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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Cancer-induced immunosuppression can enable effectiveness of immunotherapy through bistability generation : a mathematical and computational examination
Authors: Garcia, Victor
Bonhoeffer, Sebastian
Fu, Feng
et. al: No
DOI: 10.1016/j.jtbi.2020.110185
Published in: Journal of Theoretical Biology
Volume(Issue): 492
Issue: 110185
Issue Date: 6-Feb-2020
Publisher / Ed. Institution: Elsevier
ISSN: 0022-5193
Language: English
Subjects: Cancer; Cancer-immune system interaction; Immunotherapy; Mathematical modeling
Subject (DDC): 616: Internal medicine and diseases
Abstract: Cancer immunotherapies rely on how interactions between cancer and immune system cells are constituted. The more essential to the emergence of the dynamical behavior of cancer growth these interactions are, the more effectively they may be used as mechanisms for interventions. Mathematical modeling can help unearth such connections, and help explain how they shape the dynamics of cancer growth. Here, we explored whether there exist simple, consistent properties of cancer-immune system interaction (CISI) models that might be harnessed to devise effective immunotherapy approaches. We did this for a family of three related models of increasing complexity. To this end, we developed a base model of CISI, which captures some essential features of the more complex models built on it. We find that the base model and its derivates can plausibly reproduce biological behavior that is consistent with the notion of an immunological barrier. This behavior is also in accord with situations in which the suppressive effects exerted by cancer cells on immune cells dominate their proliferative effects. Under these circumstances, the model family may display a pattern of bistability, where two distinct, stable states (a cancer-free, and a full-grown cancer state) are possible. Increasing the effectiveness of immune-caused cancer cell killing may remove the basis for bistability, and abruptly tip the dynamics of the system into a cancer-free state. Additionally, in combination with the administration of immune effector cells, modifications in cancer cell killing may be harnessed for immunotherapy without the need for resolving the bistability. We use these ideas to test immunotherapeutic interventions in silico in a stochastic version of the base model. This bistability-reliant approach to cancer interventions might offer advantages over those that comprise gradual declines in cancer cell numbers.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Computational Life Sciences (ICLS)
Published as part of the ZHAW project: Exploring the silent fitness landscape
Appears in collections:Publikationen Life Sciences und Facility Management

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