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Liyanaarachchi VC, Nishshanka GKSH, Nimarshana PHV, Chang JS, Ariyadasa TU, Nagarajan D. Modeling of astaxanthin biosynthesis via machine learning, mathematical and metabolic network modeling. Crit Rev Biotechnol 2024; 44:996-1017. [PMID: 37587012 DOI: 10.1080/07388551.2023.2237183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/04/2023] [Accepted: 06/17/2023] [Indexed: 08/18/2023]
Abstract
Natural astaxanthin is synthesized by diverse organisms including: bacteria, fungi, microalgae, and plants involving complex cellular processes, which depend on numerous interrelated parameters. Nonetheless, existing knowledge regarding astaxanthin biosynthesis and the conditions influencing astaxanthin accumulation is fairly limited. Thus, manipulation of the growth conditions to achieve desired biomass and astaxanthin yields can be a complicated process requiring cost-intensive and time-consuming experiment-based research. As a potential solution, modeling and simulation of biological systems have recently emerged, allowing researchers to predict/estimate astaxanthin production dynamics in selected organisms. Moreover, mathematical modeling techniques would enable further optimization of astaxanthin synthesis in a shorter period of time, ultimately contributing to a notable reduction in production costs. Thus, the present review comprehensively discusses existing mathematical modeling techniques which simulate the bioaccumulation of astaxanthin in diverse organisms. Associated challenges, solutions, and future perspectives are critically analyzed and presented.
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Affiliation(s)
| | | | - P H Viraj Nimarshana
- Department of Mechanical Engineering, Faculty of Engineering, University of Moratuwa, Moratuwa, Sri Lanka
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
- Department of Chemical and Materials Engineering, Tunghai University, Taichung, Taiwan
- Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung, Taiwan
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Chung-Li, Taiwan
| | - Thilini U Ariyadasa
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Moratuwa, Moratuwa, Sri Lanka
| | - Dillirani Nagarajan
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
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2
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Bianca C. A decade of thermostatted kinetic theory models for complex active matter living systems. Phys Life Rev 2024; 50:72-97. [PMID: 39002422 DOI: 10.1016/j.plrev.2024.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Accepted: 06/24/2024] [Indexed: 07/15/2024]
Abstract
In the last decade, the thermostatted kinetic theory has been proposed as a general paradigm for the modeling of complex systems of the active matter and, in particular, in biology. Homogeneous and inhomogeneous frameworks of the thermostatted kinetic theory have been employed for modeling phenomena that are the result of interactions among the elements, called active particles, composing the system. Functional subsystems contain heterogeneous active particles that are able to perform the same task, called activity. Active matter living systems usually operate out-of-equilibrium; accordingly, a mathematical thermostat is introduced in order to regulate the fluctuations of the activity of particles. The time evolution of the functional subsystems is obtained by introducing the conservative and the nonconservative interactions which represent activity-transition, natural birth/death, induced proliferation/destruction, and mutation of the active particles. This review paper is divided in two parts: In the first part the review deals with the mathematical frameworks of the thermostatted kinetic theory that can be found in the literature of the last decade and a unified approach is proposed; the second part of the review is devoted to the specific mathematical models derived within the thermostatted kinetic theory presented in the last decade for complex biological systems, such as wound healing diseases, the recognition process and the learning dynamics of the human immune system, the hiding-learning dynamics and the immunoediting process occurring during the cancer-immune system competition. Future research perspectives are discussed from the theoretical and application viewpoints, which suggest the important interplay among the different scholars of the applied sciences and the desire of a multidisciplinary approach or rather a theory for the modeling of every active matter system.
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Affiliation(s)
- Carlo Bianca
- EFREI Research Lab, Université Paris-Panthéon-Assas, 30/32 Avenue de la République, 94800 Villejuif, France.
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3
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Lange E, Kranert L, Krüger J, Benndorf D, Heyer R. Microbiome modeling: a beginner's guide. Front Microbiol 2024; 15:1368377. [PMID: 38962127 PMCID: PMC11220171 DOI: 10.3389/fmicb.2024.1368377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 05/27/2024] [Indexed: 07/05/2024] Open
Abstract
Microbiomes, comprised of diverse microbial species and viruses, play pivotal roles in human health, environmental processes, and biotechnological applications and interact with each other, their environment, and hosts via ecological interactions. Our understanding of microbiomes is still limited and hampered by their complexity. A concept improving this understanding is systems biology, which focuses on the holistic description of biological systems utilizing experimental and computational methods. An important set of such experimental methods are metaomics methods which analyze microbiomes and output lists of molecular features. These lists of data are integrated, interpreted, and compiled into computational microbiome models, to predict, optimize, and control microbiome behavior. There exists a gap in understanding between microbiologists and modelers/bioinformaticians, stemming from a lack of interdisciplinary knowledge. This knowledge gap hinders the establishment of computational models in microbiome analysis. This review aims to bridge this gap and is tailored for microbiologists, researchers new to microbiome modeling, and bioinformaticians. To achieve this goal, it provides an interdisciplinary overview of microbiome modeling, starting with fundamental knowledge of microbiomes, metaomics methods, common modeling formalisms, and how models facilitate microbiome control. It concludes with guidelines and repositories for modeling. Each section provides entry-level information, example applications, and important references, serving as a valuable resource for comprehending and navigating the complex landscape of microbiome research and modeling.
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Affiliation(s)
- Emanuel Lange
- Multidimensional Omics Data Analysis, Department for Bioanalytics, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
- Graduate School Digital Infrastructure for the Life Sciences, Bielefeld Institute for Bioinformatics Infrastructure (BIBI), Faculty of Technology, Bielefeld University, Bielefeld, Germany
| | - Lena Kranert
- Institute for Automation Engineering, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Jacob Krüger
- Engineering of Software-Intensive Systems, Department of Mathematics and Computer Science, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Dirk Benndorf
- Applied Biosciences and Bioprocess Engineering, Anhalt University of Applied Sciences, Köthen, Germany
| | - Robert Heyer
- Multidimensional Omics Data Analysis, Department for Bioanalytics, Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
- Graduate School Digital Infrastructure for the Life Sciences, Bielefeld Institute for Bioinformatics Infrastructure (BIBI), Faculty of Technology, Bielefeld University, Bielefeld, Germany
- Multidimensional Omics Data Analysis, Faculty of Technology, Bielefeld University, Bielefeld, Germany
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4
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Rodríguez-Abreo O, Cruz-Fernandez M, Fuentes-Silva C, Quiroz-Juárez MA, Aragón JL. Modeling the Electrical Activity of the Heart via Transfer Functions and Genetic Algorithms. Biomimetics (Basel) 2024; 9:300. [PMID: 38786509 PMCID: PMC11118079 DOI: 10.3390/biomimetics9050300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/25/2024] Open
Abstract
Although healthcare and medical technology have advanced significantly over the past few decades, heart disease continues to be a major cause of mortality globally. Electrocardiography (ECG) is one of the most widely used tools for the detection of heart diseases. This study presents a mathematical model based on transfer functions that allows for the exploration and optimization of heart dynamics in Laplace space using a genetic algorithm (GA). The transfer function parameters were fine-tuned using the GA, with clinical ECG records serving as reference signals. The proposed model, which is based on polynomials and delays, approximates a real ECG with a root-mean-square error of 4.7% and an R2 value of 0.72. The model achieves the periodic nature of an ECG signal by using a single periodic impulse input. Its simplicity makes it possible to adjust waveform parameters with a predetermined understanding of their effects, which can be used to generate both arrhythmic patterns and healthy signals. This is a notable advantage over other models that are burdened by a large number of differential equations and many parameters.
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Affiliation(s)
- Omar Rodríguez-Abreo
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Santiago de Querétaro 76230, Mexico;
| | - Mayra Cruz-Fernandez
- Division de Tecnologías Industriales, Universidad Politécnica de Querétaro, Santiago de Querétaro 76240, Mexico (C.F.-S.)
| | - Carlos Fuentes-Silva
- Division de Tecnologías Industriales, Universidad Politécnica de Querétaro, Santiago de Querétaro 76240, Mexico (C.F.-S.)
| | - Mario A. Quiroz-Juárez
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Santiago de Querétaro 76230, Mexico;
| | - José L. Aragón
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México, Santiago de Querétaro 76230, Mexico;
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Chu C, Low YLC, Ma L, Wang Y, Cox T, Doré V, Masters CL, Goudey B, Jin L, Pan Y. How Can We Use Mathematical Modeling of Amyloid-β in Alzheimer's Disease Research and Clinical Practices? J Alzheimers Dis 2024; 97:89-100. [PMID: 38007665 DOI: 10.3233/jad-230938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
The accumulation of amyloid-β (Aβ) plaques in the brain is considered a hallmark of Alzheimer's disease (AD). Mathematical modeling, capable of predicting the motion and accumulation of Aβ, has obtained increasing interest as a potential alternative to aid the diagnosis of AD and predict disease prognosis. These mathematical models have provided insights into the pathogenesis and progression of AD that are difficult to obtain through experimental studies alone. Mathematical modeling can also simulate the effects of therapeutics on brain Aβ levels, thereby holding potential for drug efficacy simulation and the optimization of personalized treatment approaches. In this review, we provide an overview of the mathematical models that have been used to simulate brain levels of Aβ (oligomers, protofibrils, and/or plaques). We classify the models into five categories: the general ordinary differential equation models, the general partial differential equation models, the network models, the linear optimal ordinary differential equation models, and the modified partial differential equation models (i.e., Smoluchowski equation models). The assumptions, advantages and limitations of these models are discussed. Given the popularity of using the Smoluchowski equation models to simulate brain levels of Aβ, our review summarizes the history and major advancements in these models (e.g., their application to predict the onset of AD and their combined use with network models). This review is intended to bring mathematical modeling to the attention of more scientists and clinical researchers working on AD to promote cross-disciplinary research.
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Affiliation(s)
- Chenyin Chu
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Yi Ling Clare Low
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Liwei Ma
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Yihan Wang
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Timothy Cox
- The Australian e-Health Research Centre, CSIRO, Parkville, Victoria, Australia
| | - Vincent Doré
- The Australian e-Health Research Centre, CSIRO, Parkville, Victoria, Australia
| | - Colin L Masters
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
| | - Benjamin Goudey
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
- ARC Training Centre in Cognitive Computing for Medical Technologies, University of Melbourne, Carlton, Victoria, Australia
| | - Liang Jin
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Yijun Pan
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, Victoria, Australia
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Department of Organ Anatomy, Graduate School of Medicine, Tohoku University, Sendai, Miyagi, Japan
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6
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Liu J, Dan W, Liu X, Zhong X, Chen C, He Q, Wang J. Development and validation of predictive model based on deep learning method for classification of dyslipidemia in Chinese medicine. Health Inf Sci Syst 2023; 11:21. [PMID: 37035723 PMCID: PMC10079798 DOI: 10.1007/s13755-023-00215-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 02/20/2023] [Indexed: 04/11/2023] Open
Abstract
Backgrounds Dyslipidemia is a prominent risk factor for cardiovascular diseases and one of the primary independent modifiable factors of diabetes and stroke. Statins can significantly improve the prognosis of dyslipidemia, but its side effects cannot be ignored. Traditional Chinese Medicine (TCM) has been used in clinical practice for more than 2000 years in China and has certain traits in treating dyslipidemia with little side effect. Previous research has shown that Mutual Obstruction of Phlegm and Stasis (MOPS) is the most common dyslipidemia type classified in TCM. However, how to compose diagnostic factors in TCM into diagnostic rules relies heavily on the doctor's experience, falling short in standardization and objectiveness. This is a limit for TCM to play its advantages of treating dyslipidemia with MOPS. Methods In this study, the syndrome diagnosis in TCM was transformed into the prediction and classification problem in artificial intelligence The deep learning method was employed to build the classification prediction models for dyslipidemia. The models were built and trained with a large amount of multi-centered clinical data on MOPS. The optimal model was screened out by evaluating the performance of prediction models through loss, accuracy, precision, recall, confusion matrix, PR and ROC curve (including AUC). Results A total of 20 models were constructed through the deep learning method. All of them performed well in the prediction of dyslipidemia with MOPS. The model-11 is the optimal model. The evaluation indicators of model-11 are as follows: The true positive (TP), false positive (FP), true negative (TN) and false negative (FN) are 51, 15, 129, and 9, respectively. The loss is 0.3241, accuracy is 0.8672, precision is 0.7138, recall is 0.8286, and the AUC is 0.9268. After screening through 89 diagnostic factors of TCM, we identified 36 significant diagnosis factors for dyslipidemia with MOPS. The most outstanding diagnostic factors from the importance were dark purple tongue, slippery pulse and slimy fur, etc. Conclusions This study successfully developed a well-performing classification prediction model for dyslipidemia with MOPS, transforming the syndrome diagnosis problem in TCM into a prediction and classification problem in artificial intelligence. Patients with dyslipidemia of MOPS can be accurately recognized through limited information from patients. We also screened out significant diagnostic factors for composing diagnostic rules of dyslipidemia with MOPS. The study is an avant-garde attempt at introducing the deep-learning method into the research of TCM, which provides a useful reference for the extension of deep learning method to other diseases and the construction of disease diagnosis model in TCM, contributing to the standardization and objectiveness of TCM diagnosis.
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Affiliation(s)
- Jinlei Liu
- Department of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 10053 China
| | - Wenchao Dan
- Dermatological Department, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010 China
- Beijing University of Chinese Medicine, Beijing, 100029 China
| | - Xudong Liu
- Beijing University of Chinese Medicine, Beijing, 100029 China
| | - Xiaoxue Zhong
- Beijing University of Chinese Medicine, Beijing, 100029 China
| | - Cheng Chen
- Xi’an Jiaotong University, Xi’an, 710049 China
| | - Qingyong He
- Department of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 10053 China
| | - Jie Wang
- Department of Cardiology, Guang’anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, 10053 China
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7
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Martínez-Castillo L, González-Ramírez C, Cortazar-Martínez A, González-Reyes J, Otazo-Sánchez E, Villagómez-Ibarra J, Velázquez-Jiménez R, Vázquez-Cuevas G, Madariaga-Navarrete A, Acevedo-Sandoval O, Romo-Gómez C. Mathematical modeling for operative improvement of the decoloration of Acid Red 27 by a novel microbial consortium of Trametes versicolor and Pseudomonas putida: A multivariate sensitivity analysis. Heliyon 2023; 9:e21793. [PMID: 38027625 PMCID: PMC10661207 DOI: 10.1016/j.heliyon.2023.e21793] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/14/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
In this work, it is presented a first approach of a mathematical and kinetic analysis for improving the decoloration and further degradation process of an azo dye named acid red 27 (AR27), by means of a novel microbial consortium formed by the fungus Trametes versicolor and the bacterium Pseudomonas putida. A multivariate analysis was carried out by simulating scenarios with different operating conditions and developing a specific mathematical model based on kinetic equations describing all stages of the biological process, from microbial growth and substrate consuming to decoloration and degradation of intermediate compounds. Additionally, a sensitivity analysis was performed by using a factorial design and the Response Surface Method (RSM), for determining individual and interactive effects of variables like, initial glucose concentration, initial dye concentration and the moment in time for bacterial inoculation, on response variables assessed in terms of the minimum time for: full decoloration of AR27 (R1 = 2.375 days); maximum production of aromatic metabolites (R2 = 1.575 days); and full depletion of aromatic metabolites (R3 = 12.9 days). Using RSM the following conditions improved the biological process, being: an initial glucose concentration of 20 g l-1, an initial AR27 concentration of 0.2 g l-1 and an inoculation moment in time of P. putida at day 1. The mathematical model is a feasible tool for describing AR27 decoloration and its further degradation by the microbial consortium of T. versicolor and P. putida, this model will also work as a mathematical basis for designing novel bio-reaction systems than can operate with the same principle of the described consortium.
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Affiliation(s)
- L.A. Martínez-Castillo
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - C.A. González-Ramírez
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - A. Cortazar-Martínez
- Universidad Autónoma del Estado de Hidalgo, Escuela Superior de Apan, Carr. Apan-Calpulalpan, S/N, Col. Chimalpa Tlalayote, Apan, Hidalgo, C.P. 43920, Mexico
| | - J.R. González-Reyes
- Investigación Aplicada al Bienestar Social y Ambiental (INABISA), A.C., Río Papagayo S/N, Col. Amp. El Palmar, Pachuca, Hidalgo, C.P. 42088, Mexico
| | - E.M. Otazo-Sánchez
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - J.R. Villagómez-Ibarra
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - R. Velázquez-Jiménez
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - G.M. Vázquez-Cuevas
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - A. Madariaga-Navarrete
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Ciencias Agrícolas y Forestales, Instituto de Ciencias Agropecuarias, Carr. Tulancingo-Santiago Tulantepec S/N, Tulancingo, Hidalgo, C.P. 43600, Mexico
| | - O.A. Acevedo-Sandoval
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
| | - C. Romo-Gómez
- Universidad Autónoma del Estado de Hidalgo, Área Académica de Química, Instituto de Ciencias Básicas e Ingeniería, Carr. Pachuca-Tulancingo km. 4.5, Col. Carboneras, Mineral de la Reforma, Hidalgo, C.P. 42184, Mexico
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Haus ES, Drengstig T, Thorsen K. Structural identifiability of biomolecular controller motifs with and without flow measurements as model output. PLoS Comput Biol 2023; 19:e1011398. [PMID: 37639454 PMCID: PMC10491402 DOI: 10.1371/journal.pcbi.1011398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 09/08/2023] [Accepted: 07/28/2023] [Indexed: 08/31/2023] Open
Abstract
Controller motifs are simple biomolecular reaction networks with negative feedback. They can explain how regulatory function is achieved and are often used as building blocks in mathematical models of biological systems. In this paper we perform an extensive investigation into structural identifiability of controller motifs, specifically the so-called basic and antithetic controller motifs. Structural identifiability analysis is a useful tool in the creation and evaluation of mathematical models: it can be used to ensure that model parameters can be determined uniquely and to examine which measurements are necessary for this purpose. This is especially useful for biological models where parameter estimation can be difficult due to limited availability of measureable outputs. Our aim with this work is to investigate how structural identifiability is affected by controller motif complexity and choice of measurements. To increase the number of potential outputs we propose two methods for including flow measurements and show how this affects structural identifiability in combination with, or in the absence of, concentration measurements. In our investigation, we analyze 128 different controller motif structures using a combination of flow and/or concentration measurements, giving a total of 3648 instances. Among all instances, 34% of the measurement combinations provided structural identifiability. Our main findings for the controller motifs include: i) a single measurement is insufficient for structural identifiability, ii) measurements related to different chemical species are necessary for structural identifiability. Applying these findings result in a reduced subset of 1568 instances, where 80% are structurally identifiable, and more complex/interconnected motifs appear easier to structurally identify. The model structures we have investigated are commonly used in models of biological systems, and our results demonstrate how different model structures and measurement combinations affect structural identifiability of controller motifs.
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Affiliation(s)
- Eivind S. Haus
- Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
| | - Tormod Drengstig
- Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
| | - Kristian Thorsen
- Department of Electrical Engineering and Computer Science, University of Stavanger, Stavanger, Norway
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9
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Uleman JF, Mancini E, Al-Shama RF, te Velde AA, Kraneveld AD, Castiglione F. A multiscale hybrid model for exploring the effect of Resolvin D1 on macrophage polarization during acute inflammation. Math Biosci 2023; 359:108997. [PMID: 36996999 DOI: 10.1016/j.mbs.2023.108997] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023]
Abstract
Dysregulated inflammation underlies various diseases. Specialized pro-resolving mediators (SPMs) like Resolvin D1 (RvD1) have been shown to resolve inflammation and halt disease progression. Macrophages, key immune cells that drive inflammation, respond to the presence of RvD1 by polarizing to an anti-inflammatory type (M2). However, RvD1's mechanisms, roles, and utility are not fully understood. This paper introduces a gene-regulatory network (GRN) model that contains pathways for RvD1 and other SPMs and proinflammatory molecules like lipopolysaccharides. We couple this GRN model to a partial differential equation - agent-based hybrid model using a multiscale framework to simulate an acute inflammatory response with and without the presence of RvD1. We calibrate and validate the model using experimental data from two animal models. The model reproduces the dynamics of key immune components and the effects of RvD1 during acute inflammation. Our results suggest RvD1 can drive macrophage polarization through the G protein-coupled receptor 32 (GRP32) pathway. The presence of RvD1 leads to an earlier and increased M2 polarization, reduced neutrophil recruitment, and faster apoptotic neutrophil clearance. These results support a body of literature that suggests that RvD1 is a promising candidate for promoting the resolution of acute inflammation. We conclude that once calibrated and validated on human data, the model can identify critical sources of uncertainty, which could be further elucidated in biological experiments and assessed for clinical use.
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Sheikh K, Sayeed S, Asif A, Siddiqui MF, Rafeeq MM, Sahu A, Ahmad S. Consequential Innovations in Nature-Inspired Intelligent Computing Techniques for Biomarkers and Potential Therapeutics Identification. NATURE-INSPIRED INTELLIGENT COMPUTING TECHNIQUES IN BIOINFORMATICS 2023:247-274. [DOI: 10.1007/978-981-19-6379-7_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
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11
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Mc Auley MT. Dietary restriction and ageing: Recent evolutionary perspectives. Mech Ageing Dev 2022; 208:111741. [PMID: 36167215 DOI: 10.1016/j.mad.2022.111741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 09/07/2022] [Accepted: 09/22/2022] [Indexed: 12/30/2022]
Abstract
Dietary restriction (DR) represents one of the most robust interventions for extending lifespan. It is not known how DR increases lifespan. The prevailing evolutionary hypothesis suggests the DR response redirects metabolic resources towards somatic maintenance at the expense of investment in reproduction. Consequently, DR acts as a proximate mechanism which promotes a pro-longevity phenotype. This idea is known as resource reallocation. However, growing findings suggest this paradigm could be incomplete. It has been argued that during DR it is not always possible to identify a trade-off between reproduction and lifespan. It is also suggested the relationship between reproduction and somatic maintenance can be uncoupled by the removal or inclusion of specific nutrients. These findings have created an imperative to re-explore the nexus between DR and evolutionary theory. In this review I will address this evolutionary conundrum. My overarching objectives are fourfold: (1) to outline some of the evidence for and against resource reallocation; (2) to examine recent findings which have necessitated a theoretical re-evaluation of the link between life history theory and DR; (3) to present alternatives to the resource reallocation model; (4) to present emerging variables which potentially influence how DR effects evolutionary trade-offs.
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Affiliation(s)
- Mark T Mc Auley
- Faculty of Science and Engineering, Thornton Science Park, University of Chester, Parkgate Road, Chester CH1 4BJ, UK.
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12
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Optimizing the production of docosahexaenoic fatty acid by Crypthecodinium cohnii and reduction in process cost by using a dark fermentation effluent. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Chakraborty C, Bhattacharya M, Sharma AR, Dhama K, Lee SS. Continent-wide evolutionary trends of emerging SARS-CoV-2 variants: dynamic profiles from Alpha to Omicron. GeroScience 2022; 44:2371-2392. [PMID: 35831773 PMCID: PMC9281186 DOI: 10.1007/s11357-022-00619-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 06/27/2022] [Indexed: 01/06/2023] Open
Abstract
The ongoing SARS-CoV-2 evolution process has generated several variants due to its continuous mutations, making pandemics more critical. The present study illustrates SARS-CoV-2 evolution and its emerging mutations in five directions. First, the significant mutations in the genome and S-glycoprotein were analyzed in different variants. Three linear models were developed with the regression line to depict the mutational load for S-glycoprotein, total genome excluding S-glycoprotein, and whole genome. Second, the continent-wide evolution of SARS-CoV-2 and its variants with their clades and divergence were evaluated. It showed the region-wise evolution of the SARS-CoV-2 variants and their clustering event. The major clades for each variant were identified. One example is clade 21K, a major clade of the Omicron variant. Third, lineage dynamics and comparison between SARS-CoV-2 lineages across different countries are also illustrated, demonstrating dominant variants in various countries over time. Fourth, gene-wise mutation patterns and genetic variability of SARS-CoV-2 variants across various countries are illustrated. High mutation patterns were found in the ORF10, ORF6, S, and low mutation pattern E genes. Finally, emerging AA point mutations (T478K, L452R, N501Y, S477N, E484A, Q498R, and Y505H), their frequencies, and country-wise occurrence were identified, and the highest event of two mutations (T478K and L452R) was observed.
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Affiliation(s)
- Chiranjib Chakraborty
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal 700126 India
| | - Manojit Bhattacharya
- Department of Zoology, Fakir Mohan University, Vyasa Vihar, Balasore, 756020 Odisha India
| | - Ashish Ranjan Sharma
- Institute for Skeletal Aging & Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital, Chuncheon-si, 24252 Gangwon-do Republic of Korea
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122 Uttar Pradesh India
| | - Sang-Soo Lee
- Institute for Skeletal Aging & Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital, Chuncheon-si, 24252 Gangwon-do Republic of Korea
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14
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Bekisz S, Baudin L, Buntinx F, Noël A, Geris L. In Vitro, In Vivo, and In Silico Models of Lymphangiogenesis in Solid Malignancies. Cancers (Basel) 2022; 14:1525. [PMID: 35326676 PMCID: PMC8946816 DOI: 10.3390/cancers14061525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/24/2022] [Accepted: 03/08/2022] [Indexed: 12/04/2022] Open
Abstract
Lymphangiogenesis (LA) is the formation of new lymphatic vessels by lymphatic endothelial cells (LECs) sprouting from pre-existing lymphatic vessels. It is increasingly recognized as being involved in many diseases, such as in cancer and secondary lymphedema, which most often results from cancer treatments. For some cancers, excessive LA is associated with cancer progression and metastatic dissemination to the lymph nodes (LNs) through lymphatic vessels. The study of LA through in vitro, in vivo, and, more recently, in silico models is of paramount importance in providing novel insights and identifying the key molecular actors in the biological dysregulation of this process under pathological conditions. In this review, the different biological (in vitro and in vivo) models of LA, especially in a cancer context, are explained and discussed, highlighting their principal modeled features as well as their advantages and drawbacks. Imaging techniques of the lymphatics, complementary or even essential to in vivo models, are also clarified and allow the establishment of the link with computational approaches. In silico models are introduced, theoretically described, and illustrated with examples specific to the lymphatic system and the LA. Together, these models constitute a toolbox allowing the LA research to be brought to the next level.
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Affiliation(s)
- Sophie Bekisz
- Biomechanics Research Unit, GIGA In silico Medicine, ULiège, 4000 Liège, Belgium;
| | - Louis Baudin
- Laboratory of Biology of Tumor and Development, GIGA Cancer, ULiège, 4000 Liège, Belgium; (L.B.); (F.B.); (A.N.)
| | - Florence Buntinx
- Laboratory of Biology of Tumor and Development, GIGA Cancer, ULiège, 4000 Liège, Belgium; (L.B.); (F.B.); (A.N.)
| | - Agnès Noël
- Laboratory of Biology of Tumor and Development, GIGA Cancer, ULiège, 4000 Liège, Belgium; (L.B.); (F.B.); (A.N.)
| | - Liesbet Geris
- Biomechanics Research Unit, GIGA In silico Medicine, ULiège, 4000 Liège, Belgium;
- Biomechanics Section, KU Leuven, 3000 Leuven, Belgium
- Skeletal Biology and Engineering Research Center, KU Leuven, 3000 Leuven, Belgium
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15
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Oke AS, Bada OI, Rasaq G, Adodo V. Mathematical analysis of the dynamics of COVID-19 in Africa under the influence of asymptomatic cases and re-infection. MATHEMATICAL METHODS IN THE APPLIED SCIENCES 2022; 45:137-149. [PMID: 34908633 PMCID: PMC8661808 DOI: 10.1002/mma.7769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 07/26/2021] [Accepted: 08/07/2021] [Indexed: 06/14/2023]
Abstract
Coronavirus pandemic (COVID-19) hit the world in December 2019, and only less than 5% of the 15 million cases were recorded in Africa. A major call for concern was the significant rise from 2% in May 2020 to 4.67% by the end of July 15, 2020. This drastic increase calls for quick intervention in the transmission and control strategy of COVID-19 in Africa. A mathematical model to theoretically investigate the consequence of ignoring asymptomatic cases on COVID-19 spread in Africa is proposed in this study. A qualitative analysis of the model is carried out with and without re-infection, and the reproduction number is obtained under re-infection. The results indicate that increasing case detection to detect asymptomatically infected individuals will be very effective in containing and reducing the burden of COVID-19 in Africa. In addition, the fact that it has not been confirmed whether a recovered individual can be re-infected or not, then enforcing a living condition where recovered individuals are not allowed to mix with the susceptible or exposed individuals will help in containing the spread of COVID-19.
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Affiliation(s)
- Abayomi Samuel Oke
- Department of Mathematical SciencesAdekunle Ajasin UniversityAkungbaNigeria
- Department of Mathematical and Actuarial ScienceKenyatta UniversityNairobiKenya
| | | | - Ganiyu Rasaq
- Department of Mathematical SciencesAdekunle Ajasin UniversityAkungbaNigeria
| | - Victoria Adodo
- Department of Mathematical SciencesAdekunle Ajasin UniversityAkungbaNigeria
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16
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Redhu N, Thakur Z. Network biology and applications. Bioinformatics 2022. [DOI: 10.1016/b978-0-323-89775-4.00024-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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17
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Harbola A, Negi D, Manchanda M, Kesharwani RK. Bioinformatics and biological data mining. Bioinformatics 2022. [DOI: 10.1016/b978-0-323-89775-4.00019-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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18
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Silal SP. Operational research: A multidisciplinary approach for the management of infectious disease in a global context. EUROPEAN JOURNAL OF OPERATIONAL RESEARCH 2021; 291:929-934. [PMID: 32836716 PMCID: PMC7377991 DOI: 10.1016/j.ejor.2020.07.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/04/2020] [Accepted: 07/19/2020] [Indexed: 05/04/2023]
Abstract
Infectious diseases, both established and emerging, impose a significant burden globally. Successful management of infectious diseases requires considerable effort and a multidisciplinary approach to tackle the complex web of interconnected biological, public health and economic systems. Through a wide range of problem-solving techniques and computational methods, operational research can strengthen health systems and support decision-making at all levels of disease control. From improved understanding of disease biology, intervention planning and implementation, assessing economic feasibility of new strategies, identifying opportunities for cost reductions in routine processes, and informing health policy, this paper highlights areas of opportunity for operational research to contribute to effective and efficient infectious disease management and improved health outcomes.
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Affiliation(s)
- Sheetal Prakash Silal
- Modelling and Simulation Hub, Africa, University of Cape Town, Cape Town, South Africa
- Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom
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19
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Aggarwal S, Tolani P, Gupta S, Yadav AK. Posttranslational modifications in systems biology. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2021; 127:93-126. [PMID: 34340775 DOI: 10.1016/bs.apcsb.2021.03.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The biological complexity cannot be captured by genes or proteins alone. The protein posttranslational modifications (PTMs) impart functional diversity to the proteome and regulate protein structure, activity, localization and interactions. Their dynamics drive cellular signaling, growth and development while their dysregulation causes many diseases. Mass spectrometry based quantitative profiling of PTMs and bioinformatics analysis tools allow systems level insights into their network architecture. High-resolution profiling of PTM networks will advance disease understanding and precision medicine. It can accelerate the discovery of biomarkers and drug targets. This requires better tools for unbiased, high-throughput and accurate PTM identification, site localization and automated annotation on a systems level.
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Affiliation(s)
- Suruchi Aggarwal
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India; Department of Molecular Biology and Biotechnology, Cotton University, Guwahati, Assam, India
| | - Priya Tolani
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India
| | - Srishti Gupta
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India; School of Biosciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Amit Kumar Yadav
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, Haryana, India.
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20
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Frisch HP, Sprau A, McElroy VF, Turner JD, Becher LRE, Nevala WK, Leontovich AA, Markovic SN. Cancer immune control dynamics: a clinical data driven model of systemic immunity in patients with metastatic melanoma. BMC Bioinformatics 2021; 22:197. [PMID: 33863290 PMCID: PMC8052714 DOI: 10.1186/s12859-021-04025-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 02/15/2021] [Indexed: 11/10/2022] Open
Abstract
Background Recent clinical advances in cancer immuno-therapeutics underscore the need for improved understanding of the complex relationship between cancer and the multiple, multi-functional, inter-dependent, cellular and humoral mediators/regulators of the human immune system. This interdisciplinary effort exploits engineering analysis methods utilized to investigate anomalous physical system behaviors to explore immune system behaviors. Cancer Immune Control Dynamics (CICD), a systems analysis approach, attempts to identify differences between systemic immune homeostasis of 27 healthy volunteers versus 14 patients with metastatic malignant melanoma based on daily serial measurements of conventional peripheral blood biomarkers (15 cell subsets, 35 cytokines). The modeling strategy applies engineering control theory to analyze an individual’s immune system based on the biomarkers’ dynamic non-linear oscillatory behaviors. The reverse engineering analysis uses a Singular Value Decomposition (SVD) algorithm to solve the inverse problem and identify a solution profile of the active biomarker relationships. Herein, 28,605 biologically possible biomarker interactions are modeled by a set of matrix equations creating a system interaction model. CICD quantifies the model with a participant’s biomarker data then computationally solves it to measure each relationship’s activity allowing a visualization of the individual’s current state of immunity. Results CICD results provide initial evidence that this model-based analysis is consistent with identified roles of biomarkers in systemic immunity of cancer patients versus that of healthy volunteers. The mathematical computations alone identified a plausible network of immune cells, including T cells, natural killer (NK) cells, monocytes, and dendritic cells (DC) with cytokines MCP-1 [CXCL2], IP-10 [CXCL10], and IL-8 that play a role in sustaining the state of immunity in advanced cancer. Conclusions With CICD modeling capabilities, the complexity of the immune system is mathematically quantified through thousands of possible interactions between multiple biomarkers. Therefore, the overall state of an individual’s immune system regardless of clinical status, is modeled as reflected in their blood samples. It is anticipated that CICD-based capabilities will provide tools to specifically address cancer and treatment modulated (immune checkpoint inhibitors) parameters of human immunity, revealing clinically relevant biological interactions. Supplementary Information The online version contains supplementary material available at 10.1186/s12859-021-04025-7.
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Affiliation(s)
- Harold P Frisch
- Payload Systems Engineering Branch, Emeritus, NASA, Annapolis, MD, USA
| | | | | | - James D Turner
- Retired Aerospace Consultant, Texas A&M University, College Station, TX, USA
| | - Laura R E Becher
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA
| | - Wendy K Nevala
- Department of Oncology Research, Mayo Clinic, Rochester, MN, USA
| | - Alexey A Leontovich
- Department of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN, USA
| | - Svetomir N Markovic
- Department of Medical Oncology, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
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21
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Rahman F, Meyer R, Kriak J, Goldblatt S, Slepian MJ. Big Data Analytics + Virtual Clinical Semantic Network (vCSN): An Approach to Addressing the Increasing Clinical Nuances and Organ Involvement of COVID-19. ASAIO J 2021; 67:18-24. [PMID: 32796159 DOI: 10.1097/mat.0000000000001275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has revealed deep gaps in our understanding of the clinical nuances of this extremely infectious viral pathogen. In order for public health, care delivery systems, clinicians, and other stakeholders to be better prepared for the next wave of SARS-CoV-2 infections, which, at this point, seems inevitable, we need to better understand this disease-not only from a clinical diagnosis and treatment perspective-but also from a forecasting, planning, and advanced preparedness point of view. To predict the onset and outcomes of a next wave, we first need to understand the pathologic mechanisms and features of COVID-19 from the point of view of the intricacies of clinical presentation, to the nuances of response to therapy. Here, we present a novel approach to model COVID-19, utilizing patient data from related diseases, combining clinical understanding with artificial intelligence modeling. Our process will serve as a methodology for analysis of the data being collected in the ASAIO database and other data sources worldwide.
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Affiliation(s)
- Fuad Rahman
- From the Biomedical Engineering, University of Arizona, Tucson, Arizona
| | | | | | | | - Marvin J Slepian
- From the Biomedical Engineering, University of Arizona, Tucson, Arizona
- Departments of Medicine, University of Arizona, Tucson, Arizona
- Sarver Heart Center, University of Arizona, Tucson, Arizona
- Arizona Center for Accelerated Biomedical Innovation, University of Arizona, Tucson, Arizona
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22
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de Oliveira ÉA, Goding CR, Maria-Engler SS. Organotypic Models in Drug Development "Tumor Models and Cancer Systems Biology for the Investigation of Anticancer Drugs and Resistance Development". Handb Exp Pharmacol 2021; 265:269-301. [PMID: 32548785 DOI: 10.1007/164_2020_369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The landscape of cancer treatment has improved over the past decades, aiming to reduce systemic toxicity and enhance compatibility with the quality of life of the patient. However, at the therapeutic level, metastatic cancer remains hugely challenging, based on the almost inevitable emergence of therapy resistance. A small subpopulation of cells able to survive drug treatment termed the minimal residual disease may either harbor resistance-associated mutations or be phenotypically resistant, allowing them to regrow and become the dominant population in the therapy-resistant tumor. Characterization of the profile of minimal residual disease represents the key to the identification of resistance drivers that underpin cancer evolution. Therapeutic regimens must, therefore, be dynamic and tailored to take into account the emergence of resistance as tumors evolve within a complex microenvironment in vivo. This requires the adoption of new technologies based on the culture of cancer cells in ways that more accurately reflect the intratumor microenvironment, and their analysis using omics and system-based technologies to enable a new era in the diagnostics, classification, and treatment of many cancer types by applying the concept "from the cell plate to the patient." In this chapter, we will present and discuss 3D model building and use, and provide comprehensive information on new genomic techniques that are increasing our understanding of drug action and the emergence of resistance.
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Affiliation(s)
- Érica Aparecida de Oliveira
- Skin Biology and Melanoma Lab, Department of Clinical Chemistry and Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Colin R Goding
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK
| | - Silvya Stuchi Maria-Engler
- Skin Biology and Melanoma Lab, Department of Clinical Chemistry and Toxicology, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
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23
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Nguyen TNT, Sasaki K, Kino-Oka M. Development of a kinetic model expressing anomalous phenomena in human induced pluripotent stem cell culture. J Biosci Bioeng 2020; 131:305-313. [PMID: 33262019 DOI: 10.1016/j.jbiosc.2020.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/20/2020] [Accepted: 10/28/2020] [Indexed: 11/24/2022]
Abstract
During culture with feeder cells, deviation from the undifferentiated state of human induced pluripotent stem cells (hiPSCs) occurs at a very low frequency. Anomalous cell migration in central and peripheral regions of hiPSC colonies has been suggested to be the trigger for this phenomenon. To confirm this hypothesis, sequential cell migration prior to deviation must be demonstrated. This has been difficult using in vitro methods. We therefore developed a kinetic model with a proposed definition of anomalous cell migration as continuous relatively fast or slow cell migration. The developed model was validated via in silico reproduction of deviation phenomenon observed in vitro, such as the positions of deviated cells in a colony and the frequency of deviation in culture. This model suggests that anomalous cell migration-driven hiPSC deviation can be explained by two factors: a mechanical stimulus, represented by cell migration, and duration of the mechanical stimulus. The factor "duration of mechanical stimulus" sets our model apart from others, and helps to realize the ultra-rare trigger (approximately 10-5) of deviation from the undifferentiated state in hiPSC culture.
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Affiliation(s)
- Thi Nhu Trang Nguyen
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kei Sasaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan; Global Center for Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Masahiro Kino-Oka
- Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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24
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Söderholm S, Cantù C. The WNT/β‐catenin dependent transcription: A tissue‐specific business. WIREs Mech Dis 2020; 13:e1511. [PMID: 33085215 PMCID: PMC9285942 DOI: 10.1002/wsbm.1511] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/24/2020] [Accepted: 09/25/2020] [Indexed: 12/11/2022]
Abstract
β‐catenin‐mediated Wnt signaling is an ancient cell‐communication pathway in which β‐catenin drives the expression of certain genes as a consequence of the trigger given by extracellular WNT molecules. The events occurring from signal to transcription are evolutionarily conserved, and their final output orchestrates countless processes during embryonic development and tissue homeostasis. Importantly, a dysfunctional Wnt/β‐catenin pathway causes developmental malformations, and its aberrant activation is the root of several types of cancer. A rich literature describes the multitude of nuclear players that cooperate with β‐catenin to generate a transcriptional program. However, a unified theory of how β‐catenin drives target gene expression is still missing. We will discuss two types of β‐catenin interactors: transcription factors that allow β‐catenin to localize at target regions on the DNA, and transcriptional co‐factors that ultimately activate gene expression. In contrast to the presumed universality of β‐catenin's action, the ensemble of available evidence suggests a view in which β‐catenin drives a complex system of responses in different cells and tissues. A malleable armamentarium of players might interact with β‐catenin in order to activate the right “canonical” targets in each tissue, developmental stage, or disease context. Discovering the mechanism by which each tissue‐specific β‐catenin response is executed will be crucial to comprehend how a seemingly universal pathway fosters a wide spectrum of processes during development and homeostasis. Perhaps more importantly, this could ultimately inform us about which are the tumor‐specific components that need to be targeted to dampen the activity of oncogenic β‐catenin. This article is categorized under:Cancer > Molecular and Cellular Physiology Cancer > Genetics/Genomics/Epigenetics Cancer > Stem Cells and Development
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Affiliation(s)
- Simon Söderholm
- Wallenberg Centre for Molecular Medicine Linköping University Linköping Sweden
- Department of Biomedical and Clinical Sciences, Division of Molecular Medicine and Virology, Faculty of Health Science Linköping University Linköping Sweden
| | - Claudio Cantù
- Wallenberg Centre for Molecular Medicine Linköping University Linköping Sweden
- Department of Biomedical and Clinical Sciences, Division of Molecular Medicine and Virology, Faculty of Health Science Linköping University Linköping Sweden
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25
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Wang J, Huang J, Jiang S, Zhang J, Zhang Q, Ning Y, Fang M, Liu S. Parametric optimization and kinetic study of l-lactic acid production by homologous batch fermentation of Lactobacillus pentosus cells. Biotechnol Appl Biochem 2020; 68:809-822. [PMID: 32738151 DOI: 10.1002/bab.1994] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/25/2020] [Indexed: 11/10/2022]
Abstract
Parametric optimization always plays important roles in bioengineering systems to obtain a high product yield under the proper conditions. The parametric conditions of lactic acid production by homologous batch fermentation of Lactobacillus pentosus cells was optimized by the Box-Behnken design. The highest l-lactic acid yield was obtained as 0.836 ± 0.003 g/g glucose with the productivity of 0.906 ± 0.003 g/(L × H) under the optimum conditions of 34.7 °C, pH 6.2, 148 rpm agitation speed, and 9.3 g/L nitrogen source concentration determined by quadratic response surface with high accuracy. The adequate kinetic models of cell growth rate, lactic production rate, and glucose consumption rate were also established to describe the fermentation behavior of L. pentosus cells with the correlation coefficients of 09985, 0.9990, and 0.9989, respectively.
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Affiliation(s)
- Jianfei Wang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Jiaqi Huang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA.,The Center for Biotechnology & Interdisciplinary Studies (CBIS) at Rensselaer Polytechnic Institute, Troy, USA
| | - Shaoming Jiang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Jing Zhang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Quanquan Zhang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Yuchen Ning
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Mudannan Fang
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
| | - Shijie Liu
- Department of Paper and Bioprocess Engineering, SUNY College of Environmental Science and Forestry, Syracuse, USA
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26
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Vlazaki M, Huber J, Restif O. Integrating mathematical models with experimental data to investigate the within-host dynamics of bacterial infections. Pathog Dis 2020; 77:5704399. [PMID: 31942996 PMCID: PMC6986552 DOI: 10.1093/femspd/ftaa001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 01/13/2020] [Indexed: 12/23/2022] Open
Abstract
Bacterial infections still constitute a major cause of mortality and morbidity worldwide. The unavailability of therapeutics, antimicrobial resistance and the chronicity of infections due to incomplete clearance contribute to this phenomenon. Despite the progress in antimicrobial and vaccine development, knowledge about the effect that therapeutics have on the host–bacteria interactions remains incomplete. Insights into the characteristics of bacterial colonization and migration between tissues and the relationship between replication and host- or therapeutically induced killing can enable efficient design of treatment approaches. Recently, innovative experimental techniques have generated data enabling the qualitative characterization of aspects of bacterial dynamics. Here, we argue that mathematical modeling as an adjunct to experimental data can enrich the biological insight that these data provide. However, due to limited interdisciplinary training, efforts to combine the two remain limited. To promote this dialogue, we provide a categorization of modeling approaches highlighting their relationship to data generated by a range of experimental techniques in the area of in vivo bacterial dynamics. We outline common biological themes explored using mathematical models with case studies across all pathogen classes. Finally, this review advocates multidisciplinary integration to improve our mechanistic understanding of bacterial infections and guide the use of existing or new therapies.
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Affiliation(s)
- Myrto Vlazaki
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK
| | - John Huber
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK
| | - Olivier Restif
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, CB3 0ES, Cambridge, UK
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27
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Stalidzans E, Zanin M, Tieri P, Castiglione F, Polster A, Scheiner S, Pahle J, Stres B, List M, Baumbach J, Lautizi M, Van Steen K, Schmidt HH. Mechanistic Modeling and Multiscale Applications for Precision Medicine: Theory and Practice. NETWORK AND SYSTEMS MEDICINE 2020. [DOI: 10.1089/nsm.2020.0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Egils Stalidzans
- Computational Systems Biology Group, University of Latvia, Riga, Latvia
- Latvian Biomedical Reasearch and Study Centre, Riga, Latvia
| | - Massimiliano Zanin
- Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, Pozuelo de Alarcón, Spain
| | - Paolo Tieri
- CNR National Research Council, IAC Institute for Applied Computing, Rome, Italy
| | - Filippo Castiglione
- CNR National Research Council, IAC Institute for Applied Computing, Rome, Italy
| | | | - Stefan Scheiner
- Institute for Mechanics of Materials and Structures, Vienna University of Technology, Vienna, Austria
| | - Jürgen Pahle
- BioQuant, Heidelberg University, Heidelberg, Germany
| | - Blaž Stres
- Department of Animal Science, University of Ljubljana, Ljubljana, Slovenia
- Faculty of Civil and Geodetic Engineering, University of Ljubljana, Ljubljana, Slovenia
- Department of Automation, Biocybernetics and Robotics, Jozef Stefan Institute, Ljubljana, Slovenia
| | - Markus List
- Big Data in BioMedicine Research Group, Chair of Experimental Bioinformatics, TUM School of Weihenstephan, Technical University of Munich, Freising, Germany
| | - Jan Baumbach
- Chair of Experimental Bioinformatics, TUM School of Weihenstephan, Technical University of Munich, Freising, Germany
| | - Manuela Lautizi
- Computational Systems Medicine Research Group, Chair of Experimental Bioinformatics, TUM School of Weihenstephan, Technical University of Munich, Freising, Germany
| | - Kristel Van Steen
- BIO-Systems Genetics, GIGA-R, University of Liège, Liège, Belgium
- BIO3—Systems Medicine, Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Harald H.H.W. Schmidt
- Department of Pharmacology and Personalised Medicine, Faculty of Health, Medicine and Life Science, Maastricht University, Maastricht, The Netherlands
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28
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Hallinen KM, Karslake J, Wood KB. Delayed antibiotic exposure induces population collapse in enterococcal communities with drug-resistant subpopulations. eLife 2020; 9:e52813. [PMID: 32207406 PMCID: PMC7159880 DOI: 10.7554/elife.52813] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 03/16/2020] [Indexed: 12/18/2022] Open
Abstract
The molecular underpinnings of antibiotic resistance are increasingly understood, but less is known about how these molecular events influence microbial dynamics on the population scale. Here, we show that the dynamics of E. faecalis communities exposed to antibiotics can be surprisingly rich, revealing scenarios where increasing population size or delaying drug exposure can promote population collapse. Specifically, we demonstrate how density-dependent feedback loops couple population growth and antibiotic efficacy when communities include drug-resistant subpopulations, leading to a wide range of behavior, including population survival, collapse, or one of two qualitatively distinct bistable behaviors where survival is favored in either small or large populations. These dynamics reflect competing density-dependent effects of different subpopulations, with growth of drug-sensitive cells increasing but growth of drug-resistant cells decreasing effective drug inhibition. Finally, we demonstrate how populations receiving immediate drug influx may sometimes thrive, while identical populations exposed to delayed drug influx collapse.
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Affiliation(s)
- Kelsey M Hallinen
- Department of Biophysics, University of MichiganAnn ArborUnited States
| | - Jason Karslake
- Department of Biophysics, University of MichiganAnn ArborUnited States
| | - Kevin B Wood
- Department of Biophysics, University of MichiganAnn ArborUnited States
- Department of Physics, University of MichiganAnn ArborUnited States
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29
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Alam MS, Kamrujjaman M, Islam MS. Parameter Sensitivity and Qualitative Analysis of Dynamics of Ovarian Tumor Growth Model with Treatment Strategy. ACTA ACUST UNITED AC 2020. [DOI: 10.4236/jamp.2020.86073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Grilo AL, Mantalaris A. A Predictive Mathematical Model of Cell Cycle, Metabolism, and Apoptosis of Monoclonal Antibody‐Producing GS–NS0 Cells. Biotechnol J 2019; 14:e1800573. [DOI: 10.1002/biot.201800573] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 06/22/2019] [Indexed: 12/18/2022]
Affiliation(s)
- António L. Grilo
- Biological Systems Engineering Laboratory Department of Chemical Engineering Centre for Process Systems EngineeringImperial College LondonExhibition Road London SW7 2AZ UK
| | - Athanasios Mantalaris
- Biological Systems Engineering Laboratory Department of Chemical Engineering Centre for Process Systems EngineeringImperial College LondonExhibition Road London SW7 2AZ UK
- Wallace H. Coulter Department of Biomedical Engineering Biomedical Systems Engineering LaboratoryGeorgia Institute of Technology950 Atlantic Drive Atlanta GA 30332 USA
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31
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Pappalardo F, Rajput AM, Motta S. Computational modeling of brain pathologies: the case of multiple sclerosis. Brief Bioinform 2019; 19:318-324. [PMID: 28011755 DOI: 10.1093/bib/bbw123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Indexed: 01/09/2023] Open
Abstract
The central nervous system is the most complex network of the human body. The existence and functionality of a large number of molecular species in human brain are still ambiguous and mostly unknown, thus posing a challenge to Science and Medicine. Neurological diseases inherit the same level of complexity, making effective treatments difficult to be found. Multiple sclerosis (MS) is a major neurological disease that causes severe inabilities and also a significant social burden on health care system: between 2 and 2.5 million people are affected by it, and the cost associated with it is significantly higher as compared with other neurological diseases because of the chronic nature of the disease and to the partial efficacy of current therapies. Despite difficulties in understanding and treating MS, many computational models have been developed to help neurologists. In the present work, we briefly review the main characteristics of MS and present a selection criteria of modeling approaches.
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Affiliation(s)
| | | | - Santo Motta
- Istitute for Applied Calculus (IAC) "M. Picone", National Research Council of Italy (CNR), Italy
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32
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Wang RS, Oldham WM, Maron BA, Loscalzo J. Systems Biology Approaches to Redox Metabolism in Stress and Disease States. Antioxid Redox Signal 2018; 29:953-972. [PMID: 29121773 PMCID: PMC6104248 DOI: 10.1089/ars.2017.7256] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 10/12/2017] [Accepted: 11/04/2017] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE All cellular metabolic processes are tied to the cellular redox environment. Therefore, maintaining redox homeostasis is critically important for normal cell function. Indeed, redox stress contributes to the pathobiology of many human diseases. The cellular redox response system is composed of numerous interconnected components, including free radicals, redox couples, protein thiols, enzymes, metabolites, and transcription factors. Moreover, interactions between and among these factors are regulated in time and space. Owing to their complexity, systems biology approaches to the characterization of the cellular redox response system may provide insights into novel homeostatic mechanisms and methods of therapeutic reprogramming. Recent Advances: The emergence and development of systems biology has brought forth a set of innovative technologies that provide new avenues for studying redox metabolism. This article will review these systems biology approaches and their potential application to the study of redox metabolism in stress and disease states. CRITICAL ISSUES Clarifying the scope of biological intermediaries affected by dysregulated redox metabolism requires methods that are suitable for analyzing big datasets as classical methods that do not account for multiple interactions are unlikely to portray the totality of perturbed metabolic systems. FUTURE DIRECTIONS Given the diverse redox microenvironments within cells, it will be important to improve the spatial resolution of omic approaches. Futures studies on the integration of multiple systems-based methods and heterogeneous omics data for redox metabolism are required to accelerate the development of the field of redox systems biology. Antioxid. Redox Signal. 29, 953-972.
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Affiliation(s)
- Rui-Sheng Wang
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - William M. Oldham
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Bradley A. Maron
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
- Section of Cardiology, Veterans Affairs Boston Healthcare System, West Roxbury, Massachusetts
| | - Joseph Loscalzo
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
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33
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Obaid A, Naz A, Ikram A, Awan FM, Raza A, Ahmad J, Ali A. Model of the adaptive immune response system against HCV infection reveals potential immunomodulatory agents for combination therapy. Sci Rep 2018; 8:8874. [PMID: 29891859 PMCID: PMC5995896 DOI: 10.1038/s41598-018-27163-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 05/17/2018] [Indexed: 12/11/2022] Open
Abstract
A regulated immune system employs multiple cell types, diverse variety of cytokines and interacting signalling networks against infections. Systems biology offers a promising solution to model and simulate such large populations of interacting components of immune systems holistically. This study focuses on the distinct components of the adaptive immune system and analysis, both individually and in association with HCV infection. The effective and failed adaptive immune response models have been developed followed by interventions/perturbations of various treatment strategies to get better assessment of the treatment responses under varying stimuli. Based on the model predictions, the NK cells, T regulatory cells, IL-10, IL-21, IL-12, IL-2 entities are found to be the most critical determinants of treatment response. The proposed potential immunomodulatory therapeutic interventions include IL-21 treatment, blocking of inhibitory receptors on T-cells and exogenous anti-IL-10 antibody treatment. The relative results showed that these interventions have differential effect on the expression levels of cellular and cytokines entities of the immune response. Notably, IL-21 enhances the expression of NK cells, Cytotoxic T lymphocytes and CD4+ T cells and hence restore the host immune potential. The models presented here provide a starting point for cost-effective analysis and more comprehensive modeling of biological phenomenon.
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Affiliation(s)
- Ayesha Obaid
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Anam Naz
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Aqsa Ikram
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Faryal Mehwish Awan
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Abida Raza
- National Institute of Lasers and Optronics (NILOP), Islamabad, Pakistan
| | - Jamil Ahmad
- Research Center for Modeling and Simulation (RCMS), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Amjad Ali
- Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences and Technology (NUST), Islamabad, Pakistan.
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34
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Madonia A, Melchiorri C, Bonamano S, Marcelli M, Bulfon C, Castiglione F, Galeotti M, Volpatti D, Mosca F, Tiscar PG, Romano N. Computational modeling of immune system of the fish for a more effective vaccination in aquaculture. Bioinformatics 2018; 33:3065-3071. [PMID: 28549079 DOI: 10.1093/bioinformatics/btx341] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 05/24/2017] [Indexed: 01/06/2023] Open
Abstract
Motivation A computational model equipped with the main immunological features of the sea bass (Dicentrarchus labrax L.) immune system was used to predict more effective vaccination in fish. The performance of the model was evaluated by using the results of two in vivo vaccinations trials against L. anguillarum and P. damselae. Results Tests were performed to select the appropriate doses of vaccine and infectious bacteria to set up the model. Simulation outputs were compared with the specific antibody production and the expression of BcR and TcR gene transcripts in spleen. The model has shown a good ability to be used in sea bass and could be implemented for different routes of vaccine administration even with more than two pathogens. The model confirms the suitability of in silico methods to optimize vaccine doses and the immune response to them. This model could be applied to other species to optimize the design of new vaccination treatments of fish in aquaculture. Availability and implementation The method is available at http://www.iac.cnr.it/∼filippo/c-immsim/. Contact nromano@unitus.it. Supplementary information Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Alice Madonia
- Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy
| | - Cristiano Melchiorri
- Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy
| | - Simone Bonamano
- Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy
| | - Marco Marcelli
- Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy
| | - Chiara Bulfon
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), Section of Animal and Veterinary Sciences, University of Udine, 33100, Italy
| | | | - Marco Galeotti
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), Section of Animal and Veterinary Sciences, University of Udine, 33100, Italy
| | - Donatella Volpatti
- Department of Agricultural, Food, Environmental and Animal Sciences (DI4A), Section of Animal and Veterinary Sciences, University of Udine, 33100, Italy
| | - Francesco Mosca
- Institute of Applied Computing "M.Picone", CNR, 00185, Rome, Italy
| | | | - Nicla Romano
- Department of Ecological and Biological Sciences, Tuscia University, 01100, Viterbo, Italy
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35
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Sylman JL, Mitrugno A, Atallah M, Tormoen GW, Shatzel JJ, Tassi Yunga S, Wagner TH, Leppert JT, Mallick P, McCarty OJT. The Predictive Value of Inflammation-Related Peripheral Blood Measurements in Cancer Staging and Prognosis. Front Oncol 2018; 8:78. [PMID: 29619344 PMCID: PMC5871812 DOI: 10.3389/fonc.2018.00078] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/07/2018] [Indexed: 12/23/2022] Open
Abstract
In this review, we discuss the interaction between cancer and markers of inflammation (such as levels of inflammatory cells and proteins) in the circulation, and the potential benefits of routinely monitoring these markers in peripheral blood measurement assays. Next, we discuss the prognostic value and limitations of using inflammatory markers such as neutrophil-to-lymphocyte and platelet-to-lymphocyte ratios and C-reactive protein measurements. Furthermore, the review discusses the benefits of combining multiple types of measurements and longitudinal tracking to improve staging and prognosis prediction of patients with cancer, and the ability of novel in silico frameworks to leverage this high-dimensional data.
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Affiliation(s)
- Joanna L Sylman
- VA Palo Alto Health Care System, Palo Alto, CA, United States.,Biomedical Engineering, School of Medicine, Oregon Health & Science University, Portland, OR, United States.,Canary Center at Stanford, Department of Radiology, Stanford University School of Medicine, Stanford, CA, United States
| | - Annachiara Mitrugno
- Biomedical Engineering, School of Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Michelle Atallah
- Canary Center at Stanford, Department of Radiology, Stanford University School of Medicine, Stanford, CA, United States
| | - Garth W Tormoen
- Department of Radiation Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Joseph J Shatzel
- Division of Hematology and Medical Oncology, Oregon Health & Science University, Portland, OR, United States.,Cancer Early Detection & Advanced Research Center, Oregon Health & Science University, Portland, OR, United States
| | - Samuel Tassi Yunga
- Cancer Early Detection & Advanced Research Center, Oregon Health & Science University, Portland, OR, United States.,Knight Cancer Institute, Oregon Health & Science University, Portland, OR, United States
| | - Todd H Wagner
- VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Surgery, Stanford University School of Medicine, Stanford, CA, United States
| | - John T Leppert
- VA Palo Alto Health Care System, Palo Alto, CA, United States.,Department of Urology, Stanford University School of Medicine, Stanford, CA, United States
| | - Parag Mallick
- Canary Center at Stanford, Department of Radiology, Stanford University School of Medicine, Stanford, CA, United States
| | - Owen J T McCarty
- Biomedical Engineering, School of Medicine, Oregon Health & Science University, Portland, OR, United States
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36
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Dhanda SK, Usmani SS, Agrawal P, Nagpal G, Gautam A, Raghava GPS. Novel in silico tools for designing peptide-based subunit vaccines and immunotherapeutics. Brief Bioinform 2017; 18:467-478. [PMID: 27016393 DOI: 10.1093/bib/bbw025] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Indexed: 12/19/2022] Open
Abstract
The conventional approach for designing vaccine against a particular disease involves stimulation of the immune system using the whole pathogen responsible for the disease. In the post-genomic era, a major challenge is to identify antigenic regions or epitopes that can stimulate different arms of the immune system. In the past two decades, numerous methods and databases have been developed for designing vaccine or immunotherapy against various pathogen-causing diseases. This review describes various computational resources important for designing subunit vaccines or epitope-based immunotherapy. First, different immunological databases are described that maintain epitopes, antigens and vaccine targets. This is followed by in silico tools used for predicting linear and conformational B-cell epitopes required for activating humoral immunity. Finally, information on T-cell epitope prediction methods is provided that includes indirect methods like prediction of Major Histocompatibility Complex and transporter-associated protein binders. Different studies for validating the predicted epitopes are also examined critically. This review enlists novel in silico resources and tools available for predicting humoral and cell-mediated immune potential. These predicted epitopes could be used for designing epitope-based vaccines or immunotherapy as they may activate the adaptive immunity. Authors emphasized the need to develop tools for the prediction of adjuvants to activate innate and adaptive immune system simultaneously. In addition, attention has also been given to novel prediction methods to predict general therapeutic properties of peptides like half-life, cytotoxicity and immune toxicity.
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37
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Kamisoglu K, Acevedo A, Almon RR, Coyle S, Corbett S, Dubois DC, Nguyen TT, Jusko WJ, Androulakis IP. Understanding Physiology in the Continuum: Integration of Information from Multiple - Omics Levels. Front Pharmacol 2017; 8:91. [PMID: 28289389 PMCID: PMC5327699 DOI: 10.3389/fphar.2017.00091] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 02/13/2017] [Indexed: 01/18/2023] Open
Abstract
In this paper, we discuss approaches for integrating biological information reflecting diverse physiologic levels. In particular, we explore statistical and model-based methods for integrating transcriptomic, proteomic and metabolomics data. Our case studies reflect responses to a systemic inflammatory stimulus and in response to an anti-inflammatory treatment. Our paper serves partly as a review of existing methods and partly as a means to demonstrate, using case studies related to human endotoxemia and response to methylprednisolone (MPL) treatment, how specific questions may require specific methods, thus emphasizing the non-uniqueness of the approaches. Finally, we explore novel ways for integrating -omics information with PKPD models, toward the development of more integrated pharmacology models.
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Affiliation(s)
- Kubra Kamisoglu
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo NY, USA
| | - Alison Acevedo
- Department of Biomedical Engineering, Rutgers University, Piscataway NJ, USA
| | - Richard R Almon
- Department of Biological Sciences, University at Buffalo, Buffalo NY, USA
| | - Susette Coyle
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, New Brunswick NJ, USA
| | - Siobhan Corbett
- Department of Surgery, Rutgers Robert Wood Johnson Medical School, New Brunswick NJ, USA
| | - Debra C Dubois
- Department of Biological Sciences, University at Buffalo, Buffalo NY, USA
| | - Tung T Nguyen
- BioMaPS Institute for Quantitative Biology, Rutgers University, Piscataway NJ, USA
| | - William J Jusko
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University at Buffalo, Buffalo NY, USA
| | - Ioannis P Androulakis
- Department of Biomedical Engineering, Rutgers University, PiscatawayNJ, USA; Department of Chemical Engineering, Rutgers University, PiscatawayNJ, USA
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38
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Augustin LSA, Libra M, Crispo A, Grimaldi M, De Laurentiis M, Rinaldo M, D'Aiuto M, Catalano F, Banna G, Ferrau' F, Rossello R, Serraino D, Bidoli E, Massarut S, Thomas G, Gatti D, Cavalcanti E, Pinto M, Riccardi G, Vidgen E, Kendall CWC, Jenkins DJA, Ciliberto G, Montella M. Low glycemic index diet, exercise and vitamin D to reduce breast cancer recurrence (DEDiCa): design of a clinical trial. BMC Cancer 2017; 17:69. [PMID: 28114909 PMCID: PMC5259892 DOI: 10.1186/s12885-017-3064-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 01/13/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Mechanisms influencing breast cancer (BC) development and recurrence include hyperglycemia, hyperinsulinemia, high insulin-like growth factor-1, high circulating estrogen, inflammation and impaired cellular differentiation/apoptosis. A lifestyle program that targets all the above mechanisms may be warranted. Low glycemic index (GI) foods produce lower post-prandial glucose and insulin responses and have been associated with lower BC risk. Moderate physical activity post-diagnosis reduces BC recurrence and mortality, partly explained by reduced insulin and estrogen levels. Vitamin D increases cell differentiation/apoptosis and high serum vitamin D levels improve BC survival. Yet no trial has evaluated the combined effect of a low GI diet, moderate physical activity and vitamin D supplementation on BC recurrence in the context of a Mediterranean lifestyle setting. METHODS Women (30-74 yr) who had undergone surgery for primary histologically confirmed BC (stages I-III) within the previous 12 months, in cancer centres in Italy, will be randomized to follow, for a maximum of 33 months, either a high intensity treatment (HIT) composed of low GI diet + exercise + vitamin D (60 ng/mL serum concentration) or a lower intensity treatment (LITE) with general advice to follow a healthy diet and exercise pattern + vitamin D to avoid insufficiency. Both interventions are on a background of a Mediterranean diet. Considering a 20% recurrence rate within 3 years for BC cases and a predicted rate of 10% in the HIT group, with power of 80% and two-sided alpha of 0.05, the subject number required will be 506 (n = 253 in each arm). Clinic visits will be scheduled every 3 months. Dietary and exercise counselling and vitamin D supplements will be given at each clinic visit when blood samples, anthropometric measures and 7-day food records will be collected. DISCUSSION DEDiCa study aims to reduce BC recurrence in women with BC using a lifestyle approach with additional vitamin D and to investigate possible cardio-metabolic benefits as well as epigenetic modifications according to lifestyle changes. Given the supporting evidence and safety of the components of our intervention we believe it is feasible and urgent to test it in cancer patients. TRIAL REGISTRATION May 11, 2016; NCT02786875 . EUDRACT NUMBER 2015-005147-14.
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Affiliation(s)
- Livia S A Augustin
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy. .,Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Canada.
| | - Massimo Libra
- Department of Biomedical and Biotechnological Sciences Oncologic, Clinical and General Pathology Section, University of Catania, Catania, Italy
| | - Anna Crispo
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Maria Grimaldi
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Michele De Laurentiis
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Massimo Rinaldo
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Massimiliano D'Aiuto
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | | | | | | | | | | | | | | | - Guglielmo Thomas
- Seconda Universita' di Napoli, Naples, Italy.,Clinica Mediterranea SpA, Naples, Italy
| | - Davide Gatti
- Rheumatology Unit, University of Verona, Verona, Italy
| | - Ernesta Cavalcanti
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Monica Pinto
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
| | - Gabriele Riccardi
- Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy
| | - Edward Vidgen
- Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Cyril W C Kendall
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada.,College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Canada
| | - David J A Jenkins
- Clinical Nutrition and Risk Factor Modification Centre, St. Michael's Hospital, Toronto, Canada.,Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, Toronto, Canada.,Division of Endocrinology and Metabolism, St. Michael's Hospital, Toronto, Canada.,Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada
| | - Gennaro Ciliberto
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy.,National Cancer Institute IRCCS Istituto Nazionale Tumori "Regina Elena", Rome, Italy
| | - Maurizio Montella
- National Cancer Institute Istituto Nazionale Tumori "Fondazione Giovanni Pascale", IRCCS, Naples, Italy
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39
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Pennisi M, Cavalieri S, Motta S, Pappalardo F. A methodological approach for using high-level Petri Nets to model the immune system response. BMC Bioinformatics 2016; 17:498. [PMID: 28155706 PMCID: PMC5259858 DOI: 10.1186/s12859-016-1361-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND Mathematical and computational models showed to be a very important support tool for the comprehension of the immune system response against pathogens. Models and simulations allowed to study the immune system behavior, to test biological hypotheses about diseases and infection dynamics, and to improve and optimize novel and existing drugs and vaccines. Continuous models, mainly based on differential equations, usually allow to qualitatively study the system but lack in description; conversely discrete models, such as agent based models and cellular automata, permit to describe in detail entities properties at the cost of losing most qualitative analyses. Petri Nets (PN) are a graphical modeling tool developed to model concurrency and synchronization in distributed systems. Their use has become increasingly marked also thanks to the introduction in the years of many features and extensions which lead to the born of "high level" PN. RESULTS We propose a novel methodological approach that is based on high level PN, and in particular on Colored Petri Nets (CPN), that can be used to model the immune system response at the cellular scale. To demonstrate the potentiality of the approach we provide a simple model of the humoral immune system response that is able of reproducing some of the most complex well-known features of the adaptive response like memory and specificity features. CONCLUSIONS The methodology we present has advantages of both the two classical approaches based on continuous and discrete models, since it allows to gain good level of granularity in the description of cells behavior without losing the possibility of having a qualitative analysis. Furthermore, the presented methodology based on CPN allows the adoption of the same graphical modeling technique well known to life scientists that use PN for the modeling of signaling pathways. Finally, such an approach may open the floodgates to the realization of multi scale models that integrate both signaling pathways (intra cellular) models and cellular (population) models built upon the same technique and software.
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Affiliation(s)
- Marzio Pennisi
- Department of Mathematics and Computer Science, University of Catania, Catania, Italy
| | - Salvatore Cavalieri
- Department of Electrical Electronic and Computer Engineering (DIEEI), University of Catania, Catania, Italy
| | - Santo Motta
- Department of Mathematics and Computer Science, University of Catania, Catania, Italy
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40
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Prediction of Clinical Deterioration in Hospitalized Adult Patients with Hematologic Malignancies Using a Neural Network Model. PLoS One 2016; 11:e0161401. [PMID: 27532679 PMCID: PMC4988721 DOI: 10.1371/journal.pone.0161401] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 08/04/2016] [Indexed: 01/02/2023] Open
Abstract
Introduction Clinical deterioration (ICU transfer and cardiac arrest) occurs during approximately 5–10% of hospital admissions. Existing prediction models have a high false positive rate, leading to multiple false alarms and alarm fatigue. We used routine vital signs and laboratory values obtained from the electronic medical record (EMR) along with a machine learning algorithm called a neural network to develop a prediction model that would increase the predictive accuracy and decrease false alarm rates. Design Retrospective cohort study. Setting The hematologic malignancy unit in an academic medical center in the United States. Patient Population Adult patients admitted to the hematologic malignancy unit from 2009 to 2010. Intervention None. Measurements and Main Results Vital signs and laboratory values were obtained from the electronic medical record system and then used as predictors (features). A neural network was used to build a model to predict clinical deterioration events (ICU transfer and cardiac arrest). The performance of the neural network model was compared to the VitalPac Early Warning Score (ViEWS). Five hundred sixty five consecutive total admissions were available with 43 admissions resulting in clinical deterioration. Using simulation, the neural network outperformed the ViEWS model with a positive predictive value of 82% compared to 24%, respectively. Conclusion We developed and tested a neural network-based prediction model for clinical deterioration in patients hospitalized in the hematologic malignancy unit. Our neural network model outperformed an existing model, substantially increasing the positive predictive value, allowing the clinician to be confident in the alarm raised. This system can be readily implemented in a real-time fashion in existing EMR systems.
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Pappalardo F, Pennisi M. Agent based simulations in disease modeling Comment on "Towards a unified approach in the modeling of fibrosis: A review with research perspectives" by Martine Ben Amar and Carlo Bianca. Phys Life Rev 2016; 17:110-1. [PMID: 27173053 DOI: 10.1016/j.plrev.2016.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 05/04/2016] [Indexed: 10/21/2022]
Affiliation(s)
- Francesco Pappalardo
- Dipartimento di Scienze del Farmaco, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
| | - Marzio Pennisi
- Dipartimento di Matematica e Informatica, Università di Catania, Viale Andrea Doria 6, 95125 Catania, Italy.
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Pennisi M, Russo G, Di Salvatore V, Candido S, Libra M, Pappalardo F. Computational modeling in melanoma for novel drug discovery. Expert Opin Drug Discov 2016; 11:609-21. [PMID: 27046143 DOI: 10.1080/17460441.2016.1174688] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION There is a growing body of evidence highlighting the applications of computational modeling in the field of biomedicine. It has recently been applied to the in silico analysis of cancer dynamics. In the era of precision medicine, this analysis may allow the discovery of new molecular targets useful for the design of novel therapies and for overcoming resistance to anticancer drugs. According to its molecular behavior, melanoma represents an interesting tumor model in which computational modeling can be applied. Melanoma is an aggressive tumor of the skin with a poor prognosis for patients with advanced disease as it is resistant to current therapeutic approaches. AREAS COVERED This review discusses the basics of computational modeling in melanoma drug discovery and development. Discussion includes the in silico discovery of novel molecular drug targets, the optimization of immunotherapies and personalized medicine trials. EXPERT OPINION Mathematical and computational models are gradually being used to help understand biomedical data produced by high-throughput analysis. The use of advanced computer models allowing the simulation of complex biological processes provides hypotheses and supports experimental design. The research in fighting aggressive cancers, such as melanoma, is making great strides. Computational models represent the key component to complement these efforts. Due to the combinatorial complexity of new drug discovery, a systematic approach based only on experimentation is not possible. Computational and mathematical models are necessary for bringing cancer drug discovery into the era of omics, big data and personalized medicine.
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Affiliation(s)
- Marzio Pennisi
- a Department of Mathematics and Computer Science , University of Catania , Catania , Italy
| | - Giulia Russo
- b Department of Biomedical and Biotechnological Sciences , University of Catania , Catania , Italy
| | - Valentina Di Salvatore
- c Researcher at National Research Council , Institute of Neurological Sciences , Catania , Italy
| | - Saverio Candido
- b Department of Biomedical and Biotechnological Sciences , University of Catania , Catania , Italy
| | - Massimo Libra
- b Department of Biomedical and Biotechnological Sciences , University of Catania , Catania , Italy
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Pennisi M, Russo G, Motta S, Pappalardo F. Agent based modeling of the effects of potential treatments over the blood-brain barrier in multiple sclerosis. J Immunol Methods 2015; 427:6-12. [PMID: 26343337 DOI: 10.1016/j.jim.2015.08.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 06/15/2015] [Accepted: 08/28/2015] [Indexed: 10/23/2022]
Abstract
Multiple sclerosis is a disease of the central nervous system that involves the destruction of the insulating sheath of axons, causing severe disabilities. Since the etiology of the disease is not yet fully understood, the use of novel techniques that may help to understand the disease, to suggest potential therapies and to test the effects of candidate treatments is highly advisable. To this end we developed an agent based model that demonstrated its ability to reproduce the typical oscillatory behavior observed in the most common form of multiple sclerosis, relapsing-remitting multiple sclerosis. The model has then been used to test the potential beneficial effects of vitamin D over the disease. Many scientific studies underlined the importance of the blood-brain barrier and of the mechanisms that influence its permeability on the development of the disease. In the present paper we further extend our previously developed model with a mechanism that mimics the blood-brain barrier behavior. The goal of our work is to suggest the best strategies to follow for developing new potential treatments that intervene in the blood-brain barrier. Results suggest that the best treatments should potentially prevent the opening of the blood-brain barrier, as treatments that help in recovering the blood-brain barrier functionality could be less effective.
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Affiliation(s)
- Marzio Pennisi
- Department of Mathematics and Computer Science, University of Catania, 95125 Catania, Italy
| | - Giulia Russo
- Department of Drug Science, University of Catania, 95125 Catania, Italy
| | - Santo Motta
- Department of Mathematics and Computer Science, University of Catania, 95125 Catania, Italy
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Wheatley R, Angilletta MJ, Niehaus AC, Wilson RS. How Fast Should an Animal Run When Escaping? An Optimality Model Based on the Trade-Off Between Speed and Accuracy. Integr Comp Biol 2015; 55:1166-75. [PMID: 26254873 DOI: 10.1093/icb/icv091] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
How fast should animals move when trying to survive? Although many studies have examined how fast animals can move, the fastest speed is not always best. For example, an individual escaping from a predator must run fast enough to escape, but not so fast that it slips and falls. To explore this idea, we developed a simple mathematical model that predicts the optimal speed for an individual running from a predator along a straight beam. A beam was used as a proxy for straight-line running with severe consequences for missteps. We assumed that success, defined as reaching the end of the beam, had two broad requirements: (1) running fast enough to escape a predator, and (2) minimizing the probability of making a mistake that would compromise speed. Our model can be tailored to different systems by revising the predator's maximal speed, the prey's stride length and motor coordination, and the dimensions of the beam. Our model predicts that animals should run slower when the beam is narrower or when coordination is worse.
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Affiliation(s)
- Rebecca Wheatley
- *School of Biological Sciences, University of Queensland, St Lucia, Queensland 4072, Australia;
| | | | - Amanda C Niehaus
- *School of Biological Sciences, University of Queensland, St Lucia, Queensland 4072, Australia
| | - Robbie S Wilson
- *School of Biological Sciences, University of Queensland, St Lucia, Queensland 4072, Australia
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Apel AC, Weuster-Botz D. Engineering solutions for open microalgae mass cultivation and realistic indoor simulation of outdoor environments. Bioprocess Biosyst Eng 2015; 38:995-1008. [PMID: 25627468 DOI: 10.1007/s00449-015-1363-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 01/15/2015] [Indexed: 01/27/2023]
Abstract
Microalgae could become an important renewable source for chemicals, food, and energy if process costs can be reduced. In the past 60 years, relevant factors in open outdoor mass cultivation of microalgae were identified and elaborate solutions regarding bioprocesses and bioreactors were developed. An overview of these solutions is presented. Since the cost of most microalgal products from current mass cultivation systems is still prohibitively high, further development is required. The application of complex computational techniques for cost-effective process and reactor development will become more important if experimental validation of simulation results can easily be achieved. Due to difficulties inherent to outdoor experimentation, it can be useful to conduct validation experiments indoors. Considerations and approaches for realistic indoor reproduction of the most important environmental conditions in microalgae cultivation experiments-light, temperature, and substance concentrations, are discussed.
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Affiliation(s)
- Andreas Christoph Apel
- Lehrstuhl für Bioverfahrenstechnik, Technische Universität München, Boltzmannstr. 15, 85748, Garching, Germany,
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Advances in Computational Immunology. J Immunol Res 2015; 2015:170920. [PMID: 26844232 PMCID: PMC4710917 DOI: 10.1155/2015/170920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 12/13/2015] [Indexed: 11/28/2022] Open
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Computational and bioinformatics techniques for immunology. BIOMED RESEARCH INTERNATIONAL 2014; 2014:263189. [PMID: 25610859 PMCID: PMC4295581 DOI: 10.1155/2014/263189] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 07/22/2014] [Indexed: 11/17/2022]
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Mody N, Dubey S, Sharma R, Agrawal U, Vyas SP. Dendritic cell-based vaccine research against cancer. Expert Rev Clin Immunol 2014; 11:213-32. [DOI: 10.1586/1744666x.2015.987663] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Bayesian immunological model development from the literature: example investigation of recent thymic emigrants. J Immunol Methods 2014; 414:32-50. [PMID: 25179832 DOI: 10.1016/j.jim.2014.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 06/16/2014] [Accepted: 08/21/2014] [Indexed: 11/21/2022]
Abstract
Bayesian estimation techniques offer a systematic and quantitative approach for synthesizing data drawn from the literature to model immunological systems. As detailed here, the practitioner begins with a theoretical model and then sequentially draws information from source data sets and/or published findings to inform estimation of model parameters. Options are available to weigh these various sources of information differentially per objective measures of their corresponding scientific strengths. This approach is illustrated in depth through a carefully worked example for a model of decline in T-cell receptor excision circle content of peripheral T cells during development and aging. Estimates from this model indicate that 21 years of age is plausible for the developmental timing of mean age of onset of decline in T-cell receptor excision circle content of peripheral T cells.
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Castiglione F, Pappalardo F, Bianca C, Russo G, Motta S. Modeling biology spanning different scales: an open challenge. BIOMED RESEARCH INTERNATIONAL 2014; 2014:902545. [PMID: 25143952 PMCID: PMC4124842 DOI: 10.1155/2014/902545] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/25/2014] [Indexed: 02/03/2023]
Abstract
It is coming nowadays more clear that in order to obtain a unified description of the different mechanisms governing the behavior and causality relations among the various parts of a living system, the development of comprehensive computational and mathematical models at different space and time scales is required. This is one of the most formidable challenges of modern biology characterized by the availability of huge amount of high throughput measurements. In this paper we draw attention to the importance of multiscale modeling in the framework of studies of biological systems in general and of the immune system in particular.
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Affiliation(s)
- Filippo Castiglione
- Institute for Applied Mathematics, National Research Council of Italy, Rome, Italy
| | | | - Carlo Bianca
- Theoretical Physics of Condensed Matter, Sorbonne Universities, UPMC Univ Paris 6, 75252 Paris Cedex 05, France
- UMR 7600 LPTMC, CNRS, 75252 Paris Cedex 05, France
| | - Giulia Russo
- Department of Pharmaceutical Sciences, University of Catania, Catania, Italy
| | - Santo Motta
- Department of Mathematics and Computer Science, University of Catania, 95125 Catania, Italy
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