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Engineered Decellularized Matrix Hydrogels with Crypt-Villus Topography for Forming Functional Intestinal Epithelium.

Ngoc Ha Luong1, Van Thuy Duong1, Jonathan B Bryan1

  • 1Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, 47907, USA.

Small (Weinheim an Der Bergstrasse, Germany)
|October 22, 2025
PubMed
Summary
This summary is machine-generated.

A novel biofabrication technique creates functional intestine models with realistic crypt/villus structures. This biomimetic model accurately replicates intestinal barrier functions and disease states for research.

Keywords:
3D printingcrypt/villusdecellularized matrixintestinal epithelial barrierinverse moldingsacrificial hydrogels

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Gastroenterology

Background:

  • Replicating the complex crypt/villus topography of the intestine is crucial for developing accurate in vitro models.
  • Existing methods face challenges in recreating the intricate microarchitecture of the intestinal lining.

Purpose of the Study:

  • To develop an inverse molding biofabrication technique for creating functional intestinal models with native-like crypt/villus structures.
  • To establish a biomimetic intestinal model for studying barrier function and disease states.

Main Methods:

  • Utilized digital light processing (DLP) 3D printing to create a sacrificial hydrogel mold (SHM) with negative crypt/villus features.
  • Employed decellularized small intestine submucosa-norbornene (dSIS-NB) solution cast over the SHM, followed by photopolymerization.
  • Achieved SHM dissolution to yield dSIS-NB hydrogels with positive crypt/villus structures.

Main Results:

  • Intestinal epithelial cells formed confluent monolayers with correct polarity on the dSIS-NB matrices within 3 days.
  • The model demonstrated selective and drug-responsive barrier functions, confirmed by transepithelial electrical resistance (TEER) and transport studies.
  • Successfully created an intestinal disease model incorporating both healthy and diseased (flattened) epithelial regions.

Conclusions:

  • The inverse molding technique effectively fabricates biomimetic intestinal models with native-like crypt/villus structures.
  • This advanced model accurately recapitulates intestinal barrier properties and enables the study of disease pathophysiology.
  • The developed biofabrication method offers a promising platform for creating complex tissue models for drug screening and regenerative medicine.