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中华口腔医学研究杂志(电子版) ›› 2009, Vol. 3 ›› Issue (04) : 382 -390. doi: 10.3877 / cma.j.issn.1674-1366.2009-04-006

基础研究

RECK 基因和基质金属蛋白酶-2 在成釉细胞瘤的表达及相关性研究
张彬1,(), 徐志英1, 黄洪章2, 谢宏亮1   
  1. 1.510120 广州,中山大学附属第二医院口腔颌面外科
    2.510120 广州,中山大学光华口腔医学院·附属口腔医院·口腔医学研究所
  • 收稿日期:2009-05-04 出版日期:2009-08-01
  • 通信作者: 张彬
  • 基金资助:
    广东省自然科学基金(06021272)

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 Published:2009-08-01
  • Corresponding author: Bin ZHANG
引用本文:

张彬, 徐志英, 黄洪章, 谢宏亮. RECK 基因和基质金属蛋白酶-2 在成釉细胞瘤的表达及相关性研究[J/OL]. 中华口腔医学研究杂志(电子版), 2009, 3(04): 382-390.

Bin ZHANG, Zhi-ying XU, Hong-zhang HUANG, Hong-liang XIE. Expression of RECK and matrix metalloprotease-2 in ameloblastoma and their associativity[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2009, 3(04): 382-390.

目的

探讨RECK 和基质金属蛋白酶-2(MMP-2)的表达与成釉细胞瘤(AB)临床生物学行为的关系及相关性。

方法

应用免疫组化EliVisionTM plus 法检测69 例AB(原发45 例,复发24 例)、6 例成釉细胞癌和16 例牙源性角化囊性瘤(KCOT)中RECK、MMP-2 蛋白的表达,同时采用RT-PCR 方法检测22 例AB(原发12 例,复发10 例)、2 例成釉细胞癌和16例KCOT 中RECK、MMP-2 mRNA 的表达水平。 所有数据采用SPSS 13.0 统计软件包进行统计学分析。

结果

RECK 蛋白的阳性表达率在KCOT、AB 和成釉细胞癌中依次明显降低(P <0.05),且复发AB 显著低于原发AB(P <0.01);AB 和成釉细胞癌的MMP-2 蛋白阳性表达率均显著高于KCOT(P <0.05);RECK 蛋白与MMP-2 蛋白在AB 中的表达呈负相关(r=-0.431,P <0.001)。 RECK mRNA 在AB、KCOT 中均见表达,但在AB 的表达较KCOT 显著降低(P <0.001),成釉细胞癌中则无表达;MMP-2 mRNA 在KCOT、AB 和成釉细胞癌中均见表达,但在AB 的表达水平较KCOT 显著增高(P <0.001),在成釉细胞癌中均呈高水平表达;复发AB 的RECK mRNA 表达水平较原发AB 显著降低(P <0.05),但复发与原发AB 的MMP-2 mRNA 表达之间差异无统计学意义;RECK mRNA 与MMP-2 mRNA 在AB 中的表达水平无相关性(P >0.05)。

结论

RECK 表达降低或缺失及MMP-2 表达增高与AB 的临床生物学行为密切相关。RECK 可能通过转录后水平调控MMP-2 参与AB 的侵润、复发和恶性转化过程。

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.

表1 RECK、MMP-2、β-acting 引物序列和产物大小
图1 RECK 蛋白的表达 A. RECK 在KCOT 中见强阳性表达(×400); B. RECK 在滤泡型AB 中阳性表达(×400); C. RECK 在丛状AB 中阳性表达(×200);D. RECK 在成釉细胞癌中阴性表达(×400)
图2 MMP-2 蛋白的表达 A. MMP-2 在KCOT 中阳性表达(×400); B. MMP-2 在滤泡型AB 中的阳性表达(×200); C. MMP-2 在丛状型AB 中的阳性表达(×200);D. MMP-2 在成釉细胞癌中的强阳性表达(×200)
表2 RECK 和MMP-2 蛋白在各组织及AB 临床病理分类中的表达
图3 MMP-2、RECK 和β-acting 电泳结果 A. MMP-2 mRNA 的表达(279 000),M: DNA marker,1: KCOT,2:KCOT,3:AB,4:AB,5:成釉细胞癌; B. RECK mRNA 的表达(207 000),M:DNA marker,1:KCOT,2:KCOT,3:AB,4:AB,5:成釉细胞癌; C. β-acting mRNA 的表达(431 000),M:DNA marker,1:KCOT,2:KCOT,3:AB,4:AB,5:成釉细胞癌
表3 RECK、MMP-2 mRNA 在各组织及AB 临床病理类型中的表达(
表4 AB 中RECK、MMP-2 蛋白表达之间的关系
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