Abstract
We explored the expression of the stem cell markers OCT4 and nestin in laryngeal squamous cell carcinoma (LSCC) and investigated their relationship to survivin expression.Eighty-five LSCC, and 62 non-neoplastic laryngeal tissues were analyzed immunohistochemically for the presence of OCT4, nestin and survivin. Marker expression was correlated to clinicopathological parameters. The positive detection rates of OCT4 (42.35%) and nestin (51.76%) in LSCC were higher than those of non-neoplastic mucosa (p<0.05). OCT4 expression was positively associated with nestin expression (p=0.0001). High expression of both OCT4 and nestin was associated with higher tumor grade (p=0.0001). Also, high OCT4 expression was related to higher T stage (p=0.0001). Co-expression of OCT4 and nestin was more significantly associated with glottic location, higher T stage and nodal metastasis than high expression of either marker (p=0.015, 0.006 and 0.008, respectively). Survivin expression was not significantly related to expression of OCT4 or nestin (p=0.094 and 0.266, respectively).OCT4 and nestin are overexpressed in LSCC and may contribute to laryngeal carcinogenesis. Their co-expression may help to predict the lymph node metastatic potential of LSCC. No relationship was detected between expression of survivin and OCT4 or nestin.
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