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Isolation of tumor spheres and mesenchymal stem-like cells from a single primitive neuroectodermal tumor specimen

 Jiyong Kwak  ;  Hye-Jin Shin  ;  Se-Hoon Kim  ;  Jin-Kyoung Shim  ;  Ji-Hyun Lee  ;  Yong-Min Huh  ;  Eui-Hyun Kim  ;  Eun-Kyung Park  ;  Jong Hee Chang  ;  Sun Ho Kim  ;  Yong-Kil Hong  ;  Dong-Seok Kim  ;  Su-Jae Lee  ;  Seok-Gu Kang 
 Child's Nervous System, Vol.29(12) : 2229-2239, 2013 
Journal Title
 Child's Nervous System 
Issue Date
PURPOSE: It has been reported that cancer stem cells (CSCs) can be isolated from primitive neuroectodermal tumor (PNET) specimens. Moreover, mesenchymal stem-like cells (MSLCs) have been isolated from Korean glioma specimens. Here, we tested whether tumor spheres and MSLCs can be simultaneously isolated from a single PNET specimen, a question that has not been addressed. METHODS: We isolated single-cell suspensions from PNET specimens, then cultured these cells using methods for MSLCs or CSCs. Cultured cells were analyzed for surface markers of CSCs using immunocytochemistry and for surface markers of bone marrow-derived mesenchymal stem cells (BM-MSCs) using fluorescence-activated cell sorting (FACS). Tumor spheres were exposed to neural differentiation conditions, and MSLCs were exposed to mesenchymal differentiation conditions. Possible locations of MSLCs within PNET specimens were determined by immunofluorescence analysis of tumor sections. RESULTS: Cells similar to tumor spheres and MSLCs were independently isolated from one of two PNET specimens. Spheroid cells, termed PNET spheres, were positive for CD133 and nestin, and negative for musashi and podoplanin. PNET spheres were capable of differentiation into immature neural cells and astrocytes, but not oligodendrocytes or mature neural cells. FACS analysis revealed that adherent cells isolated from the same PNET specimen, termed PNET-MSLCs, had surface markers similar to BM-MSCs. These cells were capable of mesenchymal differentiation. Immunofluorescence labeling indicated that some CD105(+) cells might be closely related to endothelial cells and pericytes. CONCLUSION: We showed that both tumor spheres and MSLCs can be isolated from the same PNET specimen. PNET-MSLCs occupied a niche in the vicinity of the vasculature and could be a source of stroma for PNETs.
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1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Pathology (병리학교실) > 1. Journal Papers
Yonsei Authors
Kang, Seok Gu(강석구) ORCID logo https://orcid.org/0000-0001-5676-2037
Kwak, Jiyong(곽지용) ORCID logo https://orcid.org/0000-0002-7738-9136
Kim, Dong Seok(김동석)
Kim, Sun Ho(김선호) ORCID logo https://orcid.org/0000-0003-0970-3848
Kim, Se Hoon(김세훈) ORCID logo https://orcid.org/0000-0001-7516-7372
Kim, Eui Hyun(김의현) ORCID logo https://orcid.org/0000-0002-2523-7122
Park, Eun Kyung(박은경)
Lee, Ji Hyun(이지현) ORCID logo https://orcid.org/0000-0002-9223-9478
Chang, Jong Hee(장종희)
Huh, Yong Min(허용민) ORCID logo https://orcid.org/0000-0002-9831-4475
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