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    • 2. 发明授权
    • Stable TatIII cell lines, TatIII gene products, and assay methods
    • US4981790A
    • 1991-01-01
    • US806263
    • 1985-12-06
    • William A. HaseltineCraig A. RosenJoseph G. SodroskiWei C. Goh
    • William A. HaseltineCraig A. RosenJoseph G. SodroskiWei C. Goh
    • C12P19/34C07K14/15C07K14/16C12N5/10C12N15/00C12N15/09C12N15/85C12P21/00C12R1/91
    • C07K14/005C12N15/85C12N2740/14022C12N2740/16322
    • This invention describes stable tat.sub.III cell lines. It is disclosed that by transfecting a preselected tat.sub.III cell line with a vector containing a sufficient amount of the HTLV-III LTR responsive to tat.sub.III gene products for trans-activation and an enhancer upstream of the tat.sub.III responsive segment, it is possible to express high levels of the tat.sub.III gene products. By including a preselected heterologous gene on this vector, it is also possible to express high levels of a desired gene product. A substantially pure protein comprising 86 amino acids and having an apparent molecular weight of about 14,000 dalton and exhibiting trans-activating activity is also disclosed. This protein and polypeptides having trans-activating ability, which is also disclosed, can be used to produce high levels of a desired gene product. A method of detecting the presence of HTLV-III/LAV virus in an individual is also disclosed and comprises the step of:(a) incubating whole blood or lymphocytes from the invididual to be tested with tat.sub.III cell lines of the present invention in a culture medium; and(b) screening for cytopathic effects on the cells is also disclosed. A method of screening for a compound that inhibits trans-activation of the tat.sub.III gene product is also disclosed and comprises the steps of:(1) transacting a tat.sub.III cell line of the present invention with a vector containing a gene that expresses a selectable marker and whose expression is under the control of an HTLV-III LTR;(2) transfecting the same type of tat.sub.III cell lines as in step (1) with the selectable gene chosen in step (1) but under the control of a different regulatory sequence;(3) thereafter, adding a preselected compound to each of the cell lines in increasing concentrations; and(4) measuring the expression of the selectable gene product to determine whether the compound effects the tat.sub.III function without being toxic to the cell.
    • 4. 发明授权
    • Art nucleotide segments, vectors, cell lines methods of preparation and
use
    • 艺术核苷酸片段,载体,细胞系的制备和使用方法
    • US4935372A
    • 1990-06-19
    • US865151
    • 1986-05-20
    • Wei C. Goh
    • Wei C. Goh
    • C12N15/00A61K39/12C07K1/22C07K14/00C07K14/155C07K14/16C12N5/00C12N15/85C12P21/02C12R1/91
    • C07K14/005C12N15/85C12N2740/14022C12N2740/16322Y10S930/221
    • A gene and gene product that regulates the expression of the capsidal envelope genes of HTLV-III/LAV and that can be used to regulate the expression of heterologous (non-viral) genes as well is disclosed. This art gene consists of two exons and can be used in creating nucleotide segments, vectors and cell lines. A new method for screening for compounds that inhibit the replication of HTLV-III is also described and comprises:(1) transfecting a T-cell line with the HTLV-III art and env genes;(2) thereafter, adding a preselected compound to the transformed cell line in increasing concentrations; and(3) determining whether the compound effects the art function without being toxic to the cell.An additional parameter to use in diagnosis of AIDS disease is also described. The use of the art gene and gene product in AIDS therapy is also disclosed.
    • 公开了一种调节HTLV-III / LAV的包膜基因表达并可用于调节异源(非病毒)基因表达的基因和基因产物。 该艺术基因由两个外显子组成,可用于产生核苷酸片段,载体和细胞系。 还描述了用于筛选抑制HTLV-III复制的化合物的新方法,其包括:(1)用HTLV-III技术和env基因转染T细胞系; (2)之后,以增加的浓度向转化细胞系中加入预选化合物; 和(3)确定化合物是否影响艺术功能而不对细胞有毒性。 还描述了用于诊断AIDS疾病的另外的参数。 还公开了在艾滋病治疗中使用艺术基因和基因产物。