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Mathematical models disentangle the role of IL-10 feedbacks in human monocytes upon proinflammatory activation
Örebro University, School of Medical Sciences.
Örebro University, School of Medical Sciences. (Inflammatory Response and Infection Susceptibility Centre (iRiSC))
Örebro University, School of Medical Sciences. Center for Medical Image Science and Visualization (CMIV), Linköping University, Linköping, Sweden. (Inflammatory Response and Infection Susceptibility Centre (iRiSC))ORCID iD: 0000-0001-9386-0568
Örebro University, School of Medical Sciences. (Inflammatory Response and Infection Susceptibility Centre (iRiSC))ORCID iD: 0000-0002-6045-4800
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2023 (English)In: Journal of Biological Chemistry, ISSN 0021-9258, E-ISSN 1083-351X, Vol. 299, no 10, article id 105205Article in journal (Refereed) Published
Abstract [en]

Inflammation is one of the vital mechanisms through which the immune system responds to harmful stimuli. During inflammation, pro and anti-inflammatory cytokines interplay to orchestrate fine-tuned, dynamic immune responses. The cytokine interplay governs switches in the inflammatory response and dictates the propagation and development of the inflammatory response. Molecular pathways underlying the interplay are complex, and time-resolved monitoring of mediators and cytokines is necessary as a basis to study them in detail. Our understanding can be advanced by mathematical models which enable to analyze the system of interactions and their dynamical interplay in detail. We, therefore, used a mathematical modeling approach to study the interplay between prominent pro and anti-inflammatory cytokines with a focus on tumor necrosis factor (TNF) and interleukin 10 (IL-10) in lipopolysaccharide (LPS)-primed primary human monocytes. Relevant time-resolved data were generated by experimentally adding or blocking IL-10 at different time points. The model was successfully trained and could predict independent validation data and was further used to perform simulations to disentangle the role of IL-10 feedbacks during an acute inflammatory event. We used the insight to obtain a reduced predictive model including only the necessary IL-10-mediated feedbacks. Finally, the validated reduced model was used to predict early IL-10 - TNF switches in the inflammatory response. Overall, we gained detailed insights into fine-tuning of inflammatory responses in human monocytes and present a model for further use in studying the complex and dynamic process of cytokine-regulated acute inflammation.

Place, publisher, year, edition, pages
Elsevier, 2023. Vol. 299, no 10, article id 105205
Keywords [en]
NF‐kappa B (NF‐κB), computational biology, computer modeling, cytokine, endotoxin, human monocytes, inflammation, interleukin 10 (IL-10), lipopolysaccharide (LPS), mathematical modeling, ordinary differential equations (ODE), signal transduction, systems biology, tumor necrosis factor (TNF)
National Category
Immunology in the medical area
Identifiers
URN: urn:nbn:se:oru:diva-108034DOI: 10.1016/j.jbc.2023.105205ISI: 001164667700001PubMedID: 37660912Scopus ID: 2-s2.0-85172191670OAI: oai:DiVA.org:oru-108034DiVA, id: diva2:1793862
Funder
Knowledge Foundation, 20200017Örebro UniversitySwedish Research Council, 2018-05418; 2018-03319; 2019-03767Swedish Foundation for Strategic Research, ITM17-0245Knut and Alice Wallenberg Foundation, 2020.0182Vinnova, 2020-04711Swedish Heart Lung FoundationÅke Wiberg Foundation, M19-0449; M21-0030; M22-0027
Note

The X-HiDE Consortium is funded by the Knowledge Foundation (20200017) and by strategic funding by Örebro University. G. C. acknowledges support from the Swedish Research Council (grant nos.: 2018-05418 and 2018-03319) , CENIIT (grant no.: 15.09) , the Swedish Foundation for Strategic Research (grant no.: ITM17-0245) , SciLifeLab National COVID-19 Research Program financed by the Knut and Alice Wallenberg Foundation (grant no.: 2020.0182) , the H2020 project PRECISE4Q (grant no.: 777107) , STRATIF-AI: the H-Europe project STRATIF-AI (grant no.: 101080875) , the Swedish Fund for Research Without Animal Experiments (grant no.: F2019-0010) , ELLIIT (grant no.: 2020-A12) , and VINNOVA (VisualSweden; grant no.: 2020-04711) . E. N. acknowledges support from the Swedish Research Council (grant no.: Dnr 2019-03767) , the Heart and Lung Foundation, CENIIT (grant no.: 20.08) , Ake Wibergs Stiftelse (grant nos.: M19-0449, M21-0030, and M22-0027) , and the Swedish Fund for Research Without Animal Experiments (grant no.: S2021-0008) . The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the article.r 03319) , CENIIT (grant no.: 15.09) , the Swedish Foundation for Strategic Research (grant no.: ITM17-0245) , SciLifeLab National COVID-19 Research Program financed by the Knut and Alice Wallenberg Foundation (grant no.: 2020.0182) , the H2020 project PRECISE4Q (grant no.: 777107) , STRATIF-AI: the H-Europe project STRATIF-AI (grant no.: 101080875) , the Swedish Fund for Research Without Animal Experiments (grant no.: F2019-0010) , ELLIIT (grant no.: 2020-A12) , and VINNOVA (VisualSweden; grant no.: 2020-04711) . E. N. acknowledges support from the Swedish Research Council (grant no.: Dnr 2019-03767) , the Heart and Lung Foundation, CENIIT (grant no.: 20.08) , Ake Wibergs Stiftelse (grant nos.: M19-0449, M21-0030, and M22-0027) , and the Swedish Fund for Research Without Animal Experiments (grant no.: S2021-0008) .

Available from: 2023-09-04 Created: 2023-09-04 Last updated: 2024-10-25Bibliographically approved
In thesis
1. Monocyte responses: implications for sepsis immunology
Open this publication in new window or tab >>Monocyte responses: implications for sepsis immunology
2024 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Dysregulated immune response is a key characteristic of sepsis immunology, with the current view recognizing concurrent proinflammatory and immunosuppressive responses. Monocytes are central to the immune and inflammatory responses in sepsis, and immunosuppressive monocytes observed in the blood of septic patients are linked to immunosuppression and adverse clinical outcomes. This thesis explores monocyte responses in inflammation and immunosuppressionin sepsis, utilizing a combination of in vitro and in silico monocyte models along with a cohort study of sepsis patients.

In the studied cohort, a more general set of immune markers did not improve sepsis identification whether alone or in combination with previously established screening tools based on clinical parameters, possibly due to the high collinearity between clinical and molecular parameters. A more targeted approach for identifying markers associated with immunosuppressive monocytes was applied by establishing an endotoxin tolerance model. We demonstrated a response profile consisting of soluble markers and upstream regulators in immunosuppressed primary human monocytes following repeated LPS stimulations. These response markers were then evaluated in the sepsis cohort, where lower levels of HLA-DRA expression and reduced TNF/IL-10 ratios were seen to be associated with sepsis. Notably, elevated levels of many of the investigated molecules could be detected before the clinical presentation of septic shock. Lastly, we established a computational model of human monocytes to study and demonstrate, in more detail, the interplay between TNF and IL-10. In conclusion, we demonstrated a response profile of the immunosuppressed monocytes, with molecules associated with sepsis and septic shock.

Place, publisher, year, edition, pages
Örebro: Örebro University, 2024. p. 67
Series
Örebro Studies in Medicine, ISSN 1652-4063 ; 298
Keywords
Monocyte, Inflammation, Sepsis, Immunosuppression
National Category
Other Basic Medicine
Identifiers
urn:nbn:se:oru:diva-114126 (URN)9789175295787 (ISBN)9789175295794 (ISBN)
Public defence
2024-10-25, Örebro universitet, Campus USÖ, hörsal X1, Södra Grev Rosengatan 32, Örebro, 13:00 (English)
Opponent
Supervisors
Available from: 2024-06-11 Created: 2024-06-11 Last updated: 2024-10-25Bibliographically approved

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Nikaein, NiloofarTuerxun, KayaCedersund, GunnarEklund, DanielKruse, RobertSärndahl, EvaNånberg, EewaThonig, AntjeRepsilber, DirkPersson, Alexander

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Nikaein, NiloofarTuerxun, KayaCedersund, GunnarEklund, DanielKruse, RobertSärndahl, EvaNånberg, EewaThonig, AntjeRepsilber, DirkPersson, Alexander
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