A method of producing biologically active human acidic...

C - Chemistry – Metallurgy – 12 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C12N 15/18 (2006.01) C07H 21/00 (2006.01) C07K 14/50 (2006.01) C12N 15/70 (2006.01) C12N 15/73 (2006.01) C12P 21/00 (2006.01)

Patent

CA 2419338

The gene of human acidic fibroblast growth factor 155 (haFGF 155) has been obtained by chemical synthesis. The nucleotide sequence of haFGF 155 gene has been deduced on the basis of haFGF 155 amino acid sequence as described in the literature. The amino acid sequence of the synthesized haFGF 155 does not differ from those described in the literature. The nucleotide sequence of haFGF gene differs from those described previously. For chemical synthesis of haFGF 155 gene, codons were used which are the ones most often used by E. coli in highly expressed E. coli proteins. A plasmid with haFGF 155 (phaFGF 155) gene was obtained and was used to transform E. coli. Production of haFGF 154 protein was achieved by cultivation of the producer strain under conditions which slow down the lytic development of lambda phage. The haFGF 154 protein accumulated in culture medium in a soluble condition as a result of the producer strain cells lysis by the lambda phage. The haFGF 154 protein constituted 20% of the soluble protein accumulated in the culture medium and its biological activity was demonstrated by its ability to generate new vessels (angiogenesis). The initiator methionine residue at position 1 of the FGF 155 protein was completely removed during protein synthesis resulting in an FGF 154 amino acid product. The use of the phage-dependent method to produce other forms of the haFGF protein is also disclosed.

L'invention concerne le gène du facteur de croissance de fibroblastes acide humain (haFGF 155) obtenu par synthèse chimique. La séquence nucléotidique du gène haFGF 155 est déduite sur la base de la séquence d'acide aminé haFGF 155 tel que cela est décrit dans les documents connus. La séquence d'acide aminé de haFGF 155 synthétisé ne diffère pas de celles décrites dans les documents connus. La séquence nucléotidique du gène haFGF 155 diffère de celles décrites antérieurement. En ce qui concerne la synthèse du gène haFGF 155, on a recours à des codons qui sont le plus souvent utilisés par E. coli dans des protéines E. coli fortement exprimées. On obtient un plasmide avec un gène haFGF 155 (phaFGF 155) que l'on utilise pour transformer E. coli. On réalise la production de la protéine haFGF 154 en cultivant la souche productrice dans des conditions qui retardent le développement lytique du phage lambda. La protéine haFGF 154 s'accumule en milieu de culture à l'état soluble à la suite de la lyse des cellules de la souche productrice par le phage lambda. La protéine haFGF 154 constitue 20 % de la protéine soluble accumulée dans le milieu de culture et son activité biologique est démontrée par sa capacité de générer de nouveaux vaisseaux (angiogenèse). Le résidu de méthionine initiateur en position 1 de la protéine FGF 155 a été entièrement éliminé lors de la synthèse de protéines donnant lieu à un produit d'acide aminé FGF 154. L'invention concerne également l'utilisation du procédé dépendant du phage pour produire d'autres formes de la protéine haFGF.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

A method of producing biologically active human acidic... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with A method of producing biologically active human acidic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A method of producing biologically active human acidic... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1687328

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.