Expression of p53, p21 CIP1/WAF1 and eIF4E in the adjacent tissues of oral squamous cell carcinoma: establishing the molecular boundary and a cancer progression model
Yi Li , Bo Li , Bo Xu , Bo Han , Hui Xia , Qian-Ming Chen , Long-Jiang Li
International Journal of Oral Science ›› 2015, Vol. 7 ›› Issue (3) : 161 -168.
Expression of p53, p21 CIP1/WAF1 and eIF4E in the adjacent tissues of oral squamous cell carcinoma: establishing the molecular boundary and a cancer progression model
Surgical removal of apparently normal tissue adjacent to oral squamous cell carcinoma (OSCC) tumors could improve patient outcomes. OSCC is the most common oral cancer and survival rates are only around 50%, mainly due to local recurrence. Long-Jiang Li, at Sichuan University, Chengdu, China, and colleagues, examined 50 biopsy samples from patients treated for OSCC and found that tissues up to 2 cm away from the visible border of the tumor could be pre-cancerous. A gradual decrease in the expression of cancer-related molecules from the tumor to surrounding tissue suggests that some cells, despite their normal appearance, have begun to transform into tumor-forming cells. By determining the molecular boundary of OSCC tumors, these findings help to establish a safer surgical margin which fully removes precancerous tissue and thus lowers the risk of recurrence.
eIF4E / molecular boundary / oral squamous cell carcinoma / p21 / p53
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