Inflammatory Pathways Are Activated in VEXAS Hematopoietic Stem Cells

CLINICAL
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NIAMS IRP

Description

VEXAS (vacuoles, E1 enzyme, X-linked, autoinflammatory, somatic) syndrome is a severe autoinflammatory disease found in men and caused by mutations in the UBA1 gene, leading to severe inflammation affecting multiple organs. The pathophysiology of VEXAS is still not fully understood, but defective proliferation and differentiation of myeloid progenitors and hematopoietic stem and progenitor cells characterize the disease. In this study, the authors reported early activation of inflammatory pathways in UBA1-mutated hematopoietic stem and progenitor cells in VEXAS.

What is exciting about this article?

The researchers used single-cell transcriptomic analysis to study bone marrow from men with VEXAS syndrome and found both hyperinflammation and dominance of myeloid populations among the hematopoietic stem cells with UBA1 mutations.

Grant support

AR041204

Research Areas:
Autoimmunity Clinical Research Computational Biology Epidemiology Genetics and Genomics Immunology

Reference:

Early activation of inflammatory pathways in UBA1-mutated hematopoietic stem and progenitor cells in VEXAS.

Wu Z, Gao S, Gao Q, Patel BA, Groarke EM, Feng X, Manley AL, Li H, Ospina Cardona D, Kajigaya S, Alemu L, Quinones Raffo D, Ombrello AK, Ferrada MA, Grayson PC, Calvo KR, Kastner DL, Beck DB, Young NS
Cell Rep Med.
2023 Aug 15;
4(8).
doi: 10.1016/j.xcrm.2023.101160
PMID: 37586319

Research reported in this publication was supported by the Intramural Research Program of the NIHʼs National Institute of Arthritis and Musculoskeletal and Skin Diseases.

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