Kif18A is involved in human breast carcinogenesis
Chunpeng Zhang1, Changjun Zhu, Hongyan Chen
1State Key Laboratory of Molecular Oncology and Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Sciences, Beijing 100021, China.
Carcinogenesis
|July 3, 2010
Summary
Kif18A, a microtubule (MT) kinesin, is overexpressed in breast cancers, correlating with poor survival. Inhibiting Kif18A reduces cancer cell proliferation and migration, suggesting it as a potential therapeutic target.
Area of Science:
- Molecular Biology
- Cell Biology
- Oncology
Background:
- Microtubule (MT) kinesin motor proteins are crucial for cellular functions including mitosis and transport.
- Kif18A, a specific kinesin, regulates MT dynamics, chromosome alignment, and cell division.
- Aberrant MT dynamics and kinesin function are linked to human carcinogenesis.
Purpose of the Study:
- To investigate the role of Kif18A in human breast cancer development and progression.
- To determine the association between Kif18A expression levels and clinical outcomes in breast cancer patients.
- To explore the functional impact of Kif18A modulation on breast cancer cell behavior.
Main Methods:
- Analysis of Kif18A expression in human breast cancer tissues.
- Correlation studies between Kif18A levels and clinicopathological features (tumor grade, metastasis, survival).
- In vitro and in vivo functional assays involving Kif18A overexpression and ablation in breast cancer cells.
- Investigation of downstream signaling pathways, including the phosphatidylinositol 3-kinase-Akt pathway.
Main Results:
- Kif18A is significantly overexpressed in human breast cancers.
- Elevated Kif18A expression correlates with higher tumor grade, metastasis, and poorer patient survival.
- Ectopic Kif18A expression leads to cell multinucleation.
- Kif18A ablation suppresses breast cancer cell proliferation in vitro and in vivo.
- Kif18A inhibition impairs cancer cell migration by stabilizing MTs and induces anoikis via Akt pathway inactivation.
Conclusions:
- Kif18A plays a significant role in human breast carcinogenesis.
- Kif18A overexpression is a marker of aggressive breast cancer with poor prognosis.
- Targeting Kif18A presents a potential therapeutic strategy for breast cancer treatment.
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