TABLE 4.
T-cell line | Level (pg/ml) of the indicated cytokine produced with:
|
|||||||
---|---|---|---|---|---|---|---|---|
rAg85A
|
rAg85B
|
rAg85C
|
MIM
|
|||||
IFN-γ | IL-4 | IFN-γ | IL-4 | IFN-γ | IL-4 | IFN-γ | IL-4 | |
Mtb.186 | 11 | <5 | 27 | 6 | 831 | 13 | 101 | <5 |
Mtb.144 | 169 | <5 | 73 | <5 | ND | ND | 129 | <5 |
Mtb.149 | 1,178 | <1 | 746 | <5 | ND | ND | 420 | <5 |
Mtb.173 | 300 | <5 | 270 | <1 | 400 | <1 | 500 | <5 |
Mtb.183 | 250 | <5 | 300 | <5 | 300 | <5 | 501 | <5 |
Mtb.184 | 41 | <5 | 20 | <5 | 129 | <5 | 319 | <5 |
Mtb.191 | 34 | <5 | 82 | <5 | 30 | <5 | 65 | 11 |
Mtb.193 | <10 | <5 | 22 | <5 | 141 | <5 | 82 | <5 |
Mtb.94 | <10 | 55 | ND | ND | ND | ND | 19 | 50 |
Resting T cells from Mycobacterium-specific T-cell lines were cultured with MIM or with autologous macrophages pulsed with 15 μg of rAg85A, rAg85B, rAg85C, or no antigen. Supernatants were harvested from triplicate cultures at 24 h (IL-4) and 72 h (IFN-γ) and tested by an ELISA. Results are expressed as levels of cytokines from stimulated cultures minus unstimulated cultures. ND, not determined.