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Published in: Digestive Diseases and Sciences 3/2014

01-03-2014 | Original Article

Gastritis Promotes an Activated Bone Marrow-Derived Mesenchymal Stem Cell with a Phenotype Reminiscent of a Cancer-Promoting Cell

Authors: Jessica M. Donnelly, Amy C. Engevik, Melinda Engevik, Michael A. Schumacher, Chang Xiao, Li Yang, Roger T. Worrell, Yana Zavros

Published in: Digestive Diseases and Sciences | Issue 3/2014

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Abstract

Background

Bone marrow-derived mesenchymal stem cells (BM-MSCs) promote gastric cancer in response to gastritis. In culture, BM-MSCs are prone to mutation with continued passage but it is unknown whether a similar process occurs in vivo in response to gastritis.

Aim

The purpose of this study was to identify the role of chronic gastritis in the transformation of BM-MSCs leading to an activated cancer-promoting phenotype.

Methods

Age matched C57BL/6 (BL/6) and gastrin deficient (GKO) mice were used for isolation of stomach, serum and mesenchymal stem cells (MSCs) at 3 and 6 months of age. MSC activation was assessed by growth curve analysis, fluorescence-activated cell sorting and xenograft assays. To allow for the isolation of bone marrow-derived stromal cells and assay in response to chronic gastritis, IRG/Vav-1Cre mice that expressed both enhanced green fluorescent protein-expressing hematopoietic cells and red fluorescent protein-expressing stromal cells were generated. In a parabiosis experiment, IRG/Vav-1Cre mice were paired to either an uninfected Vav-1Cre littermate or a BL/6 mouse inoculated with Helicobacter pylori.

Results

GKO mice displayed severe atrophic gastritis accompanied by elevated gastric tissue and circulating transforming growth factor beta (TGFβ) by 3 months of age. Compared to BM-MSCs isolated from uninflamed BL/6 mice, BM-MSCs isolated from GKO mice displayed an increased proliferative rate and elevated phosphorylated-Smad3 suggesting active TGFβ signaling. In xenograft assays, mice injected with BM-MSCs from 6-month-old GKO animals displayed tumor growth. RFP+ stromal cells were rapidly recruited to the gastric mucosa of H. pylori parabionts and exhibited changes in gene expression.

Conclusions

Gastritis promotes the in vivo activation of BM-MSCs to a phenotype reminiscent of a cancer-promoting cell.
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Metadata
Title
Gastritis Promotes an Activated Bone Marrow-Derived Mesenchymal Stem Cell with a Phenotype Reminiscent of a Cancer-Promoting Cell
Authors
Jessica M. Donnelly
Amy C. Engevik
Melinda Engevik
Michael A. Schumacher
Chang Xiao
Li Yang
Roger T. Worrell
Yana Zavros
Publication date
01-03-2014
Publisher
Springer US
Published in
Digestive Diseases and Sciences / Issue 3/2014
Print ISSN: 0163-2116
Electronic ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-013-2927-z

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