C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
530/13, 195/46,
C12N 15/18 (2006.01) C07K 14/49 (2006.01) C12N 15/62 (2006.01) C12N 5/06 (2006.01) C12N 5/08 (2006.01)
Patent
CA 1340846
Biologically active PDGF analogs expressed in eucaryotic cells are disclosed. The analogs are produced by eucaryotic cells transformed with a DNA construct comprising 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 activities possessed by these PDGF analogs, making them useful in promoting the growth of mammalian cells.
617115
Kelly James Darrel
Murray Mark Joseph
Ridout & Maybee Llp
Zymogenetics Inc.
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