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Updated: Mar 26, 2026
Isolation of CD 90+ Fibroblast/Myofibroblasts from Human Frozen Gastrointestinal Specimens
Published on: January 31, 2016
Isolation of CD 90+ Fibroblast/Myofibroblasts from Human Frozen Gastrointestinal Specimens
Paul Johnson1, Ellen J Beswick2, Celia Chao1
1Surgery, University of Texas Medical Branch.
Abstract:
Fibroblasts/myofibroblasts (MFs) have been gaining increasing attention for their role in pathogenesis and their contributions to both wound healing and promotion of the tumor microenvironment. While there are currently many techniques for the isolation of MFs from gastrointestinal (GI) tissues, this protocol introduces a novel element of isolation of these stromal cells from frozen tissue. Freezing GI tissue specimens not only allows the researcher to acquire samples from worldwide collaborators, biobanks, and commercial vendors, it also permits the delayed processing of fresh samples. The described protocol will consistently yield characteristic spindle-shaped cells with the MF phenotype that express the markers CD90, α-SMA and vimentin. As these cells are derived from patient samples, the use of primary cells also confers the benefit of closely mimicking MFs from disease states-namely cancer and inflammatory bowel diseases. This technique has been validated in gastric, small bowel, and colonic MF primary culture generation. Primary MF cultures can be used in a vast array of experiments over a number of passage and their purity assessed by both immunocytochemistry and flow cytometry analysis.
Insights
This study presents a novel protocol for isolating fibroblasts/myofibroblasts (MFs) from frozen gastrointestinal tissues. This method enables reliable characterization of MFs from various disease states for research.
Area of Science:
- Cell Biology
- Gastroenterology
- Oncology
Background:
- Fibroblasts/myofibroblasts (MFs) are crucial in wound healing and the tumor microenvironment.
- Existing methods for MFs isolation from gastrointestinal (GI) tissues have limitations.
- Frozen tissue processing allows for delayed sample analysis and access to diverse sample sources.
Purpose of the Study:
- To introduce a novel protocol for isolating MFs from frozen GI tissues.
- To enable the study of MFs from various disease states using primary cell cultures.
- To validate the protocol's efficacy across different GI tissue types.
Main Methods:
- Isolation of MFs from frozen GI tissue specimens.
- Culture and expansion of primary MF cells.
- Characterization of isolated MFs using immunocytochemistry and flow cytometry for markers like CD90, α-SMA, and vimentin.
Main Results:
- The protocol consistently yields spindle-shaped cells with the MF phenotype.
- Isolated MFs express characteristic markers: CD90, α-SMA, and vimentin.
- The technique is validated for gastric, small bowel, and colonic tissues.
Conclusions:
- This protocol offers a reliable method for isolating MFs from frozen GI tissues.
- Primary MF cultures derived from patient samples accurately mimic disease states like cancer and inflammatory bowel diseases.
- The method supports diverse downstream applications in research, including studies on pathogenesis and therapeutic development.
