Method and compositions for obtaining mature dendritic cells

Details Method and compositions for obtaining mature dendritic cells Method and compositions for obtaining mature dendritic cells

1996-02-12

2010-02-09

Ewoldt, G. R (Department: 1644)

Chemistry: molecular biology and microbiology

Animal cell, per se ; composition thereof; process of...

Method of regulating cell metabolism or physiology

C435S385000, C435S386000, C436S063000, C436S068000

Reexamination Certificate

active

07659119

ABSTRACT:
We describe an improved method for generating sizable numbers of mature dendritic cells from nonproliferating progenitors in human blood. The first step or “priming” phase is a culture of T cell depleted mononuclear cells in medium supplemented with GM-CSF and IL-4 to produce immature dendritic cells. The second step or “differentiation” phase requires the exposure to dendritic cell maturation factor such as monocyte conditioned medium. Using this two-step approach, substantial yields are obtained. The dendritic cells derive from this method have all the features of mature cells. They include a stellate cell shape, nonadherence to plastic, and very strong T cell stimulatory activity. The mature dendritic cells produced according to this invention are useful for activating T cells.

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