Related Experiment Video
Updated: May 16, 2026

06:44
Generation of Prostate Cancer Cell Models of Resistance to the Anti-mitotic Agent Docetaxel
Published on: September 8, 2017
Daxx regulates mitotic progression and prostate cancer predisposition
Pak Shing Kwan1, Chi Chiu Lau, Yung Tuen Chiu
1Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Qld, Australia.
Carcinogenesis
|December 15, 2012
Summary
Daxx is a novel inhibitor of the anaphase-promoting complex/cyclosome (APC/C) that is overexpressed in prostate cancer. This overexpression disrupts mitosis, potentially driving chromosome instability and cancer progression.
Area of Science:
- Cell Biology
- Molecular Oncology
- Cancer Research
Background:
- Mitotic progression in mammalian cells is regulated by the anaphase-promoting complex/cyclosome (APC/C), an E3 ubiquitin ligase.
- APC/C deregulation is linked to cancer, contributing to chromosome instability and predisposition.
Purpose of the Study:
- To identify novel regulators of APC/C in cancer.
- To investigate the role of Daxx as a potential APC/C inhibitor in prostate cancer development.
Main Methods:
- Investigated Daxx interaction with APC/C coactivators Cdc20 and Cdh1.
- Utilized ectopic expression of Daxx and its mutants in cell lines.
- Correlated Daxx expression with clinical parameters in prostate cancer tissues.
Main Results:
- Identified Daxx as a novel APC/C inhibitor overexpressed in prostate cancer.
- Daxx binds to Cdc20 and Cdh1, inhibiting substrate degradation and delaying mitosis.
- Daxx expression correlates with Gleason score and metastasis; ectopic expression induces polyploidy.
Conclusions:
- Daxx acts as an APC/C inhibitor, potentially promoting chromosome instability in prostate cancer.
- Upregulated Daxx may contribute to prostate cancer progression and metastasis.
More Related Videos
Related Concept Videos
Abnormal Proliferation
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Epigenetic Regulation
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
Negative Regulator Molecules
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
The Ras Gene
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a superfamily...
Ras is a superfamily...
mTOR Signaling and Cancer Progression
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...

