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    • 7. 发明申请
    • TRANS-ACTING TRANSCRIPTIONAL FACTORS
    • 转基因转录因子
    • WO1985005636A1
    • 1985-12-19
    • PCT/US1985000985
    • 1985-05-24
    • DANA-FARBER CANCER INSTITUTE
    • DANA-FARBER CANCER INSTITUTEHASELTINE, William, A.SODROSKI, Joseph, G.ROSEN, Craig, A.
    • C12P19/34
    • C07K14/005C12N15/85C12N2740/14022C12N2740/16322
    • Products and methods for the expression of gene products by recombinant DNA techniques. The invention relates to the discovery of a novel phenomenon in retrovirus gene regulation, namely trans-activation. Described herein are novel trans-acting factors which may be employed to enhance the production of homologous or heterologous genes. The trans-acting regulatory genes of HTLV-I, HTLV-II, HTLV-III and BLV are disclosed. Also disclosed are cis-acting regulatory elements within the viral LTR sequences that respond to the trans-acting viral factors. The cis-acting regulatory elements (called tar elements for the trans-activation responsive) of the genomes of HTLV-I, HTLV-II, HTLV-III and BLV are described. Paired expression systems that include a trans-acting factor derived from trans-activating retrovirus, paired with an expression vector which includes responsive cis-acting viral factors. The cis-acting regulatory elements 5' to the gene to be expressed, provide substantially increased expression of gene products in a variety of animal cells. Suitable hosts include human lymphoid cells, human fibroblasts, human epithelial cells, rodent cell lines, e.g. murine lymphocite, murine fibroblast and Chinese hamster ovary cells, and feline and simian epithelial cells.
    • 通过重组DNA技术表达基因产物的产物和方法。 本发明涉及逆转录病毒基因调控中的新现象的发现,即反式激活。 本文描述的是可用于增强同源或异源基因产生的新的反式作用因子。 公开了HTLV-I,HTLV-II,HTLV-III和BLV的反式调节基因。 还公开了响应于反作用病毒因子的病毒LTR序列内的顺式作用调节元件。 描述了HTLV-1,HTLV-II,HTLV-III和BLV的基因组的顺式作用调节元件(称为反式激活反应的焦油元件)。 配对表达系统,其包括衍生自反式激活逆转录病毒的反式作用因子,与包括响应性顺式作用病毒因子的表达载体配对。 要表达的基因的顺式作用调节元件5'提供基因产物在多种动物细胞中的显着增加的表达。 合适的宿主包括人淋巴细胞,人成纤维细胞,人上皮细胞,啮齿动物细胞系, 鼠淋巴细胞,鼠成纤维细胞和中国仓鼠卵巢细胞,以及猫和猿上皮细胞。
    • 8. 发明申请
    • LTR VECTORS, METHODS OF PREPARATION AND USE
    • LTR VECTORS,制备和使用方法
    • WO1985005629A1
    • 1985-12-19
    • PCT/US1985000986
    • 1985-05-24
    • DANA-FARBER CANCER INSTITUTE
    • DANA-FARBER CANCER INSTITUTEHASELTINE, William, A.ROSEN, Craig, A.LENZ, Jack, R.CELANDER, Daniel, W.
    • C12N01/00
    • C12N15/85
    • Process for the tissue specific expression of heterologous genes using modified LTR vectors. Any retroviral LTR can be synthetically modified in its enhancer region using the methods described herein and tissue specificity can thereby be achieved. Also described is an assay useful in proving or predicting tissue specificity of the modified LTR vector. This invention is also directed to novel tissue specific LTR vectors. Long terminal repeats (LTRs) of Moloney sacoma virus (MSV) have been shown useful in activating the expression of a normally quiescent cellular DNA sequence by Vande Woude et al., in U.S. Patent No. 4,405,712. The present invention demonstrates the use of modified mammalian LTR vectors for obtaining selectable tissue expression of heterologous genes.
    • 使用修饰的LTR载体的异源基因的组织特异性表达的方法。 任何逆转录病毒LTR可以使用本文所述的方法在其增强子区域进行合成修饰,从而可以实现组织特异性。 还描述了可用于证实或预测修饰的LTR载体的组织特异性的测定法。 本发明还涉及新的组织特异性LTR载体。 已经显示,Moloney sacoma病毒(MSV)的长末端重复序列(LTR)可用于Vande Woude等在美国专利号4,405,712中激活正常静止细胞DNA序列的表达。 本发明证明使用修饰的哺乳动物LTR载体来获得异源基因的可选择的组织表达。