Antitumor and anticholesterol preparations comprising...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 1/20 (2006.01) A61K 38/21 (2006.01) A61K 38/47 (2006.01) A61K 38/51 (2006.01) C07H 15/04 (2006.01) C07H 15/06 (2006.01) C12P 19/44 (2006.01)

Patent

CA 2208780

The invention concerns a new lipoteichoic acid which can be isolated from the new Streptococcus sp DSM 8747. The new LTA is called LTA-T. It has a lipid anchor, which is a galacto-furanosyl-beta-1-3- glycerol with different rests of fatty acids esterified to the two adjacent hydroxy groups in the glycerol moiety and a non-glycosylated, linear, unbranched GroP chain with an unusual short hydrophilic GroP chain. The hydrophilic backbone consists of only 10 glycerophosphate units esterified with D-alanine in an extent of 30 %. The invention further concerns a pharmaceutical composition with the new LTA-T, optionally together with a monokine and/or hyaluronidase, a method of treating cancer comprising administration of an antitumor effective amount thereof, a method of producing the new compound and the new pharmaceutical composition, two degradation products of the new LTA-T and their use, and the new Streptococcus strain from which the new compound can be isolated.

L'invention concerne un nouvel acide lipotéichoïque pouvant être isolé à partir du nouveau Streptococcus sp DSM 8747. Le nouveau LTA est appelé LTA-T. Il présente une ancre lipidique, laquelle est un galactofuranosyl-bêta-1-3-glycérol avec différents restes d'acides gras estérifiés en les deux groupes hydroxy adjacents dans la fraction glycérol et une chaîne GroP non glycosilée linéaire non ramifiée présentant une chaîne GroP inhabituelle courte hydrophile. Le squelette hydrophile se compose de seulement 10 unités de glycérophosphate estérifiées avec de la D-alanine dans une mesure de 30 %. L'invention concerne également une composition pharmaceutique présentant le nouveau LTA-T, facultativement avec une monokine et/ou une hyaluronidase, un procédé de traitement du cancer consistant en l'administration d'une dose antitumorale efficace de celle-ci, un procédé de production du nouveau composé ainsi qu'une nouvelle composition pharmaceutique, deux produits de dégradation du nouveau LTA-T ainsi que leur utilisation, et la nouvelle souche de Streptococcus de laquelle on peut isoler le nouveau composé.

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