Efficient methods for producing antimicrobial cationic...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/62 (2006.01) C07K 14/47 (2006.01) C12N 1/21 (2006.01) C12N 5/10 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2351737

Endogenously produced cationic antimicrobial peptides are ubiquitous components of host defenses in mammals, birds, amphibia, insects, and plants. Cationic peptides are also effective when administered as therapeutic agents. A practical drawback in cationic peptide therapy, however, is the cost of producing the agents. The methods described herein provide a means to efficiently produce cationic peptides from recombinant host cells. These recombinantly-produced cationic peptides can be rapidly purified from host cell proteins using anion exchange chromatography.

La présente invention concerne des procédés permettant de produire avec efficacité des peptides cationiques à partir de cellules hôtes de recombinaison. En effet, chez les mammifères, les oiseaux, les amphibiens, les insectes et les végétaux, les peptides antimicrobiens cationiques endogènes constituent les composants ubiquistes des défenses contre les hôtes, et l'administration de ces peptides cationiques donne également de bons résultats thérapeutiques. Néanmoins, le coût de production de ces agents constitue un frein à l'utilisation thérapeutique de ces peptides cationiques. L'invention propose ainsi d'utiliser la chromatographie à échange anionique pour accélérer l'extraction, dans les protéines des cellules hôtes, de ces peptides cationiques produits par recombinaison.

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