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Updated: Jun 10, 2026
08:29
Long-term Live-cell Imaging to Assess Cell Fate in Response to Paclitaxel
Published on: May 14, 2018
The centrosomal protein TACC3 controls paclitaxel sensitivity by modulating a premature senescence program
S Schmidt1, L Schneider, F Essmann
1Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany.
Oncogene
|August 24, 2010
Summary
Targeting the centrosomal protein TACC3 in cancer cells triggers a senescence response, not cell death. Combining TACC3 inhibition with microtubule-interfering drugs may enhance cancer chemotherapy effectiveness.
Area of Science:
- Oncology
- Cell Biology
- Molecular Medicine
Background:
- Microtubule-interfering drugs like paclitaxel (PTX) can cause chemoresistance and neurotoxicity.
- Novel antineoplastic targets are needed to overcome these limitations.
Purpose of the Study:
- To investigate the cellular response to depleting the centrosomal protein TACC3 in breast carcinoma cells.
- To explore TACC3 as a potential therapeutic target in cancer treatment.
Main Methods:
- Short hairpin (sh)RNA-mediated depletion of TACC3 in breast carcinoma cells.
- Analysis of cell death pathways, cell cycle progression, and senescence markers.
- Assessment of combined effects with non-toxic PTX concentrations.
Main Results:
- TACC3 depletion induced G1 cell cycle arrest and a senescence program, not cell death.
- Loss of the pro-apoptotic protein Bim was observed following TACC3 knockdown.
- Senescence was accelerated by combining TACC3 knockdown with low-dose PTX.
Conclusions:
- Mitotic spindle stress, triggered by TACC3 targeting, is a key inducer of premature senescence.
- Combined targeting of the Aurora A-TACC3 axis and microtubule dynamics may enhance cancer cell chemosensitivity.
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