title: Production, purification and characterization of mouse monoclonal antibodies against human mitochondrial transcription termination factor 2 (MTERF2).
abstract: Human mitochondrial transcription termination factor 2 (MTERF2) is a member of the mitochondrial transcription termination factors (MTERFs) family and a cell growth inhibitor. To create a specific mouse monoclonal antibody against human MTERF2, the full-length His-tag MTERF2 protein (1-385 aa) was expressed in Escherichia coli, and purified recombinant protein was injected into three BALB/c mice to perform an immunization procedure. Eight stable positive monoclonal cell lines were screened and established. ELISA results demonstrated that all antibody light chains were kappa, while the heavy chains displayed three subtypes IgG1, IgG2a, and IgG2b respectively. The sensitivity and specificity of the monoclonal antibodies against human MTERF2 were determined using immunoblotting, immunoprecipitation and immunofluorescence analyses. Furthermore, serum regulation of human MTERF2 protein expression levels in human glioma U251 cells was examined with these monoclonal antibodies and the results demonstrated that the expression level of MTERF2 protein was dramatically inhibited by the addition of serum to serum-starved cells. Taken together, our results demonstrate the functionality of these mouse anti-human MTERF2 monoclonal antibodies, which may provide a useful tool to elucidate the role of MTERF2 in human mitochondrial transcription as well as other potential activities. To our knowledge, this is the first report on the preparation and characterization of mouse monoclonal antibodies against human MTERF2.
authors.affiliation: Laboratory of Biochemistry and Molecular Biology, School of Life Sciences, Yunnan University, 002 Cuihu Road, Kunming 650091, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Xiong
authors.forename: Weiwei
authors.initials: W
authors.lastname: Huang
authors.forename: Yang
authors.initials: Y
authors.lastname: Jiao
authors.forename: Jie
authors.initials: J
authors.lastname: Ma
authors.forename: Min
authors.initials: M
authors.lastname: Yu
authors.forename: Mingxing
authors.initials: M
authors.lastname: Ma
authors.forename: Hong
authors.initials: H
authors.lastname: Wu
authors.forename: Deyong
authors.initials: D
authors.lastname: Tan
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology* / Q000302:isolation & purification*; D000917:Antibody Formation; D000918:Antibody Specificity; D045744:Cell Line, Tumor; D004268:DNA-Binding Proteins; D004926:Escherichia coli / Q000235:genetics; D015870:Gene Expression; D005822:Genetic Vectors / Q000235:genetics; D006801:Humans; D015151:Immunoblotting; D047468:Immunoprecipitation; D051379:Mice; D008807:Mice, Inbred BALB C; D024101:Mitochondrial Proteins / Q000737:chemistry / Q000235:genetics / Q000276:immunology*; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000737:chemistry / Q000235:genetics / Q000276:immunology; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D004268:DNA-Binding Proteins; C506545:MTERF2 protein, human; D024101:Mitochondrial Proteins; D011994:Recombinant Proteins; D014157:Transcription Factors