Abstract
The concept of cancer stem cell has developed in leukemia. Recently, it has expanded to include solid tumors such as brain or breast tumors. However, the descriptions are not recognized in human gastrointestinal cancers. We used flow cytometry and the DNA-binding dye (Hoechst 33342) to isolate side population (SP) cells from various human gastrointestinal system cancer cell lines. The SP cell fraction is considered to contain abundant stem cells. Fifteen of 16 cancer cell lines from the gastrointestinal system contained 0.3-2.2% SP cells. We studied the characteristics of the SP cells in hepatic or colon cancer cell lines. The results demonstrated that cancers of the gastrointestinal system do contain SP cells that show some characters of so-called stem cells. In this paper, we report our study results with a review of the literature.
MeSH Terms
ATP-Binding Cassette Transporters
Carcinoma, Hepatocellular/pathology
Cell Differentiation
Cell Division
Cell Line, Tumor
Cell Separation
Colonic Neoplasms/pathology
Drug Resistance, Neoplasm
Flow Cytometry
Gastrointestinal Neoplasms/pathology
Humans
Liver Neoplasms/pathology
Neoplastic Stem Cells/cytology,drug effects
Chemicals
ATP-Binding Cassette Transporters
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Haraguchi Naotsugu
Department of Surgery, Medical Institute of Bioregulation, Kyushu University, Tsurumihara 4546, Beppu 874-0838, Japan.
Inoue Hiroshi
Tanaka Fumiaki
Mimori Koshi
Utsunomiya Tohru
Sasaki Atsushi
Mori Masaki
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