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In Vitro Models of the Small Intestine: Engineering Challenges and Engineering Solutions.
Tissue Engineering, Part B: Reviews ( IF 5.1 ) Pub Date : 2020-08-17 , DOI: 10.1089/ten.teb.2019.0334 Sarah A Hewes 1 , Reid L Wilson 1, 2 , Mary K Estes 2 , Noah F Shroyer 2 , Sarah E Blutt 2 , K Jane Grande-Allen 1
Tissue Engineering, Part B: Reviews ( IF 5.1 ) Pub Date : 2020-08-17 , DOI: 10.1089/ten.teb.2019.0334 Sarah A Hewes 1 , Reid L Wilson 1, 2 , Mary K Estes 2 , Noah F Shroyer 2 , Sarah E Blutt 2 , K Jane Grande-Allen 1
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Pathologies affecting the small intestine contribute significantly to the disease burden of both the developing and the developed world, which has motivated investigation into the disease mechanisms through in vitro models. Although existing in vitro models recapitulate selected features of the intestine, various important aspects have often been isolated or omitted due to the anatomical and physiological complexity. The small intestine's intricate microanatomy, heterogeneous cell populations, steep oxygen gradients, microbiota, and intestinal wall contractions are often not included in in vitro experimental models of the small intestine, despite their importance in both intestinal biology and pathology. Known and unknown interdependencies between various physiological aspects necessitate more complex in vitro models. Microfluidic technology has made it possible to mimic the dynamic mechanical environment, signaling gradients, and other important aspects of small intestinal biology. This review presents an overview of the complexity of small intestinal anatomy and bioengineered models that recapitulate some of these physiological aspects.
更新日期：2020-08-25
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