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Chinese Journal of Stomatological Research(Electronic Edition) ›› 2009, Vol. 3 ›› Issue (04): 382-390. doi: 10.3877 / cma.j.issn.1674-1366.2009-04-006

• Original Articles • Previous Articles    

Expression of RECK and matrix metalloprotease-2 in ameloblastoma and their associativity

Bin ZHANG1,(), Zhi-ying XU1, Hong-zhang HUANG1, Hong-liang XIE1   

  1. 1.Department of Oral and Maxillofacial Surgery, The Second Affiliated Hospital, Sun Yat-sen University, Guangzhou 510120, China
  • Received:2009-05-04 Online:2009-08-01 Published:2025-02-26
  • Contact: Bin ZHANG

Abstract:

Objective

To explore the relationship and correlation between RECK and matrix metalloproteinase-2 (MMP-2) expression and the clinnical biological behavior of ameloblastoma (AB).

Methods

EliVisionTM plus 2-step immunochemistry staining method was employed to detect protein expression of RECK and MMP-2 in the paraffin-embedded specimens of 69 cases of AB (including 45 cases of primary AB and 24 cases of recurrent AB), 6 cases of ameloblastic carcinoma and 16 cases of keratocystic odontogenic tumor (KCOT), and mRMA expression of RECK and MMP-2 in fresh specimens of 22 cases of AB (including 12 cases of primary AB and 10 cases of recurrent AB), 2 cases of ameloblastic carcinoma and 16 cases of KCOT was detected using reverse transcription-polymerase chain reaction (RT-PCR). All data were analyzed by SPSS13.0 software package.

Results

Immunoreactivity for RECK sequentially reduced in KCOT, AB and ameloblstic carcinoma (P <0.05), and its expression showed downregulation in recurrent AB compared with primary AB (P <0.01). Immunoreactivity for MMP-2 in AB and ameloblastic carcinoma enhanced compared with KCOT (P <0.05). RECK had a negative relationship with MMP-2 in protein expression in AB (r=-0.431). The expression of RECK mRNA in AB reduced compared with KCOT (P <0.001), and there was no expression in ameloblsic carcinoma. The mRNA level of MMP-2 in AB increased compared with KCOT (P <0.001), and there was a high level of expression in ameloblastic carcinoma. RECK mRNA in recurrent AB decreased compared with primary AB (P <0.05), but MMP-2 mRNA showed no siginificant difference between recurrent AB and primary AB. RECK had no relationship with MMP-2 in mRNA expression in ameloblastoma.

Conclusions

Decreased or absent expression of RECK and increased expression of MMP-2 may be associated with the clinnical biological behavior of AB,and RECK may participate in the invasion, recurrence and malignant transformation of AB by regulating MMP-2 at post-transcriptional level.

Key words: RECK, MMP-2, Ameloblstoma, Immunohistochemistry, RT-PCR

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