Abstract:
:Vgamma9Vdelta2 T lymphocytes, a major gammadelta T lymphocyte subset in humans, display cytolytic activity against various tumor cells upon recognition of yet uncharacterized structures. Here, we show that an entity related to the mitochondrial F1-ATPase is expressed on tumor cell surface and promotes tumor recognition by Vgamma9Vdelta2 T cells. When immobilized, purified F1-ATPase induces selective activation of this lymphocyte subset. The Vgamma9Vdelta2 T cell receptors (TCR) and the F1-ATPase also bind a delipidated form of apolipoprotein A-I (apo A-I), as demonstrated by surface plasmon resonance. Moreover, the presence of apo A-I in the culture medium is required for optimal activation of Vgamma9Vdelta2 T cells by tumors expressing F1-ATPase. This study thus describes an unanticipated tumor recognition mechanism by Vgamma9Vdelta2 lymphocytes and a possible link between gammadelta T cell immunity and lipid metabolism.
journal_name
Immunityjournal_title
Immunityauthors
Scotet E,Martinez LO,Grant E,Barbaras R,Jenö P,Guiraud M,Monsarrat B,Saulquin X,Maillet S,Estève JP,Lopez F,Perret B,Collet X,Bonneville M,Champagne Edoi
10.1016/j.immuni.2004.11.012keywords:
subject
Has Abstractpub_date
2005-01-01 00:00:00pages
71-80issue
1eissn
1074-7613issn
1097-4180pii
S1074-7613(04)00374-7journal_volume
22pub_type
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