果蝇单眼形成周期性排布图式的基本原理

来源 :第二届中国果蝇大会 | 被引量 : 0次 | 上传用户:tonyyu9
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  神奇的昆虫复眼为研究周期性排布图式提供了一个理想的模型。尽管对果蝇眼睛发育的研究有超过三十多年的历史,对眼睛发育过程相关的基因调控网络、信号网络有很好的研究积累,但是至今尚未能清晰深刻地阐述周期性排布图式生成的基本原理。利用多种活体报告基因,我们在单细胞精度下对发育的眼盘进行跟踪观测,结合数学模型以及果蝇遗传学剖析了侧向抑制在周期性排布图式形成过程中的基本原理:我们展示了实现侧向抑制的必要因素的4D动态变化及其间的数学逻辑关系,我们还揭示了这些因素的协调组合如何实现周期性排布的精确性以及抗干扰能力。我们还讨论了不同维度的周期性图式对侧向抑制必要因素的要求。
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