Modified milk growth factor

C - Chemistry – Metallurgy – 07 – K

Patent

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Details

C07K 14/475 (2006.01) A23J 1/20 (2006.01) A61K 38/18 (2006.01) C07K 1/18 (2006.01) C07K 1/34 (2006.01) C07K 1/36 (2006.01) C12N 5/00 (2006.01) C12N 5/02 (2006.01) A61K 38/00 (2006.01)

Patent

CA 2188654

The invention provides a process for preparing a plurality of modified milk growth factors which process includes: providing a milk product extract including a plurality of milk growth factors having basic to approximately neutral isoelectric points and a source of acid; subjecting the milk product extract to transient acidification utilising the acid source; and isolating a plurality of modified milk growth factors from the transiently acidified milk product extract. Also provided are growth promoting compositions, cell culture compositions, and pharmaceutical or veterinary compositions for the treatment of surface wounds, gastrointestinal injuries, diseases or ulcers, each including a plurality of modified milk growth factors having isoelectric points above approximately 6.0 and molecular weights in the range of approximately 5000 to 30.000, the milk growth factors being modified by transient acidification.

L'invention concerne un procédé permettant de préparer plusieurs facteurs de croissance modifiés contenus dans le lait. Il consiste à disposer d'un extrait d'un produit laitier comportant plusieurs facteurs de croissance du lait, dotés de points isoélectriques basiques à approximativement neutres, et d'une source d'acide, puis à soumettre cet extrait de produit laitier à une acidification transitoire en utilisant la source d'acide, et à isoler plusieurs facteurs de croissance modifiés du lait dans cet extrait acidifié de produit laitier. L'invention concerne aussi des compositions de stimulation de croissance et de cultures cellulaires, et des compositions pharmaceutiques ou vétérinaires destinées au traitement des lésions superficielles et des lésions, maladies ou ulcères gastro-intestinaux, chacune contenant plusieurs facteurs de croissance modifiés du lait, dotés de points isoélectriques dont le nombre est d'au moins environ 6 et de poids moléculaires situés entre environ 5000 et 30000, ces facteurs de croissance étant modifiés par acidification transitoire.

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