Objective: To investigate the protein expression and clinicopathological characteristics of ABCG2 , Oct4 , Nanog in laryngeal cancer tissues, and to seek new molecular markers for the diagnosis of laryngeal cancer. Methods: The laryngeal cancer tissues and paracancerous tissues of 87 patients with laryngeal carcinoma diagnosed in the department of otorhinolaryngology and head and neck surgery in our hospital from April 2016 to April 2018 were selected as the subjects. QRT-PCR, Real-time PcR, Western blot and immunohistochemical staining were used to detect the expression of ABCG2, Oct4 and Nanog in (Tumor Tissue) and (Adjacent Tissue) in tumor tissue and paracancerous tissue. Results: The results of RT-PCR showed that the positive rates of ABCG2, Oct4 and Nanog in laryngeal carcinoma tissues were 49.30%, 45.07% and 52.11%, respectively, while those in paracancerous tissues were 22.54%, 21.13% and 15.49%, respectively (P < 0.01). The expression of ABCG2, Oct4 and Nanog in laryngeal carcinoma was correlated with tumor differentiation, depth of invasion, age and sex (P < 0.05), but not with tumor size and TNM stage. Conclusion: The expressions of ABCG2, Oct4 and Nanog in cancer tissues are related to tumor differentiation status, and they can be used as new molecular markers for the diagnosis of laryngeal cancer .
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