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    • 3. 发明申请
    • CELL LINES, THEIR PREPARATION AND USE
    • 细胞系,其制备和使用
    • WO0216555A2
    • 2002-02-28
    • PCT/GB0103726
    • 2001-08-17
    • UNIV WALES MEDICINEJONES CHRISTOPHER JOHNKIPLING DAVID GLYNWILKINSON GAVINMCSHARRY BRIANSKINNER JULIA WENDY
    • JONES CHRISTOPHER JOHNKIPLING DAVID GLYNWILKINSON GAVINMCSHARRY BRIANSKINNER JULIA WENDY
    • C12N5/077G01N33/50G01N33/569C12N5/00
    • G01N33/5044C12N5/0656C12N2503/00C12N2510/02C12N2510/04G01N33/5008G01N33/502G01N33/5091G01N33/56983G01N2333/045
    • An immortalised cell line is disclosed, which is suitable for use in vaccine production, characterised in that the cells thereof are adapted to express hTERT, the catalytic subunit of human telomerase. A suitable cell line comprises human diploid fibroblasts, such as those derivable from MRC-5 or WI38 cell lines, transfected with cDNA of hTERT or infected by a retrovirus carrying cDNA of hTERT, which transfected or infected cells are capable eof supporting antigen production. A method for preparing such cell lines, using recombinant techniques, is also disclosed. The cell lines may be used as a diagnostic test for the presence of a virus, such as HCMV, which assay method includes the step of (a): contacting a sample of the telomerase-immortalised cell line whose genome contains a nucleotide sequence comprising a reporter gene capable of causing a measurable response, which reporter gene is under the control of the virus promoter region whereby expression of the reporter protein corresponds to expression of the virus in the sample. Alternatively, the telomerase-immortalised cell lines may be used to determine the efficacy of anti-viral agents by testing the capability of a modified virus, such as HCMV containing a reporter gene, to infect these cells. The assay method includes the step of (a): contacting a sample of the telomerase-immortalised cells with the modified virus, whereby expression of the reporter protein corresponds to infection of the cells in the sample. Preferably, the methods further include the step of (b): measuring the response of the reporter; and/or (c) comparing the measurement resulting from step (b) with the response from a standard or non-immortalised sample, which has itself undergone assay method steps (a) and (b).
    • 公开了一种适用于疫苗生产的永生细胞系,其特征在于其细胞适于表达人类端粒酶的催化亚单位hTERT。 合适的细胞系包括人二倍体成纤维细胞,例如衍生自MRC-5或WI38细胞系的那些,转染有hTERT的cDNA或被携带有hTERT的cDNA的逆转录病毒感染的转染或感染的细胞能够支持抗原产生。 还公开了使用重组技术制备这种细胞系的方法。 细胞系可用作病毒如HCMV的存在的诊断试验,该测定方法包括以下步骤:(a):使端粒酶永生化细胞系的样品接触,其基因组含有包含 报告基因能够引起可测量的反应,该报告基因处于病毒启动子区域的控制下,由此报道蛋白的表达对应于样品中病毒的表达。 或者,端粒酶永生化细胞系可用于通过测试修饰的病毒(例如含有报告基因的HCMV)感染这些细胞的能力来测定抗病毒剂的功效。 测定方法包括以下步骤:(a):使端粒酶永生化细胞的样品与经修饰的病毒接触,由此报道蛋白的表达对应于样品中细胞的感染。 优选地,所述方法还包括步骤(b):测量报告者的反应; 和/或(c)将步骤(b)得到的测量与本身经过测定方法步骤(a)和(b)的标准或非永生化样品的响应进行比较。