Fig. 1

ERp44 was highly expressed in NPC. a Western blot analysis was performed to reveal ERp44 expression in tissues. Tumor: Nasopharyngeal squamous cell carcinoma tissues. Normal: Inflammatory nasopharyngeal epithelium tissues. ACTB was used as a control. The bar demonstrated the expression of ERp44 relative to ACTB by densitometry. b qRT-PCR was used to detect ERp44 expression in NPC tissues and inflammatory nasopharyngeal tissues. c Representative results of immunohistochemical staining. Left: Inflammatory nasopharyngeal epithelium tissues had lower expression of ERp44 (up: × 20) (down: × 40). Middle and Right Line: NPC tissues had higher expression of ERp44 (up: × 20) (down: × 40). d Western blot was used to detect ERp44 expression in NPC cell lines CNE1, CNE2, 5-8F, 6-10B and normal nasopharyngeal epithelial cell NP69. Data represent mean ± SEM. *p < 0.05