Cancer stem cell self-renewal as a therapeutic target in human oral cancer.

Tumor recurrence following treatment remains a major clinical challenge in oral cavity cancer. Cancer stem cells (CSCs) have been isolated from human oral cancers and been considered as the driving force of tumor recurrence and metastasis. However, it still remains unclear whether targeting CSCs in oral cancer is a clinically relevant strategy to combat cancer recurrence and metastasis.

Subpopulations of cancer stem cells found in papillary thyroid carcinoma.

Papillary thyroid carcinoma (PTC) is the most common form of thyroid cancer and while it has a generally good prognosis, tumor recurrence remains a major clinical challenge. Studying laboratory cell lines as well as clinical specimens indicate that PTC may follow the cancer stem cell (CSC) model. However, CSC characteristics relevant in PTC initiation and progression remain largely unknown.