A20 and ABIN-1 cooperate in balancing CBM complex-triggered NF-κB signaling in activated T cells
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A20 and ABIN-1 cooperate in balancing CBM complex-triggered NF-κB signaling in activated T cells. / Yin, Hongli; Karayel, Ozge; Chao, Ying-Yin; Seeholzer, Thomas; Hamp, Isabel; Plettenburg, Oliver; Gehring, Torben; Zielinski, Christina; Mann, Matthias; Krappmann, Daniel.
In: Cellular and Molecular Life Sciences, Vol. 79, No. 2, 31.01.2022, p. 112.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - A20 and ABIN-1 cooperate in balancing CBM complex-triggered NF-κB signaling in activated T cells
AU - Yin, Hongli
AU - Karayel, Ozge
AU - Chao, Ying-Yin
AU - Seeholzer, Thomas
AU - Hamp, Isabel
AU - Plettenburg, Oliver
AU - Gehring, Torben
AU - Zielinski, Christina
AU - Mann, Matthias
AU - Krappmann, Daniel
N1 - © 2022. The Author(s).
PY - 2022/1/31
Y1 - 2022/1/31
N2 - T cell activation initiates protective adaptive immunity, but counterbalancing mechanisms are critical to prevent overshooting responses and to maintain immune homeostasis. The CARD11-BCL10-MALT1 (CBM) complex bridges T cell receptor engagement to NF-κB signaling and MALT1 protease activation. Here, we show that ABIN-1 is modulating the suppressive function of A20 in T cells. Using quantitative mass spectrometry, we identified ABIN-1 as an interactor of the CBM signalosome in activated T cells. A20 and ABIN-1 counteract inducible activation of human primary CD4 and Jurkat T cells. While A20 overexpression is able to silence CBM complex-triggered NF-κB and MALT1 protease activation independent of ABIN-1, the negative regulatory function of ABIN-1 depends on A20. The suppressive function of A20 in T cells relies on ubiquitin binding through the C-terminal zinc finger (ZnF)4/7 motifs, but does not involve the deubiquitinating activity of the OTU domain. Our mechanistic studies reveal that the A20/ABIN-1 module is recruited to the CBM complex via A20 ZnF4/7 and that proteasomal degradation of A20 and ABIN-1 releases the CBM complex from the negative impact of both regulators. Ubiquitin binding to A20 ZnF4/7 promotes destructive K48-polyubiquitination to itself and to ABIN-1. Further, after prolonged T cell stimulation, ABIN-1 antagonizes MALT1-catalyzed cleavage of re-synthesized A20 and thereby diminishes sustained CBM complex signaling. Taken together, interdependent post-translational mechanisms are tightly controlling expression and activity of the A20/ABIN-1 silencing module and the cooperative action of both negative regulators is critical to balance CBM complex signaling and T cell activation.
AB - T cell activation initiates protective adaptive immunity, but counterbalancing mechanisms are critical to prevent overshooting responses and to maintain immune homeostasis. The CARD11-BCL10-MALT1 (CBM) complex bridges T cell receptor engagement to NF-κB signaling and MALT1 protease activation. Here, we show that ABIN-1 is modulating the suppressive function of A20 in T cells. Using quantitative mass spectrometry, we identified ABIN-1 as an interactor of the CBM signalosome in activated T cells. A20 and ABIN-1 counteract inducible activation of human primary CD4 and Jurkat T cells. While A20 overexpression is able to silence CBM complex-triggered NF-κB and MALT1 protease activation independent of ABIN-1, the negative regulatory function of ABIN-1 depends on A20. The suppressive function of A20 in T cells relies on ubiquitin binding through the C-terminal zinc finger (ZnF)4/7 motifs, but does not involve the deubiquitinating activity of the OTU domain. Our mechanistic studies reveal that the A20/ABIN-1 module is recruited to the CBM complex via A20 ZnF4/7 and that proteasomal degradation of A20 and ABIN-1 releases the CBM complex from the negative impact of both regulators. Ubiquitin binding to A20 ZnF4/7 promotes destructive K48-polyubiquitination to itself and to ABIN-1. Further, after prolonged T cell stimulation, ABIN-1 antagonizes MALT1-catalyzed cleavage of re-synthesized A20 and thereby diminishes sustained CBM complex signaling. Taken together, interdependent post-translational mechanisms are tightly controlling expression and activity of the A20/ABIN-1 silencing module and the cooperative action of both negative regulators is critical to balance CBM complex signaling and T cell activation.
KW - B-Cell CLL-Lymphoma 10 Protein/metabolism
KW - CARD Signaling Adaptor Proteins/metabolism
KW - Cells, Cultured
KW - DNA-Binding Proteins/physiology
KW - Guanylate Cyclase/metabolism
KW - HEK293 Cells
KW - Humans
KW - Jurkat Cells
KW - Lymphocyte Activation/genetics
KW - Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 Protein/metabolism
KW - Multiprotein Complexes/metabolism
KW - NF-kappa B/metabolism
KW - Protein Binding
KW - RNA Interference/immunology
KW - Signal Transduction/physiology
KW - T-Lymphocytes/immunology
KW - Tumor Necrosis Factor alpha-Induced Protein 3/physiology
U2 - 10.1007/s00018-022-04154-z
DO - 10.1007/s00018-022-04154-z
M3 - Journal article
C2 - 35099607
VL - 79
SP - 112
JO - Cellular and Molecular Life Sciences
JF - Cellular and Molecular Life Sciences
SN - 1420-682X
IS - 2
ER -
ID: 303114070