Isolation and comparison of mesenchymal stem-like cells from human gastric cancer and adjacent non-cancerous tissues.
OBJECTIVE
Mesenchymal stem cell (MSC)-like cells, a subpopulation of tumor microenvironment, have been isolated from several tumor tissues. In our previous study, we identified MSC-like cells in human gastric cancer tissues and found their characteristics to be similar to those of bone marrow MSCs. However, whether there are MSC-like cells in adjacent non-cancerous tissues and any difference between the MSC-like cells derived from tumor and non-cancerous tissues are not clear. The aim of this study is to study and research the differences of two mesenchymal stem-like cells.


METHODS
We demonstrate that MSC-like cells can be isolated from both human gastric tumor (hGC-MSCs) and adjacent non-cancerous tissues (hGCN-MSCs) of the same patient. We further compared the characteristics between hGC-MSCs and hGCN-MSCs.


RESULTS
Our results revealed that hGC-MSCs and hGCN-MSCs possessed similar morphological properties; stem cell-associated gene expression, as well as multipotential differentiation capability. We also found differences in cell surface markers, pluripotency, and proliferation-related gene expression between hGCN-MSCs and hGC-MSCs.


CONCLUSIONS
Our findings suggest that MSC-like cells are components of the tumor microenvironment and provide proof for the origin of carcinoma-associated fibroblast, therefore may potentially be used as a target for gastric cancer diagnosis and therapy.
Xu
Xiaomeng
X
School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu, People's Republic of China. xuxiaomeng6@163.com
Zhang
Xu
X
Wang
Sheng
S
Qian
Hui
H
Zhu
Wei
W
Cao
Huiling
H
Wang
Mei
M
Chen
Yuan
Y
Xu
Wenrong
W
D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D014408:Biomarkers, Tumor / Q000096:biosynthesis / Q000235:genetics; D002453:Cell Cycle / Q000502:physiology; D048708:Cell Growth Processes / Q000502:physiology; D005260:Female; D005434:Flow Cytometry; D015870:Gene Expression; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D059630:Mesenchymal Stem Cells / Q000378:metabolism / Q000473:pathology* / Q000502:physiology; D051379:Mice; D008807:Mice, Inbred BALB C; D008875:Middle Aged; D014411:Neoplastic Stem Cells / Q000378:metabolism / Q000473:pathology* / Q000502:physiology; D020133:Reverse Transcriptase Polymerase Chain Reaction; D013274:Stomach Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D059016:Tumor Microenvironment
D014408:Biomarkers, Tumor
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