Related Experiment Video
Updated: Jan 30, 2026

In Vitro and In Vivo Approaches to Determine Intestinal Epithelial Cell Permeability
Published on: October 19, 2018
MicroRNA Determines the Fate of Intestinal Epithelial Cell Differentiation and Regulates Intestinal Diseases
Sujuan Ding1,2,3, Gang Liu1,2, Hongmei Jiang1
1College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, China.
Abstract:
The rapid self-renewal of intestinal epithelial cells enhances intestinal function, promotes the nutritional needs of animals and strengthens intestinal barrier function to resist the invasion of foreign pathogens. MicroRNAs (miRNAs) are a class of short-chain, non-coding RNAs that regulate stem cell proliferation and differentiation by down-regulating hundreds of conserved target genes after transcription via seed pairing to the 3' untranslated regions. Numerous studies have shown that miRNAs can improve intestinal function by participating in the proliferation and differentiation of different cell populations in the intestine. In addition, miRNAs also contribute to disease regulation and therefore not only play a vital role in the gastrointestinal disease management but also act as blood or tissue biomarkers of disease. As changes to the levels of miRNAs can change cell fates, miRNA-mediated gene regulation can be used to update therapeutic strategies and approaches to disease treatment.
Insights
MicroRNAs (miRNAs) are key regulators of intestinal epithelial cell renewal, function, and barrier integrity. Understanding miRNA roles offers new therapeutic strategies for gastrointestinal diseases.
Area of Science:
- Gastroenterology
- Molecular Biology
- Cell Biology
Background:
- Intestinal epithelial cells rapidly self-renew, maintaining gut function and barrier integrity.
- MicroRNAs (miRNAs) are non-coding RNAs regulating gene expression post-transcriptionally.
- miRNAs are implicated in intestinal cell proliferation, differentiation, and disease regulation.
Purpose of the Study:
- To explore the role of miRNAs in intestinal epithelial cell function.
- To highlight the significance of miRNAs in gastrointestinal disease management.
- To discuss the potential of miRNAs as therapeutic targets and biomarkers.
Main Methods:
- Review of existing literature on miRNA function in the intestine.
- Analysis of miRNA-mediated gene regulation mechanisms.
- Examination of miRNA involvement in intestinal homeostasis and disease.
Main Results:
- miRNAs are crucial for regulating intestinal stem cell proliferation and differentiation.
- Dysregulated miRNA levels are linked to gastrointestinal diseases.
- miRNAs can serve as potential biomarkers for disease diagnosis and prognosis.
Conclusions:
- miRNAs play a vital role in maintaining intestinal health and function.
- miRNA-based therapies hold promise for treating gastrointestinal disorders.
- Targeting miRNAs can offer novel strategies for gastrointestinal disease management.
Related Concept Videos
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
Small Intestine
The small intestine is divided into three main sections - the duodenum, jejunum, and ileum. The duodenum, approximately 25 cm long, is nearest the stomach. It acts as a 'mixing bowl,' where chyme (partially digested food) blends with digestive enzymes from the pancreas and liver. The duodenum's unique...
Large Intestine
The ileocecal sphincter, a mucous membrane fold, guards the opening from the ileum to the large intestine. This valve permits material from the small intestine to pass into the large intestine. Attached to the ileocecal valve is the cecum. This small pouch, approximately 6 cm long, has a twisted, coiled tube known as...
MicroRNAs
Renewal of Intestinal Stem Cells
Histology of the Large Intestine
The innermost mucosa layer comprises simple columnar epithelium, lamina propria, and muscularis mucosae. This layer is primarily populated with absorptive cells, tasked with water absorption, and goblet cells, responsible for secreting mucus to...

