CD 44 variant 6 is correlated with peritoneal dissemination and poor prognosis in patients with advanced epithelial ovarian cancer
| Autor: | Shingo Tayama, Isao Sakaguchi, Ritsuo Honda, Hironori Tashiro, Jianying Guo, Francisca Tjhay, Koichi Fujimoto, Hidetaka Katabuchi, Takeshi Motohara, Dashdemberel Narantuya |
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| Rok vydání: | 2015 |
| Předmět: |
Oncology
CA15-3 Cancer Research Tumor initiation Carcinoma Ovarian Epithelial Metastasis Mice Neoplasms Glandular and Epithelial CD44 Peritoneal Neoplasms Ovarian Neoplasms Mice Inbred BALB C biology General Medicine Middle Aged Cadherins ovarian cancer Hyaluronan Receptors Treatment Outcome peritoneal metastasis Neoplastic Stem Cells Female Peritoneum medicine.medical_specialty Epithelial-Mesenchymal Transition Mice Nude Cancer stem cell Cell Line Tumor Internal medicine Biomarkers Tumor Cell Adhesion medicine Animals Humans Vimentin Cell Proliferation business.industry Ovary Cancer Original Articles medicine.disease Fibronectins Drug Resistance Neoplasm Cancer cell biology.protein prognosis business Ovarian cancer |
| Zdroj: | Cancer Science |
| ISSN: | 1349-7006 1347-9032 |
| DOI: | 10.1111/cas.12765 |
| Popis: | Cancer stem cells (CSCs) drive tumor initiation and metastasis in several types of human cancer. However, the contribution of ovarian CSCs to peritoneal metastasis remains unresolved. The cell adhesion molecule CD44 has been identified as a major marker for CSCs in solid tumors, including epithelial ovarian cancer. CD44 exists as a standard form (CD44s) and also as numerous variant isoforms (CD44v) generated by alternative mRNA splicing. Here we show that disseminated ovarian tumors in the pelvic peritoneum contain highly enriched CD44v6-positive cancer cells, which drive tumor metastasis and are responsible for tumor resistance to chemotherapy. Clinically, an increased number of CD44v6-positive cancer cells in primary tumors was associated with a shortened overall survival in stage III-IV ovarian cancer patients. Furthermore, a subpopulation of CD44v6-positive cancer cells manifested the ability to initiate tumor metastasis in the pelvic peritoneum in an in vivo mouse model, suggesting that CD44v6-positive cells show the potential to serve as metastasis-initiating cells. Thus, the peritoneal disseminated metastasis of epithelial ovarian cancer is initiated by the CD44v6-positive subpopulation, and CD44v6 expression is a biomarker for the clinical outcome of advanced ovarian cancer patients. Given that a distinct subpopulation of CD44v6-positive cancer cells plays a critical role in peritoneal metastasis, definitive treatment should target this subpopulation of CD44v6-positive cells in epithelial ovarian cancer. |
| Databáze: | OpenAIRE |
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