Antibodies to Interleukin-2 Elicit Selective T Cell Subset Potentiation through Distinct Conformational Mechanisms.
Antibodies to Interleukin-2 Elicit Selective T Cell Subset Potentiation through Distinct Conformational Mechanisms.
复制标题
DOI:
10.1016/j.immuni.2015.04.015
复制
发表时间:
2015-05-19
期刊:
影响因子:
32.4
通讯作者:
Garcia, K. Christopher
中科院分区:
文献类型:
--
作者:
Spangler, Jamie B.;Tomala, Jakub;Luca, Vincent C.;Jude, Kevin M.;Dong, Shen;Ring, Aaron M.;Votavova, Petra;Pepper, Marion;Kovar, Marek;Garcia, K. Christopher
Interleukin-2 (IL-2) is a pleiotropic cytokine that regulates immune cell homeostasis, and has been used to treat a range of disorders such as cancer and autoimmune disease. IL-2 signals via interleukin-2 receptor-β (IL-2Rβ):IL-2Rγ heterodimers on cells expressing high (regulatory T cells, Treg) or low (effector cells) amounts of IL-2Rα (CD25). When complexed with IL-2, certain anti-cytokine antibodies preferentially stimulate expansion of Treg (JES6-1) or effector (S4B6) cells, offering a strategy for targeted disease therapy. We found that JES6-1 sterically blocked the IL-2:IL-2Rβ and IL-2:IL-2Rγ interactions, but also allosterically lowered the IL-2:IL-2Rα affinity through a ‘triggered exchange’ mechanism favoring IL-2Rαhi Treg cells, creating a positive feedback loop for IL-2Rαhi cell activation. Conversely, S4B6 sterically blocked the IL-2:IL-2Rα interaction, while also conformationally stabilizing the IL-2:IL-2Rβ interaction, thus stimulating all IL-2 responsive immune cells, particularly IL-2Rβhi effector cells. Our insights provide a molecular blueprint for engineering selectively potentiating therapeutic antibodies.
登录
查看更多内容
影响因子:
2.8
作者:
Rojas, Gertrudis;Pupo, Amaury;Sidhu, Sachdev
通讯作者:
Sidhu, Sachdev
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.0909384107
发表时间:
2010-02-02
影响因子:
11.1
作者:
Letourneau, Sven;van Leeuwen, Ester M. M.;Boyman, Onur
通讯作者:
Boyman, Onur
影响因子:
14.8
作者:
通讯作者:
--
影响因子:
17.1
作者:
Rosenberg SA
通讯作者:
Rosenberg SA