Intestinal crypts reproducibly expand in culture.

The Journal of Surgical Research
Megan K FullerMichael A Helmrath

Abstract

In vitro growth techniques for intestinal crypts and single intestinal stem cells have been recently described, but several questions of translational importance remain unaddressed. The purpose of this study was to first, evaluate if intestinal crypts reproducibly expand in vitro; second, determine the impact of age and region of intestine on crypt growth in vitro; and third, determine the effects of cryopreservation on crypt growth in vitro. Crypts were harvested from 5 cm of proximal, middle, and distal small intestine of C57BL/6J mice aged 4 wk, 6-8 wk, 12-14 wk, and 18-20 wk (n = 4-6 animals) and cultured. For each region, we determined the efficiency of crypts forming enterospheres (day 1) and progressing to enteroids (day 7). Subsequently, enteroids were passaged and cryopreserved to determine if growth was changed by these manipulations. Forty-three to 99% of intestinal crypts formed enterospheres, with higher efficiency in proximal small intestine and in younger mice. Twenty-five to 64% of enterospheres progressed to budding enteroids within 7 d. In vitro expansion was greater in proximal enteroids. This expansion continued in a logarithmic fashion, with ≈ 97% replating efficiency of isolated enteroid crypt buds. Follow...Continue Reading

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Citations

Mar 28, 2013·Digestive Diseases and Sciences·Stacy R Finkbeiner, Jason R Spence
Jul 4, 2013·Cell and Tissue Research·Megan K FullerSusan J Henning
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