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  • 1
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    Repression of the insulin-like growth factor II gene by the Wilms tumor suppressor WT1 (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-07-31
    Description: The Wilms tumor suppressor gene wt1 encodes a zinc finger DNA binding protein, WT1, that functions as a transcriptional repressor. The fetal mitogen insulin-like growth factor II (IGF-II) is overexpressed in Wilms tumors and may have autocrine effects in tumor progression. The major fetal IGF-II promoter was defined in transient transfection assays as a region spanning from nucleotides -295 to +135, relative to the transcription start site. WT1 bound to multiple sites in this region and functioned as a potent repressor of IGF-II transcription in vivo. Maximal repression was dependent on the presence of WT1 binding sites on each side of the transcriptional initiation site. These findings provide a molecular basis for overexpression of IGF-II in Wilms tumors and suggest that WT1 negatively regulates blastemal cell proliferation by limiting the production of a fetal growth factor in the developing vertebrate kidney.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drummond, I A -- Madden, S L -- Rohwer-Nutter, P -- Bell, G I -- Sukhatme, V P -- Rauscher, F J 3rd -- CA 10817/CA/NCI NIH HHS/ -- CA 47983/CA/NCI NIH HHS/ -- CA 52009/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1992 Jul 31;257(5070):674-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of Chicago, IL 60637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1323141" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Blotting, Northern ; DNA/chemistry/metabolism ; DNA-Binding Proteins/*metabolism ; Deoxyribonuclease I/metabolism ; *Gene Expression Regulation, Neoplastic ; Genes, Wilms Tumor/*physiology ; Humans ; Insulin-Like Growth Factor II/*genetics ; Kidney/embryology/metabolism ; Mice ; Molecular Sequence Data ; Promoter Regions, Genetic ; Rats ; Sequence Homology, Nucleic Acid ; Transfection ; WT1 Proteins ; Wilms Tumor/genetics/metabolism ; Zinc Fingers
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Identification of a zinc finger protein that inhibits IL-2 gene expression (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: Transient activation of the interleukin-2 (IL-2) gene after antigen recognition by T lymphocytes is crucial for subsequent T cell proliferation and differentiation. Several IL-2 gene regulatory elements and binding factors necessary for activation of the IL-2 gene have been defined. However, little is known about negative regulation of IL-2 expression, which is likely to be important in the rapid shut-off of IL-2 transcription. A nucleotide sequence element (NRE-A) that negatively regulates IL-2 expression has been identified within the IL-2 gene. T cell nuclear extracts contained an NRE-A binding activity. A complementary DNA was isolated that encodes a zinc finger-containing protein that suppressed IL-2 gene expression. The observation of negative regulation of the immunoglobulin heavy chain gene enhancer by an element similar to NRE-A suggests that related proteins may regulate multiple immune response genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Williams, T M -- Moolten, D -- Burlein, J -- Romano, J -- Bhaerman, R -- Godillot, A -- Mellon, M -- Rauscher, F J 3rd -- Kant, J A -- AI23879/AI/NIAID NIH HHS/ -- CA23413/CA/NCI NIH HHS/ -- CA54428/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1791-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, School of Medicine, University of New Mexico, Albuquerque 87131.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1840704" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cell Line ; DNA Probes ; *Enhancer Elements, Genetic ; *Gene Expression Regulation ; *Genes, Immunoglobulin ; Humans ; Immunoglobulin Heavy Chains/*genetics ; Interleukin-2/*genetics ; Mice ; Molecular Sequence Data ; Oligodeoxyribonucleotides ; Regulatory Sequences, Nucleic Acid ; Restriction Mapping ; T-Lymphocytes/*immunology ; *Transcription, Genetic ; Zinc Fingers/*genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Binding of the Wilms' tumor locus zinc finger protein to the EGR-1 consensus sequence (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-11-30
    Description: The Wilms' tumor locus (WTL) at 11p13 contains a gene that encodes a zinc finger-containing protein that has characteristics of a DNA-binding protein. However, binding of this protein to DNA in a sequence-specific manner has not been demonstrated. A synthetic gene was constructed that contained the zinc finger region, and the protein was expressed in Escherichia coli. The recombinant protein was used to identify a specific DNA binding site from a pool of degenerate oligonucleotides. The binding sites obtained were similar to the sequence recognized by the early growth response-1 (EGR-1) gene product, a zinc finger-containing protein that is induced by mitogenic stimuli. A mutation in the zinc finger region of the protein originally identified in a Wilms' tumor patient abolished its DNA-binding activity. These results suggest that the WTL protein may act at the DNA binding site of a growth factor-inducible gene and that loss of DNA-binding activity contributes to the tumorigenic process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rauscher, F J 3rd -- Morris, J F -- Tournay, O E -- Cook, D M -- Curran, T -- CA0917-15/CA/NCI NIH HHS/ -- CA10817/CA/NCI NIH HHS/ -- CA23413/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1990 Nov 30;250(4985):1259-62.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute, Philadelphia, PA 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2244209" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites ; Binding, Competitive ; Chromosomes, Human, Pair 11 ; Consensus Sequence ; DNA/genetics/*metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Early Growth Response Protein 1 ; Escherichia coli/genetics ; *Genes, Wilms Tumor ; Humans ; *Immediate-Early Proteins ; Molecular Sequence Data ; Mutation ; Oligonucleotides/metabolism ; Polymerase Chain Reaction ; Recombinant Proteins/metabolism ; Restriction Mapping ; Transcription Factors/genetics/*metabolism ; *Zinc Fingers/genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Redox regulation of fos and jun DNA-binding activity in vitro (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-09-07
    Description: The proto-oncogenes c-fos and c-jun function cooperatively as inducible transcription factors in signal transduction processes. Their protein products, Fos and Jun, form a heterodimeric complex that interacts with the DNA regulatory element known as the activator protein-1 (AP-1) binding site. Dimerization occurs via interaction between leucine zipper domains and serves to bring into proper juxtaposition a region in each protein that is rich in basic amino acids and that forms a DNA-binding domain. DNA binding of the Fos-Jun heterodimer was modulated by reduction-oxidation (redox) of a single conserved cysteine residue in the DNA-binding domains of the two proteins. Furthermore, a nuclear protein was identified that reduced Fos and Jun and stimulated DNA-binding activity in vitro. These results suggest that transcriptional activity mediated by AP-1 binding factors may be regulated by a redox mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abate, C -- Patel, L -- Rauscher, F J 3rd -- Curran, T -- New York, N.Y. -- Science. 1990 Sep 7;249(4973):1157-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology and Virology, Roche Institute of Molecular Biology, Nutley, NJ 07110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2118682" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell-Free System ; Cysteine/physiology ; DNA Mutational Analysis ; DNA-Binding Proteins/drug effects/*physiology ; Diamide/pharmacology ; Humans ; In Vitro Techniques ; Molecular Sequence Data ; Oxidation-Reduction ; Proto-Oncogene Proteins/*physiology ; Proto-Oncogene Proteins c-fos ; Proto-Oncogene Proteins c-jun ; Rats ; Recombinant Proteins ; Signal Transduction ; Structure-Activity Relationship ; Sulfhydryl Reagents/pharmacology ; Transcription Factors/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Transcriptional repression mediated by the WT1 Wilms tumor gene product (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-07
    Description: The wt1 gene, a putative tumor suppressor gene located at the Wilms tumor (WT) locus on chromosome 11p13, encodes a zinc finger-containing protein that binds to the same DNA sequence as EGR-1, a mitogen-inducible immediate-early gene product that activates transcription. The transcriptional regulatory potential of WT1 has not been demonstrated. In transient transfection assays, the WT1 protein functioned as a repressor of transcription when bound to the EGR-1 site. The repression function was mapped to the glutamine- and proline-rich NH2-terminus of WT1; fusion of this domain to the zinc finger region of EGR-1 converted EGR-1 into a transcriptional repressor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Madden, S L -- Cook, D M -- Morris, J F -- Gashler, A -- Sukhatme, V P -- Rauscher, F J 3rd -- CA-0917-15/CA/NCI NIH HHS/ -- CA-23413/CA/NCI NIH HHS/ -- CA-52009/CA/NCI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1550-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wistar Institute of Anatomy and Biology, Philadelphia, PA 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1654597" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Cell Line ; Chromosomes, Human, Pair 11 ; DNA/genetics ; DNA-Binding Proteins/*genetics ; Gene Expression Regulation ; *Genes, Tumor Suppressor ; Humans ; Kidney Neoplasms/*genetics ; Molecular Sequence Data ; Repressor Proteins/*genetics ; *Transcription, Genetic ; Wilms Tumor/*genetics ; Zinc Fingers/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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