Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Hormones – e.g. – prolactin – thymosin – growth factors – etc.
Patent
1988-08-23
1991-09-03
Moskowitz, Margaret
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Hormones, e.g., prolactin, thymosin, growth factors, etc.
435 694, A61K 3736, C12N 122
Patent
active
050456334
ABSTRACT:
Biologically active PDGF analogs expressed in eucaryotic cells are disclosed. The analogs are produced by yeast strains transformed with an extrachromosomal element composed of a strong transcriptional promoter directing the expression of a gene which encodes a protein having substantially the same biological activity as PDGF. Suitable genes include the v-sis gene or a derivative of the v-sis gene of simian sarcoma virus or portions thereof, or the human cDNA gene for PDGF or portions thereof. In particular, DNA sequences encoding polypeptides substantially homologous to the B chain of PDGF are preferred. A secretory signal sequence may be provided upstream of the gene, enabling secretion of the gene product from the host cell. Mitogenic activity is one of the biological activites possessed by these PDGF analogs, making them useful in promoting the growth of mammalian cells.
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Kelly James D.
Murray Mark J.
Guest Shelly J.
Moskowitz Margaret
ZymoGenetics Inc.
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