摘要
K—ras基因是一种癌基因,促进细胞生长、分化,基因的突变使ras蛋白丧失GTP酶活性,导致细胞的异常生长、分化,促进癌的发生,同时导致使用抗表皮生长因子受体(EGFR)多克隆抗体药物治疗的结直肠癌患者无明显获益。结直肠癌不同实体肿瘤的K—ras基因突变率不同,K—ras基因野生型或突变型对治疗方案选择及预后具有重要意义,突变型患者使用抗EGFR抗体治疗效果差,对5-Fu、FOLFOX疗效尚无一致定论。
K-ras gene is one of oncogenes, which promotes cells growth and differentiation. Ras protein loses the activity of GTP enzyme because of K-ras mutations, and that may cause abnormal growth, differ- entiation of cells and promote the occurrence of tumor. Patients with colorectal carcinoma that carry mutations in K-ras gene do not benefit from the administration of anti-epidermal growth factor receptor (EGFR) polyclonal antibodies. Different solid tumors of colorectal carcinoma have different K-ras mutation rates. Different geno- types of K-ras gene (wild-type or K-ras mutant type) affect significantly on treatment options and prognosis. The efficacy of mutant type patients with anti-EGFR antibodies is poor, and the therapeutic effects of 5-FU and FOLFOX are still unclear.
出处
《国际肿瘤学杂志》
CAS
2014年第3期214-216,共3页
Journal of International Oncology