Direct stimulation of ADCC by cloned gamma interferon is not ablated by glucocorticoids: studies using a human monocyte-like cell line (U-937).
Direct stimulation of ADCC by cloned gamma interferon is not ablated by glucocorticoids: studies using a human monocyte-like cell line (U-937).
复制标题
克隆γ干扰素对 ADCC 的直接刺激不会被糖皮质激素消除:使用人单核细胞样细胞系 (U-937) 进行的研究。
DOI:
10.1016/0161-5890(84)90132-9
复制
发表时间:
1984
影响因子:
3.6
通讯作者:
Fanger,MW
中科院分区:
文献类型:
--
作者:
Shen,L;Guyre,PM;Fanger,MW
We have used the macrophage-like cell line U-937 to demonstrate that recombinant gamma (immune) interferon (γ-IFN) acts directly on the mononuclear phagocyte in the absence of other cell types to increase Fc receptor sites and antibody-dependent cellular cytotoxicity (ADCC). Incubation of U-937 for 18hr with 2% γ-IFN-rich supernatant, or with 10 U/ml of pure recombinant γ-IFN, resulted in a seven-fold increase in Fc receptors as measured by the binding of radiolabeled IgG or fluoresceinated IgG and cytofluorography. Simultaneous measurement of ADCC for chick erythrocytes showed a seven-fold increase. This augmentation of Fc receptors and function was not ablated by an immunosuppressive concn of the glucocorticoid dexamethasone. The potent effects of γ-IFN both on surface receptors and effector functions of macrophages suggest that it is an important mediator in the efferent limb of immunity. Moreover, our findings that physiologic levels of glucocorticoids do not block activation of the mononuclear phagocyte support our view that glucocorticoids are immunosuppressive as a result of their action on γ-IFN-producing cells. This would seem an important consideration in the development of potential strategies for obviating steroid-induced immunosuppression.
登录
查看更多内容
影响因子:
4.4
作者:
G. Crabtree
通讯作者:
G. Crabtree
影响因子:
15.3
作者:
Hamburg, S I;Manejias, R E;Rabinovitch, M
通讯作者:
Rabinovitch, M
DOI:
10.4049/jimmunol.123.4.1632
发表时间:
1979
期刊:
The Journal of Immunology
影响因子:
--
作者:
S. Gillis;G. Crabtree;Kendall A. Smith
通讯作者:
Kendall A. Smith
DOI:
10.1073/pnas.78.1.519
发表时间:
1981
影响因子:
11.1
作者:
J. A. Titus;S. Sharrow;J. Connolly;D. Segal
通讯作者:
D. Segal
影响因子:
64.8
作者:
MORRIS, AG;LIN, YL;ASKONAS, BA
通讯作者:
ASKONAS, BA