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Published on: October 8, 2021
Manipulation of biological systems by self-defecting and foreign agents
Evgeniya V Shmeleva1, Michael Levin2
1Allen Discovery Center at Tufts University, Tufts University, 200 College Ave., Medford, MA 02155, USA.
Biological systems are manipulated through a six-step process, exploiting vulnerabilities in host defenses and communication. This framework helps understand how pathogens, tumors, and parasites establish and maintain control within host systems.
Area of Science:
- Integrates insights from immunology, developmental biology, neuroscience, oncology, and ecology.
- Focuses on biological manipulation as a staged control problem across multiple scales.
- Applies a hierarchical control framework to understand host-system interactions.
Background:
- Biological systems rely on hierarchical control, redundancy, and surveillance for stability.
- These features create vulnerabilities exploitable by foreign or self-defecting agents.
- Examples include pathogens, parasites, trophoblasts, cancer, and insects.
Purpose of the Study:
- To synthesize evidence across disciplines to understand biological manipulation.
- To propose a six-step framework for analyzing manipulation as a staged control problem.
- To identify recurrent vulnerabilities and guide stage-specific experimental research.
Main Methods:
- Systematic review synthesizing evidence from immunology, developmental biology, neuroscience, oncology, and ecology.
- Development of a six-step framework detailing manipulator strategies.
- Illustration of the framework with four diverse case studies.
Main Results:
- A six-step framework is outlined: access, boundary interference, plasticity exploitation, communication redirection, structural remodeling, and state stabilization.
- The framework distinguishes between initiation and maintenance mechanisms of manipulation.
- Recurrent vulnerabilities in host boundaries, signaling, and plasticity windows are highlighted.
Conclusions:
- Biological manipulation can be understood as a staged control problem.
- The framework provides a unified view of diverse manipulation strategies.
- Understanding these stages and vulnerabilities can inform experimental design and therapeutic strategies for diseases and ecological interactions.
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