摘要
背景与目的:KIT基因突变在恶性黑素瘤的发生、发展中发挥了重要作用。该研究旨在探讨KIT基因在各种组织学类型恶性黑素瘤患者中的突变率和类型。方法:用聚合酶链反应(polymerase chain reaction,PCR)扩增和直接测序方法检测144例恶性黑素瘤患者肿瘤组织中KIT外显子9、11、13和17的突变情况。结果:KIT基因在恶性黑素瘤患者中的总体突变率为9.0%(13/144)。在肢端型、黏膜型、慢性日光损伤型(chronic sun-induced damage,CSD)和非慢性日光损伤型(non-chronic sun-induced damage,non-CSD)恶性黑素瘤组织中,KIT基因的突变率分别为7.7%(4/52)、20.0%(7/35)、14.3%(1/7)和2.8%(1/36);13例KIT基因突变中,有1例位于第9外显子,9例位于第11外显子,3例位于第13外显子。第11外显子L576P为最常见的突变类型。结论:KIT基因突变在恶性黑素瘤患者中最常见于第11外显子,它可能是恶性黑素瘤治疗药物作用的潜在靶点。
Background and purpose: KIT mutation plays an important role during the pathogenesis of melanoma. This study was designed to investigate the mutation status of K/T in different subtypes of melanoma. Methods: A total number of 144 cases of melanoma were analyzed for K/T mutation (exon 9, 11, 13 and 17) by DNA sequencing using paraffin-embedded tissues. Results: The total incidence of K/T mutation in melanoma was 9.0% (13/144). K/T mutations in acral melanoma, mucosal melanoma, melanoma on skin with chronic sun-induced damage (CSD) and melanoma on skin without chronic sun-induced damage (non-CSD) was 7.7% (4/52), 20% (7/35), 14.3% (1/7) and 2.8% (1/36), respectively. Among 13 cases with K/T mutation, 1 mutation lay in exon 9, 9 lay in exon 11 and 3 in exon 13. L576P in exon 11 was the most common type of mutation. Conclusion: The most prevalent type of K/T mutation in patients lies in exon 11. K/T mutation could be the potential drug target in melanoma therapy.
出处
《中国癌症杂志》
CAS
CSCD
北大核心
2016年第5期399-403,共5页
China Oncology
基金
上海市自然科学基金(12ZR1406600)
国家临床重点专科建设项目