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December 8, 2025Blood

Dynamic roles of hematopoietic notch signaling in extramedullary hematopoiesis

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Transgenic mice show Notch pathway impacts treatment and function of hematopoietic stem cells in extramedullary hematopoiesis.

The study aims to investigate the role of hematopoietic Notch signaling in extramedullary hematopoiesis and the functional potential of HSCs in the adult liver.
Induced acute hemolytic anemia using phenylhydrazine in wild-type and Notch pathway transgenic mice
Analyzed egress and homing of hematopoietic progenitors to the liver and spleen
Conducted hematopoietic transplantations comparing various Notch donors
Long-term HSCs from the adult liver can reconstitute lethally irradiated mice
Notch mutant progenitors were less efficient in reconstituting irradiated recipients
Activation of hematopoietic Notch signaling is essential for the functional potential of EMH HSCs

Pajcini et al. (2025) studied this question.

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