Article: Human TBK1 deficiency leads to autoinflammation driven by TNF-induced cell death
Elsevier Inc. Cell. 2021 Aug. 19, v. 184, no. 17
2021
Abstract: TANK binding kinase 1 (TBK1) regulates IFN-I, NF-κB, and TNF-induced RIPK1-dependent cell death (RCD). In mice, biallelic loss of TBK1 is embryonically lethal. We discovered four humans, ages 32, 26, 7, and 8 from three unrelated consanguineous families ... ...
Abstract | TANK binding kinase 1 (TBK1) regulates IFN-I, NF-κB, and TNF-induced RIPK1-dependent cell death (RCD). In mice, biallelic loss of TBK1 is embryonically lethal. We discovered four humans, ages 32, 26, 7, and 8 from three unrelated consanguineous families with homozygous loss-of-function mutations in TBK1. All four patients suffer from chronic and systemic autoinflammation, but not severe viral infections. We demonstrate that TBK1 loss results in hypomorphic but sufficient IFN-I induction via RIG-I/MDA5, while the system retains near intact IL-6 induction through NF-κB. Autoinflammation is driven by TNF-induced RCD as patient-derived fibroblasts experienced higher rates of necroptosis in vitro, and CC3 was elevated in peripheral blood ex vivo. Treatment with anti-TNF dampened the baseline circulating inflammatory profile and ameliorated the clinical condition in vivo. These findings highlight the plasticity of the IFN-I response and underscore a cardinal role for TBK1 in the regulation of RCD. |
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Keywords | blood ; fibroblasts ; homozygosity ; humans ; interleukin-6 ; loss-of-function mutation ; necroptosis ; plasticity |
Language | English |
Dates of publication | 2021-0819 |
Size | p. 4447-4463.e20. |
Publishing place | Elsevier Inc. |
Document type | Article |
ZDB-ID | 187009-9 |
ISSN | 1097-4172 ; 0092-8674 |
ISSN (online) | 1097-4172 |
ISSN | 0092-8674 |
DOI | 10.1016/j.cell.2021.07.026 |
Database | NAL-Catalogue (AGRICOLA) |
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