Brief Report: Dclk1 Deletion in Tuft Cells Results in Impaired Epithelial Repair After Radiation Injury. (19th February 2014)

• Record Type: Journal Article
• Authors: May, Randal; Qu, Dongfeng; Weygant, Nathaniel; Chandrakesan, Parthasarathy; Ali, Naushad; Lightfoot, Stanley A.; Li, Linheng; Sureban, Sripathi M.; Houchen, Courtney W.
• Is Part Of: Stem cells. Volume 32:Number 3(2014:Mar.)
• Page Start: 822
• Page End: 827
• Publication Date: 2014-02-19
• Subjects: Irradiation -- Tissue-specific stem cells -- Notch -- Tissue regeneration -- Stem cell-microenvironment interactions -- Conditional knockout -- Cre-loxP system; Cloning -- Periodicals; Clone cells -- Periodicals; Stem cells -- Periodicals; Cell Differentiation -- Periodicals; Cell Division -- Periodicals; Clone Cells -- Periodicals; Hematopoietic Stem Cells -- Periodicals; Stem Cells -- Periodicals; 571.84
• DOI: 10.1002/stem.1566
• Languages: English
• ISSNs: 1066-5099

Abstract

Abstract: 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. Stem Cells 2014;32:822–827