title: A single-strand conformation polymorphism method by capillary electrophoresis with laser-induced fluorescence for detection of the T1151A mutation in hMLH1 gene.
abstract: Mutation of hMLH1 gene plays an important role in human tumorigenesis. A highly sensitive single-strand conformation polymorphism (SSCP) method for detection of the T1151A mutation in exon 12 of the hMLH1 gene was for the first time developed employing laser-induced fluorescence capillary electrophoresis (LIF-CE). Effects of the concentration of linear polyacrylamide solution, running temperature, running voltage and the addition of glycerol on SSCP analysis were investigated, and the optimum separation conditions were defined. Thirty colorectal cancer patients and eight lung cancer patients were screened and the T1151A mutation was found in four of them. Based on CE-sequencing the mutation was further confirmed. To our knowledge, this is for the first time that the T1151A mutation is found in lung cancer. Our method is simple, rapid, and highly sensitive and is well suited to the analysis of large numbers of clinical samples.
authors.affiliation: National Chromatographic R & A Center, Dalian Institute of Chemical Physics, the Chinese Academy of Sciences, Dalian, China.
authors.forename: Xianzhe
authors.initials: X
authors.lastname: Shi
authors.forename: Guowang
authors.initials: G
authors.lastname: Xu
authors.forename: Chunxia
authors.initials: C
authors.lastname: Zhao
authors.forename: Jianmei
authors.initials: J
authors.lastname: Ma
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Shen
authors.initials: S
authors.lastname: Lv
authors.forename: Qing
authors.initials: Q
authors.lastname: Yang
mesh_terms: D048868:Adaptor Proteins, Signal Transducing; D002352:Carrier Proteins; D015179:Colorectal Neoplasms / Q000235:genetics / Q000473:pathology; D004252:DNA Mutational Analysis / Q000379:methods*; D019075:Electrophoresis, Capillary / Q000379:methods*; D005453:Fluorescence; D006801:Humans; D007202:Indicators and Reagents; D007834:Lasers; D008175:Lung Neoplasms / Q000235:genetics / Q000473:pathology; D000070957:MutL Protein Homolog 1; D009363:Neoplasm Proteins / Q000235:genetics*; D009687:Nuclear Proteins; D017354:Point Mutation; D018807:Polymorphism, Single-Stranded Conformational
chemical_list: D048868:Adaptor Proteins, Signal Transducing; D002352:Carrier Proteins; D007202:Indicators and Reagents; C501486:MLH1 protein, human; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D000070957:MutL Protein Homolog 1