在Bacillus subtilis生物膜中的代谢信号振荡的基于代理的模型
Obadiah J Mulder1, Maya Peters Kostman2, Abdulrahmen Almodaimegh2
1Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA.
bioRxiv : the preprint server for biology
|January 7, 2025
概括
基于代理的模型揭示了细胞变异如何影响生物膜通信. 细菌细菌生物膜中的振荡确保了营养的均分布,防止了核心的饥饿.
科学领域:
- 微生物学 微生物学
- 计算生物学 计算生物学
- 生物物理学的生物物理.
背景情况:
- 微生物生物膜是细胞群落,包裹在一个自我生产的基质.
- 细胞变异对集体行为的影响,如生物膜中细胞对细胞的信号传递,尚未得到充分理解.
研究的目的:
- 通过使用计算建模,研究细胞变异如何影响生物膜中的殖民地级行为.
- 在Bacillus subtilis生物膜中建模代谢驱动的电化学信号.
主要方法:
- 开发了一种基于代理的计算模型,模拟细胞代谢和电化学信号.
- 单个细胞膜潜力与新陈代谢和营养水平相结合.
- 模拟生物膜生长和营养动态.
主要成果:
- 集体膜电位振荡在模拟生物膜中自发发生.
- 振荡导致营养物质分布均,与非振荡生物膜的饥饿核心形成鲜明对比.
- 生物膜与外部比与谷氨酸更强烈地同步.
结论:
- 基于代理的模型可以将细胞特性与集体生物膜现象联系起来.
- 电化学信号和振荡在生物膜营养分发和同步中起着关键作用.
- 这项工作为研究基于遗传细胞特征的生物膜中的群体行为演变提供了一个框架.
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