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Deprecated: Implicit conversion from float 269.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2015 ; 5 (ä): ä Nephropedia Template TP
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The transcription factor NR4A1 is essential for the development of a novel macrophage subset in the thymus #MMPMID26091486
Tacke R; Hilgendorf I; Garner H; Waterborg C; Park K; Nowyhed H; Hanna RN; Wu R; Swirski FK; Geissmann F; Hedrick CC
Sci Rep 2015[]; 5 (ä): ä PMID26091486show ga
Tissue macrophages function to maintain homeostasis and regulate immune responses. While tissue macrophages derive from one of a small number of progenitor programs, the transcriptional requirements for site-specific macrophage subset development are more complex. We have identified a new tissue macrophage subset in the thymus and have discovered that its development is dependent on transcription factor NR4A1. Functionally, we find that NR4A1-dependent macrophages are critically important for clearance of apoptotic thymocytes. These macrophages are largely reduced or absent in mice lacking NR4A1, and Nr4a1-deficient mice have impaired thymocyte engulfment and clearance. Thus, NR4A1 functions as a master transcription factor for the development of this novel thymus-specific macrophage subset.