May 7, 2026 · Blood · DOI: 10.1182/blood.2025031836

Bone Marrow Stem Cell Connexins: Misconceptions and New Insights

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This review explores the role of connexins, particularly Connexin-43 (Cx43), in hematopoietic stem and progenitor cell (HSPC) regulation during stress hematopoiesis and bone marrow microenvironment remodeling. The authors aim to clarify misconceptions about connexins by highlighting their multifaceted functions beyond gap junctions, including their impact on metabolic coupling and regenerative signaling, and propose targeted therapeutic strategies to enhance hematopoietic recovery and address hematologic malignancies.

Abhishek K Singh, Kathrine S Rallis, Jose A Cancelas

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