Immortalized retinal cell lines and their application

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/10 (2006.01) A61K 35/44 (2006.01) C12N 5/06 (2006.01) C12Q 1/02 (2006.01)

Patent

CA 2225520

The invention features immortalized retina-derived (retinal endothelial or retinal epithelial pigmentary) cell lines capable of being implanted in the retina and of carrying a therapeutic substance to the eye and to the central nervous system. Such lines can also be used as a model for studying blood central nervous system interfaces. These lines are derived from primary retinal cultures selected from the group consisting of primary retinal endothelial cells and primary retinal epithelial cells, comprise a nucleic acid fragment containing at least one immortalizing fragment of a heat-sensitive viral oncogene, which nucleic fragment is optionally associated with at least one selection gene, and have the morphological characteristics and at least the expression characteristics of the surface antigens of corresponding primary cultures.

Lignées cellulaires immortalisées, d'origine rétinienne (endothéliale rétinienne et épithéliale pigmentaire rétinienne) aptes à être implantées dans la rétine et aptes à véhiculer une substance d'intérêt thérapeutique au niveau de l'oeil et du système nerveux central. De telles lignées peuvent également servir de modèle d'étude des interfaces sang-système nerveux central. Ces lignées sont dérivées de cultures primaires rétiniennes sélectionnées dans le goupe constitué par les cellules endothéliales rétiniennes primaires et les cellules primaires épithéliales de rétine, comprennent un fragment d'acide nucléique comprenant au moins un fragment immortalisant d'un oncogène viral thermo-sensible, lequel fragment d'acide nucléique est éventuellement associé à au moins un gène de sélection et présentent les caractéristiques morphologiques et au moins les caractéristiques d'expression des antigènes de surface des cellules de cultures primaires correspondantes.

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