Modelling the spatiotemporal dynamics of senescent cells in wound healing, chronic wounds, and fibrosis
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View abstract on PubMed
Summary
This summary is machine-generated.Cellular senescence, involving the senescence-associated secretory phenotype (SASP), plays a dynamic role in wound healing. Its complex temporal regulation influences outcomes like fibrosis and chronic wounds.
Area Of Science
- Cellular and Molecular Biology
- Systems Biology
- Wound Healing Research
Background
- Cellular senescence, characterized by the senescence-associated secretory phenotype (SASP), is implicated in age-related diseases but also crucial for physiological processes like wound healing.
- Disrupted wound healing can lead to fibrosis and chronic wounds, highlighting the need to understand the role of senescent cells.
- Recent findings indicate temporally regulated SASP profiles, suggesting distinct fibrogenic and fibrolytic phases influencing tissue repair.
Purpose Of The Study
- To develop a multi-scale computational model of wound healing incorporating senescent cell dynamics and SASP composition.
- To investigate the complex interactions between senescent cell behavior, SASP, and the wound microenvironment.
- To elucidate how variations in senescent cell phenotypes and SASP influence diverse wound repair outcomes.
Main Methods
- A systems biology approach using a multi-scale model built with CompuCell3D, based on the Cellular Potts modelling framework.
- Model calibration using existing data from healthy wound healing processes.
- Model validation against known disease conditions related to impaired wound repair.
Main Results
- The model demonstrates that spatiotemporal dynamics of senescent cell phenotypes significantly impact wound repair outcomes.
- Variations in SASP composition, senescence duration, and timing of induction relative to healing stages drive distinct repair trajectories.
- The simulation highlights the heterogeneous and dynamic nature of senescent cells in determining healing, fibrosis, and chronic wound development.
Conclusions
- Senescent cells exert a finely tuned, dynamic, and heterogeneous influence on wound healing, fibrosis, and chronic wound pathogenesis.
- Understanding the temporal regulation of SASP is critical for deciphering the multifaceted role of senescent cells in tissue repair.
- Further data can refine models for exploring senolytic treatments for wound disorders.
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