論文 - 詳細
| RRC ID | 77267 |
|---|---|
| 著者 | Baba K, Uemura K, Nakazato R, Ijaz F, Takahashi S, Ikegami K. |
| タイトル | Δ3-tubulin impairs mitotic spindle morphology and increases nuclear size in pancreatic cancer cells. |
| ジャーナル | Med Mol Morphol |
| Abstract |
Cancer cell proliferation is affected by post-translational modifications of tubulin. Especially, overexpression or depletion of enzymes for modifications on the tubulin C-terminal region perturbs dynamic instability of the spindle body. Those modifications include processing of C-terminal amino acids of α-tubulin; detyrosination, and a removal of penultimate glutamic acid (Δ2). We previously found a further removal of the third last glutamic acid, which generates so-called Δ3-tubulin. The effects of Δ3-tubulin on spindle integrities and cell proliferation remain to be elucidated. In this study, we investigated the impacts of forced expression of Δ3-tubulin on the structure of spindle bodies and cell division in a pancreatic cancer cell line, PANC-1. Overexpression of HA-tagged Δ3-tubulin impaired the morphology and orientation of spindle bodies during cell division in PANC-1 cells. In particular, spindle bending was most significantly increased. Expression of EGFP-tagged Δ3-tubulin driven by the endogenous promoter of human TUBA1B also deformed and misoriented spindle bodies. Spindle bending and condensation defects were significantly observed by EGFP-Δ3-tubulin expression. Furthermore, EGFP-Δ3-tubulin expression increased the nuclear size in a dose-dependent manner of EGFP-Δ3-tubulin expression. The expression of EGFP-Δ3-tubulin tended to slow down cell proliferation. Taken together, our results demonstrate that Δ3-tubulin affects the spindle integrity and cell division. |
| 巻・号 | 57(1) |
| ページ | 59-67 |
| 公開日 | 2024-3-1 |
| DOI | 10.1007/s00795-023-00373-w |
| PII | 10.1007/s00795-023-00373-w |
| PMID | 37930423 |
| MeSH | Glutamates / metabolism Glutamates / pharmacology Humans Microtubules / metabolism Mitosis Pancreatic Neoplasms* / genetics Pancreatic Neoplasms* / metabolism Spindle Apparatus / genetics Spindle Apparatus / metabolism Tubulin* / genetics Tubulin* / metabolism |
| IF | 2.429 |
| オルトメトリクス指標 |
オルトメトリクス指標項目
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| 最多言及媒体 | X(Twitter) |
| 各媒体での言及数の合計 | 4 |
| 過去6か月間でのオルトメトリクス指標の変動値 | 0.0 |
| リソース情報 | |
| ヒト・動物細胞 | PANC-1(RCB2095) |