大肠癌患者骨髓微转移的基因研究

目的 探讨大肠癌患者骨髓中微转移基因检测的意义。方法 应用聚合酶链式反应－单链构象多态性分析（ＰＣＲ－ＳＳＣＰ）／银染技术,检测５１例大肠癌患者手术前、后不同时间骨髓中ｐ５３和Ｋ－ｒａｓ基因的突变状况。结果 ５１例患者术前骨髓中基因突变阳性者１９例,阳性率３７．２５％。阳性检出与Ｄｕｋｅ’ｓ分期、淋巴转移显著相关。术后经２～３个疗程的化疗后,１９例基因突变阳性的患者中１１例转阴。结论 大肠癌患者骨

Genes of micrometastasis in bone marrow of patients with colorectal cancer

OBJECTIVE: To detect the gene of micrometastasis in bone marrow of patients with colorectal cancer. METHODS: PCR-SSCP/silver stain technique was used to find out the metastatic cancer cells in 51 bone marrow samples in different time. RESULTS: The total positive rate of mutations of p53 and K-ras in bone marrow was 37.25% before operation. The incidence of mutations was obviously correlated with Duke's stage and lymphatic metastasis. After postoperative chemotherapy mutation in 11 patients turned to be negative. CONCLUSIONS: Detection of micrometastasis in bone marrow may contribute to early diagnosis of blood stream metastasis of colorectal cancer.