热损伤诱导创面组织C-myc、C-myb、C-sis和C-jun原癌基因的表达

目的:研究创面组织部分原癌基因的表达。方法：雄性Wistar大鼠背部制作Ⅱ度烧伤模型，在不同时相点取创面组织及正常皮肤组织标本，应用mRNA点杂交，放射自显影及密度扫描方法分析原癌基因的表达水平。结果：热损伤诱导C－myc、C－myb，C－jun和C－sismRNA的表达。但这4种原癌基因的表达模式不尽相同。C－myc和C－jun的表达在伤后第1天就增加，分别于伤后1，3d达峰值。C－myB和C－sis的表达分别于伤后第3，5天开始增加，于第10天达峰值。结论：热损伤能诱导创面组织原癌基因的表达，其表达的有序性与受控性表明上述4种原癌基因作为调节因子参与了创面修复的过程。

Thermal injury induces some protooncogenes expression in wounded skin tissue

To study the expression of some protooncogenes in burn wounded skin tissue. Methods: The protooncogene expression was analysed by mRNA dot blot hybridization,autoradiography and densitermeter. Results: Thermal injury induced C-myc, C-myb, C-jun and C-sis mRNA expression. How-ever, those four protooncogenes showed different expression models. Expression of C-myc and C-jun in-creased at d 1, and peaked 1 and 3 d postburn, respectively. Expression of C-myb and C-sis increased 3and 5 d, and peaked 10 d after thermal injury. Conclusion: Thermal injury can induce some protooncogeneexpression which sh0wed temporal order and well controlled manifestation. Those results suggest thatthose four protooncogenes are involved with the repair process as a regulator.