Insulin and insulin-like growth factor I regulate a thyroid-specific nuclear protein that binds to the thyroglobulin promoter. 1992

P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
Instituto de Investigaciones Biomédicas, Consejo Superior de Investigaciones Científicas, Madrid, Spain.

The mechanism responsible for the stimulation of thyroglobulin (Tg) gene expression by insulin and insulin-like growth factor I (IGF-I) in rat thyroid FRTL-5 cells has been investigated. Both insulin and IGF-I stimulate transcription from the Tg promoter in a transient transfection assay demonstrating that the promoter used contains the DNA signals necessary for insulin and IGF-I regulation. Promoter mutations that interfere with the binding of thyroid transcription factor 1 (TTF-1), TTF-2, and the ubiquitous transcription factor abolish the insulin/IGF-I response, indicating that the three factors may be involved in the observed transcriptional control. Protein-DNA binding studies did not reveal any effect of insulin/IGF-I on the ubiquitous transcription factor and the TTF-1 binding capacity. Instead, TTF-2 is absent in nuclear extracts from cells depleted of serum and insulin. Addition of insulin or IGF-I restores the TTF-2 concentration to normal levels and requires ongoing protein synthesis. The insulin effect was maximal at 24 h and at a concentration of 1 microgram/ml. The same effect was observed with a 10-fold lower concentration of IGF-I. These results suggest that insulin (probably through the IGF-I receptor) and IGF-I modulate the levels of TTF-2, which results in an increased expression of the Tg gene.

UI MeSH Term Description Entries
D007328 Insulin A 51-amino acid pancreatic hormone that plays a major role in the regulation of glucose metabolism, directly by suppressing endogenous glucose production (GLYCOGENOLYSIS; GLUCONEOGENESIS) and indirectly by suppressing GLUCAGON secretion and LIPOLYSIS. Native insulin is a globular protein comprised of a zinc-coordinated hexamer. Each insulin monomer containing two chains, A (21 residues) and B (30 residues), linked by two disulfide bonds. Insulin is used as a drug to control insulin-dependent diabetes mellitus (DIABETES MELLITUS, TYPE 1). Iletin,Insulin A Chain,Insulin B Chain,Insulin, Regular,Novolin,Sodium Insulin,Soluble Insulin,Chain, Insulin B,Insulin, Sodium,Insulin, Soluble,Regular Insulin
D007334 Insulin-Like Growth Factor I A well-characterized basic peptide believed to be secreted by the liver and to circulate in the blood. It has growth-regulating, insulin-like, and mitogenic activities. This growth factor has a major, but not absolute, dependence on GROWTH HORMONE. It is believed to be mainly active in adults in contrast to INSULIN-LIKE GROWTH FACTOR II, which is a major fetal growth factor. IGF-I,Somatomedin C,IGF-1,IGF-I-SmC,Insulin Like Growth Factor I,Insulin-Like Somatomedin Peptide I,Insulin Like Somatomedin Peptide I
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009687 Nuclear Proteins Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus. Nucleolar Protein,Nucleolar Proteins,Nuclear Protein,Protein, Nuclear,Protein, Nucleolar,Proteins, Nuclear,Proteins, Nucleolar
D009928 Organ Specificity Characteristic restricted to a particular organ of the body, such as a cell type, metabolic response or expression of a particular protein or antigen. Tissue Specificity,Organ Specificities,Specificities, Organ,Specificities, Tissue,Specificity, Organ,Specificity, Tissue,Tissue Specificities
D011401 Promoter Regions, Genetic DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes. rRNA Promoter,Early Promoters, Genetic,Late Promoters, Genetic,Middle Promoters, Genetic,Promoter Regions,Promoter, Genetic,Promotor Regions,Promotor, Genetic,Pseudopromoter, Genetic,Early Promoter, Genetic,Genetic Late Promoter,Genetic Middle Promoters,Genetic Promoter,Genetic Promoter Region,Genetic Promoter Regions,Genetic Promoters,Genetic Promotor,Genetic Promotors,Genetic Pseudopromoter,Genetic Pseudopromoters,Late Promoter, Genetic,Middle Promoter, Genetic,Promoter Region,Promoter Region, Genetic,Promoter, Genetic Early,Promoter, rRNA,Promoters, Genetic,Promoters, Genetic Middle,Promoters, rRNA,Promotor Region,Promotors, Genetic,Pseudopromoters, Genetic,Region, Genetic Promoter,Region, Promoter,Region, Promotor,Regions, Genetic Promoter,Regions, Promoter,Regions, Promotor,rRNA Promoters
D011485 Protein Binding The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments. Plasma Protein Binding Capacity,Binding, Protein
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D004268 DNA-Binding Proteins Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases. DNA Helix Destabilizing Proteins,DNA-Binding Protein,Single-Stranded DNA Binding Proteins,DNA Binding Protein,DNA Single-Stranded Binding Protein,SS DNA BP,Single-Stranded DNA-Binding Protein,Binding Protein, DNA,DNA Binding Proteins,DNA Single Stranded Binding Protein,DNA-Binding Protein, Single-Stranded,Protein, DNA-Binding,Single Stranded DNA Binding Protein,Single Stranded DNA Binding Proteins
D000074482 Thyroid Nuclear Factor 1 A homeobox protein and transcription factor that localizes to the cell nucleus where it activates expression of thyroid specific genes such as THYROGLOBULIN and the THYROTROPIN RECEPTOR. It is critical for maintaining thyroid tissue in a differentiated state and also plays a role in lung development. Mutations in the NKX2-1 gene are associated with CHOREA, BENIGN HEREDITARY. Homeobox Protein Nkx-2.1,NK2 Homeobox 1 Protein,TITF-1 Protein,TITF1 Protein,TTF-1 Thyroid Nuclear Factor,Thyroid Transcription Factor 1,Thyroid-Specific Enhancer-Binding Protein,Enhancer-Binding Protein, Thyroid-Specific,Homeobox Protein Nkx 2.1,Nkx-2.1, Homeobox Protein,TITF 1 Protein,TTF 1 Thyroid Nuclear Factor,Thyroid Specific Enhancer Binding Protein

Related Publications

P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
January 1996, Journal of immunology (Baltimore, Md. : 1950),
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
October 1995, Molecular and cellular endocrinology,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
January 1987, Hormone and metabolic research. Supplement series,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
September 1989, The EMBO journal,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
June 1996, Molecular endocrinology (Baltimore, Md.),
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
August 2022, Structure (London, England : 1993),
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
July 1997, Endocrinology,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
July 1999, Endocrinology,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
January 1996, Experimental gerontology,
P Santisteban, and A Acebrón, and M Polycarpou-Schwarz, and R Di Lauro
January 2021, International journal of molecular sciences,
Copied contents to your clipboard!