反应扩散在脊椎动物皮肤颜色图案中的不合理有效性
Michel C Milinkovitch1, Ebrahim Jahanbakhsh1, Szabolcs Zakany1
1Laboratory of Artificial and Natural Evolution, Department of Genetics and Evolution, University of Geneva, Geneva, Switzerland;
Annual review of cell and developmental biology
|October 16, 2023
概括
反应-扩散模型通过模拟物理化学原理来解释生物模式的形成,如皮肤颜色. 这些模型有效地捕捉复杂的动态,而不需要低级别的细节,验证了艾伦·图灵的框架.
科学领域:
- 发展生物学 发展生物学
- 数学生物学 数学生物学
- 形态发生 形态发生 形态发生
背景情况:
- 艾伦·图灵的1952年反应扩散 (RD) 框架建立了形态发生作为一个自组织的过程,从物理化学原理.
- 尽管它具有根本性的重要性,但RD方法在发育生物学中面临怀疑.
- 仍然存在误解,即 RD 模型仅仅是人工的数学构造,而不是生物相关的框架.
研究的目的:
- 为了澄清图灵的原始思维路线,消除 RD 是人工构造的概念.
- 证明现象学RD模型在解释宏观皮肤颜色模式方面的有效性.
- 通过展示其回顾,预测和解释各种生物模式的能力来验证 RD 模型.
主要方法:
- 总结艾伦·图灵对反应扩散系统的概念化.
- 讨论现象学RD模型,以分析皮肤图案在中/宏观尺度.
- 数字模拟和线性稳定性分析,以证明混沌微观剂的新兴决定性 RD.
主要成果:
- RD模型有效地回顾了物种间实际皮肤模式的多样性.
- 这些模型捕捉了潜在的细胞相互作用动态及其通过组织大小和形状的影响.
- 研发与开发模型展示了强度,预测了超越统计特征的模式,并且可以产生细胞自动机动力.
结论:
- 现象学反应-扩散模型是理解形态发生,特别是皮肤模式的强大工具.
- 研发与开发模型为复杂的模式提供了节的解释,而不需要对许多低级变量进行参数化.
- 确定性的 RD 动态显然是从潜在的混乱的微观过程中产生的,支持图灵框架的生物相关性.
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