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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Böhlen, P. Esch, F. Gospodarowicz, D. Baird, A. Ling, N. |
| Abstract | Fibroblast growth factor (FGF) has been purified to homogeneity from bovine pituitaries by two methods. Starting material for both methods was an FGF preparation partially purified as described by Gospodarowicz [Gospodarowicz, D. (1975) J. Biol. Chem. 250, 2515-2520]. Purification procedure I involved cation-exchange and reversed-phase HPLC, while procedure II employed gel filtration and ion-exchange chromatography. Isolation was monitored by testing column fractions for their capacity to stimulate the proliferation of vascular endothelial cells in vitro. The growth factor has an approximate molecular weight of 16,000. Its amino-terminal sequence was determined as Pro-Ala-Leu-Pro-Glu-Asp-Gly-Gly-Ser-Gly-Ala-Phe-Pro-Pro-Gly. Sequence and amino acid composition indicate that the structure of pituitary FGF is different from that of other known growth factors. Pituitary FGF, as isolated under nonacidic conditions (procedure II), has high potency and intrinsic activity to stimulate adult bovine aortic endothelial cells (half-maximal proliferation at 2 pM). Acidic conditions as in procedure I, however, lead to about 90% loss of potency while the intrinsic activity remains intact (identical maximal stimulation values). By all other criteria (molecular weight, amino acid composition, amino-terminal sequence), the two preparations are indistinguishable. Antibodies were raised in rabbits against a synthetic peptide representing the first nine residues of the amino-terminal sequence of the pituitary FGF. The polyclonal antibodies recognize the synthetic peptide and the purified growth factor on an equimolar basis and are capable of inhibiting mitogenic activity in vitro. This report describes a partial chemical characterization of a pituitary FGF and demonstrates rigorously that the characterized protein possesses the mitogenic activity commonly referred to as 'basic pituitary FGF.' |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 17 |
| Volume Number | 81 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1984-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Fibroblast Growth Factors Isolation & Purification Pituitary Gland Amino Acid Sequence Animals Aorta, Thoracic Cytology Cell Division Drug Effects Cells, Cultured Chromatography, Gel Chromatography, Ion Exchange Endothelium Pharmacology Molecular Weight Radioimmunoassay Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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