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细胞单层在具有拓缺陷的基板上的迁移和分裂
Kurmanbek Kaiyrbekov1, Kirsten Endresen1, Kyle Sullivan1
1William H. Miller III Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD 21218.
概括
细胞层的拓缺陷组织了组织的发育. 这项研究表明纤维细胞的增殖,而不是迁移,驱动这些缺陷的密度变化,提供新的模式策略.
科学领域:
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
- 材料科学是一种材料科学.
背景情况:
- 集体细胞运动对于组织发育和伤口愈合至关重要.
- 液晶秩序和拓缺陷,特别是+1缺陷,都与组织形态发生有关.
- 纤维细胞组织在有图案的基板上需要进一步的研究.
研究的目的:
- 为了研究纤维细胞组织,运动和扩散,在基板上有微米大小的脊柱,诱导拓缺陷.
- 确定驱动细胞密度在+1和-1拓缺陷附近变化的机制.
- 探索细胞分裂速率与组织模式中的集体迁移的作用.
主要方法:
- 模拟模拟细胞作为自行驱动的可变形圆与盖伊-伯恩相互作用.
- 关于纤维细胞组织的实验研究,这些研究是在基板上进行的,基板的脊柱高度各不相同.
- 对细胞密度,对齐,形态和扩散率在拓缺陷附近的分析.
主要成果:
- 细胞密度在缺陷附近的变化主要是由纤维细胞分裂率的差异驱动的,而不是集体迁移.
- 纤维细胞对齐质量在较高的细胞密度下降.
- 在+1缺陷中心,纤维细胞表现出高度异构或异构的形态.
- 抑制细胞跨的迁移可以在+1缺陷时增强细胞密度.
结论:
- 纤维细胞组织和在拓缺陷附近的密度由增殖率调节,由细胞形状和面积调节.
- 拓缺陷可以被用来模拟组织而不依赖于集体细胞迁移.
- 这为通过缺陷工程控制组织形态发生提供了一个新的机制.
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