CIL:37329

The video shows a cytoplast that is adhering to a sub-stratum in its central portion. It is also connected by a retraction fiber to its central cell. The cytoplast is engaging in vigorous protrusive activity around its periphery. The small lamellipodia is undergoing ruffling--extensions, folding back, and re-entry of the the protrusion into the main process of the cell. This demonstrates that an anucleate fragment of a cell has the capacity to nucleate actin, engage in ruffling, and retrograde flows. CIL 37336 and 37337 show that these fragments have the capacity to undergo directional locomotion. Video made available by Mark Cooper thru Zebrafish - The Living Laboratory.

本视频展示了一个胞质体（cytoplast）：其中央区域粘附于底物（substratum）之上，同时通过收缩纤维连接至自身的中央细胞。该胞质体的周边区域正进行活跃的突出活动，其中小型片状伪足（lamellipodia）正发生膜褶皱现象——即突起结构延伸、折返并重新嵌入细胞主体突起之中。这一现象表明，细胞的无核片段具备肌动蛋白成核、引发膜褶皱以及产生逆行流动的能力。细胞图像库（Cell Image Library，下文简称CIL）编号37336与37337的相关数据证实，此类无核片段具备定向运动的潜能。本视频由Mark Cooper通过《斑马鱼——活的实验室》（Zebrafish - The Living Laboratory）平台发布。