Expression of bcl-X(L) restores cell survival, but not proliferation off effector differentiation, in CD28-deficient T lymphocytes.
Expression of bcl-X(L) restores cell survival, but not proliferation off effector differentiation, in CD28-deficient T lymphocytes.
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DOI:
10.1084/jem.191.12.2031
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发表时间:
2000-06-19
期刊:
影响因子:
--
通讯作者:
Abbas AK
中科院分区:
文献类型:
--
作者:
Dahl AM;Klein C;Andres PG;London CA;Lodge MP;Mulligan RC;Abbas AK
Lymphocytes deficient in the T cell costimulatory molecule CD28 exhibit defects in cell survival, clonal expansion, and differentiation into effector cells. It is known that CD28-mediated signaling results in the upregulation of the Bcl family member Bcl-XL. To investigate the role that Bcl-XL plays in the various functions of CD28, we expressed Bcl-XL in CD28-deficient primary T lymphocytes using retrovirus-mediated gene transfer. T cells were activated in vitro and infected with Bcl-XL or control retroviruses; this method allows gene expression in activated, cycling cells. Expression of Bcl-XL in naive T cells was achieved by reconstitution of the immune system of lethally irradiated recipient mice with retrovirus-infected purified bone marrow stem cells from CD28−/− or wild-type donor mice. Our studies demonstrate that Bcl-XL prolongs the survival of CD28−/− T cells but does not restore normal proliferation or effector cell development. These results indicate that the various functions of CD28 can be dissociated, and provide an experimental approach for testing the roles of downstream signals in the functions of cellular receptors such as CD28.
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影响因子:
32.4
作者:
Bird, JJ;Brown, DR;Reiner, SL
通讯作者:
Reiner, SL
影响因子:
32.4
作者:
Ouyang, W;Ranganath, SH;Murphy, KM
通讯作者:
Murphy, KM
DOI:
10.1084/jem.176.4.1149
发表时间:
1992-10-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Hawley RG;Fong AZ;Burns BF;Hawley TS
通讯作者:
Hawley TS
DOI:
10.1084/jem.182.3.821
发表时间:
1995-09-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Chao DT;Linette GP;Boise LH;White LS;Thompson CB;Korsmeyer SJ
通讯作者:
Korsmeyer SJ
DOI:
10.1016/s0167-5699(97)01005-0
发表时间:
1997-03-01
期刊:
IMMUNOLOGY TODAY
影响因子:
--
作者:
Gause, WC;Halvorson, MJ;Finkelman, FD
通讯作者:
Finkelman, FD