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Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance

ABSTRACT: Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance

PROVIDER: PRJNA644400 | ENA |

REPOSITORIES: ENA

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Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance

Project description:Here we describe patients with an autosomal recessive form of HIES due to loss-of-function mutations of a previously uncharacterized gene, ZNF341.

2021-06-12 | GSE153886 | GEO

Human STAT3 variants underlie autosomal dominant hyper-IgE syndrome by negative dominance.

Project description:Most patients with autosomal dominant hyper-IgE syndrome (AD-HIES) carry rare heterozygous STAT3 variants. Only six of the 135 in-frame variants reported have been experimentally shown to be dominant negative (DN), and it has been recently suggested that eight out-of-frame variants operate by haploinsufficiency. We experimentally tested these 143 variants, 7 novel out-of-frame variants found in HIES patients, and other STAT3 variants from the general population. Strikingly, all 15 out-of-frame variants were DN via their encoded (1) truncated proteins, (2) neoproteins generated from a translation reinitiation codon, and (3) isoforms from alternative transcripts or a combination thereof. Moreover, 128 of the 135 in-frame variants (95%) were also DN. The patients carrying the seven non-DN STAT3 in-frame variants have not been studied for other genetic etiologies. Finally, none of the variants from the general population tested, including an out-of-frame variant, were DN. Overall, our findings show that heterozygous STAT3 variants, whether in or out of frame, underlie AD-HIES through negative dominance rather than haploinsufficiency.

| S-EPMC8217968 | biostudies-literature

Gene expression analysis in endothelial cells derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

Project description:Autosomal-dominant hyper-IgE syndrome (AD-HIES, Job’s syndrome) is a primary immunodeficiency caused by loss of function mutations in signal transducer and activator of transcription 3 (STAT3), a critical regulator of diverse cellular processes. In addition to immunological deficits, patients experience severe non-immunological features including skeletal, connective tissue and vascular abnormalities, poor post-infection healing, and subsequent pulmonary failure. The underlying mechanisms of these STAT3-dependent non-immunological features are not understood, preventing the development of targeted treatments. In this study, global gene expression was analysed in the patients umbilical vein endothelial cells in order to identify signaling pathway affected by the disease-causing STAT3 mutations with ultimate goal to better understand the disease mechanism and identify promising therapeutic targets.

2020-08-12 | GSE139188 | GEO

Analysis of gene expression in skin fibroblasts derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

Project description:Autosomal-dominant hyper-IgE syndrome (AD-HIES, Job’s syndrome) is a primary immunodeficiency caused by loss of function mutations in signal transducer and activator of transcription 3 (STAT3), a critical regulator of diverse cellular processes. In addition to immunological deficits, patients experience severe non-immunological features including skeletal, connective tissue and vascular abnormalities, poor post-infection healing, and subsequent pulmonary failure. The underlying mechanisms of these STAT3-dependent non-immunological features are not understood, preventing the development of targeted treatments. In this study, global gene expression was analysed in the patients skin fibroblasts in order to identify signaling pathway affected by the disease-causing STAT3 mutations with ultimate goal to better understand the disease mechanism and identify promising therapeutic targets.

2020-08-12 | GSE139202 | GEO

A deep intronic splice mutation of STAT3 underlies hyper IgE syndrome by negative dominance

Project description:A deep intronic splice mutation of STAT3 underlies hyper IgE syndrome by negative dominance

| PRJNA629339 | ENA

Gene expression analysis in endothelial cells derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

Project description:Gene expression analysis in endothelial cells derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

| PRJNA578735 | ENA

Gene expression analysis in primary cells derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

Project description:Gene expression analysis in primary cells derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

| PRJNA579379 | ENA

Analysis of gene expression in skin fibroblasts derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

Project description:Analysis of gene expression in skin fibroblasts derived from patients with Autosomal-dominant hyper-IgE syndrome (AD-HIES)

| PRJNA578738 | ENA

A deep intronic splice mutation of STAT3 underlies hyper IgE syndrome by negative dominance

Project description:Heterozygous in-frame mutations in coding regions of human STAT3 underlie the only known autosomal dominant form of hy- per IgE syndrome (AD HIES). About 5% of familial cases remain unexplained. The mutant proteins are loss-of-function and dominant-negative when tested following overproduction in re- cipient cells. However, the production of mutant proteins has not been detected and quantified in the cells of heterozygous pa- tients. We report a deep intronic heterozygous STAT3 mutation, c.1282-89C>T, in 7 relatives with AD HIES. This mutation creates a new exon in the STAT3 complementary DNA, which, when over- expressed, generates a mutant STAT3 protein (D427ins17) that is loss-of-function and dominant-negative in terms of tyrosine phos- phorylation, DNA binding, and transcriptional activity. In immor- talized B cells from these patients, the D427ins17 protein was 2 kDa larger and 4-fold less abundant than wild-type STAT3, on mass spectrometry. The patients’ primary B and T lymphocytes responded poorly to STAT3-dependent cytokines. These findings are reminiscent of the impaired responses of leukocytes from other patients with AD HIES due to typical STAT3 coding muta- tions, providing further evidence for the dominance of the mutant intronic allele. These findings highlight the importance of sequenc- ing STAT3 introns in patients with HIES without candidate variants in coding regions and essential splice sites. They also show that AD HIES-causing STAT3 mutant alleles can be dominant-negative even if the encoded protein is produced in significantly smaller amounts than wild-type STAT3.

2020-04-30 | GSE149602 | GEO

A recessive form of hyper-IgE syndrome by disruption of ZNF341-dependent STAT3 transcription and activity

Project description:Heterozygosity for human STAT3 dominant-negative (DN) mutations underlies an autosomal dominant form of hyper-IgE syndrome (HIES). We describe patients with an autosomal recessive form of HIES due to loss-of-function mutations of a previously uncharacterized gene, ZNF341. ZNF341 is a transcription factor that resides in the nucleus, where it binds a specific DNA motif present in various genes, including, most notably the STAT3 promoter. The patients’ cells have low basal levels of STAT3 mRNA and protein. The auto-induction of STAT3 production, activation, and function by STAT3-activating cytokines is particularly strongly impaired. Like patients with STAT3 DN mutations, ZNF341-deficient patients lack Th17 cells, have an excess of Th2 cells, and low memory B cells, due to the tight dependence of STAT3 activity on ZNF341 in lymphocytes. Their milder extra-hematopoietic manifestations and stronger inflammatory responses reflect the lower ZNF341-dependence of STAT3 activity in other cell types. Human ZNF341 is essential for the STAT3 transcription-dependent auto-induction and sustained activity of STAT3.

2018-05-30 | GSE113194 | GEO

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