کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5658618 | 1407437 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In Vivo Imaging Reveals Existence of Crypt Fission and Fusion in Adult Mouse Intestine
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کلمات کلیدی
موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
بیماریهای گوارشی
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چکیده انگلیسی
The intestinal epithelium is a repetitive sheet of crypt and villus units with stem cells at the bottom of the crypts. During postnatal development, crypts multiply via fission, generating 2 daughter crypts from 1 parental crypt. In the adult intestine, crypt fission is observed at a low frequency. Using intravital microscopy in Lgr5EGFP-Ires-CreERT2 mice, we monitored individual crypt dynamics over multiple days with single-cell resolution. We discovered the existence of crypt fusion, an almost exact reverse phenomenon of crypt fission, in which 2 crypts fuse into 1 daughter crypt. Examining 819 crypts in 4 mice, we found that 3.5% ± 0.6% of all crypts were in the process of fission, whereas 4.1 ± 0.9% of all crypts were undergoing crypt fusion. As counteracting processes, crypt fission and fusion could regulate crypt numbers during the lifetime of a mouse. Identifying the mechanisms that regulate rates of crypt fission and fusion could provide insights into intestinal adaptation to altered environmental conditions and disease pathogenesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gastroenterology - Volume 153, Issue 3, September 2017, Pages 674-677.e3
Journal: Gastroenterology - Volume 153, Issue 3, September 2017, Pages 674-677.e3
نویسندگان
Lotte Bruens, Saskia I.J. Ellenbroek, Jacco van Rheenen, Hugo J. Snippert,