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2014 ; 32
(3
): 822-7
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Brief report: Dclk1 deletion in tuft cells results in impaired epithelial repair
after radiation injury
#MMPMID24123696
May R
; Qu D
; Weygant N
; Chandrakesan P
; Ali N
; Lightfoot SA
; Li L
; Sureban SM
; Houchen CW
Stem Cells
2014[Mar]; 32
(3
): 822-7
PMID24123696
show ga
The role of Dclk1(+) tuft cells in the replacement of intestinal epithelia and
reestablishing the epithelial barrier after severe genotoxic insult is completely
unknown. Successful restoration requires precise coordination between the cells
within each crypt subunit. While the mechanisms that control this response remain
largely uncertain, the radiation model remains an exceptional surrogate for stem
cell-associated crypt loss. Following the creation of
Dclk1-intestinal-epithelial-deficient Villin-Cre;Dclk1(flox/flox) mice,
widespread gene expression changes were detected in isolated intestinal epithelia
during homeostasis. While the number of surviving crypts was unaffected,
Villin-Cre;Dclk1(flox/flox) mice failed to maintain tight junctions and died at
approximately 5 days, where Dclk1(flox/flox) mice lived until day 10 following
radiation injury. These findings suggest that Dclk1 plays a functional role
critical in the epithelial restorative response.