期刊
SCIENCE SIGNALING
卷 2, 期 76, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/scisignal.276pe38
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Activation of T lymphocytes relies on the simultaneous delivery of signals from the T cell receptor and co-receptors such as CD28. The absence of co-receptor signaling leads to a state of unresponsiveness called anergy, which prevents T cells from reacting against self antigens. The biochemical program that ensures the induction of anergy uses several mechanisms, including the synthesis of ubiquitin E3 ligases such as Cbl-b (Casitas B-lineage lymphoma). Because these E3 ligases function as gatekeepers to prevent the undesired activation of T cells, full and productive induction of the T cell response requires the restriction of these negative regulators by mechanisms that we are beginning to understand.
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