Dendritic cell compositions and methods

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 5/0784 (2010.01) A61K 35/14 (2006.01) A61K 39/00 (2006.01)

Patent

CA 2602434

Methods are provided for the production of dendritic cells from monocytes that have been incubated at a temperature of 1~C - 34~C for a period of approximately 6 to 96 hours from the time they are isolated from a subject. After the incubation period, the monocytes can then be induced to differentiate into dendritic cells. Mature dendritic cells made by the methods of the invention have increased levels of one or more of CD80, CD83, CD86, MHC class I molecules, or MHC class II molecules as compared to mature dendritic cells prepared from monocytes that have not been held at 1~C - 34~C for at least 6 hours from the time they were isolated from a subject. Dendritic cells made by the methods of the invention are useful for the preparation of vaccines and for the stimulation of T cells.

L'invention concerne des méthodes destinées à la production de cellules dendritiques à partir de monocytes qui ont été incubés à une température comprise entre 1 °C et 34 °C pendant 6 à 96 heures environ à partir du moment où ils ont été isolés du patient. Après la période d'incubation, une différenciation des monocytes en cellules dendritiques peut être induite. Les cellules dendritiques matures obtenues selon les méthodes de l'invention présentent des taux élevés d'une ou plusieurs molécules de classe I du CMH, telles que CD80, CD83, CD86, ou de molécules de classe II du CMH, par rapport à des cellules dendritiques matures préparées à partir de monocytes qui n'ont pas été maintenus à une température comprise entre 1 °C et 34 °C pendant au moins 6 heures à partir du moment où ils ont été isolés du patient. Les cellules dendritiques obtenues selon les méthodes de l'invention sont utiles pour la préparation de vaccins et pour la stimulation des lymphocytes T.

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