Downregulation of cell adhesion molecules LFA-3 and ICAM-1 in Epstein-Barr virus-positive Burkitt's lymphoma underlies tumor cell escape from virus-specific T cell surveillance.
Downregulation of cell adhesion molecules LFA-3 and ICAM-1 in Epstein-Barr virus-positive Burkitt's lymphoma underlies tumor cell escape from virus-specific T cell surveillance.
复制标题
Epstein-Barr病毒阳性伯基特淋巴瘤中细胞粘附分子LFA-3和ICAM-1的下调是肿瘤细胞从病毒特异性T细胞监测中逃脱而来的。
DOI:
10.1084/jem.167.6.1811
复制
发表时间:
1988-06-01
影响因子:
15.3
通讯作者:
RICKINSON, AB
中科院分区:
文献类型:
--
作者:
GREGORY, CD;MURRAY, RJ;EDWARDS, CF;RICKINSON, AB
Some EBV+ BL cell lines continue to grow as single cells on in vitro passage, show an unusually restricted expression of EBV-latent genes and retain a BL biopsy-like cell surface phenotype (group I/II lines); others change to growth in aggregates, show a broader pattern of virus latent gene expression, and develop a cell surface phenotype more characteristic of EBV-transformed LCL (group III lines). Here we show that the cell surface adhesion molecules LFA-1, ICAM-1, and LFA-3 are expressed at very low levels, if at all, on group I/II lines and are coordinately upregulated as BL lines move towards group III. The change to growth in aggregates reflects the increasing availability of LFA-1 and ICAM-1, the two ligands whose mutual interaction underlies homotypic BL cell adhesion in vitro. The low levels of ICAM-1 and LFA-3 on group I/II BL cell lines are also associated with an impaired ability to interact with EBV-specific CTL in the antigen-independent phase of effector/target conjugation. mAb blocking studies show that the small number of conjugates that are formed with group I/II BL targets involve the LFA-1/ICAM-1 adhesion pathway but not the LFA-3 pathway; in contrast, both pathways contribute to the efficient conjugate formation shown by group III BL or LCL targets. Earlier work identified one group III line, WW1 BL, as unusual since is expressed the full spectrum of EBV-latent proteins yet remained insensitive to lysis by EBV-specific CTL. Here we show that this line has an anomalous pattern of adhesion molecule expression with high levels of LFA-1 and ICAM-1 in the absence of detectable LFA-3. The WW1 BL cells form conjugates with EBV-specific CTL through the LFA-1/ICAM-1 pathway, but in the absence of a target LFA-3/effector CD2 interaction these conjugates do not achieve target cell lysis. This may reflect an important role for target LFA-3 molecules in activating EBV-specific CTL function. From these in vitro studies, we postulate that downregulation of the adhesion molecules LFA-3 and ICAM-1 on EBV+ BL underlies the ability of the malignant clone to evade EBV-specific T cell surveillance in vivo.
登录
查看更多内容
影响因子:
5.4
作者:
HILDRETH, JEK;GOTCH, FM;MCMICHAEL, AJ
通讯作者:
MCMICHAEL, AJ
影响因子:
5.4
作者:
MURRAY, RJ;YOUNG, LS;RICKINSON, AB
通讯作者:
RICKINSON, AB
DOI:
10.1073/pnas.79.23.7489
发表时间:
1982-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
SANCHEZMADRID, F;KRENSKY, AM;SPRINGER, TA
通讯作者:
SPRINGER, TA
影响因子:
64.5
作者:
BARNSTABLE, CJ;BODMER, WF;ZIEGLER, A
通讯作者:
ZIEGLER, A
影响因子:
11.4
作者:
ROWE, M;ROWE, DT;RICKINSON, AB
通讯作者:
RICKINSON, AB