Anillin is a highly conserved multi-domain cytoskeletal protein that provides a spatial and temporal scaffold for contractile ring proteins to ensure successful cytokinesis. We have looked at the temporal order of anillin and septin recruitment to the cleavage furrow using time-lapse microscopy and found that anillin localizes to the furrow in early anaphase while septins appear there later in an anillin-dependent manner. We also characterized the effect of anillin depletion in different cell lines and observed that septins and myosin delocalize in the absence of anillin in Tet-ON HeLa, AD293 and ARPE-19 cells but not in wild type HeLa cells. Asymmetric furrow formation was also investigated using the epithelial cell model: MDCK cells. Depletion of anillin and SEPT9 in MDCK cells was achieved using lentivirus shRNA constructs and this revealed that anillin or SEPT9 depletion did not affect asymmetric cytokinesis, although localization of SEPT 9 was affected by anillin depletion.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/33122 |
| Date | 30 October 2012 |
| Creators | Heshmati, Fatemeh |
| Contributors | Trimble, William S. |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis, Animation |
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