摘要
用^(32)P-dATP标记的c-myc、c-erbB-2、v-sis DNA探针,与15例人甲状腺癌、3例甲状腺瘤、1例甲状腺癌旁组织及5例正常甲状腺组织的细胞总RNA打点杂交表明:所有标本均有c-myc、c-erbB-2基因的表达,其中9例甲状腺癌c-myc RNA较正常组织增高3～11倍,7例甲状腺癌c-erbB-2表达增高10～50倍,未检测至v-sis RNA。c-myc、c-erbB-2探针与上述组织DNA Southernblot杂交表明:4例甲状腺癌出现c-myc重排,其中1例伴有明显扩增。未发现c-erbB-2扩增与重排。提示:c-myc、c-erbB-2的激活可能与甲状腺癌的发生有关。
The expression, amplification and rearrangement of c-myc and c-erbB-2 genes in thyroid tumor were studied. 32P-dATP-labelled probes of c-myc, c-erbB-2 and v-sis DNA fragments were used to hybridise with the cellular total RNA. We found that c-myc and c-erbB-2 oncogenes were expressed in all samples. The levels of c-myc RNA were three-to eleven-fold higher in 9 out of 15 cancer samples when compared with that in normal tissues. In 7 of 15 cancer samples, c-erbB-2 gene was overexpressed 10~50 times higher than normal. No v-sis RNA was detected in all the samples. Southern blot hybridisation showed that rearrangement of c-myc oncogene were observed in 4 cancer samples, of which one showed a 150-fold amplification of c-myc gene. No amplification or rearrangement of c-erbB-2 gene was detected. These data indicate that the activat.:on of c-myc and c-erbB-2 oncogenes may contribute to the development and/or maintenance of the malignant phenotype of the thyroid carcinomas.
出处
《中华内分泌代谢杂志》
CAS
CSCD
北大核心
1991年第4期195-197,共3页
Chinese Journal of Endocrinology and Metabolism
关键词
甲状腺肿瘤
癌基因
杂交
Oncogene Hybridisation Thyroid carcinoma
