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Learn MoreZinc finger protein 521 (ZFP521), a DNA-binding protein containing 30 Krppel-like zinc fingers, has been implicated in the differentiation of multiple cell types, including hematopoietic stem and progenitor cells (HSPC) and B lymphocytes. Here, we report a novel role for ZFP521 in regulating the earliest stages of hematopoiesis and lymphoid cell development through soluble microenvironmental proteins. Mice with inactivated Zfp521 genes (Zfp521-/-) possess reduced frequencies and numbers of hematopoietic stem and progenitor cells, common lymphoid progenitors, and B and T cell precursors. Notably, ZFP521 deficiency changes BM microenvironment cytokine levels and gene expression within resident HSPC, consistent with a skewing of hematopoiesis away from lymphopoiesis and towards granulopoiesis. These results advance our understanding of ZFP521s role in normal hematopoiesis, justifying further research to assess its potential as a target for cancer therapies. SOURCE: James,R,Hagman (hagmanj@njhealth.org) - Hagman National Jewish Health
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