Cytolytic properties and replicative history of peripheral blood pE CD8+ T lymphocytes
. | N RA+CCR7+ 27+28+ . | pE1 RA+CCR7- 27+28+ . | pE2 RA+CCR7- 27+28- . | E RA+CCR7- 27-28- . |
---|---|---|---|---|
Fas/CD95*, % | 5 | 78 | 66‡ | 72 |
Granzyme B*, % | 1 | 25 | 49‡ | 93 |
Perforin*, % | 0 | 23 | 41‡ | 95 |
Cytolysis 51Cr, % | < 3§ | 12 | 12 | 100 |
IFN-γ/TNF-α | - | + | + | + |
NKR/CD94 | - | +/- | ++ | +++ |
TRECs† | 13 | 2 | 1.5 | ND |
Telomere length, kb | 7 | 10 | 10 | 5.5 |
. | N RA+CCR7+ 27+28+ . | pE1 RA+CCR7- 27+28+ . | pE2 RA+CCR7- 27+28- . | E RA+CCR7- 27-28- . |
---|---|---|---|---|
Fas/CD95*, % | 5 | 78 | 66‡ | 72 |
Granzyme B*, % | 1 | 25 | 49‡ | 93 |
Perforin*, % | 0 | 23 | 41‡ | 95 |
Cytolysis 51Cr, % | < 3§ | 12 | 12 | 100 |
IFN-γ/TNF-α | - | + | + | + |
NKR/CD94 | - | +/- | ++ | +++ |
TRECs† | 13 | 2 | 1.5 | ND |
Telomere length, kb | 7 | 10 | 10 | 5.5 |
NKR indicates NK cell receptor; ND, not detectable; and kb, kilobase.
Percentage of positive cells by FACS analysis (mean percent of analysis performed in 5 healthy individuals).
Mean numbers of TRECs per 100 cells from 4 healthy individuals (Figure 6A).
Expression of Fas, granzyme B, and perforin in pE2 T cells was calculated based on the proportion of pE2 T cells in the total pE population.
Comparison of the lytic activity found in N, pE1, and pE2 subsets with that found in the E subset (Figure 4C).