Related Experiment Video
Updated: May 6, 2026
Evaluation of Stem Cell Properties in Human Ovarian Carcinoma Cells Using Multi and Single Cell-based Spheres Assays
Published on: January 3, 2015
Ovarian and breast cancer spheres are similar in transcriptomic features and sensitive to fenretinide
Haiwei Wang1, Yuxing Zhang, Yanzhi Du
1Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS) and Shanghai Jiao Tong University School of Medicine (SJTU-SM), 225 Chong-Qing South Road, Shanghai 200025, China ; Graduate School of the Chinese Academy of Sciences, Beijing 100049, China.
Abstract:
Cancer stem cells (CSCs) are resistant to chemotherapy and are ability to regenerate cancer cell populations, thus attracting much attention in cancer research. In this report, we first demonstrated that sphere cells from ovarian cancer cell line A2780 shared many features of CSCs, such as resistance to cisplatin and able to initiate tumors in an efficient manner. Then, we conducted cDNA microarray analysis on spheres from ovarian A2780 cells, and from breast MCF7 and SUM159 cells, and found that molecular pathways underlying spheres from these cancer cell lines were similar to a large extent, suggesting that similar mechanisms are involved in the genesis of CSCs in both ovarian and breast cancer types. In addition, we showed that spheres from these cancer types were highly sensitive to fenretinide, a stimulus of oxidative stress-mediated apoptosis in cancer cells. Thus, our results not only provide important insights into mechanisms underlying CSCs in ovarian and breast cancer, but also lead to the development of more sophisticated protocols of cancer therapy in near future.
Insights
Cancer stem cells (CSCs) exhibit chemotherapy resistance and tumor regeneration capabilities. This study identifies shared CSC mechanisms in ovarian and breast cancers, highlighting fenretinide as a potential therapeutic agent.
Area of Science:
- Oncology
- Cancer Biology
- Cellular Mechanisms
Background:
- Cancer stem cells (CSCs) are crucial drivers of tumor growth and treatment resistance.
- Understanding CSC heterogeneity and therapeutic vulnerabilities is critical for effective cancer treatment.
Purpose of the Study:
- To characterize sphere cells from ovarian and breast cancer cell lines as models for CSCs.
- To investigate the molecular pathways involved in CSC genesis across different cancer types.
- To evaluate the efficacy of fenretinide as a potential CSC-targeting therapy.
Main Methods:
- Characterization of ovarian cancer sphere cells for CSC features (drug resistance, tumor initiation).
- cDNA microarray analysis of sphere cells from ovarian and breast cancer lines.
- Assessment of fenretinide sensitivity in cancer sphere cells.
Main Results:
- Ovarian cancer sphere cells displayed key CSC characteristics, including cisplatin resistance and efficient tumor initiation.
- Molecular pathway analysis revealed significant similarities in CSC genesis between ovarian and breast cancer cells.
- Cancer sphere cells demonstrated high sensitivity to fenretinide, inducing oxidative stress-mediated apoptosis.
Conclusions:
- Shared molecular mechanisms underlie CSC development in ovarian and breast cancers.
- Fenretinide shows promise as a therapeutic agent targeting CSCs through oxidative stress induction.
- These findings offer insights for developing novel cancer therapies targeting CSCs.
