Abstract:
:Intestinal crypts have great capacity for repair and regeneration after intestinal stem cell (ISC) injury. Here, we define the cellular remodeling process resulting from ISC niche interruption by transient Notch pathway inhibition in adult mice. Although ISCs were retained, lineage tracing demonstrated a marked reduction in ISC function after Notch disruption. Surprisingly, Notch ligand-expressing Paneth cells were rapidly lost by apoptotic cell death. The ISC-Paneth cell changes were followed by a regenerative response, characterized by expansion of cells expressing Notch ligands Dll1 and Dll4, enhanced Notch signaling, and a proliferative surge. Lineage tracing and organoid studies showed that Dll1-expressing cells were activated to function as multipotential progenitors, generating both absorptive and secretory cells and replenishing the vacant Paneth cell pool. Our analysis uncovered a dynamic, multicellular remodeling response to acute Notch inhibition to repair the niche and restore homeostasis. Notably, this crypt regenerative response did not require ISC loss.
journal_name
Stem Cell Reportsjournal_title
Stem cell reportsauthors
Bohin N,Keeley TM,Carulli AJ,Walker EM,Carlson EA,Gao J,Aifantis I,Siebel CW,Rajala MW,Myers MG Jr,Jones JC,Brindley CD,Dempsey PJ,Samuelson LCdoi
10.1016/j.stemcr.2020.05.010subject
Has Abstractpub_date
2020-07-14 00:00:00pages
156-170issue
1issn
2213-6711pii
S2213-6711(20)30182-Xjournal_volume
15pub_type
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
pub_type: 杂志文章
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journal_title:Stem cell reports
pub_type: 杂志文章
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journal_title:Stem cell reports
pub_type: 杂志文章
doi:10.1016/j.stemcr.2017.04.023
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pub_type: 信件
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pub_type: 杂志文章
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journal_title:Stem cell reports
pub_type: 杂志文章
doi:10.1016/j.stemcr.2017.05.023
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journal_title:Stem cell reports
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