Methods and compositions for increasing longevity and...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/20 (2006.01) C12N 5/02 (2006.01) C12N 5/10 (2006.01) C12N 15/90 (2006.01) C12P 21/02 (2006.01) C07K 16/00 (2006.01) C12M 3/00 (2006.01)

Patent

CA 2576464

Disclosed herein are compositions and methods for increasing the longevity of a cell culture and permitting the increased production of proteins, preferably recombinant proteins, such as antibodies, peptides, enzymes, growth factors, interleukins, interferons, hormones, and vaccines. By transfecting cells in culture with an apoptosis-inhibiting gene or vector, cells in culture can survive longer, resulting in extension of the state and yield of protein biosynthesis. Expression of the apoptosis-inhibitor within the cells, because it does not kill the cells, allows the cells, or an increased fraction thereof, to be maintained in culture for longer periods. This invention then allows for controlled, enhanced protein production of cell lines for commercial and research uses, particularly the enhanced production of growth factors, interferons, interleukins, hormones, enzymes, and monoclonal antibodies, and the like. The method preferentially involves eukaryotic cells in culture, and more advantageously mammalian cells in culture.

L'invention concerne des compositions et des procédés destinés à accroître la longévité d'une culture cellulaire et à permettre la production accrue de protéines, de préférence des protéines recombinantes, telles que des anticorps, des peptides, des enzymes, des facteurs de croissance, des interleukines, des interférons, des hormones, et des vaccins. Par transformation de cellules dans la culture avec un gène ou un vecteur inhibant l'apoptose, des cellules de la culture peuvent survivre plus longtemps, ce qui entraîne une extension de l'état et de la production de biosynthèse protéique. L'expression de l'inhibiteur d'apoptose dans les cellules, étant donné qu'il ne tue pas les cellules, permet aux cellules, ou à une fraction accrue de celles-ci, d'être maintenue dans la culture pour des périodes plus longues. Cette invention permet ensuite de commander, améliorer la production protéique de lignées cellulaires pour des usages commerciaux et de recherche, notamment la production améliorée de facteur de croissances, d'interférons, d'interleukines, d'hormones, d'enzymes et d'anticorps monoclonaux, et analogue. Le procédé comprend de préférence des cellules eukariotiques dans la culture, et de façon plus avantageuse des cellules mammifères.

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