CXCR7在骨肉瘤组织、细胞的表达及其意义

目的 研究CXCR7在骨肉瘤组织和骨肉瘤周围正常组织的表达差异,并构建CXCR7腺病毒表达载体,转染骨肉瘤细胞株MG63,观察CXCR7对MG63细胞增殖、炎症因子PGE2分泌的影响.方法 RT-qPCR检测CXCR7在骨肉瘤组织、细胞和骨肉瘤周围正常组织的表达差异;构建CXCR7腺病毒表达载体,感染MG63细胞后,采用RT-qPCR、MTT、ELISA分别检测其对MG63细胞CXCR7 mRNA表达、细胞增殖和PGE2分泌的影响.结果 （1）RT-qPCR结果显示,在骨肉瘤组织CXCR7 mRNA表达率93.80%和表达量（2.221±0.112）均显著高于骨肉瘤周围正常组织45.71%、（0.3448±0.098）;MG63细胞低表达CXCR7 mRNA.（2）CXCR7腺病毒表达载体转染MG63细胞48、72、96 h后,显著促进MG63细胞增殖（P〈0.05）和PGE2分泌（P〈0.05）.结论 骨肉瘤组织CX-CR7mRNA和蛋白表达显著高于骨肉瘤周围正常组织;CXCR7表达增高可以促进骨肉瘤细胞增值,促进炎症因子PGE2分泌,对骨肉瘤的进展将产生不利的影响.

The expression of CXCR7 in osteosarcoma tissues and cells

Objective To study the differences of CXCR7 expression between in osteosarcoma tissues and normal peri-osteosarcoma tissues, and observe the effect on cell proliferation and inflammatory cytokine PGE2 secretion in MG63 cells when it had been transfected with pEGFP-Adv-CXCR7 vector. Methods CXCR7 expression in osteosarcoma tissues, cells and normal peri-osteosarcoma tissues detected by RT-qPCR. The CXCR7 mRNA expression, cell proliferation and PGE2 secretion of MG63 cells after transfected with pEGFP-Adv-CXCR7 expression vector were evaluated by RT-qPCR, MTT and ELISA, respectively. Results The expression rate and quality of CXCR7 mRNA in osteosarcoma tissue were 93.80% and (2. 221 ±0. 112), which significantly higher than those of normal peri-osteosarcoma tissues 45.71% and (0. 3448 ±0.098). Low expression of CXCR7 in MG63 cells was also observed. The proliferation and PGE2 secretion of MG63 cells were significantly increased at the time point of 48, 72 and 96h after pEGFPAdv-CXCR7 expression vector transfected into MG63 cells ( P < 0. 05). Conclusion The expression of CXCR7 mRNA in osteosarcoma tissues were significantly higher than normal peri-osteosarcoma tissues. CXCR7 high expression may have a negative effect on the progress of osteosarcoma.