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Stability, co-dimension two bifurcations and chaos control of a host-parasitoid model with mutual interference. CHAOS SOLITONS & FRACTALS 2023. [DOI: 10.1016/j.chaos.2022.112923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
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Kardynska M, Smieja J, Paszek P, Puszynski K. Application of Sensitivity Analysis to Discover Potential Molecular Drug Targets. Int J Mol Sci 2022; 23:ijms23126604. [PMID: 35743048 PMCID: PMC9223434 DOI: 10.3390/ijms23126604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/07/2022] [Accepted: 06/10/2022] [Indexed: 11/24/2022] Open
Abstract
Mathematical modeling of signaling pathways and regulatory networks has been supporting experimental research for some time now. Sensitivity analysis, aimed at finding model parameters whose changes yield significantly altered cellular responses, is an important part of modeling work. However, sensitivity methods are often directly transplanted from analysis of technical systems, and thus, they may not serve the purposes of analysis of biological systems. This paper presents a novel sensitivity analysis method that is particularly suited to the task of searching for potential molecular drug targets in signaling pathways. Using two sample models of pathways, p53/Mdm2 regulatory module and IFN-β-induced JAK/STAT signaling pathway, we show that the method leads to biologically relevant conclusions, identifying processes suitable for targeted pharmacological inhibition, represented by the reduction of kinetic parameter values. That, in turn, facilitates subsequent search for active drug components.
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Affiliation(s)
- Malgorzata Kardynska
- Department of Biosensors and Processing of Biomedical Signals, Silesian University of Technology, 41-800 Zabrze, Poland;
- Department of Systems Biology and Engineering, Silesian University of Technology, 44-100 Gliwice, Poland;
| | - Jaroslaw Smieja
- Department of Systems Biology and Engineering, Silesian University of Technology, 44-100 Gliwice, Poland;
- Correspondence:
| | - Pawel Paszek
- School of Biology, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UK;
| | - Krzysztof Puszynski
- Department of Systems Biology and Engineering, Silesian University of Technology, 44-100 Gliwice, Poland;
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Gutowska K, Kogut D, Kardynska M, Formanowicz P, Smieja J, Puszynski K. Petri nets and ODEs as complementary methods for comprehensive analysis on an example of the ATM-p53-NF-[Formula: see text]B signaling pathways. Sci Rep 2022; 12:1135. [PMID: 35064163 PMCID: PMC8782877 DOI: 10.1038/s41598-022-04849-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 12/09/2021] [Indexed: 12/17/2022] Open
Abstract
Intracellular processes are cascades of biochemical reactions, triggered in response to various types of stimuli. Mathematical models describing their dynamics have become increasingly popular in recent years, as tools supporting experimental work in analysis of pathways and regulatory networks. Not only do they provide insights into general properties of these systems, but also help in specific tasks, such as search for drug molecular targets or treatment protocols. Different tools and methods are used to model complex biological systems. In this work, we focus on ordinary differential equations (ODEs) and Petri nets. We consider specific methods of analysis of such models, i.e., sensitivity analysis (SA) and significance analysis. So far, they have been applied separately, with different goals. In this paper, we show that they can complement each other, combining the sensitivity of ODE models and the significance analysis of Petri nets. The former is used to find parameters, whose change results in the greatest quantitative and qualitative changes in the model response, while the latter is a structural analysis and allows indicating the most important subprocesses in terms of information flow in Petri net. Ultimately, both methods facilitate finding the essential processes in a given signaling pathway or regulatory network and may be used to support medical therapy development. In the paper, the use of dual modeling is illustrated with an example of ATM/p53/NF-[Formula: see text]B pathway. Each method was applied to analyze this system, resulting in finding different subsets of important processes that might be prospective targets for changing this system behavior. While some of the processes were indicated in each of the approaches, others were found by one method only and would be missed if only that method was applied. This leads to the conclusion about the complementarity of the methods under investigation. The dual modeling approach of comprehensive structural and parametric analysis yields results that would not be possible if these two modeling approaches were applied separately. The combined approach, proposed in this paper, facilitates finding not only key processes, with which significant parameters are associated, but also significant modules, corresponding to subsystems of regulatory networks. The results provide broader insight into therapy targets in diseases in which the natural control of intracellular processes is disturbed, leading to the development of more effective therapies in medicine.
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Affiliation(s)
- Kaja Gutowska
- Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965 Poznan, Poland
| | - Daria Kogut
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Malgorzata Kardynska
- Department of Biosensors and Processing of Biomedical Signals, Silesian University of Technology, Roosevelta 40, 41-800 Zabrze, Poland
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Piotr Formanowicz
- Institute of Computing Science, Poznan University of Technology, Piotrowo 2, 60-965 Poznan, Poland
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznan, Poland
| | - Jaroslaw Smieja
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
| | - Krzysztof Puszynski
- Department of Systems Biology and Engineering, Silesian University of Technology, Akademicka 16, 44-100 Gliwice, Poland
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Ochab M, Puszynski K. Piece-wise linear models of biological systems-Application, analysis, and comparison with nonlinear models using the example of the p53 regulatory module. PLoS One 2020; 15:e0243823. [PMID: 33326446 PMCID: PMC7743982 DOI: 10.1371/journal.pone.0243823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 11/27/2020] [Indexed: 11/19/2022] Open
Abstract
In this paper, we propose to use a linear system with switching methodology for description and analysis of complex biological systems. We show advantages of the proposed approach over the one usually used, which is based on ODE. We propose the detailed methodology of a full analysis of developed models, including analytical determination of the location and type of equilibrium points, finding an analytical solution, stability and bifurcation analysis. We illustrate the above with the example of the well-known p53 signalling pathway comparing the results with the results of a nonlinear, ODE-based version of the proposed model. The complex methodology proposed by us, especially due to the definition of model structure, which is easy to understand for biologists and medics, may be a bridge for closer cooperation between them and engineers in the future.
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Affiliation(s)
- Magdalena Ochab
- Department of Systems Biology and Engineering, Silesian University of Technology, Gliwice, Poland
| | - Krzysztof Puszynski
- Department of Systems Biology and Engineering, Silesian University of Technology, Gliwice, Poland
- * E-mail:
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Chong KH, Samarasinghe S, Kulasiri D, Zheng J. Mathematical modelling of core regulatory mechanism in p53 protein that activates apoptotic switch. J Theor Biol 2019; 462:134-147. [DOI: 10.1016/j.jtbi.2018.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 10/29/2018] [Accepted: 11/10/2018] [Indexed: 01/25/2023]
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Demirkıran G, Kalaycı Demir G, Güzeliş C. Revealing determinants of two-phase dynamics of P53 network under gamma irradiation based on a reduced 2D relaxation oscillator model. IET Syst Biol 2018; 12:26-38. [PMID: 29337287 PMCID: PMC8687238 DOI: 10.1049/iet-syb.2017.0041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/17/2017] [Accepted: 10/25/2017] [Indexed: 01/03/2023] Open
Abstract
This study proposes a two-dimensional (2D) oscillator model of p53 network, which is derived via reducing the multidimensional two-phase dynamics model into a model of ataxia telangiectasia mutated (ATM) and Wip1 variables, and studies the impact of p53-regulators on cell fate decision. First, the authors identify a 6D core oscillator module, then reduce this module into a 2D oscillator model while preserving the qualitative behaviours. The introduced 2D model is shown to be an excitable relaxation oscillator. This oscillator provides a mechanism that leads diverse modes underpinning cell fate, each corresponding to a cell state. To investigate the effects of p53 inhibitors and the intrinsic time delay of Wip1 on the characteristics of oscillations, they introduce also a delay differential equation version of the 2D oscillator. They observe that the suppression of p53 inhibitors decreases the amplitudes of p53 oscillation, though the suppression increases the sustained level of p53. They identify Wip1 and P53DINP1 as possible targets for cancer therapies considering their impact on the oscillator, supported by biological findings. They model some mutations as critical changes of the phase space characteristics. Possible cancer therapeutic strategies are then proposed for preventing these mutations' effects using the phase space approach.
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Affiliation(s)
- Gökhan Demirkıran
- The Graduate School of Natural and Applied Sciences, Dokuz Eylül University, Buca, İzmir 35160, Turkey.
| | - Güleser Kalaycı Demir
- Department of Electrical and Electronics Engineering, Dokuz Eylül University, Buca, İzmir 35160, Turkey
| | - Cüneyt Güzeliş
- Department of Electrical-Electronics Engineering, Yaşar University, Bornova, İzmir 35100, Turkey
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Maheshwari R, Tekade M, Gondaliya P, Kalia K, D'Emanuele A, Tekade RK. Recent advances in exosome-based nanovehicles as RNA interference therapeutic carriers. Nanomedicine (Lond) 2017; 12:2653-2675. [DOI: 10.2217/nnm-2017-0210] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
RNA interference (RNAi) therapeutics (siRNA, miRNA, etc.) represent an emerging medicinal remedy for a variety of ailments. However, their low serum stability and low cellular uptake significantly restrict their clinical applications. Exosomes are biologically derived nanodimensional vesicle ranging from a few nanometers to a hundred. In the last few years, several reports have been published demonstrating the emerging applications of these exogenous membrane vesicles, particularly in carrying different RNAi therapeutics to adjacent or distant targeted cells. In this report, we explored the numerous aspects of exosomes from structure to clinical implications with special emphasis on their application in delivering RNAi-based therapeutics. siRNA and miRNA have attracted great interest in recent years due to their specific application in treating many complex diseases including cancer. We highlight strategies to obviate the challenges of their low bioavailability for gene therapy.
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Affiliation(s)
- Rahul Maheshwari
- National Institute of Pharmaceutical Education & Research (NIPER) – Ahmedabad, Palaj, Opposite Air Force Station, Gandhinagar 382355, Gujarat, India
| | - Muktika Tekade
- TIT College of Pharmacy, Technocrats Institute of Technology Campus, Anand Nagar, Raisen Road, Bhopal 462021, Madhya Pradesh, India
| | - Piyush Gondaliya
- National Institute of Pharmaceutical Education & Research (NIPER) – Ahmedabad, Palaj, Opposite Air Force Station, Gandhinagar 382355, Gujarat, India
| | - Kiran Kalia
- National Institute of Pharmaceutical Education & Research (NIPER) – Ahmedabad, Palaj, Opposite Air Force Station, Gandhinagar 382355, Gujarat, India
| | - Antony D'Emanuele
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester, LE1 9BH, UK
| | - Rakesh Kumar Tekade
- National Institute of Pharmaceutical Education & Research (NIPER) – Ahmedabad, Palaj, Opposite Air Force Station, Gandhinagar 382355, Gujarat, India
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