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2016 ; 45
(5
): 975-987
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English Wikipedia
Deleting an Nr4a1 Super-Enhancer Subdomain Ablates Ly6C(low) Monocytes while
Preserving Macrophage Gene Function
#MMPMID27814941
Thomas GD
; Hanna RN
; Vasudevan NT
; Hamers AA
; Romanoski CE
; McArdle S
; Ross KD
; Blatchley A
; Yoakum D
; Hamilton BA
; Mikulski Z
; Jain MK
; Glass CK
; Hedrick CC
Immunity
2016[Nov]; 45
(5
): 975-987
PMID27814941
show ga
Mononuclear phagocytes are a heterogeneous family that occupy all tissues and
assume numerous roles to support tissue function and systemic homeostasis. Our
ability to dissect the roles of individual subsets is limited by a lack of
technologies that ablate gene function within specific mononuclear phagocyte
sub-populations. Using Nr4a1-dependent Ly6C(low) monocytes, we present a
proof-of-principle approach that addresses these limitations. Combining ChIP-seq
and molecular approaches we identified a single, conserved, sub-domain within the
Nr4a1 enhancer that was essential for Ly6C(low) monocyte development. Mice
lacking this enhancer lacked Ly6C(low) monocytes but retained Nr4a1 gene
expression in macrophages during steady state and in response to LPS. Because
Nr4a1 regulates inflammatory gene expression and differentiation of Ly6C(low)
monocytes, decoupling these processes allows Ly6C(low) monocytes to be studied
independently.
|Animals
[MESH]
|Antigens, Ly/immunology
[MESH]
|Cell Differentiation/*immunology
[MESH]
|Cell Separation
[MESH]
|Chromatin Immunoprecipitation
[MESH]
|Macrophages/cytology/*immunology
[MESH]
|Melanoma, Experimental/*immunology
[MESH]
|Mice
[MESH]
|Mice, Inbred C57BL
[MESH]
|Mice, Knockout
[MESH]
|Monocytes/cytology/*immunology
[MESH]
|Nuclear Receptor Subfamily 4, Group A, Member 1/deficiency/*immunology
[MESH]