Ruxolitinib Improves Immune-Dysregulation Features but not Epigenetic Abnormality in a Patient with STAT1 GOF

© 2024. The Author(s)..

PURPOSE: Patients with STAT1 gain-of-function (GOF) mutations often exhibit autoimmune features. The JAK1/2 inhibitor ruxolitinib can be administered to alleviate autoimmune symptoms; however, it is unclear how immune cells are molecularly changed by ruxolitinib treatment. Then, we aimed to investigate the trnscriptional and epigenetic status of immune cells before and after ruxolitinib treatment in a patient with STAT1 GOF.

METHODS: A patient with a heterozygous STAT1 GOF variant (p.Ala267Val), exhibiting autoimmune features, was treated with ruxolitinib, and peripheral blood mononuclear cells (PBMCs) were longitudinally collected. PBMCs were transcriptionally analyzed by single-cell cellular indexing of the transcriptomes and epitopes by sequencing (CITE-seq), and epigenetically analyzed by assay of transposase-accessible chromatin sequencing (ATAC-seq).

RESULTS: CITE-seq analysis revealed that before treatment, the patient's PBMCs exhibited aberrantly activated inflammatory features, especially IFN-related features. In particular, monocytes showed high expression levels of a subset of IFN-stimulated genes (ISGs). Ruxolitinib treatment substantially downregulated aberrantly overexpressed ISGs, and improved autoimmune features. However, epigenetic analysis demonstrated that genetic regions of ISGs-e.g., STAT1, IRF1, MX1, and OAS1-were highly accessible even after ruxolitinib treatment. When ruxolitinib was temporarily discontinued, the patient's autoimmune features were aggravated, which is in line with sustained epigenetic abnormality.

CONCLUSIONS: In a patient with STAT1 GOF, ruxolitinib treatment improved autoimmune features and downregulated aberrantly overexpressed ISGs, but did not correct epigenetic abnormality of ISGs.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:44

Enthalten in:

Journal of clinical immunology - 44(2024), 4 vom: 05. Apr., Seite 84

Sprache:

Englisch

Beteiligte Personen:

Koh, June-Young [VerfasserIn]
Kim, Doo Ri [VerfasserIn]
Son, Sohee [VerfasserIn]
Park, Hwanhee [VerfasserIn]
Kim, Kyung-Ran [VerfasserIn]
Min, Sunwoo [VerfasserIn]
Lee, Ha Seok [VerfasserIn]
Jhun, Byung Woo [VerfasserIn]
Kang, Eun-Suk [VerfasserIn]
Jung, Inkyung [VerfasserIn]
Kang, Ji-Man [VerfasserIn]
Kim, Yae-Jean [VerfasserIn]
Shin, Eui-Cheol [VerfasserIn]

Links:

Volltext

Themen:

82S8X8XX8H
ATAC sequencing
Inborn errors of immunity
JAK inhibitor
Journal Article
Nitriles
Pyrazoles
Pyrimidines
Ruxolitinib
STAT1 GOF
STAT1 Transcription Factor
STAT1 protein, human

Anmerkungen:

Date Completed 08.04.2024

Date Revised 09.04.2024

published: Electronic

Citation Status MEDLINE

doi:

10.1007/s10875-024-01687-9

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370677323