Rab11 endosomes and Pericentrin coordinate centrosome movement during pre-abscission in vivo
The last stage of cell division involves two daughter cells remaining interconnected by a cytokinetic bridge that is cleaved during abscission. Conserved between the zebrafish embryo and human cells, we found that the oldest centrosome moves in a Rab11-dependent manner towards the cytokinetic bridge...
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| Veröffentlicht in: | Life science alliance 2022-07, Vol.5 (7), p.e202201362 |
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| creator | Krishnan, Nikhila Swoger, Maxx Rathbun, Lindsay I Fioramonti, Peter J Freshour, Judy Bates, Michael Patteson, Alison E Hehnly, Heidi |
| description | The last stage of cell division involves two daughter cells remaining interconnected by a cytokinetic bridge that is cleaved during abscission. Conserved between the zebrafish embryo and human cells, we found that the oldest centrosome moves in a Rab11-dependent manner towards the cytokinetic bridge sometimes followed by the youngest. Rab11-endosomes are organized in a Rab11-GTP dependent manner at the mother centriole during pre-abscission, with Rab11 endosomes at the oldest centrosome being more mobile compared with the youngest. The GTPase activity of Rab11 is necessary for the centrosome protein, Pericentrin, to be enriched at the centrosome. Reduction in Pericentrin expression or optogenetic disruption of Rab11-endosome function inhibited both centrosome movement towards the cytokinetic bridge and abscission, resulting in daughter cells prone to being binucleated and/or having supernumerary centrosomes. These studies suggest that Rab11-endosomes contribute to centrosome function during pre-abscission by regulating Pericentrin organization resulting in appropriate centrosome movement towards the cytokinetic bridge and subsequent abscission. |
| doi_str_mv | 10.26508/lsa.202201362 |
| format | Article |
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| subjects | Animals Antigens Centrosome - metabolism Endosomes - metabolism rab GTP-Binding Proteins - genetics rab GTP-Binding Proteins - metabolism Zebrafish |
| title | Rab11 endosomes and Pericentrin coordinate centrosome movement during pre-abscission in vivo |
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