KIAA0319 influences cilia length, cell migration and mechanical cell-substrate interaction.

KIAA0319 influences cilia length, cell migration and mechanical cell-substrate interaction.
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KIAA0319 影响纤毛长度、细胞迁移和机械细胞-基质相互作用。

DOI:
10.1038/s41598-021-04539-3
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发表时间:
2022-01-14
期刊:
影响因子:
4.6
通讯作者:
Paracchini S
Paracchini S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Diaz R;Kronenberg NM;Martinelli A;Liehm P;Riches AC;Gather MC;Paracchini S

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在多项基因研究发现其与阅读障碍相关之后,KIAA0319基因已在不同的动物模型中得到广泛研究,但其在神经发育中的功能仍知之甚少。我们通过CRISPR - Cas9n技术在RPE1视网膜色素上皮细胞中建立了首个KIAA0319基因的人类细胞敲除模型,以研究其在先前研究中提出但未被证实的过程中的作用,包括纤毛形成和细胞迁移。我们观察到在KIAA0319基因敲除的细胞中,纤毛长度增加,细胞迁移加速。利用弹性共振干涉应力显微镜(ERISM),我们检测到敲除细胞的细胞力增加,而通过挽救实验这种力得以恢复。结合ERISM和免疫染色,我们发现RPE1细胞通过富含肌动蛋白的突起施加高度动态的皮牛顿级垂直推力,这些突起周围是富含纽蛋白的拉力位点。这种蛋白质排列和力的模式先前在其他细胞中与足体相关。KIAA0319基因的缺失减少了形成这些富含肌动蛋白突起的细胞比例。我们的研究结果表明KIAA0319参与了纤毛生物学和细胞 - 基质力的调节。
Following its association with dyslexia in multiple genetic studies, the KIAA0319 gene has been extensively investigated in different animal models but its function in neurodevelopment remains poorly understood. We developed the first human cellular knockout model for KIAA0319 in RPE1 retinal pigment epithelia cells via CRISPR-Cas9n to investigate its role in processes suggested but not confirmed in previous studies, including cilia formation and cell migration. We observed in the KIAA0319 knockout increased cilia length and accelerated cell migration. Using Elastic Resonator Interference Stress Microscopy (ERISM), we detected an increase in cellular force for the knockout cells that was restored by a rescue experiment. Combining ERISM and immunostaining we show that RPE1 cells exert highly dynamic, piconewton vertical pushing forces through actin-rich protrusions that are surrounded by vinculin-rich pulling sites. This protein arrangement and force pattern has previously been associated to podosomes in other cells. KIAA0319 depletion reduces the fraction of cells forming these actin-rich protrusions. Our results suggest an involvement of KIAA0319 in cilia biology and cell–substrate force regulation.
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