摘要:
IGF-I and insulin variants are provided that selectively bind to IGFBP-1 or IGFBP-3. These agonist variants are useful, for example, to improve the half-lives of IGF-I and insulin, respectively.
摘要:
Human insulin-like growth factor is synthesized in recombinant cell culture by host cells transformed with expression vectors bearing DNA encoding human insulin-like growth factor.
摘要:
Methods are provided for treating or alleviating the symptoms of subjects with psychological disorders, metabolic disorders, chronic stress-related disorders, sleep disorders, conditions associated with sexual senescence, aging, or premature aging by treating such subjects with IGF or mutant IGF either alone or complexed with IGFBP-3. Methods for increasing the levels of DHEA or DHEAS and treating or alleviating the symptoms of subjects with disorders characterized by low levels of DHEA or DHEAS by administering effective amounts of IGF or mutant IGF alone or complexed with IGFBP-3 are also provided. Methods for increasing the level of T4 and treating or alleviating the symptoms of subjects with disorders characterized by low levels of T3 or T4 by administering effective amounts of IGF or mutant IGF alone or complexed with IGFBP-3 are additionally provided.
摘要:
The present invention relates to the finding and construction of fish insulin-like growth factor II (IGF-II) cDNAs which can be cloned and expressed in cells. This invention also relates to the production of biologically active fish IGF-II polypeptides by a gene expression system using fish IGF-II cDNAs. The fish IGF-II cDNAs have 1977 bp which transcribe into a prepeptide (signal peptide), and B, C, A, D, E domain peptides. The fish mature IGF-II is a single polypeptide containing the NH2—B—C—A—D—COOH domains. The mature IGF-II polypeptide is 7 kDa in weight and has 70 amino acids. The fish recombinant IGF-II cDNA can be cloned and expressed in E. coli, yeast, baculovirus, and fish cells. The isolated and purified IGF-II E domain peptide has mitogenic and anti-tumor activity.