Table 2

Expression of HIV-1 receptors and adhesion molecules on donor cells.a

Surface ligands
Dendritic cellsb
Raji/ DC-SIGN
K562/ DC-SIGN

CD4
+
-
-
CCR5
+
-
-
CXCR4
+
+
+
Duffy antigen/receptor for chemokines (DARC)
ND
-
+/-
HLA-I (MHC-I)
++
++
+
HLA-DR (MHC-II)c
++
++
-
ICAM-1 (CD54)
+
+
+
ICAM-2 (CD102)
+
+
+
ICAM-3 (CD50)
+
-
-
LFA-1 (CD11a/CD18)
+
+
-
LFA-3 (CD58)
+
+
+
B7-1 (CD80)
+
+
+
B7-2 (CD86)
+
+
+

a Proteins expressed on the surface of the donor cells were stained and analyzed by FACS. Isotype-matched mouse IgG controls were also examined. Cell population expression levels indicated as ++, +, and +/- demonstrated a mean fluorescence of antibody staining greater than 50, 10, and 7.5, respectively. No antibody and isotype control stainings typically displayed a mean fluorescence intensity of 5 in the FL-2 channel, using a Becton-Dickinson FACSCalibur instrument. ND, not done. Staining of parental Raji and K562 cells was uniformly negative for DC-SIGN and showed a similar expression pattern of these ligands (data not shown). b Immature monocyte-derived dendritic cells were stained at day 7 of culture in the presence of cytokines [5]. c HLA-DP and -DQ expression was also examined and results were similar to what is shown for HLA-DR.

Wu et al. Retrovirology 2004 1:14   doi:10.1186/1742-4690-1-14

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