Multiscale positive feedbacks contribute to unidirectional gastric disease progression induced by helicobacter pylori infection
| Autor: | Tongli Zhang, Richard Ballweg, Logan Spotts, Kelsey H. Elliott, Eitaro Aihara, Alexander Kuhn, Frederick Schozer |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Systems biology Population Bioinformatics Helicobacter Infections 03 medical and health sciences Immune system Structural Biology Stomach Neoplasms medicine Humans Hedgehog Proteins education Molecular Biology lcsh:QH301-705.5 education.field_of_study biology Helicobacter pylori Applied Mathematics Cancer Cell cycle Models Theoretical biology.organism_classification medicine.disease Hedgehog signaling pathway Computer Science Applications 030104 developmental biology lcsh:Biology (General) Modeling and Simulation Host-Pathogen Interactions Cancer research Disease Progression Restriction point Research Article |
| Zdroj: | BMC Systems Biology, Vol 11, Iss 1, Pp 1-12 (2017) BMC Systems Biology |
| ISSN: | 1752-0509 |
| Popis: | Background Helicobacter Pylori (HP) is the most common risk factor for gastric cancer. Nearly half the world’s population is infected with HP, but only a small percentage of those develop significant pathology. The bacteria itself does not directly cause cancer; rather it promotes an environment that is conducive to tumor formation. Upon infection, HP induces transcriptional changes in the host, leading to enhanced proliferation and host immune response. In addition, HP causes direct damage to gastric epithelial cells. Results We present a multiscale mechanistic model of HP induced changes. The model includes four modules representing the host transcriptional changes in response to infection, gastric atrophy, the Hedgehog pathway response, and the restriction point that controls cell cycle. This model was able to recapture a number of literature reported observations and was used as an “in silico” representation of the biological system for further analysis. Dynamical analysis of the model revealed that HP might induce the activation of multiple interplayed positive feedbacks, which in turn might result in a “ratchet ladder” system that promotes a unidirectional progression of gastric disease. Conclusions The current multiscale model is able to recapitulate the observed experimental features of HP host interactions and provides dynamic insights on the epidemiologically observed heterogeneity in disease progression. This model provides a solid framework that can be further expanded and validated to include additional experimental evidence, to understand the complex multi-pathway interactions characterizing HP infection, and to design novel treatment protocols for HP induced diseases. Electronic supplementary material The online version of this article (10.1186/s12918-017-0497-y) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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