Nuclear Receptor Nur77 Orchestrates Hematopoietic Lineage Commitment to Avert Anemia in Diabetes.

Nur77 loss in hematopoietic stem and progenitor cells is linked to diabetic anemia, and restoring Nur77 with cytosporone B prevents anemia in diabetic mice.

• Why it matters: Diabetic anemia is common but its molecular drivers are unclear, limiting targeted prevention or treatment.
• What they did: Nur77 expression was downregulated in HSPCs from diabetic patients with anemia; in multiple diabetic mouse models, Nur77 knockout induced anemia, recapitulated by bone marrow transplantation, and Nur77 acted as a transcriptional repressor affecting chromatin accessibility and myeloid differentiation.
• The result: Pharmacological Nur77 upregulation with cytosporone B effectively prevented anemia in diabetic mice, and Nur77 levels in patient HSPCs negatively correlated with anemia occurrence.

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