癌变·畸变·突变 ›› 1999, Vol. 11 ›› Issue (1): 1-004.doi: 10.3969/j.issn.1004-616x.1999.01.001

• 论著 •    下一篇

人肺腺癌SPC - A - 1 细胞系mtDNA 限制酶切分析

胡义德1  钱桂生1  陈维中1  李淑平1  曹世龙2   

  1. 1 第三军医大学新桥医院全军呼吸内科研究所 重庆 400037  2 上海医科大学 上海 200032
  • 收稿日期:1998-04-20 修回日期:1998-07-23 出版日期:1999-01-30 发布日期:1999-01-30

RESTRICTION ENDONUCLEASE ANALYSIS OF MITOCHONDRIAL DNA FROM HUMAN ADENOCARCINOMA CELL LINE SPC- A - 1

Hu Yide ,Qian Guisheng ,Chen Weizhong ,Li Shuping ,Cao Shilong   

  1. Instit ute of Respi ratory Diseases of People’s L iberation A rmy , Xinqiao Hospital , Thi rd Military Medical University , Chongqing  400037
  • Received:1998-04-20 Revised:1998-07-23 Online:1999-01-30 Published:1999-01-30

摘要: 为了探讨线粒体DNA(mtDNA) 在细胞癌变中的作用,实验采用一步法快速制备癌细胞系mtDNA ,用Pvu Ⅱ、Xho Ⅰ、Pst Ⅰ、EcoR Ⅰ、Bst E Ⅱ、Hind Ⅲ、Hpa Ⅰ、Bcl Ⅰ、EcoR Ⅴ、Sca Ⅰ和Xba Ⅰ共11 种限制性内切酶对SPC - A - 1 细胞系的mtDNA 进行了限制性片段长度多态性(RFL P) 分析,并根据单酶切及双酶切结果,构建了SPC - A - 1 细胞系mtDNA 限制性酶切图谱。结果发现,SPC - A - 1 细胞mtDNA 基因编码区的32 个酶切位点均无变异,仅在其mtDNA 非编码区第16276 位核苷酸处出现了EcoR Ⅴ新的酶切位点。结果表明SPC - A - 1 细胞mtDNA 基因编码区结构相当稳定,而主要的核苷酸变异可能位于其mtDNA 非编码区。

关键词: 肺癌, 线粒体DNA, 限制性片段长度多态性

Abstract: To understand the role of mitochondrial DNA(mtDNA) in carcinogenesis , Single2step Method was used to isolate the mtDNA f rom human adenocarcinoma cell line SPC - A - 1. The mtDNA was analyzed by rest riction f ragment length polymorphism(RFL P) with 11 kinds of rest riction endonuclease , which were Pvu Ⅱ,Xho Ⅰ,Pst Ⅰ、EcoR Ⅰ,Bst E Ⅱ,Hind Ⅲ,Hpa Ⅰ,Bcl Ⅰ, EcoR Ⅴ,Sca Ⅰand Xba Ⅰ. Rest riction map of mtDNA f rom SPC - A - 1 cell was obtained by the single and double2digestionn method. It was found that any variation at 32 rest riction2sites failed to be detected in the coding region of mtDNA f rom SPC - A - 1 cell line. But a new site was found at nucleotide 16276( EcoRV) within the noncoding region. These result s indicate that the primary st ructure of gene coding region of mtDNA isolated f rom SPC - A - 1 cell is highly conserved. Whicle the major variation of nucleotide is probably located in the noncoding region.

Key words: lung carcnoma, Mitochondrial DNA, RFL P