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Gonçalves E, Sciacovelli M, Costa ASH, Tran MGB, Johnson TI, Machado D, Frezza C, Saez-Rodriguez J. Corrigendum to "Post-translational regulation of metabolism in fumarate hydratase deficient cancer cells" [Metabol. Eng. 45 (2018) 149-157]. Metab Eng 2024; 82:297-298. [PMID: 38245482 DOI: 10.1016/j.ymben.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Affiliation(s)
- Emanuel Gonçalves
- European Molecular Biology Laboratory, European Bioinformatics Institute, EMBL-EBI, Wellcome Genome Campus, Cambridge, CB10 1SD, UK
| | - Marco Sciacovelli
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - Ana S H Costa
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - Maxine Gia Binh Tran
- UCL Division of Surgery and Interventional Science, Specialist Center for Kidney Cancer, Royal Free Hospital, Pond Street, London, NW3 2QG, UK
| | - Timothy Isaac Johnson
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK
| | - Daniel Machado
- European Molecular Biology Laboratory, EMBL, Heidelberg, Germany; Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Christian Frezza
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge, CB2 0XZ, UK.
| | - Julio Saez-Rodriguez
- RWTH Aachen University, Faculty of Medicine, Joint Research Center for Computational Biomedicine, Aachen, Germany
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2
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Machado D. A benchmark of optimization solvers for genome-scale metabolic modeling of organisms and communities. mSystems 2024; 9:e0083323. [PMID: 38251879 PMCID: PMC10878033 DOI: 10.1128/msystems.00833-23] [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: 08/08/2023] [Accepted: 12/11/2023] [Indexed: 01/23/2024] Open
Abstract
Genome-scale metabolic modeling is a powerful framework for predicting metabolic phenotypes of any organism with an annotated genome. For two decades, this framework has been used for the rational design of microbial cell factories. In the last decade, the range of applications has exploded, and new frontiers have emerged, including the study of the gut microbiome and its health implications and the role of microbial communities in global ecosystems. However, all the critical steps in this framework, from model construction to simulation, require the use of powerful linear optimization solvers, with the choice often relying on commercial solvers for their well-known computational efficiency. In this work, I benchmark a total of six solvers (two commercial and four open source) and measure their performance to solve linear and mixed-integer linear problems of increasing complexity. Although commercial solvers are still the fastest, at least two open-source solvers show comparable performance. These results show that genome-scale metabolic modeling does not need to be hindered by commercial licensing schemes and can become a truly open science framework for solving urgent societal challenges.IMPORTANCEModeling the metabolism of organisms and communities allows for computational exploration of their metabolic capabilities and testing their response to genetic and environmental perturbations. This holds the potential to address multiple societal issues related to human health and the environment. One of the current limitations is the use of commercial optimization solvers with restrictive licenses for academic and non-academic use. This work compares the performance of several commercial and open-source solvers to solve some of the most complex problems in the field. Benchmarking results show that, although commercial solvers are indeed faster, some of the open-source options can also efficiently tackle the hardest problems, showing great promise for the development of open science applications.
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Affiliation(s)
- Daniel Machado
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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3
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Melkonian C, Zorrilla F, Kjærbølling I, Blasche S, Machado D, Junge M, Sørensen KI, Andersen LT, Patil KR, Zeidan AA. Microbial interactions shape cheese flavour formation. Nat Commun 2023; 14:8348. [PMID: 38129392 PMCID: PMC10739706 DOI: 10.1038/s41467-023-41059-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 08/15/2023] [Indexed: 12/23/2023] Open
Abstract
Cheese fermentation and flavour formation are the result of complex biochemical reactions driven by the activity of multiple microorganisms. Here, we studied the roles of microbial interactions in flavour formation in a year-long Cheddar cheese making process, using a commercial starter culture containing Streptococcus thermophilus and Lactococcus strains. By using an experimental strategy whereby certain strains were left out from the starter culture, we show that S. thermophilus has a crucial role in boosting Lactococcus growth and shaping flavour compound profile. Controlled milk fermentations with systematic exclusion of single Lactococcus strains, combined with genomics, genome-scale metabolic modelling, and metatranscriptomics, indicated that S. thermophilus proteolytic activity relieves nitrogen limitation for Lactococcus and boosts de novo nucleotide biosynthesis. While S. thermophilus had large contribution to the flavour profile, Lactococcus cremoris also played a role by limiting diacetyl and acetoin formation, which otherwise results in an off-flavour when in excess. This off-flavour control could be attributed to the metabolic re-routing of citrate by L. cremoris from diacetyl and acetoin towards α-ketoglutarate. Further, closely related Lactococcus lactis strains exhibited different interaction patterns with S. thermophilus, highlighting the significance of strain specificity in cheese making. Our results highlight the crucial roles of competitive and cooperative microbial interactions in shaping cheese flavour profile.
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Affiliation(s)
- Chrats Melkonian
- Bioinformatics & Modeling, R&D Digital Innovation, Chr. Hansen A/S, 2970, Hørsholm, Denmark.
- Theoretical Biology and Bioinformatics, Science for Life, Utrecht University, Utrecht, the Netherlands.
- Bioinformatics Group, Wageningen University and Research, Wageningen, the Netherlands.
| | - Francisco Zorrilla
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK
| | - Inge Kjærbølling
- Bioinformatics & Modeling, R&D Digital Innovation, Chr. Hansen A/S, 2970, Hørsholm, Denmark
| | - Sonja Blasche
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Daniel Machado
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, 7491, Norway
| | - Mette Junge
- Strain Improvement, R&D Food Microbiology, Chr. Hansen A/S, 2970, Hørsholm, Denmark
| | - Kim Ib Sørensen
- Strain Improvement, R&D Food Microbiology, Chr. Hansen A/S, 2970, Hørsholm, Denmark
| | | | - Kiran R Patil
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117, Heidelberg, Germany
| | - Ahmad A Zeidan
- Bioinformatics & Modeling, R&D Digital Innovation, Chr. Hansen A/S, 2970, Hørsholm, Denmark.
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4
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Giffon TD, Desbois M, Yakkundi P, Calhoun S, Sekar K, Denson C, Kothambawala T, Pearson A, Pandey S, Pandya D, Rosete R, Machado D, Raichlen P, Ng D, Jain AR, Funke R, Humke E, Hinton PR, Wang B, Keyt BA, Kotturi MF, Sinclair AM. Abstract 5660: IGM-7354, an immunocytokine with IL-15 fused to an anti-PD-L1 IgM, induces NK and CD8+ T cell mediated cytotoxicity of PD-L1-positive tumor cells. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-5660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Immunostimulatory cytokines are a promising immunotherapy for the treatment of advanced malignancies, but generally have been associated with severe toxicities when administered systemically. The recent development of antibody-cytokine fusion proteins, or immunocytokines, aims to localize cytokine activity to the tumor microenvironment and thus improve their therapeutic index. We have developed IGM-7354, a high affinity, high avidity anti-PD-L1 pentameric IgM antibody with an IL-15Rα chain and IL-15 fused to the joining (J) chain. The IGM-7354 immunocytokine was designed to deliver IL-15-mediated stimulation of NK and CD8+ T cells to PD-L1-expressing tumors and antigen-presenting cells, to enhance anti-tumor immune responses. The multivalent binding of IGM-7354 to PD-L1 provided a stronger binding avidity for human PD-L1 than the monovalent binding of IL-15 to IL-15Rb as confirmed in kinetic binding assays. In vitro IGM-7354 induced the proliferation of a cytotoxic T cell line responsive to IL-15 stimulation and enhanced the proliferation of NK and CD8+ T cells from healthy donor human PBMCs. In cytotoxicity assays with human PBMC and PD-L1+ cancer cell lines, IGM-7354 enhanced cancer cell killing through NK and CD8+ T cell expansion and cytotoxic activity, evidenced by Ki67 and Granzyme B upregulation in these cell populations. Next, in vivo pharmacodynamic studies were performed in two humanized mouse models: non-tumor-bearing BRGSF-HIS mice engrafted with human CD34+ cells, and PD-L1+ MDA-MB-231 tumor-bearing MHC-/- NSG mice engrafted with human PBMCs. In the BRGSF model, IGM-7354 increased NK cell activation and Granzyme B expression as well as NK and CD8+ T cell proliferation. In the tumor-bearing mouse model, IGM-7354 dose-dependently increased NK and CD8+ T cell proliferation in blood and infiltration of lymphocytes into the tumor. This pharmacodynamic activity correlated with IGM-7354 anti-tumor activity in the MDA-MB-231 model. Lastly, IGM-7354 increased the proliferation of NK and CD8+ T cells in cynomolgus monkeys and particularly induced the expansion of effector memory CD8+ T cells in the periphery. In summary, IGM-7354 induces NK and CD8+ T cell proliferation in both in vitro and in vivo preclinical models, resulting in the killing of PD-L1+ tumor cells. The strong avidity of IGM-7354 for PD-L1 may enhance IL-15 delivery to tumors and antigen-presenting cells and thus provide a more favorable safety profile. A Phase 1 clinical trial is planned.
Citation Format: Thierry D. Giffon, Melanie Desbois, Poonam Yakkundi, Susan Calhoun, Keerthana Sekar, Carolyn Denson, Tasnim Kothambawala, Alexander Pearson, Sivani Pandey, Deepal Pandya, Rodnie Rosete, Daniel Machado, Pat Raichlen, Dean Ng, Abhinav R. Jain, Roel Funke, Eric Humke, Paul R. Hinton, Beatrice Wang, Bruce A. Keyt, Maya F. Kotturi, Angus M. Sinclair. IGM-7354, an immunocytokine with IL-15 fused to an anti-PD-L1 IgM, induces NK and CD8+ T cell mediated cytotoxicity of PD-L1-positive tumor cells. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 5660.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Dean Ng
- 1IGM Biosciences, Inc., Mountain View, CA
| | | | - Roel Funke
- 1IGM Biosciences, Inc., Mountain View, CA
| | - Eric Humke
- 1IGM Biosciences, Inc., Mountain View, CA
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5
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Machado D, Patil KR. Reply to: Erroneous predictions of auxotrophies by CarveMe. Nat Ecol Evol 2023; 7:196-197. [PMID: 36471121 DOI: 10.1038/s41559-022-01939-0] [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] [Received: 07/21/2022] [Accepted: 10/14/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Daniel Machado
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kiran R Patil
- MRC Toxicology Unit, University of Cambridge, Cambridge, UK.
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6
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van den Berg NI, Machado D, Santos S, Rocha I, Chacón J, Harcombe W, Mitri S, Patil KR. Ecological modelling approaches for predicting emergent properties in microbial communities. Nat Ecol Evol 2022; 6:855-865. [PMID: 35577982 PMCID: PMC7613029 DOI: 10.1038/s41559-022-01746-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/23/2022] [Indexed: 12/20/2022]
Abstract
Recent studies have brought forward the critical role of emergent properties in shaping microbial communities and the ecosystems of which they are a part. Emergent properties-patterns or functions that cannot be deduced linearly from the properties of the constituent parts-underlie important ecological characteristics such as resilience, niche expansion and spatial self-organization. While it is clear that emergent properties are a consequence of interactions within the community, their non-linear nature makes mathematical modelling imperative for establishing the quantitative link between community structure and function. As the need for conservation and rational modulation of microbial ecosystems is increasingly apparent, so is the consideration of the benefits and limitations of the approaches to model emergent properties. Here we review ecosystem modelling approaches from the viewpoint of emergent properties. We consider the scope, advantages and limitations of Lotka-Volterra, consumer-resource, trait-based, individual-based and genome-scale metabolic models. Future efforts in this research area would benefit from capitalizing on the complementarity between these approaches towards enabling rational modulation of complex microbial ecosystems.
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Affiliation(s)
| | - Daniel Machado
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, Norway
| | - Sophia Santos
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Isabel Rocha
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, Oeiras, Portugal
| | - Jeremy Chacón
- Ecology, Evolution and Behavior, University of Minnesota, Minneapolis, MN, USA
| | - William Harcombe
- Ecology, Evolution and Behavior, University of Minnesota, Minneapolis, MN, USA
| | - Sara Mitri
- Département de Microbiologie Fondamentale, University of Lausanne, Lausanne, Switzerland
| | - Kiran R Patil
- Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK.
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7
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Cerca J, Petersen B, Lazaro-Guevara JM, Rivera-Colón A, Birkeland S, Vizueta J, Li S, Li Q, Loureiro J, Kosawang C, Díaz PJ, Rivas-Torres G, Fernández-Mazuecos M, Vargas P, McCauley RA, Petersen G, Santos-Bay L, Wales N, Catchen JM, Machado D, Nowak MD, Suh A, Sinha NR, Nielsen LR, Seberg O, Gilbert MTP, Leebens-Mack JH, Rieseberg LH, Martin MD. The genomic basis of the plant island syndrome in Darwin's giant daisies. Nat Commun 2022; 13:3729. [PMID: 35764640 PMCID: PMC9240058 DOI: 10.1038/s41467-022-31280-w] [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: 12/06/2021] [Accepted: 06/09/2022] [Indexed: 12/04/2022] Open
Abstract
The repeated, rapid and often pronounced patterns of evolutionary divergence observed in insular plants, or the ‘plant island syndrome’, include changes in leaf phenotypes, growth, as well as the acquisition of a perennial lifestyle. Here, we sequence and describe the genome of the critically endangered, Galápagos-endemic species Scalesia atractyloides Arnot., obtaining a chromosome-resolved, 3.2-Gbp assembly containing 43,093 candidate gene models. Using a combination of fossil transposable elements, k-mer spectra analyses and orthologue assignment, we identify the two ancestral genomes, and date their divergence and the polyploidization event, concluding that the ancestor of all extant Scalesia species was an allotetraploid. There are a comparable number of genes and transposable elements across the two subgenomes, and while their synteny has been mostly conserved, we find multiple inversions that may have facilitated adaptation. We identify clear signatures of selection across genes associated with vascular development, growth, adaptation to salinity and flowering time, thus finding compelling evidence for a genomic basis of the island syndrome in one of Darwin’s giant daisies. Many island plant species share a syndrome of characteristic phenotype and life history. Cerca et al. find the genomic basis of the plant island syndrome in one of Darwin’s giant daisies, while separating ancestral genomes in a chromosome-resolved polyploid assembly.
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Affiliation(s)
- José Cerca
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Bent Petersen
- Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark.,Centre of Excellence for Omics-Driven Computational Biodiscovery, Faculty of Applied Sciences, AIMST University, Kedah, Malaysia
| | - José Miguel Lazaro-Guevara
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Angel Rivera-Colón
- Department of Evolution, Ecology, and Behavior, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Siri Birkeland
- Department of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Ås, Norway.,Natural History Museum, University of Oslo, Oslo, Norway
| | - Joel Vizueta
- Villum Centre for Biodiversity Genomics, Section for Ecology and Evolution, Department of Biology, University of Copenhagen, Universitetsparken 15, 2100, Copenhagen, Denmark
| | - Siyu Li
- Department of Plant Biology, University of California, Davis, Davis, CA, 95616, USA
| | - Qionghou Li
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - João Loureiro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-095, Coimbra, Portugal
| | - Chatchai Kosawang
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958, Frederiksberg C, Denmark
| | - Patricia Jaramillo Díaz
- Estación Científica Charles Darwin, Fundación Charles Darwin, Santa Cruz, Galápagos, Ecuador.,Department of Botany and Plant Physiology, University of Malaga, Malaga, Spain
| | - Gonzalo Rivas-Torres
- Colegio de Ciencias Biológicas y Ambientales COCIBA & Extensión Galápagos, Universidad San Francisco de Quito USFQ, Quito, 170901, Ecuador.,Galapagos Science Center, USFQ, UNC Chapel Hill, San Cristobal, Galapagos, Ecuador.,Estación de Biodiversidad Tiputini, Colegio de Ciencias Biológicas y Ambientales, Universidad San Francisco de Quito USFQ, Quito, Ecuador.,Courtesy Faculty, Department of Wildlife Ecology and Conservation, University of Florida, 110 Newins-Ziegler Hall, Gainesville, FL, 32611, USA
| | | | - Pablo Vargas
- Departamento de Biodiversidad y Conservación, Real Jardín Botánico (RJB-CSIC), Plaza de Murillo 2, 28014, Madrid, Spain
| | - Ross A McCauley
- Department of Biology, Fort Lewis College, Durango, CO, 81301, USA
| | - Gitte Petersen
- Department of Ecology, Environment and Plant Sciences, Stockholm University, SE-106 91, Stockholm, Sweden
| | - Luisa Santos-Bay
- Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark
| | - Nathan Wales
- Department of Archaeology, University of York, York, UK
| | - Julian M Catchen
- Department of Evolution, Ecology, and Behavior, University of Illinois at Urbana-Champaign, Champaign, IL, USA
| | - Daniel Machado
- Department of Biotechnology and Food Science, Norwegian University of Science and Technology, Trondheim, 7491, Norway
| | | | - Alexander Suh
- School of Biological Sciences, University of East Anglia, Norwich Research Park, NR4 7TU, Norwich, UK.,Department of Organismal Biology, Evolutionary Biology Centre (EBC), Science for Life Laboratory, Uppsala University, 75236, Uppsala, Sweden
| | - Neelima R Sinha
- Department of Plant Biology, University of California, Davis, Davis, CA, 95616, USA
| | - Lene R Nielsen
- Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, 1958, Frederiksberg C, Denmark
| | - Ole Seberg
- The Natural History Museum of Denmark, University of Copenhagen, Copenhagen, Denmark
| | - M Thomas P Gilbert
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway.,Centre for Evolutionary Hologenomics, The GLOBE Institute, Faculty of Health and Medical Sciences, University of Copenhagen, Øster Farimagsgade 5, 1353, Copenhagen, Denmark
| | | | - Loren H Rieseberg
- Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Michael D Martin
- Department of Natural History, NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway.
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Giffon T, Desbois M, Yakkundi P, Sekar K, Manlusoc M, Rosete R, Machado D, Calhoun S, Kothambawala T, Ng D, Tran V, Saini A, Jain A, Wang B, Kotturi M, Keyt B, Sinclair A. Abstract 3438: Enhanced NK and CD8+ T cell proliferation, tumor cytotoxicity and reversal of T cell exhaustion with IGM-7354, an anti-PD-L1 IgM antibody and IL-15 cytokine fusion. Cancer Res 2022. [DOI: 10.1158/1538-7445.am2022-3438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Anti-PD-1/PD-L1 therapies are efficacious in certain cancer indications, but often patients relapse following a primary response Therefore rational combinations are needed to enhance initial and durable responses of anti-PD-1/PD-L1 therapies. Immunostimulatory cytokine, IL-15 is an attractive combination partner to enhance anti-tumor NK and memory CD8+ T cell expansion and survival. We are developing IGM-7354, a high affinity, high avidity anti-PD-L1 pentameric IgM antibody with an IL-15Rα chain and IL-15 fused to the joining (J) chain, designed to deliver IL-15 to PD-L1 expressing tumors for enhancing anti-tumor immune responses. IGM-7354 was generated by grafting heavy chain variable regions of a high affinity humanized anti-PD-L1 IgG onto the IgM heavy chain framework, co-expressed with the light chain and the J chain which included a single IL-15Rα and IL-15 fusion. Binding ELISAs were performed using recombinant antigens. IGM-7354 bound human and cynomolgus monkey PD-L1 with similar affinities but did not bind to rat or mouse PD-L1. In addition, the IL-15 component of IGM-7354 bound to human and cynomolgus β chain of the trimeric IL-15 receptor with similar affinities, but with weaker binding affinity to rodent IL-15Rβ. Using in vitro assays with human and cynomolgus monkey PBMCs, IGM-7354 dose-dependently enhanced the proliferation of NK and CD8+ T cells. Furthermore, in an in vitro MLR setting, IGM-7354 was able to reverse T cell exhaustion beyond that of an IL-15/IL15Rα complex or anti-PD-L1 IgM or IgG alone, as demonstrated by an increase in activation and effector cytokine secretion. In vitro cytotoxicity and ADCC assays were performed with luciferase-tagged human cancer cell lines and PBMCs. IGM-7354 enhanced in vitro killing of PD-L1-expressing cancer cells by human PBMCs in monotherapy and in combination with other therapeutic agents. Efficacy and pharmacodynamic studies in an MDA-MB-231 xenograft mouse model showed dose-dependent increases in circulating NK and CD8+ T cells and tumor-infiltrating lymphocytes, which correlated with tumor regression. In cynomolgus monkeys, IGM-7354 markedly induced the proliferation of NK and CD8+ T cells in a dose-dependent manner with a preferential expansion of effector memory CD8+ T cells and γδ T cells in the periphery. IGM-7354 stimulates NK and CD8+ T cell expansion in vitro and in vivo plus induces tumor regressions in mouse tumor models in monotherapy or combination with various agents. This approach may enhance tumor localization of the immunostimulatory cytokine IL-15 through high affinity and high avidity binding to PD-L1 thereby improving anti-tumor responses and minimizing toxicity.
Citation Format: Thierry Giffon, Melanie Desbois, Poonam Yakkundi, Keerthana Sekar, Marigold Manlusoc, Rodnie Rosete, Daniel Machado, Susan Calhoun, Tasnim Kothambawala, Dean Ng, Vu Tran, Avneesh Saini, Abhinav Jain, Beatrice Wang, Maya Kotturi, Bruce Keyt, Angus Sinclair. Enhanced NK and CD8+ T cell proliferation, tumor cytotoxicity and reversal of T cell exhaustion with IGM-7354, an anti-PD-L1 IgM antibody and IL-15 cytokine fusion [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 3438.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Dean Ng
- 1IGM Biosciences, Mountain View, CA
| | - Vu Tran
- 1IGM Biosciences, Mountain View, CA
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9
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Machado D, Borges A, Laureano C. Psychiatric intervention on patients recovering from hospitalization due to Covid-19. Eur Psychiatry 2022. [PMCID: PMC9567797 DOI: 10.1192/j.eurpsy.2022.1308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction
According to recent reports Covid-19 patients may exhibit psychiatric co-morbidities that cause dysfunction, loss of autonomy and emotional suffering even after the physical illness is treated. Considering the high impact Covid-19 may have on mental health, we have created a psychiatric consultation dedicated to the study, observation and support of patients that developed mental illness after being hospitalized due to Covid-19.
Objectives
We aim at 1) describe the profile of patients that developed psychiatric comorbidities following a hospitalization due to Covid-19 and 2) recognize and treat early psychiatric symptoms in Covid-19 patients.
Methods
Based on what was described in other epidemic crisis, we established a semi-structured interview to evaluate several dimensions of the patients’ life that may have been affected by Covid-19 and that may impact on mental health. The interview included the Depression, Anxiety and Stress Scale (DASS-21), the Impact of Event Scale – Revised (IES-R) and the Insomnia Severity Index (ISI). Each patient was observed multiple times over several months. Our evaluation was done in parallel with consultations in Internal Medicine.
Results
Most patients complained of symptoms directly related with the infection of SARS-CoV-2, namely fatigue, short breath and reduced tolerance to efforts. Importantly, many patients also reported de novo or aggravation of anxiety, stress, depression, sleep disturbances and grief often associated with feelings of existential emptiness and lack of purpose.
Conclusions
Hospitalization due to Covid-19 has a high impact on mental health, raising important questions on purpose and emptiness. An early psychiatric intervention is highly recommended.
Disclosure
No significant relationships.
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Borges A, Machado D. Bulimia nervosa and borderline personality disorder - case report and literature review. Eur Psychiatry 2022. [PMCID: PMC9567176 DOI: 10.1192/j.eurpsy.2022.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction Bulimia Nervosa (BN) is a debilitating eating disorder characterized by binging and purging episodes generally accompanied by excessive concern with body weight and shape as well as body image disturbance. BN and Borderline Personality Disorder (BPD) may co-occur. In fact, studies estimate that one quarter to one third of patients with BN also meet criteria for BPD. However not much is known about the relationship between these two diseases. Nevertheless, the high comorbidity rate might not be surprising as both BN and BPD may share interacting aetiologies and common core symptoms such as impulsivity and emotional instability. So far, only very little is known about the clinical presentation of patients with both BN and BPD and their response to treatment. Objectives Literature review on BN and comorbid BPD. An illustrative clinical case is presented. Methods Case report and non-systematic review of the literature - sources obtained through search on Pubmed.gov database. Results Female, 19-year-old, student, lived with her mother and stepfather. Developed a poor relationship with her body image due to dental problems during high school. The patient started to binge eat, exhibit compensatory behaviors, restrictive eating pattern, body dissatisfaction and emotional instability while maintaining a normal BMI. Over the last year, she started a self-destructive behavior with slight improvement of BN symptoms. Conclusions Special attention should be given to patients suffering from BN and comorbid BPD as they present greater risk of recurrent suicide attempts and non-suicidal self-injury, as well as lower rates of remission. Early interventions that target impulsivity and problematic eating behavior may mitigate risk of future borderline personality features. Disclosure No significant relationships.
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Machado D, Borges A, Laureano C. Impact of Covid-19 on mental health of Portuguese health professionals – longitudinal study, phase I. Eur Psychiatry 2022. [PMCID: PMC9568155 DOI: 10.1192/j.eurpsy.2022.1268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction The Covid-19 pandemic brought enormous challenges for health professionals. As in past epidemics, the uncertainty, danger and fear of contamination and an excessive load of work under dramatic conditions may contribute to aggravate the mental health of health professionals. Objectives Explore how the Covid-19 crisis impacted the mental health of healthcare workers and how their mental status relates with perspectives on the recent past and near future. Methods A longitudinal study will be applied in two phases, Q1 and Q2, one year apart, to evaluate depression, anxiety and post-traumatic stress among health professionals from a healthcare center in Portugal. Phase Q1 is concluded and comprised the Depression, Anxiety and Stress Scale (DASS-21), the Impact of Event Scale – Revised (IES-R) and a questionnaire about the past and the future. Results The IES-R scale revealed that nurses are at a higher risk of developing post-traumatic stress disorder (PTSD) than other professionals. The levels of depression and anxiety in the DASS-21 show no significant differences. Interestingly, professionals who worked almost exclusively at inpatient wards show higher levels of depression, anxiety and stress than those who worked at several hospital units (emergency, inpatient and outpatient units). A positive correlation was found between depression and anxiety and negative perspectives about the past and the future. Conclusions Covid-19 posed a terrible challenge for health professionals. Its impact on the mental health of healthcare workers may be significant even after the pandemic is under control. Disclosure No significant relationships.
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Machado D, Vazquez-Colon Z, Lopez-Colon D, Joong A, Waldman E, Jaudon A, Lukich S, Cousino M, Peng D. End of Life in Children on Mechanical Circulatory Support. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.254] [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: 11/29/2022] Open
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Cruz-Duarte R, Rebelo de Almeida C, Negrão M, Fernandes A, Borralho P, Sobral D, Gallego-Paez LM, Machado D, Gramaça J, Vílchez J, Xavier AT, Ferreira MG, Miranda AR, Mansinho H, Brito MJ, Pacheco TR, Abreu C, Lucia-Costa A, Mansinho A, Fior R, Costa L, Martins M. Predictive and Therapeutic Implications of a Novel PLCγ1/SHP2-Driven Mechanism of Cetuximab Resistance in Metastatic Colorectal Cancer. Clin Cancer Res 2022; 28:1203-1216. [PMID: 34980600 PMCID: PMC9365369 DOI: 10.1158/1078-0432.ccr-21-1992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/14/2021] [Accepted: 12/27/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE Cetuximab is an EGFR-targeted therapy approved for the treatment of RAS wild-type (WT) metastatic colorectal cancer (mCRC). However, about 60% of these patients show innate resistance to cetuximab. To increase cetuximab efficacy, it is crucial to successfully identify responder patients, as well as to develop new therapeutic approaches to overcome cetuximab resistance. EXPERIMENTAL DESIGN We evaluated the value of EGFR effector phospholipase C gamma 1 (PLCγ1) in predicting cetuximab responses, by analyzing progression-free survival (PFS) of a multicentric retrospective cohort of 94 treated patients with mCRC (log-rank test and Cox regression model). Furthermore, we used in vitro and zebrafish xenotransplant models to identify and target the mechanism behind PLCγ1-mediated resistance to cetuximab. RESULTS In this study, levels of PLCγ1 were found increased in RAS WT tumors and were able to predict cetuximab responses in clinical samples and in vitro and in vivo models. Mechanistically, PLCγ1 expression was found to bypass cetuximab-dependent EGFR inhibition by activating ERK and AKT pathways. This novel resistance mechanism involves a noncatalytic role of PLCγ1 SH2 tandem domains in the propagation of downstream signaling via SH2-containing protein tyrosine phosphatase 2 (SHP2). Accordingly, SHP2 inhibition sensitizes PLCγ1-resistant cells to cetuximab. CONCLUSIONS Our discoveries reveal the potential of PLCγ1 as a predictive biomarker for cetuximab responses and suggest an alternative therapeutic approach to circumvent PLCγ1-mediated resistance to cetuximab in patients with RAS WT mCRC. In this way, this work contributes to the development of novel strategies in the medical management and treatment of patients with mCRC.
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Affiliation(s)
- Raquel Cruz-Duarte
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | | | - Magda Negrão
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal
| | - Afonso Fernandes
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Paula Borralho
- Institute of Pathology, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Daniel Sobral
- Universidade Nova Lisboa, UCIBIO, Departamento de Ciências da Vida, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica, Portugal
| | | | - Daniel Machado
- Oncology Division, Centro Hospitalar Barreiro-Montijo, Barreiro, Portugal
| | - João Gramaça
- Oncology Division, Centro Hospitalar Barreiro-Montijo, Barreiro, Portugal
| | - José Vílchez
- Oncology Division, Centro Hospitalar Barreiro-Montijo, Barreiro, Portugal
| | - Ana T. Xavier
- Oncology Division, Centro Hospitalar Barreiro-Montijo, Barreiro, Portugal
| | - Miguel Godinho Ferreira
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal.,Institute for Research on Cancer and Aging of Nice (IRCAN), UMR7284 U1081 UNS, Université Côte d'Azur, Nice, France
| | - Ana R. Miranda
- Hemato-Oncologia Division, Hospital Garcia de Orta, Almada, Portugal
| | - Helder Mansinho
- Hemato-Oncologia Division, Hospital Garcia de Orta, Almada, Portugal
| | - Maria J. Brito
- Pathology Division, Hospital Garcia de Orta, Almada, Portugal
| | - Teresa R. Pacheco
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.,Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
| | - Catarina Abreu
- Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
| | - Ana Lucia-Costa
- Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
| | - André Mansinho
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.,Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal
| | - Rita Fior
- Champalimaud Centre for the Unknown, Champalimaud Foundation, Lisbon, Portugal
| | - Luís Costa
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.,Oncology Division, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, Lisbon, Portugal.,Corresponding Authors: Marta Martins, Translational Oncology, Instituto de Medicina Molecular - João Lobo Antunes, Lisbon 1649-028, Portugal. E-mail: ; and Luís Costa, Instituto de Medicina Molecular-João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon 1649-028, Portugal. E-mail:
| | - Marta Martins
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.,Corresponding Authors: Marta Martins, Translational Oncology, Instituto de Medicina Molecular - João Lobo Antunes, Lisbon 1649-028, Portugal. E-mail: ; and Luís Costa, Instituto de Medicina Molecular-João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon 1649-028, Portugal. E-mail:
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Alloul A, Spanoghe J, Machado D, Vlaeminck SE. Unlocking the genomic potential of aerobes and phototrophs for the production of nutritious and palatable microbial food without arable land or fossil fuels. Microb Biotechnol 2022; 15:6-12. [PMID: 33529492 PMCID: PMC8719805 DOI: 10.1111/1751-7915.13747] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 12/24/2020] [Indexed: 01/04/2023] Open
Abstract
The increasing world population and living standards urgently necessitate the transition towards a sustainable food system. One solution is microbial protein, i.e. using microbial biomass as alternative protein source for human nutrition, particularly based on renewable electron and carbon sources that do not require arable land. Upcoming green electrification and carbon capture initiatives enable this, yielding new routes to H2, CO2 and CO2-derived compounds like methane, methanol, formic- and acetic acid. Aerobic hydrogenotrophs, methylotrophs, acetotrophs and microalgae are the usual suspects for nutritious and palatable biomass production on these compounds. Interestingly, these compounds are largely un(der)explored for purple non-sulfur bacteria, even though these microbes may be suitable for growing aerobically and phototrophically on these substrates. Currently, selecting the best strains, metabolisms and cultivation conditions for nutritious and palatable microbial food mainly starts from empirical growth experiments, and mostly does not stretch beyond bulk protein. We propose a more target-driven and efficient approach starting from the genome-embedded potential to tuning towards, for instance, essential amino- and fatty acids, vitamins, taste,... Genome-scale metabolic models combined with flux balance analysis will facilitate this, narrowing down experimental variations and enabling to get the most out of the 'best' combinations of strain and electron and carbon sources.
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Affiliation(s)
- Abbas Alloul
- Research Group of Sustainable Energy, Air and Water TechnologyDepartment of Bioscience EngineeringUniversity of AntwerpGroenenborgerlaan 171Antwerpen2020Belgium
| | - Janne Spanoghe
- Research Group of Sustainable Energy, Air and Water TechnologyDepartment of Bioscience EngineeringUniversity of AntwerpGroenenborgerlaan 171Antwerpen2020Belgium
| | - Daniel Machado
- Department of Biotechnology and Food ScienceNorwegian University of Science and TechnologyTrondheim7491Norway
| | - Siegfried E. Vlaeminck
- Research Group of Sustainable Energy, Air and Water TechnologyDepartment of Bioscience EngineeringUniversity of AntwerpGroenenborgerlaan 171Antwerpen2020Belgium
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Machado D, Mulet R. From random point processes to hierarchical cavity master equations for stochastic dynamics of disordered systems in random graphs: Ising models and epidemics. Phys Rev E 2021; 104:054303. [PMID: 34942786 DOI: 10.1103/physreve.104.054303] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 10/25/2021] [Indexed: 11/07/2022]
Abstract
We start from the theory of random point processes to derive n-point coupled master equations describing the continuous dynamics of discrete variables in random graphs. These equations constitute a hierarchical set of approximations that generalize and improve the cavity master equation (CME), a recently obtained closure for the usual master equation representing the dynamics. Our derivation clarifies some of the hypotheses and approximations that originally led to the CME, considered now as the first order of a more general technique. We tested the scheme in the dynamics of three models defined over diluted graphs: the Ising ferromagnet, the Viana-Bray spin-glass, and the susceptible-infectious-susceptible model for epidemics. In the first two, the equations perform similarly to the best-known approaches in literature. In the latter, they outperform the well-known pair quenched mean-field approximation.
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Affiliation(s)
- D Machado
- Group of Complex Systems and Statistical Physics. Department of Theoretical Physics, Physics Faculty, University of Havana, Cuba
| | - R Mulet
- Group of Complex Systems and Statistical Physics. Department of Theoretical Physics, Physics Faculty, University of Havana, Cuba
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Giffon T, Desbois M, Ng D, Yakkundi P, Manlusoc M, Oyasu M, Rosete R, Machado D, Calhoun S, Kothambawala T, Saini A, Wang B, Kotturi M, Keyt B, Sinclair A. 711 IGM-7354 is an anti-PD-L1 IgM antibody and IL-15 cytokine fusion that enhances NK and CD8+ T cell proliferation and tumor cytotoxicity plus potently reverses T cell exhaustion. J Immunother Cancer 2021. [DOI: 10.1136/jitc-2021-sitc2021.711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BackgroundWhile approved PD-1/PD-L1 inhibitory antibodies have demonstrated clinical efficacy in certain cancer patients, relapse following a primary response is often observed. Enhancing anti-tumor immune responses with an immunostimulatory cytokine, IL-15 is an attractive combination strategy to enhance anti-tumor NK and memory CD8+ T cell expansion and survival. We have developed IGM-7354, a high affinity, high avidity anti-PD-L1 pentameric IgM antibody with an IL-15Rα chain and IL-15 fused to the joining (J) chain, designed to deliver IL-15 to PD-L1 expressing tumors for enhancing anti-tumor immune responses.MethodsIGM-7354 was generated by grafting heavy chain variable regions of a high affinity humanized anti-PD-L1 IgG onto the IgM heavy chain framework, co-expressed with the light chain and the J chain which included a single IL-15Rα and IL-15 fusion. Binding ELISAs were performed using recombinant antigens. Human and cynomolgus monkey PBMCs were used for potency testing. Reversal of T cell exhaustion was tested using in vitro MLR. In vitro cytotoxicity assays were performed with luciferase-tagged MDA-MB-231 cells and PBMCs. In vivo pharmacodynamic studies were conducted in mice and cynomolgus monkeys.ResultsIGM-7354 bound human and cynomolgus monkey PD-L1 with the same affinity but did not bind to rat or mouse PD-L1. In addition, the IL-15 component of IGM-7354 bound to human and cynomolgus β chain of the trimeric IL-15 receptor with similar affinities, but with weaker binding affinity to rodent IL-15Rβ. Using in vitro assays with PBMCs, IGM-7354 dose dependently enhanced the proliferation of human and cynomolgus monkey NK and CD8+ T cells. Furthermore, IGM-7354 was able to reverse T cell exhaustion in an in vitro MLR beyond that of an IL-15/IL15Rα complex or anti-PD-L1 IgM or IgG alone, as demonstrated by an increase in activation and effector cytokine secretion. IGM-7354 also enhanced in vitro killing of PD-L1-expressing MDA-MB-231 breast cancer cells by human PBMCs. Pharmacodynamic studies in an MDA-MB-231 xenograft mouse model showed dose-dependent increases in circulating NK and CD8+ T cells and tumor infiltrating lymphocytes, which correlated with tumor regression. In cynomolgus monkeys, intravenous administration of IGM-7354 was well tolerated and dose dependently induced the proliferation of NK and CD8+ T cells.ConclusionsIGM-7354 stimulates NK and CD8+ T cell expansion in vitro and in vivo plus induces tumor regressions in mouse tumor models. This approach may enhance tumor localization of the immunostimulatory cytokine IL-15 through high affinity and high avidity binding to PD-L1 thereby improving anti-tumor responses and minimizing toxicity.Ethics ApprovalAll animal studies were conducted according to approved Institutional Animal Care and Use Committee (IACUC) protocols of the testing facilities.
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Radic Shechter K, Kafkia E, Zirngibl K, Gawrzak S, Alladin A, Machado D, Lüchtenborg C, Sévin DC, Brügger B, Patil KR, Jechlinger M. Metabolic memory underlying minimal residual disease in breast cancer. Mol Syst Biol 2021; 17:e10141. [PMID: 34694069 PMCID: PMC8543468 DOI: 10.15252/msb.202010141] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 09/23/2021] [Accepted: 09/29/2021] [Indexed: 01/11/2023] Open
Abstract
Tumor relapse from treatment-resistant cells (minimal residual disease, MRD) underlies most breast cancer-related deaths. Yet, the molecular characteristics defining their malignancy have largely remained elusive. Here, we integrated multi-omics data from a tractable organoid system with a metabolic modeling approach to uncover the metabolic and regulatory idiosyncrasies of the MRD. We find that the resistant cells, despite their non-proliferative phenotype and the absence of oncogenic signaling, feature increased glycolysis and activity of certain urea cycle enzyme reminiscent of the tumor. This metabolic distinctiveness was also evident in a mouse model and in transcriptomic data from patients following neo-adjuvant therapy. We further identified a marked similarity in DNA methylation profiles between tumor and residual cells. Taken together, our data reveal a metabolic and epigenetic memory of the treatment-resistant cells. We further demonstrate that the memorized elevated glycolysis in MRD is crucial for their survival and can be targeted using a small-molecule inhibitor without impacting normal cells. The metabolic aberrances of MRD thus offer new therapeutic opportunities for post-treatment care to prevent breast tumor recurrence.
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Affiliation(s)
| | - Eleni Kafkia
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- The Medical Research Council Toxicology UnitUniversity of CambridgeCambridgeUK
| | - Katharina Zirngibl
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- The Medical Research Council Toxicology UnitUniversity of CambridgeCambridgeUK
| | - Sylwia Gawrzak
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- Present address:
Cellzome GmbHFunctional GenomicsGlaxoSmithKlineHeidelbergGermany
| | - Ashna Alladin
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
| | - Daniel Machado
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- Present address:
Norwegian University of Science and TechnologyTrondheimNorway
| | | | - Daniel C Sévin
- Cellzome GmbHFunctional GenomicsGlaxoSmithKlineHeidelbergGermany
| | - Britta Brügger
- Biochemie‐Zentrum der Universität Heidelberg (BZH)HeidelbergGermany
| | - Kiran R Patil
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- The Medical Research Council Toxicology UnitUniversity of CambridgeCambridgeUK
| | - Martin Jechlinger
- European Molecular Biology Laboratory (EMBL)HeidelbergGermany
- MOLIT Institute gGmbHHeilbronnGermany
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Goldman A, Wollina U, Machado D, Marinowic D. LONG-PULSED ND:YAG LASER TO TREAT TELANGIECTASIA OF THE NOSE: A COMPREHENSIVE 5-YEAR SINGLE CENTER STUDY. Georgian Med News 2021:7-12. [PMID: 34248020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Telangiectases of the nose are of esthetic concern and treatment is warranted. The study provides the results of 5 years of treatment of telangiectases of the nose region with the long-pulsed Nd:YAG 1,064 nm laser. A retrospective analysis was conducted in patients of Fitzpatrick skin type II-V. Exclusion criteria were patients with a previous history of treatment of the nose region, pregnant or lactating patients or patients with unrealistic expectations regarding the treatment risks, limitations and results. Standardized photographs were obtained before each session and at least 2 months after the last treatment session. A long-pulsed Nd:YAG 1,064 nm laser was used with a spot size of 2.5mm, fluence of 100 - 175 J/cm2, pulse duration of up to 135ms and repetition rate of 2-4 Hz. The follow-up ranged from 2 months to 5 years. The number of laser sessions varied from 1 to 5 monthly. Assessment was made by comparing pre-treatment and post-treatment photographs by two independent specialists and also by the patients' own assessment. All patients presented improvement of the vascular alterations. Evaluation of independent specialists as well as the evaluation of the patients themselves showed a high degree of satisfaction with the treatment. The treatment presented only few transitory side effects. Treatment of telangiectasia on the nose skin with the long-pulsed Nd:YAG 1,064 nm laser demonstrated to be safe and effective even in darker pigmented skin. The major limitation of this study is its retrospective nature.
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Affiliation(s)
- A Goldman
- 1Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - U Wollina
- 2Dresden Municipal Hospital, Academic Teaching Hospital, Department of Dermatology and Allergology, Dresden, Germany
| | - D Machado
- 3Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - D Marinowic
- 3Brain Institute of Rio Grande do Sul (BraIns), Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
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Miranda J, Silva L, Almeida C, Figueiredo I, Machado D, Fonseca S. Bleuler’s a or autism spectrum disorder in adults? Eur Psychiatry 2021. [PMCID: PMC9475672 DOI: 10.1192/j.eurpsy.2021.1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Introduction Nowadays we know that autism spectrum disorders (ASD) and Schizophrenic spectrum (SS) are different types of disorders in their etiology, symptoms and prognosis, but the clinical distinction is often difficult to make due to comorbidity and similar symptoms. Objectives With this project, the authors intend to explore the differential diagnosis between ASD and SS specially when we talk about critical ages of onset. Methods An analysis of articles searched on Pubmed (articles between 2010-2020) with the key words “adult autism”, “childhood onset schizophrenia”, “childhood psychosis”. Results Early-onset schizophrenia (EOS) is defined as occurring before age 18 years. The condition share key diagnostic symptoms with adult-onset schizophrenia (AOS) but his prognoses and comorbidities differ. Autism spectrum disorder (ASD) is a common neurodevelopmental disorder characterized by difficulties since early childhood across reciprocal social communication and restricted interests and behaviors. ASD is a lifelong neurodevelopmental disorder, however there is a lack of answers and research for adults with ASD. There are shared aspects of odd thinking, rigid behaviors and impaired socialization in schizophrenia and ASD and COS seems to have a strong relationship with ASD, being comorbid in up to 50% of cases. Conclusions Usually the evaluation of the developmental history of the person, prodrome and onset, its course and the presence of positive symptoms of schizophrenia is enough to help us find a diagnosis. Unfortunately, in some ages the conclusion is not so easy to find. However is essential to determine whether the clinical manifestations belong to the autistic spectrum, the schizophrenic or result from comorbidity.
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Blasche S, Kim Y, Mars RAT, Machado D, Maansson M, Kafkia E, Milanese A, Zeller G, Teusink B, Nielsen J, Benes V, Neves R, Sauer U, Patil KR. Metabolic cooperation and spatiotemporal niche partitioning in a kefir microbial community. Nat Microbiol 2021; 6:196-208. [PMID: 33398099 PMCID: PMC7610452 DOI: 10.1038/s41564-020-00816-5] [Citation(s) in RCA: 112] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 10/19/2020] [Indexed: 01/28/2023]
Abstract
Microbial communities often undergo intricate compositional changes yet also maintain stable coexistence of diverse species. The mechanisms underlying long-term coexistence remain unclear as system-wide studies have been largely limited to engineered communities, ex situ adapted cultures or synthetic assemblies. Here, we show how kefir, a natural milk-fermenting community of prokaryotes (predominantly lactic and acetic acid bacteria) and yeasts (family Saccharomycetaceae), realizes stable coexistence through spatiotemporal orchestration of species and metabolite dynamics. During milk fermentation, kefir grains (a polysaccharide matrix synthesized by kefir microorganisms) grow in mass but remain unchanged in composition. In contrast, the milk is colonized in a sequential manner in which early members open the niche for the followers by making available metabolites such as amino acids and lactate. Through metabolomics, transcriptomics and large-scale mapping of inter-species interactions, we show how microorganisms poorly suited for milk survive in-and even dominate-the community, through metabolic cooperation and uneven partitioning between grain and milk. Overall, our findings reveal how inter-species interactions partitioned in space and time lead to stable coexistence.
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Affiliation(s)
- Sonja Blasche
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - Yongkyu Kim
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - Ruben A T Mars
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Daniel Machado
- European Molecular Biology Laboratory, Heidelberg, Germany
| | | | - Eleni Kafkia
- European Molecular Biology Laboratory, Heidelberg, Germany
- The Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK
| | | | - Georg Zeller
- European Molecular Biology Laboratory, Heidelberg, Germany
| | - Bas Teusink
- Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Jens Nielsen
- Chalmers University of Technology, Gothenburg, Sweden
| | - Vladimir Benes
- European Molecular Biology Laboratory, Heidelberg, Germany
| | | | - Uwe Sauer
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Kiran Raosaheb Patil
- European Molecular Biology Laboratory, Heidelberg, Germany.
- The Medical Research Council Toxicology Unit, University of Cambridge, Cambridge, UK.
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Machado D, Maistrenko OM, Andrejev S, Kim Y, Bork P, Patil KR, Patil KR. Polarization of microbial communities between competitive and cooperative metabolism. Nat Ecol Evol 2021; 5:195-203. [PMID: 33398106 PMCID: PMC7610595 DOI: 10.1038/s41559-020-01353-4] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [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: 02/06/2020] [Accepted: 10/21/2020] [Indexed: 12/20/2022]
Abstract
Resource competition and metabolic cross-feeding are among the main drivers of microbial community assembly. Yet the degree to which these two conflicting forces are reflected in the composition of natural communities has not been systematically investigated. Here, we use genome-scale metabolic modelling to assess the potential for resource competition and metabolic cooperation in large co-occurring groups (up to 40 members) across thousands of habitats. Our analysis reveals two distinct community types, which are clustered at opposite ends of a spectrum in a trade-off between competition and cooperation. At one end are highly cooperative communities, characterized by smaller genomes and multiple auxotrophies. At the other end are highly competitive communities, which feature larger genomes and overlapping nutritional requirements, and harbour more genes related to antimicrobial activity. The latter are mainly present in soils, whereas the former are found in both free-living and host-associated habitats. Community-scale flux simulations show that, whereas competitive communities can better resist species invasion but not nutrient shift, cooperative communities are susceptible to species invasion but resilient to nutrient change. We also show, by analysing an additional data set, that colonization by probiotic species is positively associated with the presence of cooperative species in the recipient microbiome. Together, our results highlight the bifurcation between competitive and cooperative metabolism in the assembly of natural communities and its implications for community modulation.
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Affiliation(s)
- Daniel Machado
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.,Department of Biotechnology and Food Science, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | | | - Sergej Andrejev
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Yongkyu Kim
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Peer Bork
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Kaustubh R Patil
- Institute of Neuroscience and Medicine, Brain and Behaviour (INM-7), Research Center Jülich, Jülich, Germany.,Institute of Systems Neuroscience, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Kiran R Patil
- European Molecular Biology Laboratory (EMBL), Heidelberg, Germany. .,Medical Research Council (MRC) Toxicology Unit, University of Cambridge, Cambridge, UK.
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Machado D, Boyer O. La médiation professionnelle : sortir des conflits et créer la confiance. ARCH MAL PROF ENVIRO 2020. [DOI: 10.1016/j.admp.2020.03.515] [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: 11/29/2022]
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Hartzell CJ, Long JB, White WM, Machado D, Austin TM. Ultrasound-guided bilateral rectus sheath block with and without dexmedetomidine in pediatric umbilical hernia repairs: a retrospective interrupted time series analysis. Reg Anesth Pain Med 2020; 45:1021-1022. [DOI: 10.1136/rapm-2020-101463] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 05/12/2020] [Accepted: 05/15/2020] [Indexed: 11/03/2022]
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Machado D, Martimbianco ALC, Bussadori SK, Pacheco RL, Riera R, Santos EM. Botulinum Toxin Type A for Painful Temporomandibular Disorders: Systematic Review and Meta-Analysis. The Journal of Pain 2020; 21:281-293. [DOI: 10.1016/j.jpain.2019.08.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/29/2019] [Accepted: 08/11/2019] [Indexed: 01/02/2023]
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Oliveira AM, Machado D, Fonseca JB, Palha F, Silva Moreira P, Sousa N, Cerqueira JJ, Morgado P. Stigmatizing Attitudes Toward Patients With Psychiatric Disorders Among Medical Students and Professionals. Front Psychiatry 2020; 11:326. [PMID: 32425827 PMCID: PMC7207477 DOI: 10.3389/fpsyt.2020.00326] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 04/01/2020] [Indexed: 01/08/2023] Open
Abstract
INTRODUCTION Stigma attached to mental health encompasses discrimination and exclusion of psychiatric patients and hinders their opportunities to have more productive and fulfilling lives. Moreover, stigma also exists among health professionals, and therefore, it hampers the provision of treatment and care and the promotion of mental well-being. This manuscript intends to assess and compare the levels of stigmatization toward patients with mental illness between medical students and doctors from different specialties. METHODS The Portuguese version of Attribution Questionnaire (AQ-27) was used to assess the attitudes of medical students (n = 203), non-psychiatry doctors (n = 121), and psychiatry specialists (n = 29) from the University of Minho and three hospitals in the region of Braga, Portugal (Hospital de Braga, Hospital Senhora da Oliveira, and Hospital de Fafe). RESULTS Psychiatrists were the group that displayed lower levels of stigmatizing attitudes in all the items of the AQ-27, followed by the students. The regression analyses revealed that professional group and presence of a relative with mental illness were the factors that have a significant impact on the levels of stigmatization. CONCLUSIONS Mental illness stigma is widely spread in community and reaches not only general population but also health professionals. Psychiatrists presented lower levels of stigma compared with non-psychiatry physicians and medical students. We found that stigma is related with age and the presence of relatives with psychiatric disorders. These findings highlight the critical relevance of raising awareness on this topic and, therefore, break stereotypes to reduce the negative consequences of stigma.
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Affiliation(s)
- Ana Margarida Oliveira
- Department of Cardiology, Hospital Senhora da Oliveira, Guimarães, Portugal.,School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Daniel Machado
- School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João B Fonseca
- Department of Psychiatry, Hospital Senhora da Oliveira, Guimarães, Portugal.,Department of Psychiatry, Hospital de Braga, Braga, Portugal
| | - Filipa Palha
- ENCONTRAR+SE, Association for the Promotion of Mental Health, Porto, Portugal.,Centre for Studies in Human Development, Faculty of Education and Psychology, Catholic University of Portugal, Porto, Portugal
| | - Pedro Silva Moreira
- School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno Sousa
- School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - João J Cerqueira
- School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Department of Neurology, Hospital de Braga, Braga, Portugal
| | - Pedro Morgado
- School of Health Sciences, Life and Health Sciences Research Institute (ICVS), University of Minho, Braga, Portugal.,ICVS-3Bs PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Department of Psychiatry, Hospital de Braga, Braga, Portugal
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Luz I, Querido Conde S, Adragão T, Weigert A, Casqueiro Salvadinha A, Regina Oliveira M, Machado D. MON-182 KIDNEY TRANSPLANTATION OUTCOMES IN DEPENDENT PATIENTS: A THREE-DECADE EXPERIENCE. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.977] [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: 10/26/2022] Open
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Kang K, Bergdahl B, Machado D, Dato L, Han TL, Li J, Villas-Boas S, Herrgård MJ, Förster J, Panagiotou G. Linking genetic, metabolic, and phenotypic diversity among Saccharomyces cerevisiae strains using multi-omics associations. Gigascience 2019; 8:giz015. [PMID: 30715293 PMCID: PMC6446221 DOI: 10.1093/gigascience/giz015] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/29/2018] [Accepted: 01/24/2019] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND The selection of bioengineering platform strains and engineering strategies to improve the stress resistance of Saccharomyces cerevisiae remains a pressing need in bio-based chemical production. Thus, a systematic effort to exploit genotypic and phenotypic diversity to boost yeast's industrial value is still urgently needed. RESULTS We analyzed 5,400 growth curves obtained from 36 S. cerevisiae strains and comprehensively profiled their resistances against 13 industrially relevant stresses. We observed that bioethanol and brewing strains exhibit higher resistance against acidic conditions; however, plant isolates tend to have a wider range of resistance, which may be associated with their metabolome and fluxome signatures in the tricarboxylic acid cycle and fatty acid metabolism. By deep genomic sequencing, we found that industrial strains have more genomic duplications especially affecting transcription factors, showing that they result from disparate evolutionary paths in comparison with the environmental strains, which have more indels, gene deletions, and strain-specific genes. Genome-wide association studies coupled with protein-protein interaction networks uncovered novel genetic determinants of stress resistances. CONCLUSIONS These resistance-related engineering targets and strain rankings provide a valuable source for engineering significantly improved industrial platform strains.
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Affiliation(s)
- Kang Kang
- Systems Biology & Bioinformatics Group, School of Biological Sciences, The University of Hong Kong, Hong Kong S.A.R., China
- Systems Biology & Bioinformatics Unit, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Jena, Germany
| | - Basti Bergdahl
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Daniel Machado
- Department of Biological Engineering, School of Engineering, University of Minho, Braga, Portugal
- The European Molecular Biology Laboratory (EMBL), Heidelberg, Germany
| | - Laura Dato
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Ting-Li Han
- Centre for Microbial Innovation, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Jun Li
- Systems Biology & Bioinformatics Group, School of Biological Sciences, The University of Hong Kong, Hong Kong S.A.R., China
- Systems Biology & Bioinformatics Unit, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Jena, Germany
| | - Silas Villas-Boas
- Centre for Microbial Innovation, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - Markus J Herrgård
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Jochen Förster
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Gianni Panagiotou
- Systems Biology & Bioinformatics Group, School of Biological Sciences, The University of Hong Kong, Hong Kong S.A.R., China
- Systems Biology & Bioinformatics Unit, Leibniz Institute for Natural Product Research and Infection Biology – Hans Knöll Institute, Jena, Germany
- Department of Microbiology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R., China
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Machado D, Marques C, Dias M, Campainha S, Barroso A. Inflammatory prognostic biomarkers in advanced non-small cell lung cancer. Pulmonology 2019; 25:181-183. [PMID: 30935945 DOI: 10.1016/j.pulmoe.2019.02.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 02/13/2019] [Accepted: 02/24/2019] [Indexed: 12/18/2022] Open
Affiliation(s)
- D Machado
- Pulmonology Department, Gaia/Espinho Hospital Center, Vila Nova de Gaia, Portugal.
| | - C Marques
- Pulmonology Department, Gaia/Espinho Hospital Center, Vila Nova de Gaia, Portugal
| | - M Dias
- Thoracic Tumors Multidisciplinary Unit, Pulmonology Department, Gaia/Espinho Hospital Center, Vila Nova de Gaia, Portugal
| | - S Campainha
- Thoracic Tumors Multidisciplinary Unit, Pulmonology Department, Gaia/Espinho Hospital Center, Vila Nova de Gaia, Portugal
| | - A Barroso
- Thoracic Tumors Multidisciplinary Unit, Pulmonology Department, Gaia/Espinho Hospital Center, Vila Nova de Gaia, Portugal
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Bouceiro-Mendes R, Ortins-Pina A, Fraga A, Marques T, Viveiros M, Machado D, Soares-de-Almeida L, Freitas JP, Filipe P. Mycobacterium marinum lymphocutaneous infection. Dermatol Online J 2019; 25:13030/qt5bb78905. [PMID: 30865411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 02/27/2019] [Indexed: 06/09/2023] Open
Abstract
Mycobacterium marinum is a nontuberculous mycobacteria with worldwide distribution that lives in fresh or salt water and is responsible for infections in fish, and sometimes in humans. Human disease consists mainly of cutaneous nodules, but deep structure involvement may also occur. Diagnosis of M. marinum infection remains a challenge, with a considerable time delay between onset of symptoms and diagnosis. We present a 33-year-old man with no immunosuppressive history who was seen in our department with skin nodules over his hand and forearm, distributed in a sporotrichoid pattern. His hobbies included maintaining an aquarium of tropical fish. Histological examination of the patient's skin biopsy was compatible with the diagnosis of mycobacterial infection, and the Ziehl-Neelsen staining revealed acid-fast bacilli. Molecular techniques confirmed the suspicion of M. marinum infection. A necropsy was performed on one of the patient's fish, more specifically, a Poecilia reticulata, and resulted in identification of M. marinum from its gut. The patient was treated with clarithromycin, ethambutol, and rifampicin for 9 months, with clearance of infection.
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Affiliation(s)
- R Bouceiro-Mendes
- Dermatology Department, Centro Hospitalar Lisboa Norte, Hospital de Santa Maria, Lisbon.
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Bouceiro-Mendes R, Ortins-Pina A, Fraga A, Marques T, Viveiros M, Machado D, Soares-de-Almeida L, Freitas JP, Filipe P. Mycobacterium marinum lymphocutaneous infection. Dermatol Online J 2019. [DOI: 10.5070/d3252042893] [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: 11/08/2022] Open
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Machado D, Andrejev S, Tramontano M, Patil KR. Fast automated reconstruction of genome-scale metabolic models for microbial species and communities. Nucleic Acids Res 2018; 46:7542-7553. [PMID: 30192979 PMCID: PMC6125623 DOI: 10.1093/nar/gky537] [Citation(s) in RCA: 283] [Impact Index Per Article: 47.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/17/2018] [Accepted: 05/29/2018] [Indexed: 12/26/2022] Open
Abstract
Genome-scale metabolic models are instrumental in uncovering operating principles of cellular metabolism, for model-guided re-engineering, and unraveling cross-feeding in microbial communities. Yet, the application of genome-scale models, especially to microbial communities, is lagging behind the availability of sequenced genomes. This is largely due to the time-consuming steps of manual curation required to obtain good quality models. Here, we present an automated tool, CarveMe, for reconstruction of species and community level metabolic models. We introduce the concept of a universal model, which is manually curated and simulation ready. Starting with this universal model and annotated genome sequences, CarveMe uses a top-down approach to build single-species and community models in a fast and scalable manner. We show that CarveMe models perform closely to manually curated models in reproducing experimental phenotypes (substrate utilization and gene essentiality). Additionally, we build a collection of 74 models for human gut bacteria and test their ability to reproduce growth on a set of experimentally defined media. Finally, we create a database of 5587 bacterial models and demonstrate its potential for fast generation of microbial community models. Overall, CarveMe provides an open-source and user-friendly tool towards broadening the use of metabolic modeling in studying microbial species and communities.
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Affiliation(s)
- Daniel Machado
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Sergej Andrejev
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Melanie Tramontano
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Kiran Raosaheb Patil
- European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
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Weigert A, Querido S, Carvalho L, Lebre L, Chagas C, Matias P, Birne R, Nascimento C, Jorge C, Adragão T, Bruges M, Machado D. Hepatitis C Virus Eradication in Kidney Transplant Recipients: A Single-Center Experience in Portugal. Transplant Proc 2018; 50:743-745. [PMID: 29661427 DOI: 10.1016/j.transproceed.2018.02.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
INTRODUCTION Hepatitis C (HCV) is a major cause of liver impairment post-kidney transplantation (KT). Anti-HCV direct-acting antivirals (DAA) made viral eradication possible. METHODS We performed a retrospective review of KT patients (n = 23) who received DAA at our hospital. Sustained viral response (SVR) was defined as absence of viral detection 12 weeks after cessation of therapy. RESULTS From 1985 to September 2017, 1440 patients underwent transplantation at Hospital Santa Cruz. From a total of 32 HCV RNA+ KT recipients on follow-up, we describe the first 23 patients treated with DAA. They were 56.7 ± 9.1 years old; 22 were white, 52.2% were males, they underwent transplantation 18.8 ± 9.0 years ago, and 13 had genotype 1B, 21 were naïve, and 9 had stages F3/F4. All but 2 patients, treated with grazoprevir/elbasvir, received sofosbuvir (18 with ledispasvir, 2 with daclastavir, and 4 with simultaneous ribavirin). Pretreatment, intra-treatment, and post-treatment creatinine clearances were 61.4, 60.6, and 60.7 mL/min/1.73 m2, respectively (not significant [NS]). Cyclosporine A was the basis of immunosuppression in the majority [(n = 14); pretreatment and intra-treatment levels were 79.5 ± 23.0 and 91.8 ± 26.0 ng/mL, respectively (P = .08)]; tacrolimus (n = 8) and mammalian target of rapamycin (mTOR) levels (n = 5) were also similar. One patient interrupted ribavirin after 7 weeks due to anemia; all other patients completed the treatment course without major side effects. Only 3 patients presented positive viral RNA at the fourth week of treatment and SVR was achieved in 100% of the patients 12 weeks after treatment. CONCLUSIONS DAA therapy was well tolerated and effective in 100% of our treated patients, without significant impact on the renal function or on the immunosuppression.
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Affiliation(s)
- A Weigert
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal.
| | - S Querido
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - L Carvalho
- Gastroenterology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - L Lebre
- Gastroenterology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - C Chagas
- Gastroenterology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - P Matias
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - R Birne
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - C Nascimento
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - C Jorge
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - T Adragão
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - M Bruges
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
| | - D Machado
- Nephrology Department, Hospital Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal
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El-Halah A, Machado D, González N, Contreras J, López-Carrasquero F. Use of super absorbent hydrogels derivative from acrylamide with itaconic acid and itaconates to remove metal ions from aqueous solutions. J Appl Polym Sci 2018. [DOI: 10.1002/app.46999] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Amal El-Halah
- Grupo de Polímeros, Departamento de Química, Facultad de Ciencias; Universidad de Los Andes; Mérida 5101-A Venezuela
| | - Daniel Machado
- Laboratorio de Investigación en Análisis Químico, Industrial y Agropecuario (LIAQIA), Departamento de Química, Facultad de Ciencias; Universidad de Los Andes; Mérida 5101-A Venezuela
| | - Nain González
- Grupo de Polímeros, Departamento de Química, Facultad de Ciencias; Universidad de Los Andes; Mérida 5101-A Venezuela
| | - Jesús Contreras
- Grupo de Polímeros, Departamento de Química, Facultad de Ciencias; Universidad de Los Andes; Mérida 5101-A Venezuela
| | - Francisco López-Carrasquero
- Grupo de Polímeros, Departamento de Química, Facultad de Ciencias; Universidad de Los Andes; Mérida 5101-A Venezuela
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Querido S, Weigert A, Adragão T, Henriques J, Birne R, Matias P, Jorge C, Nascimento C, Bruges M, Machado D. Intravenous Immunoglobulin and Rituximab in HLA Highly Sensitized Kidney Transplant Recipients. Transplant Proc 2018; 50:723-727. [PMID: 29661424 DOI: 10.1016/j.transproceed.2018.02.016] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
INTRODUCTION HLA-sensitized patients are penalized both in the access to kidney transplantation (KT) and, once transplanted, in the incidence of rejections and long-term allograft survival despite aggressive induction and maintenance therapy. METHODS This study retrospectively evaluates the impact of combining T- and B-cell-depleting agents and intravenous immunoglobulin for induction therapy in 45 highly sensitized KT patients (anti-panel reactive antibodies >60%, positive flow cytometry crossmatch or donor specific antibodies at the time of transplantation). The outcome data included the occurrence of biopsy-proven acute rejection, new-onset proteinuria, development of leukopenia, incidence of poliomavirus infection (BK or JC virus), fungal or bacterial infection after KT, de novo neoplasia, graft function, graft loss, or death with functioning KT. RESULTS The average panel reactive antibody was 62.5%; 41 patients (91.1%) had ≥3 HLA mismatches with the donor and 91.1% of patients had class I or II anti-HLA antibodies. Fourteen patients (31.1%) presented pre-KT donor-specific antibodies and 6 patients (13.3%) had a positive flow cytometry cross-match at the time of transplantation. The incidence of acute rejection in the first 6 months was 24.4% and the cumulative incidence was 37.8%. Two patients were diagnosed with leukopenia in the first 6 months after KT. Two patients (4.5%) had cytomegalovirus disease, 17 patients (37.8%) were diagnosed with bacterial infections. Cutaneous neoplasms were identified in 5 patients (11.1%) and solid tumors in 4 (8.9%). The death-censored graft survival was 100% in the first 6 months and 93.5% at the last evaluation. Patient survival in the same periods was 97.8% and 93.3%, respectively. CONCLUSIONS Induction immunosuppressive therapy with intravenous immunoglobulin and rituximab is effective; outcomes demonstrate an excellent patient and allograft survival and allograft function over the follow-up period.
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Affiliation(s)
- S Querido
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal.
| | - A Weigert
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - T Adragão
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - J Henriques
- Department of Pathology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - R Birne
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - P Matias
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - C Jorge
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - C Nascimento
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - M Bruges
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - D Machado
- Department of Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
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Hernandez-Montelongo J, Corrales Ureña Y, Machado D, Lancelloti M, Pinheiro M, Rischka K, Lisboa-Filho P, Cotta M. Electrostatic immobilization of antimicrobial peptides on polyethylenimine and their antibacterial effect against Staphylococcus epidermidis. Colloids Surf B Biointerfaces 2018; 164:370-378. [DOI: 10.1016/j.colsurfb.2018.02.002] [Citation(s) in RCA: 7] [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: 10/25/2017] [Revised: 01/29/2018] [Accepted: 02/02/2018] [Indexed: 12/22/2022]
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Shih R, Phillips J, Tsifansky M, Machado D, Ebraheem M, Venkata G, Sullivan K, Gupta D, Reyes K, Pietra B, Fricker F, Bleiweis M. Early Implantation of Ventricular Assisted Devices (VADs) in Failing Single Ventricle Physiology Patients Can Lead to Better Outcomes in Pediatric Heart Transplantation. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1054] [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: 11/16/2022] Open
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da Silva SGL, Terreri MT, Abad TTO, Machado D, Fonseca FLA, Hix S, Suano-Souza FI, Sarni ROS, Len CA. The effect of nutritional intervention on the lipid profile and dietary intake of adolescents with juvenile systemic lupus erythematosus: a randomized, controlled trial. Lupus 2018; 27:820-827. [DOI: 10.1177/0961203317751851] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- S G L da Silva
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - M T Terreri
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - T T O Abad
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - D Machado
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - F L A Fonseca
- Laboratory of Clinical Analysis, School of Medicine of ABC and Federal University of São Paulo, SP, Brazil
| | - S Hix
- Department of Morphology and Physiology, School of Medicine of ABC (Faculdade de Medicina do ABC), SP, Brazil
| | - F I Suano-Souza
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - R O S Sarni
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
| | - C A Len
- Department of Pediatrics, Federal University of São Paulo (Universidade Federal de São Paulo; Unifesp), São Paulo, SP, Brazil
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Gonçalves E, Sciacovelli M, Costa ASH, Tran MGB, Johnson TI, Machado D, Frezza C, Saez-Rodriguez J. Post-translational regulation of metabolism in fumarate hydratase deficient cancer cells. Metab Eng 2018; 45:149-157. [PMID: 29191787 PMCID: PMC5805855 DOI: 10.1016/j.ymben.2017.11.011] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/15/2017] [Accepted: 11/24/2017] [Indexed: 12/31/2022]
Abstract
Deregulated signal transduction and energy metabolism are hallmarks of cancer and both play a fundamental role in tumorigenesis. While it is increasingly recognised that signalling and metabolism are highly interconnected, the underpinning mechanisms of their co-regulation are still largely unknown. Here we designed and acquired proteomics, phosphoproteomics, and metabolomics experiments in fumarate hydratase (FH) deficient cells and developed a computational modelling approach to identify putative regulatory phosphorylation-sites of metabolic enzymes. We identified previously reported functionally relevant phosphosites and potentially novel regulatory residues in enzymes of the central carbon metabolism. In particular, we showed that pyruvate dehydrogenase (PDHA1) enzymatic activity is inhibited by increased phosphorylation in FH-deficient cells, restricting carbon entry from glucose to the tricarboxylic acid cycle. Moreover, we confirmed PDHA1 phosphorylation in human FH-deficient tumours. Our work provides a novel approach to investigate how post-translational modifications of enzymes regulate metabolism and could have important implications for understanding the metabolic transformation of FH-deficient cancers with potential clinical applications.
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Affiliation(s)
- Emanuel Gonçalves
- European Molecular Biology Laboratory, European Bioinformatics Institute, EMBL-EBI, Wellcome Genome Campus, Cambridge CB10 1SD, UK
| | - Marco Sciacovelli
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge CB2 0XZ, UK
| | - Ana S H Costa
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge CB2 0XZ, UK
| | - Maxine Gia Binh Tran
- UCL Division of Surgery and Interventional Science, Specialist Center for Kidney Cancer, Royal Free Hospital, Pond Street, London NW3 2QG, UK
| | - Timothy Isaac Johnson
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge CB2 0XZ, UK
| | - Daniel Machado
- European Molecular Biology Laboratory, EMBL, Heidelberg, Germany; Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Christian Frezza
- Medical Research Council Cancer Unit, University of Cambridge, Cambridge CB2 0XZ, UK.
| | - Julio Saez-Rodriguez
- RWTH Aachen University, Faculty of Medicine, Joint Research Center for Computational Biomedicine, Aachen, Germany.
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Angulo M, Machado D, Larrosa L, Biestro A. Real and spurious hypoxemia in a patient with extreme hyperleukocytosis. Med Intensiva 2017; 43:435-436. [PMID: 29233561 DOI: 10.1016/j.medin.2017.10.006] [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] [Received: 08/16/2017] [Revised: 10/09/2017] [Accepted: 10/15/2017] [Indexed: 11/16/2022]
Affiliation(s)
- M Angulo
- Cátedra de Medicina Intensiva, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
| | - D Machado
- Cátedra de Medicina Intensiva, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - L Larrosa
- Cátedra de Medicina Intensiva, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - A Biestro
- Cátedra de Medicina Intensiva, Hospital de Clínicas, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
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Cardoso J, Machado D, Ferrari R, Silva M, Berardo P, Perini J. Combined Effect of the PGR +331C > T, CYP17A1 -34A > G and CYP19A1 1531G > A Polymorphisms on the Risk of Developing Endometriosis. Rev Bras Ginecol Obstet 2017; 39:273-281. [PMID: 28614857 PMCID: PMC10309446 DOI: 10.1055/s-0037-1604097] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
Purpose To evaluate the magnitude of the association of the polymorphisms of the genes PGR, CYP17A1 and CYP19A1 in the development of endometriosis.
Methods This is a retrospective case-control study involving 161 women with endometriosis (cases) and 179 controls. The polymorphisms were genotyped by real-time polymerase chain reaction using the TaqMan system. The association of the polymorphisms with endometriosis was evaluated using the multivariate logistic regression.
Results The endometriosis patients were significantly younger than the controls (36.0 ± 7.3 versus 38.0 ± 8.5 respectively, p = 0.023), and they had a lower body mass index (26.3 ± 4.8 versus 27.9 ± 5.7 respectively, p = 0.006), higher average duration of the menstrual flow (7.4 ± 4.9 versus 6.1 ± 4.4 days respectively, p = 0.03), and lower average time intervals between menstrual periods (25.2 ± 9.6 versus 27.5 ± 11.1 days respectively, p = 0.05). A higher prevalence of symptoms of dysmenorrhea, dyspareunia, chronic pelvic pain, infertility and intestinal or urinary changes was observed in the case group when compared with the control group. The interval between the onset of symptoms and the definitive diagnosis of endometriosis was 5.2 ± 6.9 years. When comparing both groups, significant differences were not observed in the allelic and genotypic frequencies of the polymorphisms PGR +331C > T, CYP17A1 -34A > G and CYP19A1 1531G > A, even when considering the symptoms, classification and stage of the endometriosis. The combined genotype PGR +331TT/CYP17A1 -34AA/CYP19A11531AA is positively associated with endometriosis (odds ratio [OR] = 1.72; 95% confidence interval [95%CI] = 1.09–2.72).
Conclusions The combined analysis of the polymorphisms PGR-CYP17A1-CYP19A1 suggests a gene-gene interaction in the susceptibility to endometriosis. These results may contribute to the identification of biomarkers for the diagnosis and/or prognosis of the disease and of possible molecular targets for individualized treatments.
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Affiliation(s)
- Jéssica Cardoso
- Research Laboratory of Pharmaceutical Sciences, Pharmacy Unit, Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, Rio de Janeiro, Brazil
- Post-graduation in Public Health and Natural Environment Program, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (National School of Public Health, Oswaldo Cruz Foundation), Rio de Janeiro, Rio de Janeiro, Brazil
| | - Daniel Machado
- Research Laboratory of Pharmaceutical Sciences, Pharmacy Unit, Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Renato Ferrari
- Gynecology Institute, Universidade Federal do Rio de Janeiro, Hospital Moncorvo Filho, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mayara Silva
- Research Laboratory of Pharmaceutical Sciences, Pharmacy Unit, Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Plínio Berardo
- Gynecology Service, Hospital Federal dos Servidores do Estado, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jamila Perini
- Research Laboratory of Pharmaceutical Sciences, Pharmacy Unit, Centro Universitário Estadual da Zona Oeste, Rio de Janeiro, Rio de Janeiro, Brazil
- Post-graduation in Public Health and Natural Environment Program, Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (National School of Public Health, Oswaldo Cruz Foundation), Rio de Janeiro, Rio de Janeiro, Brazil
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Hernandez-Montelongo J, Lucchesi E, Nascimento V, França C, Gonzalez I, Macedo W, Machado D, Lancellotti M, Moraes A, Beppu M, Cotta M. Antibacterial and non-cytotoxic ultra-thin polyethylenimine film. Materials Science and Engineering: C 2017; 71:718-724. [DOI: 10.1016/j.msec.2016.10.064] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/28/2016] [Accepted: 10/24/2016] [Indexed: 10/20/2022]
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Monteiro JHSK, Machado D, de Hollanda LM, Lancellotti M, Sigoli FA, de Bettencourt-Dias A. Selective cytotoxicity and luminescence imaging of cancer cells with a dipicolinato-based EuIII complex. Chem Commun (Camb) 2017; 53:11818-11821. [DOI: 10.1039/c7cc06753d] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Four new lanthanide complexes with the ligand dipicNH22− (dipic = dipicolinato) show selective cancer cell toxicity and are used for cell luminescence imaging.
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Affiliation(s)
- J. H. S. K. Monteiro
- Institute of Chemistry
- University of Campinas
- Brazil
- Department of Chemistry
- University of Nevada
| | - D. Machado
- Institute of Biology
- University of Campinas
- São Paulo
- Brazil
| | | | - M. Lancellotti
- Institute of Biology
- University of Campinas
- São Paulo
- Brazil
| | - F. A. Sigoli
- Institute of Chemistry
- University of Campinas
- Brazil
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Bidviene J, Zhukovskiy N, Peritore A, Rodrigues I, Tundidor Sanz ME, Guerreiro RA, Marini C, Cereda A, Dorobantu DM, Cavalli G, Cavaliere A, Genovese D, Romeo G, Aruta P, Cucchini U, Iliceto S, Badano LP, Muraru D, Okhotin A, Privorotskaya V, De Chiara B, Musca F, Spano' F, Santambrogio G, Casadei F, Forti E, Mutignani M, Giannattasio C, Moreo A, Galrinho A, Branco L, Bravio I, Machado D, Monteiro A, Daniel P, Ferreira L, Carvalho R, Ferreira R, Tierra Rodriguez AM, Dios Diez P, Mayorga Bajo A, Fernandez Gomez MJ, Dominguez Calvo JI, Rogriguez Palomo D, Hernandez Rodriguez J, Congo K, Carvalho J, Pais J, Bras D, Picarra B, Caeiro A, Fragata J, Aguiar J, Stella S, Rosa I, Pavon AG, Ancona F, Margonato A, Colombo A, Latib A, Montorfano M, Agricola E, Casadei F, Moreo A, Ghiorghiu IA, Popescu BA, Coman IM, Ginghina CD, Enache R. Clinical Cases: See that case at least once1174An unrecognized mechanism of functional tricuspid regurgitation revealed by transthoracic three-dimensional echocardiography1175Left ventricular pseudoaneurysm after radiofrequency ablation of premature ventricular contractions1176Succesfull management of buckling of echocardiographic transesophageal probe1177An extremely rare tumor of cardiovascular system1178Pneumopericardium: a rare complication of esophageal cancer1179Left atrial dissection after myocardial infarction1180Late appearance of a ventricular septal defect after transcatheter aortic valve replacement: a rare complication1181Doppler flow velocities pattern in a trombophiliac patient with an lvad thrombosis1182An unusual cause of aortic diastolic reflux in a failed single ventricle palliation. Eur Heart J Cardiovasc Imaging 2016. [DOI: 10.1093/ehjci/jew263] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Machado D, Herrgård MJ, Rocha I. Stoichiometric Representation of Gene-Protein-Reaction Associations Leverages Constraint-Based Analysis from Reaction to Gene-Level Phenotype Prediction. PLoS Comput Biol 2016; 12:e1005140. [PMID: 27711110 PMCID: PMC5053500 DOI: 10.1371/journal.pcbi.1005140] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 09/13/2016] [Indexed: 12/05/2022] Open
Abstract
Genome-scale metabolic reconstructions are currently available for hundreds of organisms. Constraint-based modeling enables the analysis of the phenotypic landscape of these organisms, predicting the response to genetic and environmental perturbations. However, since constraint-based models can only describe the metabolic phenotype at the reaction level, understanding the mechanistic link between genotype and phenotype is still hampered by the complexity of gene-protein-reaction associations. We implement a model transformation that enables constraint-based methods to be applied at the gene level by explicitly accounting for the individual fluxes of enzymes (and subunits) encoded by each gene. We show how this can be applied to different kinds of constraint-based analysis: flux distribution prediction, gene essentiality analysis, random flux sampling, elementary mode analysis, transcriptomics data integration, and rational strain design. In each case we demonstrate how this approach can lead to improved phenotype predictions and a deeper understanding of the genotype-to-phenotype link. In particular, we show that a large fraction of reaction-based designs obtained by current strain design methods are not actually feasible, and show how our approach allows using the same methods to obtain feasible gene-based designs. We also show, by extensive comparison with experimental 13C-flux data, how simple reformulations of different simulation methods with gene-wise objective functions result in improved prediction accuracy. The model transformation proposed in this work enables existing constraint-based methods to be used at the gene level without modification. This automatically leverages phenotype analysis from reaction to gene level, improving the biological insight that can be obtained from genome-scale models.
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Affiliation(s)
- Daniel Machado
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Markus J. Herrgård
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, Horsølm, Denmark
| | - Isabel Rocha
- Centre of Biological Engineering, University of Minho, Braga, Portugal
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Monk JM, Koza A, Campodonico MA, Machado D, Seoane JM, Palsson BO, Herrgård MJ, Feist AM. Multi-omics Quantification of Species Variation of Escherichia coli Links Molecular Features with Strain Phenotypes. Cell Syst 2016; 3:238-251.e12. [PMID: 27667363 DOI: 10.1016/j.cels.2016.08.013] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [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: 11/19/2015] [Revised: 03/25/2016] [Accepted: 08/19/2016] [Indexed: 11/16/2022]
Abstract
Escherichia coli strains are widely used in academic research and biotechnology. New technologies for quantifying strain-specific differences and their underlying contributing factors promise greater understanding of how these differences significantly impact physiology, synthetic biology, metabolic engineering, and process design. Here, we quantified strain-specific differences in seven widely used strains of E. coli (BL21, C, Crooks, DH5a, K-12 MG1655, K-12 W3110, and W) using genomics, phenomics, transcriptomics, and genome-scale modeling. Metabolic physiology and gene expression varied widely with downstream implications for productivity, product yield, and titer. These differences could be linked to differential regulatory structure. Analyzing high-flux reactions and expression of encoding genes resulted in a correlated and quantitative link between these sets, with strain-specific caveats. Integrated modeling revealed that certain strains are better suited to produce given compounds or express desired constructs considering native expression states of pathways that enable high-production phenotypes. This study yields a framework for quantitatively comparing strains in a species with implications for strain selection.
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Affiliation(s)
- Jonathan M Monk
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Anna Koza
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark
| | - Miguel A Campodonico
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0412, USA; Centre for Biotechnology and Bioengineering, CeBiB, University of Chile, Beauchef 850, Santiago, Chile
| | - Daniel Machado
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark
| | - Jose Miguel Seoane
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark
| | - Bernhard O Palsson
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark; Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0412, USA
| | - Markus J Herrgård
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark
| | - Adam M Feist
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2970 Hørsholm, Denmark; Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0412, USA.
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Bergamini F, Ribeiro M, Lancellotti M, Machado D, Miranda P, Cuin A, Formiga A, Corbi P. Synthesis, spectroscopic characterizations, crystal structures and DFT studies of nalidixic acid carbonyl hydrazones derivatives. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.05.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Kahl L, Patel J, Layton M, Binks M, Hicks K, Leon G, Hachulla E, Machado D, Staumont-Sallé D, Dickson M, Condreay L, Schifano L, Zamuner S, van Vollenhoven RF. Safety, tolerability, efficacy and pharmacodynamics of the selective JAK1 inhibitor GSK2586184 in patients with systemic lupus erythematosus. Lupus 2016; 25:1420-1430. [PMID: 27055521 DOI: 10.1177/0961203316640910] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We aimed to evaluate the pharmacodynamics, efficacy, safety and tolerability of the JAK1 inhibitor GSK2586184 in adults with systemic lupus erythematosus (SLE). In this adaptive, randomized, double-blind, placebo-controlled study, patients received oral GSK2586184 50-400 mg, or placebo twice daily for 12 weeks. Primary endpoints included interferon-mediated messenger RNA transcription over time, changes in Safety of Estrogen in Lupus National Assessment-SLE Disease Activity Index score, and number/severity of adverse events. A pre-specified interim analysis was performed when ≥ 5 patients per group completed 2 weeks of treatment. In total, 84-92% of patients were high baseline expressors of the interferon transcriptional biomarkers evaluated. At interim analysis, GSK2586184 showed no significant effect on mean interferon transcriptional biomarker expression (all panels). The study was declared futile and recruitment was halted at 50 patients. Shortly thereafter, significant safety data were identified, including elevated liver enzymes in six patients (one confirmed and one suspected case of Drug Reaction with Eosinophilia and Systemic Symptoms), leading to immediate dosing cessation. Safety of Estrogen in Lupus National Assessment-SLE Disease Activity Index scores were not analysed due to the small number of patients completing the study. The study futility and safety data described for GSK2586184 do not support further evaluation in patients with SLE. Study identifiers: GSK Study JAK115919; ClinicalTrials.gov identifier: NCT01777256.
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Affiliation(s)
- L Kahl
- 1 Clinical Development in Infectious Diseases, GSK, Uxbridge, UK
| | - J Patel
- 2 Immuno-Inflammation Therapeutic Area Unit, GSK, Stevenage, UK
| | - M Layton
- 2 Immuno-Inflammation Therapeutic Area Unit, GSK, Stevenage, UK
| | - M Binks
- 3 Worldwide Research and Development, Pfizer Inc., Cambridge, MA, USA
| | - K Hicks
- 4 Clinical Statistics Medicines Research Centre, GSK, Stevenage, UK
| | - G Leon
- 5 Instituto de Ginecologia y Reproduccion, Lima, Peru
| | - E Hachulla
- 6 Claude Huriez Hospital, University of Lille, FHU IMMINeNT, Lille, France
| | - D Machado
- 7 Instituto Centralizado de Asistencia e Investigacion Clinica Integral, CAICI, Rosario, Santa Fe, Argentina
| | - D Staumont-Sallé
- 6 Claude Huriez Hospital, University of Lille, FHU IMMINeNT, Lille, France
| | - M Dickson
- 2 Immuno-Inflammation Therapeutic Area Unit, GSK, Stevenage, UK
| | | | | | - S Zamuner
- 9 Clinical Pharmacology Modelling and Simulation Department, GSK, Uxbridge, UK
| | - R F van Vollenhoven
- 10 Unit for Clinical Therapy Research, Inflammatory Diseases (ClinTRID), The Karolinska Institute, Stockholm, Sweden
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Hong MK, Wilcox L, Machado D, Olson TA, Simoneaux SF. Care Partnerships: Toward Technology to Support Teens' Participation in Their Health Care. Proc SIGCHI Conf Hum Factor Comput Syst 2016; 2016:5337-5349. [PMID: 28164178 PMCID: PMC5291175 DOI: 10.1145/2858036.2858508] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Adolescents with complex chronic illnesses, such as cancer and blood disorders, must partner with family and clinical caregivers to navigate risky procedures with life-altering implications, burdensome symptoms and lifelong treatments. Yet, there has been little investigation into how technology can support these partnerships. We conducted 38 in-depth interviews (15 with teenage adolescents with chronic forms of cancer and blood disorders, 15 with their parents, and eight with clinical caregivers) along with nine non-participant observations of clinical consultations to better understand common challenges and needs that could be supported through design. Participants faced challenges primarily concerning: 1) teens' limited participation in their care, 2) communicating emotionally-sensitive information, and 3) managing physical and emotional responses. We draw on these findings to propose design goals for sociotechnical systems to support teens in partnering in their care, highlighting the need for design to support gradually evolving partnerships in care.
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Affiliation(s)
- Matthew K Hong
- School of Interactive Computing, College of Computing, Georgia Institute of Technology
| | - Lauren Wilcox
- School of Interactive Computing, College of Computing, Georgia Institute of Technology
| | - Daniel Machado
- School of Interactive Computing, College of Computing, Georgia Institute of Technology
| | - Thomas A Olson
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University School of Medicine
| | - Stephen F Simoneaux
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University School of Medicine
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Querido S, Machado D, Silva C, Nolasco F, Nunes A, Sampaio S, Cruz P, Oliveira C, Weigert A. Renal Transplantation in HIV-Infected Patients: The First Portuguese Review. Transplant Proc 2016; 47:946-9. [PMID: 26036491 DOI: 10.1016/j.transproceed.2015.03.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION With the introduction of combination antiretroviral therapy (cART), prognosis of human immunodeficiency virus (HIV) infection has been improved and kidney transplantation (KT) in HIV-positive patients became possible. METHODS We reviewed the demographic, clinical, laboratory, and therapeutic data of all the HIV-infected patients who underwent KT between 2009 (first KT in Portugal in a HIV-infected patient) and May 2014. Case accrual was through all Portuguese KT centers where a KT in an HIV-infected patient was performed. Patients were transplanted following the American and Spanish guideline recommendations that included maintenance on cART, undetectable plasma HIV RNA copies, and absolute CD4 counts of ≥ 200 cells/μL in the last 6 months. RESULTS Fourteen KT were performed on men and 3 on women. The mean age of patients at the time of transplantation was 49.9 ± 11.7 years. HIV status was known for 12 ± 5 years. Eight patients had AIDS in the past and all patients received grafts from deceased donors. Twelve patients (64.7%) underwent induction therapy with basiliximab and 2 patients experienced early graft loss. In 2 patients, humoral rejection was diagnosed and in 3 patients, cellular rejection. Two patients died and an additional patient had early graft loss. CONCLUSION KT is a possible, but challenging, renal replacement therapy in selected HIV-positive patients. Even in those with AIDS criteria in the past, when the disease is controlled, and after the reconstitution of the immune system with cART, KT can be performed. Nevertheless, the risk-benefit ratio for each patient needs to be taken in consideration.
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Affiliation(s)
- S Querido
- Nephrology, Centro Hospitalar do Médio Tejo, Torres Novas, Portugal.
| | - D Machado
- Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
| | - C Silva
- Nephrology, Centro Hospitalar de Lisboa Central, Hospital Curry Cabral, Lisboa, Portugal
| | - F Nolasco
- Nephrology, Centro Hospitalar de Lisboa Central, Hospital Curry Cabral, Lisboa, Portugal
| | - A Nunes
- Nephrology, Hospital de São João, Porto, Portugal
| | - S Sampaio
- Nephrology, Hospital de São João, Porto, Portugal
| | - P Cruz
- Nephrology, Hospital Garcia de Orta, Almada, Portugal
| | - C Oliveira
- Nephrology, Hospital Garcia de Orta, Almada, Portugal
| | - A Weigert
- Nephrology, Centro Hospitalar de Lisboa Ocidental, Hospital de Santa Cruz, Carnaxide, Portugal
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Machado D, Zhuang KH, Sonnenschein N, Herrgård MJ. Editorial: Current Challenges in Modeling Cellular Metabolism. Front Bioeng Biotechnol 2015; 3:193. [PMID: 26636080 PMCID: PMC4659907 DOI: 10.3389/fbioe.2015.00193] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 11/09/2015] [Indexed: 11/13/2022] Open
Affiliation(s)
- Daniel Machado
- Centre of Biological Engineering, University of Minho , Braga , Portugal
| | - Kai H Zhuang
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark , Hørsholm , Denmark
| | - Nikolaus Sonnenschein
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark , Hørsholm , Denmark
| | - Markus J Herrgård
- The Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark , Hørsholm , Denmark
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