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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Matsuda, I. Arai, N. Abe, E. Arai, K. De Waal Malefyt, R. |
| Description | Author Affiliation: Abe E ( Department of Molecular Biology, DNAX Research Institute of Molecular and Cellular Biology, Palo Alto, CA 94304-1104.); |
| Abstract | We have identified a DNA segment that confers responsiveness to antigen stimulation signals on the human interleukin (IL) 4 gene in Jurkat cells. The human IL-4 gene, of 10 kilobases, is composed of four exons and three introns. A cis-acting element (P sequence) resides in the 5' upstream region; no additional DNA segments with enhancer activity were identified in the human IL-4 gene. For further mapping purposes, a fusion promoter was constructed with the granulocyte/macrophage colony-stimulating factor basic promoter containing 60 base pairs of sequence upstream from the cap site of the mouse granulocyte/macrophage colony-stimulating factor gene and various lengths of the 5' upstream sequence of the IL-4 gene. The P sequence was located between positions -79 and -69 relative to the transcription start site of the human IL-4 gene, and this location was confirmed by base-substitution mutations. The plasmids carrying multiple copies of the P sequence showed higher responsiveness to the stimulation. The binding protein(s) that recognize the P sequence of the IL-4 gene were identified by DNA-mobility-shift assays. The binding of NF(P) (a DNA binding protein that specifically recognizes the P sequence) to the P sequence was abolished when oligonucleotides carrying base substitutions were used, indicating that the NF(P) interaction is sequence-specific and that binding specificity of the protein paralleled the sequence requirements for IL-4 expression in vivo. The P sequence does not share homology with the 5' upstream sequence of the IL-2 gene, even though surrounding sequences of the IL-4 gene share high homology with the IL-2 gene. We conclude that a different set of proteins recognize IL-2 and IL-4 genes. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 7 |
| Volume Number | 89 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1992-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Enhancer Elements, Genetic Interleukin-4 Genetics Lymphocyte Activation T-Lymphocytes Physiology Transcription Factors Animals Calcimycin Pharmacology DNA-Binding Proteins Gene Expression Regulation Drug Effects Genes Interleukin-2 Mice Molecular Sequence Data Oligodeoxyribonucleotides Chemistry Regulatory Sequences, Nucleic Acid T-Lymphocytes, Helper-Inducer Tetradecanoylphorbol Acetate Comparative Study Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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