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  4. Extensive programmed centriole elimination unveiled in C. elegans embryos
 
research article

Extensive programmed centriole elimination unveiled in C. elegans embryos

Kalbfuss, Nils  
•
Gonczy, Pierre  
June 2, 2023
Science Advances

Centrioles are critical for fundamental cellular processes, including signaling, motility, and division. The extent to which centrioles are present after cell cycle exit in a developing organism is not known. The stereotypical lineage of Caenorhabditis elegans makes it uniquely well-suited to investigate this question. Using notably lattice light-sheet microscopy, correlative light electron microscopy, and lineage assignment, we found that similar to 88% of cells lose centrioles during embryogenesis. Our analysis reveals that centriole elimination is stereo-typed, occurring invariably at a given time in a given cell type. Moreover, we established that experimentally altering cell fate results in corresponding changes in centriole fate. Overall, we uncovered the existence of an extensive centriole elimination program, which we anticipate to be paradigmatic for a broad understanding of centriole fate regulation.

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