Process for producing composite preparation containing...

A - Human Necessities – 61 – K

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A61K 48/00 (2006.01) A61K 9/10 (2006.01) A61K 9/19 (2006.01) A61K 31/70 (2006.01) A61K 31/7088 (2006.01) A61K 47/16 (2006.01) C07H 21/00 (2006.01) C07H 21/02 (2006.01)

Patent

CA 2333162

A process for producing a homogeneous nucleic-acid-containing composite preparation of good quality which is capable of sterilization by filtration and is characterized by containing no coarse particles having a size of 7 µm or larger, which are regarded as unsafe for the human body. The process for producing the preparation, containing a composite of a cationic carrier with a nucleic acid polymer, is characterized in that two single-stranded nucleic acid polymers capable of at least partly forming a double-stranded state are separately added, each in the single-stranded state, to either a cationic carrier or a material from which the cationic carrier is to be formed, and all these ingredients are subjected to a dispersing treatment.

On décrit un procédé de production d'une préparation composite contenant de l'acide nucléique homogène de bonne qualité qui peut être stérilisée par filtration et qui se caractérise par le fait qu'elle ne contient pas de grosses particules d'une taille supérieure ou égale à 7 microns qui sont considérées comme dangereuses pour le corps humain. Le procédé de production de la préparation qui contient un composite formé d'un vecteur cationique et d'un polymère d'acide nucléique se caractérise en ce que deux polymères d'acide nucléique monocaténaires capables de former au moins partiellement un état bicaténaire sont ajoutés séparément, chacun se trouvant dans l'état monocaténaire, à un vecteur cationique ou à un matériau à partir duquel peut être formé le vecteur cationique; tous ces ingrédients étant soumis à un traitement dispersant.

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