A NIK–SIX signalling axis controls inflammation by targeted silencing of non-canonical NF-κB

Zixu Liu, Katrina B. Mar, Natasha Wyndham Hanners, Sofya S. Perelman, Mohammed Kanchwala, Chao Xing, John W Schoggins, Neal M Alto

Research output: Contribution to journalLetter

Abstract

The non-canonical NF-κB signalling cascade is essential for lymphoid organogenesis, B cell maturation, osteoclast differentiation, and inflammation in mammals 1,2 ; dysfunction of this system is associated with human diseases, including immunological disorders and cancer 3–6 . Although expression of NF-κB-inducing kinase (NIK, also known as MAP3K14) is the rate-limiting step in non-canonical NF-κB pathway activation 2,7 , the mechanisms by which transcriptional responses are regulated remain largely unknown. Here we show that the sine oculis homeobox (SIX) homologue family transcription factors SIX1 and SIX2 are integral components of the non-canonical NF-κB signalling cascade. The developmentally silenced SIX proteins are reactivated in differentiated macrophages by NIK-mediated suppression of the ubiquitin proteasome pathway. Consequently, SIX1 and SIX2 target a subset of inflammatory gene promoters and directly inhibit the trans-activation function of the transcription factors RELA and RELB in a negative feedback circuit. In support of a physiologically pivotal role for SIX proteins in host immunity, a human SIX1 transgene suppressed inflammation and promoted the recovery of mice from endotoxic shock. In addition, SIX1 and SIX2 protected RAS/P53-driven non-small-cell lung carcinomas from inflammatory cell death induced by SMAC-mimetic chemotherapeutic agents (small-molecule activators of the non-canonical NF-κB pathway). Our findings identify a NIK–SIX signalling axis that fine-tunes inflammatory gene expression programs under both physiological and pathological conditions.

Original languageEnglish (US)
JournalNature
DOIs
StatePublished - Jan 1 2019

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Transcription Factors
Inflammation
Organogenesis
Homeobox Genes
Immune System Diseases
Osteoclasts
Proteasome Endopeptidase Complex
Septic Shock
Ubiquitin
Transgenes
Non-Small Cell Lung Carcinoma
Mammals
Immunity
Proteins
B-Lymphocytes
Cell Death
Phosphotransferases
Macrophages
Gene Expression
Genes

ASJC Scopus subject areas

  • General

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A NIK–SIX signalling axis controls inflammation by targeted silencing of non-canonical NF-κB. / Liu, Zixu; Mar, Katrina B.; Hanners, Natasha Wyndham; Perelman, Sofya S.; Kanchwala, Mohammed; Xing, Chao; Schoggins, John W; Alto, Neal M.

In: Nature, 01.01.2019.

Research output: Contribution to journalLetter

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abstract = "The non-canonical NF-κB signalling cascade is essential for lymphoid organogenesis, B cell maturation, osteoclast differentiation, and inflammation in mammals 1,2 ; dysfunction of this system is associated with human diseases, including immunological disorders and cancer 3–6 . Although expression of NF-κB-inducing kinase (NIK, also known as MAP3K14) is the rate-limiting step in non-canonical NF-κB pathway activation 2,7 , the mechanisms by which transcriptional responses are regulated remain largely unknown. Here we show that the sine oculis homeobox (SIX) homologue family transcription factors SIX1 and SIX2 are integral components of the non-canonical NF-κB signalling cascade. The developmentally silenced SIX proteins are reactivated in differentiated macrophages by NIK-mediated suppression of the ubiquitin proteasome pathway. Consequently, SIX1 and SIX2 target a subset of inflammatory gene promoters and directly inhibit the trans-activation function of the transcription factors RELA and RELB in a negative feedback circuit. In support of a physiologically pivotal role for SIX proteins in host immunity, a human SIX1 transgene suppressed inflammation and promoted the recovery of mice from endotoxic shock. In addition, SIX1 and SIX2 protected RAS/P53-driven non-small-cell lung carcinomas from inflammatory cell death induced by SMAC-mimetic chemotherapeutic agents (small-molecule activators of the non-canonical NF-κB pathway). Our findings identify a NIK–SIX signalling axis that fine-tunes inflammatory gene expression programs under both physiological and pathological conditions.",
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AU - Mar, Katrina B.

AU - Hanners, Natasha Wyndham

AU - Perelman, Sofya S.

AU - Kanchwala, Mohammed

AU - Xing, Chao

AU - Schoggins, John W

AU - Alto, Neal M

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