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eISSN: 1643-3750

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Effect of Xylosyltransferase-I Silencing on Implanting Growth of Salivary Pleomorphic Adenoma

Guiyun Ren, Yanning Zhang, Jie Wang, Huijuan Liu, Fusheng Dong

(Department of Oral and Maxillofacial Surgery, College and Hospital of Stomatology, Hebei Medical University; The Key Laboratory of Stomatology, Shijiazhuang, Hebei, China (mainland))

Med Sci Monit 2018; 24: ANS3772-3781

DOI: 10.12659/MSM.911014


BACKGROUND: Salivary pleomorphic adenoma is one of the most common salivary gland tumors. It has a relatively high tendency to recur and a high risk of malignant transformation. The present study aimed to study the effect of XT-I gene silencing on the implanting growth of salivary pleomorphic adenoma.
MATERIAL AND METHODS: Primary cultures of SPA cells and fibroblasts from the same patient were assessed. The adenovirus vector Ad-shRNA-XT-I was constructed and transfected into SPA cells. The expression of XT-I gene and XT-I protein was detected by real-time PCR and Western blot. The contents of proteoglycans were detected. The SPA cells transfected with Ad-shRNA-XT-I (group SPA-XT-I) and Ad-shRNA-HK (group SPA-HK), as well as without transfection (group SPA), were implanted into ADM scaffold with fibroblasts and then transferred into 18 BALB/C-nu nude mice for 3 months.
RESULTS: Primary cultures showed SPA cells were positive for human CK and S-100 protein and the fibroblasts were positive for human vimentin. The expressions of XT-I gene and protein were decreased by 51% and 51.31%, respectively. The content of proteoglycans was reduced by 48.45%. The results of the implanting growth in vitro and in vivo of nude mice indicated that no tumors grew in the SPA-XT-I group, whereas SPA grew in groups SPA-HK and SPA positive for human a-SMA, S-100 protein, and calponin.
CONCLUSIONS: XT-I gene silencing effectively inhibited the implanting growth of SPA.

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