Monocyte isolation for maturation of dendritic cells with pluribead®

Isolation

Sample material	10 ml human buffy coat
Isolation method	Non-magnetic with 280µl CD14 S-pluriBead® anti-hu or 300µl M-pluriBead® anti-hu
Yield	~6 * 10^6 S-pluriBead® or ~12 * 10^6 M-pluriBead®
Vitality	>92% (Trypan blue staining)
Purity	~97%

Monocyte isolation, differentiation and stimulation protocol

Wash sample material twice with provided Washing Buffer (PBS + 0,05 % BSA and 2 mM EDTA, pH 7,4) in order to reduce soluble CD14. Add pluriBead CD14 for isolation of monocytes into the sample tube and incubate on a pluriPlix or wiping rolling mixer for 20 minutes.

After isolation, resuspend the cells in 1ml of RPMI 1640-medium (+10 % FCS and 1x Pen/Strep) and determine the cell number. For the cultivation of monocytes in a 24-well cell culture plate, 1 million cells per well are used and incubated with 1ml monocytes-culture-medium (RPMI 1640 + 10 % FCS, 1x Pen/Strep, 2000 U/ml GM-CSF und 200 U/ml IL-4) at 37 °C and 5 % carbon dioxid.

After 24h, remove the medium and add 1ml fresh monocytes-culture-medium. Then, the cells are cultured for 4 more days. After a total of 5 days, stimulate the cells with 100ng/ml LPS for another 24h. The activated cells are then removed with trypsin and the maturation rate to dentritic cells from monocytes is detected by fluorescent-analysis of CD1a, CD14 and CD83.

Data

Fluorescent analysis of mature dentritic cells CD11a+, CD14+, CD83+

CD14+ cells after isolation in culture, Maturation of monocytes to dendritic cells after 5 days of culture with GM-CSIF/IL-4 and stimulation with LPS