Abstract
Human insulin-like growth factor I (somatomedin C) with 70 amino acid residues and three disulfide bridges has been synthesized by the solid-phase method. The synthetic product behaves as a pure polypeptide in paper electrophoresis, isoelectric focusing, and high-performance liquid chromatography, Its elution behavior in Sephadex G-50, isoelectric point, amino acid composition, and growth-stimulating activity in bovine adrenal cortical cells or granulosa cells are comparable to those reported for the natural product. In radioimmunoassay, the synthetic product is indistinguishable from the natural hormone when either synthetic or natural product is used as the labeled ligand.
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Selected References
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- Blake J., Li C. H. The synthesis and biological activity of (165, 182, 189-S-carbamidomethylcysteine)-human growth hormone-(140-191). Int J Pept Protein Res. 1975;7(6):495–501. doi: 10.1111/j.1399-3011.1975.tb02471.x. [DOI] [PubMed] [Google Scholar]
- Blake J. Use of cyclopentyl ester protection for aspartic acid to reduce base catalyzed succinimide formation in solid-phase peptide synthesis. Int J Pept Protein Res. 1979 Apr;13(4):418–425. doi: 10.1111/j.1399-3011.1979.tb01901.x. [DOI] [PubMed] [Google Scholar]
- Blundell T. L., Humbel R. E. Hormone families: pancreatic hormones and homologous growth factors. Nature. 1980 Oct 30;287(5785):781–787. doi: 10.1038/287781a0. [DOI] [PubMed] [Google Scholar]
- DAUGHADAY W. H., PARKER M. L. Sulfation factor measurement as an aid in the recognition of pituitary dwarfism. J Clin Endocrinol Metab. 1963 Jul;23:638–650. doi: 10.1210/jcem-23-7-638. [DOI] [PubMed] [Google Scholar]
- ELLMAN G. L. Tissue sulfhydryl groups. Arch Biochem Biophys. 1959 May;82(1):70–77. doi: 10.1016/0003-9861(59)90090-6. [DOI] [PubMed] [Google Scholar]
- Furlanetto R. W., Underwood L. E., Van Wyk J. J., D'Ercole A. J. Estimation of somatomedin-C levels in normals and patients with pituitary disease by radioimmunoassay. J Clin Invest. 1977 Sep;60(3):648–657. doi: 10.1172/JCI108816. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gospodarowicz D., Ill C. R., Hornsby P. J., Gill G. N. Control of bovine adrenal cortical cell proliferation by fibroblast growth factor. Lack of effect of epidermal growth factor. Endocrinology. 1977 Apr;100(4):1080–1089. doi: 10.1210/endo-100-4-1080. [DOI] [PubMed] [Google Scholar]
- HAVEL R. J., EDER H. A., BRAGDON J. H. The distribution and chemical composition of ultracentrifugally separated lipoproteins in human serum. J Clin Invest. 1955 Sep;34(9):1345–1353. doi: 10.1172/JCI103182. [DOI] [PMC free article] [PubMed] [Google Scholar]
- HOFMANN K., HAAS W., SMITHERS M. J., ZANETTI G. STUDIES ON POLYPEPTIDES. XXXI. SYNTHETIC PEPTIDES RELATED TO THE N-TERMINUS OF BOVINE PANCREATIC RIBONUCLEASE (POSITIONS 12-20). J Am Chem Soc. 1965 Feb 5;87:631–639. doi: 10.1021/ja01081a041. [DOI] [PubMed] [Google Scholar]
- Hagenmaier H., Frank H. Increased coupling yields in solid phase peptide synthesis with a modified carbodiimide coupling procedure. Hoppe Seylers Z Physiol Chem. 1972 Dec;353(12):1973–1976. [PubMed] [Google Scholar]
- Hintz R. L., Liu F., Marshall L. B., Chang D. Interaction of somatomedin-C with an antibody directed against the synthetic C-peptide region of insulin-like growth factor-I. J Clin Endocrinol Metab. 1980 Feb;50(2):405–407. doi: 10.1210/jcem-50-2-405. [DOI] [PubMed] [Google Scholar]
- Ill C. R., Gospodarowicz D. Factors involved in supporting the growth and steroidogenic functions of bovine adrenal cortical cells maintained on extracellular matrix and exposed to a serum-free medium. J Cell Physiol. 1982 Dec;113(3):373–384. doi: 10.1002/jcp.1041130305. [DOI] [PubMed] [Google Scholar]
- Kaufmann U., Zapf J., Froesch E. R. Growth-hormone dependence of non-suppressible insulin-like activity (NSILA) and of NSILA-carrier protein in rats. Acta Endocrinol (Copenh) 1978 Apr;87(4):716–727. doi: 10.1530/acta.0.0870716. [DOI] [PubMed] [Google Scholar]
- Kemp S. F., Rosenfeld R. G., Liu F., Gaspich S., Hintz R. L. Acute somatomedin response to growth hormone: radioreceptor assay versus radioimmunoassay. J Clin Endocrinol Metab. 1981 Apr;52(4):616–621. doi: 10.1210/jcem-52-4-616. [DOI] [PubMed] [Google Scholar]
- Rinderknecht E., Humbel R. E. Polypeptides with nonsuppressible insulin-like and cell-growth promoting activities in human serum: isolation, chemical characterization, and some biological properties of forms I and II. Proc Natl Acad Sci U S A. 1976 Jul;73(7):2365–2369. doi: 10.1073/pnas.73.7.2365. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rinderknecht E., Humbel R. E. Primary structure of human insulin-like growth factor II. FEBS Lett. 1978 May 15;89(2):283–286. doi: 10.1016/0014-5793(78)80237-3. [DOI] [PubMed] [Google Scholar]
- Rinderknecht E., Humbel R. E. The amino acid sequence of human insulin-like growth factor I and its structural homology with proinsulin. J Biol Chem. 1978 Apr 25;253(8):2769–2776. [PubMed] [Google Scholar]
- SALMON W. D., Jr, DAUGHADAY W. H. A hormonally controlled serum factor which stimulates sulfate incorporation by cartilage in vitro. J Lab Clin Med. 1957 Jun;49(6):825–836. [PubMed] [Google Scholar]
- Sakakibara S., Shimonishi Y., Kishida Y., Okada M., Sugihara H. Use of anhydrous hydrogen fluoride in peptide synthesis. I. Behavior of various protective groups in anhydrous hydrogen fluoride. Bull Chem Soc Jpn. 1967 Sep;40(9):2164–2167. doi: 10.1246/bcsj.40.2164. [DOI] [PubMed] [Google Scholar]
- Savion N., Lui G. M., Laherty R., Gospodarowicz D. Factors controlling proliferation and progesterone production by bovine granulosa cells in serum-free medium. Endocrinology. 1981 Aug;109(2):409–420. doi: 10.1210/endo-109-2-409. [DOI] [PubMed] [Google Scholar]
- Svoboda M. E., Van Wyk J. J., Klapper D. G., Fellows R. E., Grissom F. E., Schlueter R. J. Purification of somatomedin-C from human plasma: chemical and biological properties, partial sequence analysis, and relationship to other somatomedins. Biochemistry. 1980 Feb 19;19(4):790–797. doi: 10.1021/bi00545a027. [DOI] [PubMed] [Google Scholar]
- Tait J. F., Weinman S. A., Bradshaw R. A. Dissociation kinetics of 125I-nerve growth factor from cell surface receptors. Acceleration by unlabeled ligand and its relationship to negative cooperativity. J Biol Chem. 1981 Nov 10;256(21):11086–11092. [PubMed] [Google Scholar]
- Ui N. Conformational studies on proteins by isoelectric focusing. Ann N Y Acad Sci. 1973 Jun 15;209:198–209. doi: 10.1111/j.1749-6632.1973.tb47529.x. [DOI] [PubMed] [Google Scholar]
- Van Wyk J. J., Svoboda M. E., Underwood L. E. Evidence from radioligand assays that somatomedin-C and insulin-like growth factor-I are similar to each other and different from other somatomedins. J Clin Endocrinol Metab. 1980 Jan;50(1):206–208. doi: 10.1210/jcem-50-1-206. [DOI] [PubMed] [Google Scholar]
- Yamashiro D., Noble R. L., Li C. H. Human pituitary growth hormone. 36. The solid-phase synthesis of the carboxyl terminal cyclic dodecapeptide. J Org Chem. 1973 Oct 5;38(20):3561–3565. doi: 10.1021/jo00960a026. [DOI] [PubMed] [Google Scholar]
- Yamashiro D. Reduction of methionine sulfoxide in peptide synthesis by use of 2-mercaptopyridine in liquid hydrogen fluoride. Int J Pept Protein Res. 1982 Jul;20(1):63–65. doi: 10.1111/j.1399-3011.1982.tb02653.x. [DOI] [PubMed] [Google Scholar]
