Long-term cell culture compositions and genetically modified...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/06 (2006.01) A01K 67/00 (2006.01) A01K 67/027 (2006.01) C12N 5/16 (2006.01) C12N 5/22 (2006.01) A61K 35/12 (2006.01)

Patent

CA 2393071

The present invention generally relates to neural stem cells, preferably foetal neural stem cells and their progeny thereof. The present invention provides methods of isolating, culturing and propagating neural stem cells preferably foetal neural stem cells and hte development of neural stem cell lines and lineages. The present invention also relates to the use of neural stem cells and somatic cells (eg rat fetal fibroblasts) and cells expressing the telomerase catalytic component (TERT) for gene targeting and gene knockup experiments and for producing genetically modified animals.In a first aspect of the present invention there is provided a cellular composiiton comprising one or more cells having a property characteristic of a neural stem cell and wherein said neural stem cell is capble of long term culture. Preferably the cells have a property characteristic of a foetal neural stem cell. In another aspect of the present invention there is provided a method of producing an animal, said method comprising introducing a continuously growing donor cells nucleus from a continuously growing donor cell into an oocyte or embryo and allowing the resulting embryo to mature and to preferably develop to a foetus or an adult animal.

L'invention concerne en règle générale des cellules embryonnaires neuronales, de préférence foetales, et leur descendance. L'invention concerne en outre des procédés relatifs à l'isolation, à la mise en culture et à la propagation de cellules embryonnaires neuronales, de préférence foetales, et l'élaboration de lignées cellulaires correspondantes. L'invention concerne également l'utilisation de cellules embryonnaires neuronales et de cellules somatiques (par exemple, fibroblastes de rat d'origine foetale) et de cellules exprimant la composante catalytique de télomérase (TERT) pour les expériences de ciblage ou d'inactivation génique et pour la production d'animaux génétiquement modifiés. Selon un premier aspect, l'invention concerne une composition cellulaire comprenant une ou plusieurs cellules ayant une propriété caractéristique de cellule embryonnaire neuronale, ladite ou lesdites cellules embryonnaires neuronales se prêtant à une culture à long terme. De préférence, les cellules ont une propriété caractéristique de cellule embryonnaire neuronale de type foetal. Selon un autre aspect, l'invention concerne un procédé relatif à la production d'un animal, qui consiste à introduire un noyau cellulaire donneur à croissance continue depuis une cellule donneuse à croissance continue, dans un oocyte ou un embryon, et à permettre à l'embryon résultant d'arriver à maturité et de préférence à se développer sous la forme d'un foetus ou d'un animal adulte.

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