodology, the oleaginous potential of yeasts with broad taxonomic diversity and variety of growth characteristics was discriminated. Furthermore, this work clearly demonstrated the association of the oleaginous yeast character to the strain level, contrarily to the species-level linkage, as usually stated.
Collapse
Affiliation(s)
- Catarina Miranda
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Sara Bettencourt
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Tatiana Pozdniakova
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Joana Pereira
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| | - Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal. .,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal.
| | - Célia Pais
- CBMA (Centre of Molecular and Environmental Biology), Department of Biology, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.,Institute of Science and Innovation for Bio-Sustainability (IB-S), University of Minho, Braga, Portugal
| |
Collapse
|
24
|
Paiva JS, Jorge PAS, Ribeiro RSR, Balmaña M, Campos D, Mereiter S, Jin C, Karlsson NG, Sampaio P, Reis CA, Cunha JPS. iLoF: An intelligent Lab on Fiber Approach for Human Cancer Single-Cell Type Identification. Sci Rep 2020; 10:3171. [PMID: 32081911 PMCID: PMC7035380 DOI: 10.1038/s41598-020-59661-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 12/16/2019] [Indexed: 01/30/2023] Open
Abstract
With the advent of personalized medicine, there is a movement to develop "smaller" and "smarter" microdevices that are able to distinguish similar cancer subtypes. Tumor cells display major differences when compared to their natural counterparts, due to alterations in fundamental cellular processes such as glycosylation. Glycans are involved in tumor cell biology and they have been considered to be suitable cancer biomarkers. Thus, more selective cancer screening assays can be developed through the detection of specific altered glycans on the surface of circulating cancer cells. Currently, this is only possible through time-consuming assays. In this work, we propose the "intelligent" Lab on Fiber (iLoF) device, that has a high-resolution, and which is a fast and portable method for tumor single-cell type identification and isolation. We apply an Artificial Intelligence approach to the back-scattered signal arising from a trapped cell by a micro-lensed optical fiber. As a proof of concept, we show that iLoF is able to discriminate two human cancer cell models sharing the same genetic background but displaying a different surface glycosylation profile with an accuracy above 90% and a speed rate of 2.3 seconds. We envision the incorporation of the iLoF in an easy-to-operate microchip for cancer identification, which would allow further biological characterization of the captured circulating live cells.
Collapse
Affiliation(s)
- Joana S Paiva
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal
- Faculty of Engineering, University of Porto, Porto, Portugal
| | - Pedro A S Jorge
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal
| | - Rita S R Ribeiro
- INESC TEC - INESC Technology and Science, Porto, Portugal
- Faculty of Engineering, University of Porto, Porto, Portugal
- 4DCell, Paris, France
| | - Meritxell Balmaña
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter Campus, 1030, Vienna, Austria
| | - Diana Campos
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
| | - Stefan Mereiter
- Faculty of Engineering, University of Porto, Porto, Portugal
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna BioCenter Campus, 1030, Vienna, Austria
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Paula Sampaio
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Universidade do Porto, Porto, Portugal
| | - Celso A Reis
- i3s - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- IPATIMUP - Institute of Molecular Pathology and Immunology, University of Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Porto, Portugal
- Faculty of Medicine of the University of Porto, Porto, Portugal
| | - João P S Cunha
- INESC TEC - INESC Technology and Science, Porto, Portugal.
- Faculty of Engineering, University of Porto, Porto, Portugal.
| |
Collapse
|
25
|
Abstract
Candida albicans causes systemic life-threatening infections, particularly in immunocompromised individuals, such as patients in intensive care units, patients undergoing chemotherapy, and post-surgical and neutropenic patients. The proliferation of invading Candida cells is mainly limited by the action of the human innate immune system, in which phagocytic cells play a fundamental role. This function is, however, limited in neutropenic patients, who rely mainly on the protective immunity mediated by macrophages. Macrophages have been shown to release extracellular DNA fibers, known as macrophage extracellular traps (METs), which can entrap and kill various microbes by a process called ETosis. In this study, we observed that, upon contact with C. albicans, macrophages became active in phagocyting and engulfing yeast cells. ETosis was induced in 6% of macrophages within the first 30 min of contact, and this percentage increased with the multiplicity of infection until a plateau was reached. After 2.5 h incubation, the presence of extracellular macrophage DNA was observed in approximately half of the cells. This study suggests that the formation of METs occurs before pyroptosis (first 6–8 h) and macrophage cell death (up to 24 h), and thus, METs could be included in models describing C. albicans–macrophage interactions. We also observed that macrophage ETosis and phagocytosis can occur simultaneously and that, in the first hours of infection, both processes are similarly important in controlling the proliferation of yeast cells, this being critical in neutropenic patients. Finally, it can also be concluded that, since C. albicans can degrade DNA, the structural component of METs, yeast extracellular DNase activity can be considered as an important virulence factor.
Collapse
Affiliation(s)
- Ana Loureiro
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Célia Pais
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| |
Collapse
|
26
|
Pereira SS, Pereira R, Santos AP, Costa MM, Morais T, Sampaio P, Machado B, Afonso LP, Henrique R, Monteiro MP. Higher IL-6 peri-tumoural expression is associated with gastro-intestinal neuroendocrine tumour progression. Pathology 2019; 51:593-599. [DOI: 10.1016/j.pathol.2019.07.001] [Citation(s) in RCA: 6] [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: 04/26/2019] [Revised: 07/05/2019] [Accepted: 07/11/2019] [Indexed: 12/28/2022]
|
27
|
Paiva JS, Jorge PAS, Ribeiro RSR, Sampaio P, Rosa CC, Cunha JPS. Optical fiber-based sensing method for nanoparticle detection through supervised back-scattering analysis: a potential contributor for biomedicine. Int J Nanomedicine 2019; 14:2349-2369. [PMID: 31040661 PMCID: PMC6452810 DOI: 10.2147/ijn.s174358] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background In view of the growing importance of nanotechnologies, the detection/identification of nanoparticles type has been considered of utmost importance. Although the characterization of synthetic/organic nanoparticles is currently considered a priority (eg, drug delivery devices, nanotextiles, theranostic nanoparticles), there are many examples of “naturally” generated nanostructures – for example, extracellular vesicles (EVs), lipoproteins, and virus – that provide useful information about human physiology or clinical conditions. For example, the detection of tumor-related exosomes, a specific type of EVs, in circulating fluids has been contributing to the diagnosis of cancer in an early stage. However, scientists have struggled to find a simple, fast, and low-cost method to accurately detect/identify these nanoparticles, since the majority of them have diameters between 100 and 150 nm, thus being far below the diffraction limit. Methods This study investigated if, by projecting the information provided from short-term portions of the back-scattered laser light signal collected by a polymeric lensed optical fiber tip dipped into a solution of synthetic nanoparticles into a lower features dimensional space, a discriminant function is able to correctly detect the presence of 100 nm synthetic nanoparticles in distilled water, in different concentration values. Results and discussion This technique ensured an optimal performance (100% accuracy) in detecting nanoparticles for a concentration above or equal to 3.89 µg/mL (8.74E+10 particles/mL), and a performance of 90% for concentrations below this value and higher than 1.22E−03 µg/mL (2.74E+07 particles/mL), values that are compatible with human plasmatic levels of tumor-derived and other types of EVs, as well as lipoproteins currently used as potential biomarkers of cardiovascular diseases. Conclusion The proposed technique is able to detect synthetic nanoparticles whose dimensions are similar to EVs and other “clinically” relevant nanostructures, and in concentrations equivalent to the majority of cell-derived, platelet-derived EVs and lipoproteins physiological levels. This study can, therefore, provide valuable insights towards the future development of a device for EVs and other biological nanoparticles detection with innovative characteristics.
Collapse
Affiliation(s)
- Joana S Paiva
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal, .,Faculty of Engineering, University of Porto, Porto, Portugal,
| | - Pedro A S Jorge
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal,
| | | | - Paula Sampaio
- Institute for Molecular and Cell Biology, i3S - Institute for Innovation and Research in Health, Porto, Portugal
| | - Carla C Rosa
- INESC Technology and Science, Porto, Portugal, .,Physics and Astronomy Department, Faculty of Sciences, University of Porto, Porto, Portugal,
| | - João P S Cunha
- INESC Technology and Science, Porto, Portugal, .,Faculty of Engineering, University of Porto, Porto, Portugal,
| |
Collapse
|
28
|
Pereira A, Sousa M, Almeida AC, Ferreira LT, Costa AR, Novais-Cruz M, Ferrás C, Sousa MM, Sampaio P, Belsley M, Maiato H. Coherent-hybrid STED: high contrast sub-diffraction imaging using a bi-vortex depletion beam. Opt Express 2019; 27:8092-8111. [PMID: 30894786 PMCID: PMC6420153 DOI: 10.1364/oe.27.008092] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/04/2019] [Indexed: 05/21/2023]
Abstract
Stimulated emission depletion (STED) fluorescence microscopy squeezes an excited spot well below the wavelength scale using a doughnut-shaped depletion beam. To generate a doughnut, a scale-free vortex phase modulation (2D-STED) is often used because it provides maximal transverse confinement and radial-aberration immunity (RAI) to the central dip. However, RAI also means blindness to a defocus term, making the axial origin of fluorescence photons uncertain within the wavelength scale provided by the confocal detection pinhole. Here, to reduce the uncertainty, we perturb the 2D-STED phase mask so as to change the sign of the axial concavity near focus, creating a dilated dip. By providing laser depletion power, the dip can be compressed back in three dimensions to retrieve lateral resolution, now at a significantly higher contrast. We test this coherent-hybrid STED (CH-STED) mode in x-y imaging of complex biological structures, such as the dividing cell. The proposed strategy creates an orthogonal direction in the STED parametric space that uniquely allows independent tuning of resolution and contrast using a single depletion beam in a conventional (circular polarization-based) STED setup.
Collapse
Affiliation(s)
- António Pereira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Mafalda Sousa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Ana C. Almeida
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Luísa T. Ferreira
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Ana Rita Costa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Marco Novais-Cruz
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Cristina Ferrás
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Mónica Mendes Sousa
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Paula Sampaio
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Michael Belsley
- Center of Physics, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Helder Maiato
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- IBMC - Instituto de Biologia Molecular e Celular, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Cell Division Group, Experimental Biology Unit, Department of Biomedicine, Faculdade de Medicina, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| |
Collapse
|
29
|
Ferreira BH, Ramírez-Prado JH, Neves GWP, Torrado E, Sampaio P, Felipe MSS, Vasconcelos AT, Goldman GH, Carvalho A, Cunha C, Lopes-Bezerra LM, Rodrigues F. Ploidy Determination in the Pathogenic Fungus Sporothrix spp. Front Microbiol 2019; 10:284. [PMID: 30858833 PMCID: PMC6397882 DOI: 10.3389/fmicb.2019.00284] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 02/04/2019] [Indexed: 11/16/2022] Open
Abstract
The pathogenic clade of the Sporothrix genus comprises the etiological agents of sporotrichosis, a worldwide emergent disease. Despite the growing understanding of their successful pathogen traits, there is little information on genome sizes and ploidy within the genus. Therefore, in this work, we evaluated the ploidy of four species of the Sporothrix genus, specifically Sporothrix brasiliensis, Sporothrix schenckii, Sporothrix globosa, and Sporothrix pallida. Through cell cycle analysis of the yeast-phase cells, we showed that the DNA content of G0/G1 cells was similar to the genome size determined by whole genome sequencing. Moreover, ploidy of S. schenckii, S. brasiliensis, and S. pallida that was determined by allele composition using next-generation sequencing (NGS) data is consistent with monomorphic positions at each allele. These data show that the analyzed strains of Sporothrix are haploid, or at least aneuploid, thereby laying the foundation for the development of a molecular toolbox for Sporothrix spp.
Collapse
Affiliation(s)
- Beatriz H. Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Braga, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, University of Minho, Braga, Portugal
| | | | - Gabriela W. P. Neves
- Laboratory of Cellular Mycology and Proteomics, Biology Institute, University of Rio de Janeiro State, Rio de Janeiro, Brazil
| | - Egídio Torrado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Braga, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, University of Minho, Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Maria Sueli S. Felipe
- Genomic Science and Biotechnology, Catholic University of Brasília, Brasília, Brazil
- Department of Cellular Biology, University of Brasília, Brasília, Brazil
| | - Ana Tereza Vasconcelos
- Laboratório de Bioinformática, Laboratório Nacional de Computação Científica, Petrópolis, Brazil
| | - Gustavo H. Goldman
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
| | - Agostinho Carvalho
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Braga, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, University of Minho, Braga, Portugal
| | - Cristina Cunha
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Braga, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, University of Minho, Braga, Portugal
| | - Leila M. Lopes-Bezerra
- Laboratory of Cellular Mycology and Proteomics, Biology Institute, University of Rio de Janeiro State, Rio de Janeiro, Brazil
- Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brazil
| | - Fernando Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Medicine, Braga, Portugal
- ICVS/3B’s - PT Government Associate Laboratory, University of Minho, Braga, Portugal
| |
Collapse
|
30
|
Carvalho-Pereira J, Oliveira MME, Costa-Barbosa A, Vaz C, Velegraki A, Zancopé-Oliveira RM, Pais C, Sampaio P. High variability within Candida albicans transcription factor RLM1: Isolates from vulvovaginal infections show a clear bias toward high molecular weight alleles. Med Mycol 2018; 56:649-651. [PMID: 29420774 DOI: 10.1093/mmy/myx079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Accepted: 08/18/2017] [Indexed: 11/12/2022] Open
Abstract
Previous studies have correlated the severity of recurrent vulvovaginal Candida infections (VVC) and balanitis in patients from China with the presence of some dominant genotypes at the ORF RLM1. Here we tested VVC vs non-VVC isolates from Portugal, Brazil and Greece and, although the same genotypes were identified in VVC isolates, they were present in only five out of 150 strains. However, this analysis showed that VVC isolates presented a higher percentage of genotypes with similar high molecular weight alleles, in comparison with strains isolated from other biological sources.
Collapse
Affiliation(s)
- Joana Carvalho-Pereira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Manoel Marques Evangelista Oliveira
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Augusto Costa-Barbosa
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Catarina Vaz
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Aristea Velegraki
- Mycology Research Laboratory, Dept. of Microbiology, Medical School, National and Kapodistrian University of Athens
| | - Rosely Maria Zancopé-Oliveira
- Laboratório de Micologia, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Célia Pais
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), Department of Biology, University of Minho, Braga, Portugal
| |
Collapse
|
31
|
Pedrotti I, Sampaio P, Lima G, Agatti LA, Martins Montalli VÂ, De Freitas NS, De Camargo Moraes P. Cerclage as Alternative Treatment for Buccal Diseases in Patients with Systemic Health Problems. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
32
|
Garófalo IS, Sampaio P, Thomaz LA, Martins Montalli VA, Furuse C, Santos FP, De Camargo Moraes P. Plasmablastic Lymphoma: Presentation of Patients with HIV and Hcv Infection with Fatal Evolution. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
33
|
De Sa Valente IR, Sampaio P, Lima G, Tomaz LA, Passador-Santos F, Montalli VA, De Camargo Moraes P. Arteriovenous Malformation with Thrombosis Formation in the Jugal Mucosa: a Clinical Case. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Pedrotti I, Lima G, Agatti LA, Sampaio P, Thomaz LA, Martins Montalli VÂ, De Camargo Moraes P. Large Nasopalatine Cyst. Oral Surg Oral Med Oral Pathol Oral Radiol 2018. [DOI: 10.1016/j.oooo.2018.02.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
35
|
Oliveira-Pacheco J, Alves R, Costa-Barbosa A, Cerqueira-Rodrigues B, Pereira-Silva P, Paiva S, Silva S, Henriques M, Pais C, Sampaio P. The Role of Candida albicans Transcription Factor RLM1 in Response to Carbon Adaptation. Front Microbiol 2018; 9:1127. [PMID: 29896184 PMCID: PMC5986929 DOI: 10.3389/fmicb.2018.01127] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 05/14/2018] [Indexed: 11/13/2022] Open
Abstract
Candida albicans is the main causative agent of candidiasis and one of the most frequent causes of nosocomial infections worldwide. In order to establish an infection, this pathogen supports effective stress responses to counter host defenses and adapts to changes in the availability of important nutrients, such as alternative carbon sources. These stress responses have clear implications on the composition and structure of Candida cell wall. Therefore, we studied the impact of lactate, a physiologically relevant carbon source, on the activity of C. albicans RLM1 transcriptional factor. RLM1 is involved in the cell wall integrity pathway and plays an important role in regulating the flow of carbohydrates into cell wall biosynthesis pathways. The role of C. albicans RLM1 in response to lactate adaptation was assessed in respect to several virulence factors, such as the ability to grow under cell wall damaging agents, filament, adhere or form biofilm, as well as to immune recognition. The data showed that growth of C. albicans cells in the presence of lactate induces the secretion of tartaric acid, which has the potential to modulate the TCA cycle on both the yeast and the host cells. In addition, we found that adaptation of C. albicans cells to lactate reduces their internalization by immune cells and consequent % of killing, which could be correlated with a lower exposure of the cell wall β-glucans. In addition, absence of RLM1 has a minor impact on internalization, compared with the wild-type and complemented strains, but it reduces the higher efficiency of lactate grown cells at damaging phagocytic cells and induces a high amount of IL-10, rendering these cells more tolerable to the immune system. The data suggests that RLM1 mediates cell wall remodeling during carbon adaptation, impacting their interaction with immune cells.
Collapse
Affiliation(s)
- João Oliveira-Pacheco
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal.,UCD School of Biomolecular and Biomedical Science, University College Dublin, Dublin, Ireland
| | - Rosana Alves
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal
| | - Augusto Costa-Barbosa
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal
| | | | | | - Sandra Paiva
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal
| | - Sónia Silva
- CEB, School of Engineering, University of Minho, Braga, Portugal
| | | | - Célia Pais
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal
| | - Paula Sampaio
- Department of Biology, CBMA, School of Sciences, University of Minho, Braga, Portugal
| |
Collapse
|
36
|
Franco-Duarte R, Bessa D, Gonçalves F, Martins R, Silva-Ferreira AC, Schuller D, Sampaio P, Pais C. Genomic and transcriptomic analysis of Saccharomyces cerevisiae isolates with focus in succinic acid production. FEMS Yeast Res 2018; 17:4061002. [PMID: 28910984 DOI: 10.1093/femsyr/fox057] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/28/2017] [Indexed: 11/15/2022] Open
Abstract
Succinic acid is a platform chemical that plays an important role as precursor for the synthesis of many valuable bio-based chemicals. Its microbial production from renewable resources has seen great developments, specially exploring the use of yeasts to overcome the limitations of using bacteria. The objective of the present work was to screen for succinate-producing isolates, using a yeast collection with different origins and characteristics. Four strains were chosen, two as promising succinic acid producers, in comparison with two low producers. Genome of these isolates was analysed, and differences were found mainly in genes SDH1, SDH3, MDH1 and the transcription factor HAP4, regarding the number of single nucleotide polymorphisms and the gene copy-number profile. Real-time PCR was used to study gene expression of 10 selected genes involved in the metabolic pathway of succinic acid production. Results show that for the non-producing strain, higher expression of genes SDH1, SDH2, ADH1, ADH3, IDH1 and HAP4 was detected, together with lower expression of ADR1 transcription factor, in comparison with the best producer strain. This is the first study showing the capacity of natural yeast isolates to produce high amounts of succinic acid, together with the understanding of the key factors associated, giving clues for strain improvement.
Collapse
Affiliation(s)
- Ricardo Franco-Duarte
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| | - Daniela Bessa
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| | - Filipa Gonçalves
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| | - Rosa Martins
- Escola Superior de Biotecnologia, Universidade Católica Portuguesa, 4200-072 Porto, Portugal
| | | | - Dorit Schuller
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| | - Paula Sampaio
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| | - Célia Pais
- CBMA (Centre of Molecular and Environmental Biology) / Department of Biology / University of Minho, 4710-057 Braga, Portugal
| |
Collapse
|
37
|
Azevedo MM, Domingues HS, Cordelières FP, Sampaio P, Seixas AI, Relvas JB. Jmy regulates oligodendrocyte differentiation via modulation of actin cytoskeleton dynamics. Glia 2018; 66:1826-1844. [DOI: 10.1002/glia.23342] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 03/26/2018] [Accepted: 04/05/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Maria M. Azevedo
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto; Porto Portugal
- IBMC - Instituto de Biologia Molecular e Celular; Porto Portugal
| | - Helena S. Domingues
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto; Porto Portugal
- IBMC - Instituto de Biologia Molecular e Celular; Porto Portugal
| | - Fabrice P. Cordelières
- Bordeaux Imaging Centre, UMS 3420 CNRS, CNRS-INSERM, University of Bordeaux; Bordeaux France
| | - Paula Sampaio
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto; Porto Portugal
- IBMC - Instituto de Biologia Molecular e Celular; Porto Portugal
| | - Ana I. Seixas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto; Porto Portugal
- IBMC - Instituto de Biologia Molecular e Celular; Porto Portugal
| | - João B. Relvas
- i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto; Porto Portugal
- IBMC - Instituto de Biologia Molecular e Celular; Porto Portugal
- The Discoveries Centre for Regeneration and Precision Medicine, Porto campus; Porto Portugal
| |
Collapse
|
38
|
Sampaio P, Soares A, Castanho A, Almeida AS, Oliveira J, Brites C. Dataset of Near-infrared spectroscopy measurement for amylose determination using PLS algorithms. Data Brief 2017; 15:389-396. [PMID: 29214199 PMCID: PMC5712058 DOI: 10.1016/j.dib.2017.09.077] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 09/19/2017] [Accepted: 09/28/2017] [Indexed: 11/30/2022] Open
Abstract
In the dataset presented in this article, 168 rice samples comprising sixteen rice varieties (including Indica and Japonica sub species) from a Portuguese Rice Breeding Program obtained from three different sites along four seasons, and 11 standard rice varieties from International Rice Research Institute were characterised. The amylose concentration was evaluated based on iodine method, and the near infrared (NIR) spectra were determined. To assess the advantage of Near infrared spectroscopy, different rice varieties and specific algorithms based on Matlab software such as Standard Normal Variate (SNV), Multiple Scatter Calibration (MSC) and Savitzky-Golay filter were used for NIR spectra pre-processing.
Collapse
Affiliation(s)
- P Sampaio
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal.,Faculty of Engineering, Lusophone University of Humanities and Technology, Campo Grande, 376, 1749-019 Lisbon, Portugal
| | - A Soares
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - A Castanho
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - A S Almeida
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - J Oliveira
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| | - C Brites
- Instituto Nacional de Investigação Agrária e Veterinária (INIAV), Av. da República, Quinta do Marquês, 2780-157 Oeiras, Portugal
| |
Collapse
|
39
|
Pintado P, Sampaio P, Tavares B, Montenegro-Johnson TD, Smith DJ, Lopes SS. Dynamics of cilia length in left-right development. R Soc Open Sci 2017; 4:161102. [PMID: 28405397 PMCID: PMC5383854 DOI: 10.1098/rsos.161102] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 02/06/2017] [Indexed: 05/28/2023]
Abstract
Reduction in the length of motile cilia in the zebrafish left-right organizer (LRO), also known as Kupffer's vesicle, has a large impact on left-right development. Here we demonstrate through genetic overexpression in zebrafish embryos and mathematical modelling that the impact of increased motile cilia length in embryonic LRO fluid flow is milder than that of short cilia. Through Arl13b overexpression, which increases cilia length without impacting cilia beat frequency, we show that the increase in cilium length is associated with a decrease in beat amplitude, resulting in similar flow strengths for Arl13b overexpression and wild-type (WT) embryos, which were not predicted by current theory. Longer cilia exhibit pronounced helical beat patterns and, consequently, lower beat amplitudes relative to WT, a result of an elastohydrodynamic shape transition. For long helical cilia, fluid dynamics modelling predicts a mild (approx. 12%) reduction in the torque exerted on the fluid relative to the WT, resulting in a proportional reduction in flow generation. This mild reduction is corroborated by experiments, providing a mechanism for the mild impact on organ situs.
Collapse
Affiliation(s)
- P. Pintado
- NOVA Medical School Faculdade de Ciências Médicas, Chronic Diseases Research Centre, CEDOC, Universidade Nova de Lisboa, Campo Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
| | - P. Sampaio
- NOVA Medical School Faculdade de Ciências Médicas, Chronic Diseases Research Centre, CEDOC, Universidade Nova de Lisboa, Campo Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
| | - B. Tavares
- NOVA Medical School Faculdade de Ciências Médicas, Chronic Diseases Research Centre, CEDOC, Universidade Nova de Lisboa, Campo Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
| | | | - D. J. Smith
- School of Mathematics, University of Birmingham, Birmingham, UK
- Institute for Metabolism and Systems Research, University of Birmingham, Birmingham, UK
- Centre for Human Reproductive Science, Birmingham Women's NHS Foundation Trust, Birmingham, UK
| | - S. S. Lopes
- NOVA Medical School Faculdade de Ciências Médicas, Chronic Diseases Research Centre, CEDOC, Universidade Nova de Lisboa, Campo Mártires da Pátria, 130, 1169-056 Lisboa, Portugal
| |
Collapse
|
40
|
Lopes CDF, Gomes CP, Neto E, Sampaio P, Aguiar P, Pêgo AP. Microfluidic-based platform to mimic the in vivo peripheral administration of neurotropic nanoparticles. Nanomedicine (Lond) 2016; 11:3205-3221. [DOI: 10.2217/nnm-2016-0247] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Aim: Propose a nanoparticle for neuron-targeted retrograde gene delivery and describe a microfluidic-based culture system to provide insight into vector performance and safety. Methods: Using compartmentalized neuron cultures we dissected nanoparticle bioactivity upon delivery taking advantage of (quantitative) bioimaging tools. Results: Targeted and nontargeted nanoparticles were internalized at axon terminals and retrogradely transported to cell bodies at similar average velocities but the former have shown an axonal flux 2.7-times superior to nontargeted nanoparticles, suggesting an improved cargo-transportation efficiency. The peripheral administration of nanoparticles to axon terminals is nontoxic as compared with their direct administration to the cell body or whole neuron. Conclusion: A neuron-targeted nanoparticle system was put forward. Microfluidic-based neuron cultures are proposed as a powerful tool to investigate nanoparticle bio-performance.
Collapse
Affiliation(s)
- Cátia DF Lopes
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Alameda Prof Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Carla P Gomes
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Faculdade de Engenharia da Universidade do Porto, Rua Dr Roberto Frias, s/n 4200-465 Porto, Portugal
| | - Estrela Neto
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Alameda Prof Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Paula Sampaio
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Instituto de Biologia Molecular e Celular, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Paulo Aguiar
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Ana P Pêgo
- INEB – Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- i3S – Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Faculdade de Engenharia da Universidade do Porto, Rua Dr Roberto Frias, s/n 4200-465 Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| |
Collapse
|
41
|
Carneiro C, Correia A, Lima T, Vilanova M, Pais C, Gomes AC, Real Oliveira MEC, Sampaio P. Protective effect of antigen delivery using monoolein-based liposomes in experimental hematogenously disseminated candidiasis. Acta Biomater 2016; 39:133-145. [PMID: 27150234 DOI: 10.1016/j.actbio.2016.05.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 04/22/2016] [Accepted: 05/01/2016] [Indexed: 01/08/2023]
Abstract
UNLABELLED We evaluated the potential of a liposomal antigen delivery system (ADS) containing Candida albicans cell wall surface proteins (CWSP) in mediating protection against systemic candidiasis. Treatment of bone-marrow-derived dendritic cells with CWSP-loaded dioctadecyldimethylammonium bromide:monoolein (DODAB:MO) liposomes enhanced and prolonged their activation comparatively to free antigen, indicating that liposome-entrapped CWSP were released more sustainable. Therefore, we immunized mice with CWSP either in a free form or loaded into two different DODAB:MO liposome formulations, respectively designated as ADS1 and ADS2, prior to intravenous C. albicans infection. Immunization with ADS1, but not with ADS2, conferred significant protection to infected mice, comparatively to immunization with CWSP or empty liposomes as control. ADS1-immunized mice presented significantly higher serum levels of C. albicans-specific antibodies that enhanced phagocytosis of this fungus. In these mice, a mixed cytokine production profile was observed encompassing IFN-γ, IL-4, IL-17A and IL-10. Nevertheless, only production of IL-4, IL-17 and IL-10 was higher than in controls. In this study we demonstrated that DODAB:MO liposomes enhance the immunogenicity of C. albicans antigens and host protection in a murine model of systemic candidiasis. Therefore, this liposomal adjuvant could be a promising candidate to assess in vaccination against this pathogenic fungus. STATEMENT OF SIGNIFICANCE This work describes the immunomodulation capacity of the previously validated antigen delivery system (ADS) composed by dioctadecyldimethylammonium bromide (DODAB) and monoolein (MO) lipids incorporating the cell wall surface proteins (CWSP) from C. albicans. Here, we not only present the ability of this system in facilitating antigen uptake by DCs in vitro, but also that this system induces higher levels of pro-inflammatory cytokines and opsonizing specific IgG antibodies in serum of mice immunized subcutaneously. We show that the ADS are efficient nanocarrier and modulate the immune response against intravenous C. albicans infection favoring mouse protection. In sum, we show that the incorporation of C. albicans antigens in DODAB:MO nanocarries are a promising vaccine strategy against C. albicans fungal infection.
Collapse
|
42
|
Sapkota K, Franco S, Sampaio P, Lira M. Effect of three months of soft contact lens wear on conjunctival cytology. Clin Exp Optom 2016; 99:336-41. [PMID: 27146845 DOI: 10.1111/cxo.12373] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 06/30/2015] [Accepted: 07/24/2015] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate the effect of three months of soft contact lens wear on conjunctival goblet cell density and epithelial cell morphology. METHODS This was a longitudinal clinical trial. Conjunctival impression cytology was performed on the superior palpebral conjunctiva in fifty-four eyes of twenty-seven neophyte contact lens wearers before and after three months of contact lens wear. Goblet cell density was determined by optical microscopy and epithelial cell morphology was classified according to the Tseng classification. Changes in goblet cell density as well as epithelial cell grading were determined. The effects of lens material and wearing modality on cytological changes were also investigated. RESULTS Goblet cell density reduced significantly by 85 ± 151 cells/mm(2) (p < 0.001) after three months of contact lens wear. Reduction in goblet cell density was associated with lens materials; it was higher in conventional hydrogel lenses in comparison to silicone-hydrogel lenses (p = 0.008). The highest reduction in goblet cell density was found with Nelfilcon A lens wear (p = 0.002) and the lowest with Comfilcon A lens wear (p = 0.414). There was no statistically significant difference in grading of epithelial metaplasia before and after three months of contact lens wear (p = 0.075). Age was not correlated with the reduction in goblet cell density (r = -0.196, p = 0.160) but it was associated with the change in epithelial cell morphology (p = 0.036). CONCLUSION Three months of soft contact lens wear statistically significantly reduced goblet cell density; however, no significant changes were found in the grading of epithelial metaplasia. Contact lenses with lower oxygen permeability, higher Young modulus and higher thickness highly affected the conjunctival cytology.
Collapse
Affiliation(s)
- Kishor Sapkota
- Centre of Physics, University of Minho, Braga, Portugal. .,Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal.
| | - Sandra Franco
- Centre of Physics, University of Minho, Braga, Portugal
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology (CBMA), University of Minho, Braga, Portugal
| | - Madalena Lira
- Centre of Physics, University of Minho, Braga, Portugal
| |
Collapse
|
43
|
Leite SC, Sampaio P, Sousa VF, Nogueira-Rodrigues J, Pinto-Costa R, Peters LL, Brites P, Sousa MM. The Actin-Binding Protein α-Adducin Is Required for Maintaining Axon Diameter. Cell Rep 2016; 15:490-498. [PMID: 27068466 DOI: 10.1016/j.celrep.2016.03.047] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [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: 10/13/2015] [Revised: 02/24/2016] [Accepted: 03/12/2016] [Indexed: 12/12/2022] Open
Abstract
The actin-binding protein adducin was recently identified as a component of the neuronal subcortical cytoskeleton. Here, we analyzed mice lacking adducin to uncover the function of this protein in actin rings. α-adducin knockout mice presented progressive axon enlargement in the spinal cord and optic and sciatic nerves, followed by axon degeneration and loss. Using stimulated emission depletion super-resolution microscopy, we show that a periodic subcortical actin cytoskeleton is assembled in every neuron type inspected including retinal ganglion cells and dorsal root ganglia neurons. In neurons devoid of adducin, the actin ring diameter increased, although the inter-ring periodicity was maintained. In vitro, the actin ring diameter adjusted as axons grew, suggesting the lattice is dynamic. Our data support a model in which adducin activity is not essential for actin ring assembly and periodicity but is necessary to control the diameter of both actin rings and axons and actin filament growth within rings.
Collapse
Affiliation(s)
- Sérgio Carvalho Leite
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; ICBAS, Universidade do Porto, 4050-313 Porto, Portugal
| | - Paula Sampaio
- Advanced Light Microscopy Unit, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Vera Filipe Sousa
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal; ICBAS, Universidade do Porto, 4050-313 Porto, Portugal
| | - Joana Nogueira-Rodrigues
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Rita Pinto-Costa
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | | | - Pedro Brites
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Mónica Mendes Sousa
- Nerve Regeneration Group, IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4150-180 Porto, Portugal; Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal.
| |
Collapse
|
44
|
Chillemi V, Lo Passo C, van Diepeningen AD, Rharmitt S, Delfino D, Cascio A, Nnadi NE, Cilo BD, Sampaio P, Tietz HJ, Pemán J, Criseo G, Romeo O, Scordino F. Multilocus microsatellite analysis of European and African Candida glabrata isolates. Eur J Clin Microbiol Infect Dis 2016; 35:885-92. [DOI: 10.1007/s10096-016-2610-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 02/15/2016] [Indexed: 01/12/2023]
|
45
|
Moreira HT, Silva IM, Sousa M, Sampaio P, Silva Cunha JP. Neurotransmitter vesicle movement dynamics in living neurons. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2015:6265-8. [PMID: 26737724 DOI: 10.1109/embc.2015.7319824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The communication between two neurons is established by endogenous chemical particles aggregated in vesicles that move along the axons. It is known that an abnormal transport of these vesicles is correlated with neurodegenerative diseases. The quantification of the dynamics of vesicles movement can therefore be a window to study early detection of such diseases. Nevertheless, most of the studies in the literature rely on manual tracking techniques. In this paper we present a novel methodology for quantifying neurotransmitter vesicle dynamics by using a combination of image tracking and classification algorithms. We use confocal microscopy videos of living neurons to detect and classify vesicles using support vector machine (SVM), while motion is extracted via global nearest neighbor (GNN) tracking approach. Results of the classification algorithm are presented and compared to a ground truth dataset defined by experts. Sensitivity of 90% and specificity of 97% were obtained at a much lower computational cost than an established method from the literature (0.24s/frame vs. 125s/frame). These preliminary results suggest the great potential of the method and tool we have been developing for single particle movement dynamics measure in living cells.
Collapse
|
46
|
Jacinto R, Sampaio P, Roxo-Rosa M, Lopes S. Pkd2 affects the architecture of zebrafish left-right organizer. Cilia 2015. [PMCID: PMC4519166 DOI: 10.1186/2046-2530-4-s1-p84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
47
|
Morais DS, Fernandes S, Gomes PS, Fernandes MH, Sampaio P, Ferraz MP, Santos JD, Lopes MA, Sooraj Hussain N. Novel cerium doped glass-reinforced hydroxyapatite with antibacterial and osteoconductive properties for bone tissue regeneration. Biomed Mater 2015; 10:055008. [DOI: 10.1088/1748-6041/10/5/055008] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
48
|
Mota S, Alves R, Carneiro C, Silva S, Brown AJ, Istel F, Kuchler K, Sampaio P, Casal M, Henriques M, Paiva S. Candida glabrata susceptibility to antifungals and phagocytosis is modulated by acetate. Front Microbiol 2015; 6:919. [PMID: 26388859 PMCID: PMC4560035 DOI: 10.3389/fmicb.2015.00919] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 08/21/2015] [Indexed: 11/13/2022] Open
Abstract
Candida glabrata is considered a major opportunistic fungal pathogen of humans. The capacity of this yeast species to cause infections is dependent on the ability to grow within the human host environment and to assimilate the carbon sources available. Previous studies have suggested that C. albicans can encounter glucose-poor microenvironments during infection and that the ability to use alternative non-fermentable carbon sources, such as carboxylic acids, contributes to the virulence of this fungus. Transcriptional studies on C. glabrata cells identified a similar response, upon nutrient deprivation. In this work, we aimed at analyzing biofilm formation, antifungal drug resistance, and phagocytosis of C. glabrata cells grown in the presence of acetic acid as an alternative carbon source. C. glabrata planktonic cells grown in media containing acetic acid were more susceptible to fluconazole and were better phagocytosed and killed by macrophages than when compared to media lacking acetic acid. Growth in acetic acid also affected the ability of C. glabrata to form biofilms. The genes ADY2a, ADY2b, FPS1, FPS2, and ATO3, encoding putative carboxylate transporters, were upregulated in C. glabrata planktonic and biofilm cells in the presence of acetic acid. Phagocytosis assays with fps1 and ady2a mutant strains suggested a potential role of FPS1 and ADY2a in the phagocytosis process. These results highlight how acidic pH niches, associated with the presence of acetic acid, can impact in the treatment of C. glabrata infections, in particular in vaginal candidiasis.
Collapse
Affiliation(s)
- Sandra Mota
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal ; Centre of Health and Environmental Research, School of Allied Health Sciences, Polytechnic Institute of Porto Porto, Portugal
| | - Rosana Alves
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal
| | - Catarina Carneiro
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal
| | - Sónia Silva
- Centre for Biological Engineering, University of Minho Braga, Portugal
| | - Alistair J Brown
- Institute of Medical Sciences - School of Medical Sciences, University of Aberdeen Aberdeen, UK
| | - Fabian Istel
- Department of Medical Biochemistry, Max F. Perutz Laboratories, Medical University of Vienna Vienna, Austria
| | - Karl Kuchler
- Department of Medical Biochemistry, Max F. Perutz Laboratories, Medical University of Vienna Vienna, Austria
| | - Paula Sampaio
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal
| | - Margarida Casal
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal
| | - Mariana Henriques
- Centre for Biological Engineering, University of Minho Braga, Portugal
| | - Sandra Paiva
- Centre of Molecular and Environmental Biology, Department of Biology, University of Minho Braga, Portugal
| |
Collapse
|
49
|
Jacinto R, Sampaio P, Roxo-Rosa M, Lopes SS. Does stopping left-right nodal flow mirror impaired mechanosensation in the left-right organizer? Cilia 2015. [PMCID: PMC4519116 DOI: 10.1186/2046-2530-4-s1-p39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
50
|
Sampaio P, Tavares B, Jacinto R, Lopes S. Insights into the role of Notch signalling in cilia motility regulation. Cilia 2015. [PMCID: PMC4519119 DOI: 10.1186/2046-2530-4-s1-p81] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|