IN VITRO TRANSCRIPTION PROCESS FOR SCREENING OF NATURAL PRODUCTS AND OTHER CHEMICAL PRODUCTS

    公开(公告)号:HU9800526A2

    公开(公告)日:1998-10-28

    申请号:HU9800526

    申请日:1998-03-10

    Applicant: HOECHST AG

    Abstract: Process for transcription of a DNA template in vitro in a cell-free system, where the template comprises a sequence to be transcribed under the control of at least one regulatory element, is characterised in that (a) an enriched and optionally purified extract of cell nuclei and at least one labelled nucleotide are used for the transcription, where the extract can optionally be supplemented or partly or completely replaced by transcription factors and/or cofactors, (b) proteins present in the reaction mixture at the end of transcription are optionally separated and/or degraded, (c) the labelled transcript is bound to a solid support, (d) excess labelled nucleotide is removed, and (e) the amount of labelled transcript is determined. Also claimed is a DNA template as above in which the sequence to be transcribed does not contain at least one nucleobase selected from G, C or T, where the G-, C- or T-free sequence has a length of more than 400 nucleotides.

    22.
    发明专利
    未知

    公开(公告)号:TR199800430A2

    公开(公告)日:1998-10-21

    申请号:TR9800430

    申请日:1998-03-10

    Applicant: HOECHST AG

    Abstract: Process for transcription of a DNA template in vitro in a cell-free system, where the template comprises a sequence to be transcribed under the control of at least one regulatory element, is characterised in that (a) an enriched and optionally purified extract of cell nuclei and at least one labelled nucleotide are used for the transcription, where the extract can optionally be supplemented or partly or completely replaced by transcription factors and/or cofactors, (b) proteins present in the reaction mixture at the end of transcription are optionally separated and/or degraded, (c) the labelled transcript is bound to a solid support, (d) excess labelled nucleotide is removed, and (e) the amount of labelled transcript is determined. Also claimed is a DNA template as above in which the sequence to be transcribed does not contain at least one nucleobase selected from G, C or T, where the G-, C- or T-free sequence has a length of more than 400 nucleotides.

    IN-VITRO TRANSCRIPTION PROCESSES FOR SCREENING NATURAL PRODUCTS AND OTHER CHEMICAL SUBSTANCES

    公开(公告)号:CA2231745A1

    公开(公告)日:1998-09-12

    申请号:CA2231745

    申请日:1998-03-11

    Applicant: HOECHST AG

    Abstract: The invention relates to an in-vitro process for analyzing transcription of vira l and cellular genes which can be automated and which is suitable for efficient and economical bulk screening with the aim of finding specific chemical lead structu res which have a selective effect on gene activity. The process for the cell-free in-vitro transcription of a DNA template comprisin g a DNA sequence to be transcribed which is under the control of at least one gene-regulatory element comprises a) using, for the transcription, a concentrated and, if appropriate, purified ex tract from cell nuclei which, if appropriate, can be complemented, or partially or ful ly replaced, by transcription factors and/or cofactors, and at least one labeled nucleotide, b) if appropriate isolating and/or degrading the proteins in the reaction mixtur e after transcription, c) binding the labeled transcript to a solid matrix, d) removing the excess labeled nucleotides and e) determining the amount of labeled transcript.

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