Significance of MALAT1, COX-2, β-catenin, MMP-3 and MMP-9 in the occurrence and development of colorectal carcinoma / 国际肿瘤学杂志

ABSTRACT

Objective To investigate the significance of metastasis associated lung adenocarcinoma transcript 1 ( MALAT1 ),cyclooxygerase-2 ( COX-2 ),beta catenin ( β-catenin )、matrix metalloproteinase (MMP)-3 and MMP-9 in the occurrence and development of colorectal carcinoma.Methods Real-time PCR was used to detect MALAT1,COX-2,β-catenin,MMP-3 and MMP-9 rnRNA expression in samples from 30 fresh colorectal carcinomas and 30 corresponding adjacent tissues.And the correlation analysis of the gender and age of patients,CEA,immune cellular factors ( CD4 and CD8 ),clinical stages,and the degree of differentiation was undertaken.Results The expression levels of MALAT1,COX-2,β-catenin and MMP-9 were significantly different between colorectal carcinoma tissues and adjacent colorectal tissues (P ＜ 0.05 ).MMP-3 showed no significant difference (P ＞ 0.05).MALAT1,COX-2,β-catenin and MMP-9 expression levels showed an average 2.22-fold,1.86-fold,2.16-fold,0.58-fold ( P ＜ 0.01 ) increase in colorectal carcinoma tissues when compared with adjacent colorectal tissues respectively.There were negative correlation between MALAT1 and β-cateuin ( colorectal carcinoma tissues vs adjacent colorectal tissues) ( r =- 0.346,P =0.030).While there were positive correlation between MMP-9 and β-catenin ( colorectal carcinoma tissues vs adjacent colorectal tissues) ( r =0.312,P =0.047 ).There were significant difference between male patients and female patients in terms of COX-2 and MMP-9 (colorectal carcinoma tissues vs adjacent colorectal tissues) (P =0.047; P =0.018).There were significant difference between patients with tumor marker CEA increase and patients without CEA increase in terms of COX-2 ( colorectal carcinoma tissues vs adjacent colorectal tissues) ( P =0.021 ).Conclusion MALAT1,COX-2,MMP-9 and β-catenin have significance in the occurrence and development of colorectal carcinoma,while MMP-3 has no significant reference value. The negative correlation between MAL(A)T-1 and β-catenin and the positive correlation between MMP-9 and β-catenin might show some interaction relationship in the development of colorectal carcinoma.The expression differences of COX-2 and MMP-9 (colorectal carcinoma tissues vs adjacent colorectal tissues) in male and female patients suggest that above two genes may affect the occurrence ratio of colorectal carcinoma.Detecting of COX-2 maybe helpful to the tumor marker CEA during the diagnosis of colorectal carcinoma.