title: [Host glial cell canceration induced by glioma stem cells in GFP/RFP dual fluorescence orthotopic glioma models in nude mice].
abstract: OBJECTIVE
  During the process of tissue remodeling in human tumor transplantation models, the roles of the inoculated tumor cells and host tissue in tumor progression is still largely unknown. The aim of this study was to investigate the relationships and interactions between these two sides using GFP-RFP double fluorescence tracing technique.
  
  
  METHODS
  Red fluorescence protein (RFP) gene was stably transfected into glioma stem cell line SU3, then SU3-RFP cells were transplanted into the brain of athymic nude mice with green fluorescence protein (GFP) expression. After the intracerebral tumors were formed, the relationship and interaction between GFP cells and RFP cells were analyzed. Highly proliferative GFP cells were screened out, and monocloned with micro-pipetting. DNA content assay, chromosome banding and carcinogenicity test of the GFP cells were performed to observe the GFP cells' cancerous phenotype in nude mice.
  
  
  RESULTS
  In the transplantable tumor tissue, besides a great quantity of RFP cells, there were still a proportion of GFP cells and GFP/RFP fusion cells. The proportion of RFP cells, GFP cells and GFP/RFP cells were (88.99 ± 1.46)%, (5.59 ± 1.00)%, and (4.11 ± 1.020)%, respectively. Two monoclonal host GFP cells (H1 and H9) were cloned, which demonstrated the properties of immortality, loss of contact inhibition, and ultra-tetraploid when cultured in vitro. Both H1 and H9 cells expressed CNP, a specific marker of oligodendrocytes. The GFP cells also demonstrated 100% tumorigenic rate and high invasive properties in vivo.
  
  
  CONCLUSIONS
  In this glioma transplantation model, the transplanted tumor tissues contained not only transplanted glioma stem cells but also cancerous host GFP cells. Our findings offer important clues to further research on the relationships among different members in the tumor microenvironment.
authors: Department of Neurosurgery, Soochow University, Suzhou, China.
authors: Yan-ming
authors: YM
authors: Chen
authors: Xi-feng
authors: XF
authors: Fei
authors: Ai-dong
authors: AD
authors: Wang
authors: Xing-liang
authors: XL
authors: Dai
authors: Jin-shi
authors: JS
authors: Zhang
authors: Bao-qian
authors: BQ
authors: Cui
authors: Quan-bin
authors: QB
authors: Zhang
authors: Yao-dong
authors: YD
authors: Zhao
authors: Hua
authors: H
authors: Chen
authors: Zhi-min
authors: ZM
authors: Wang
authors: Qing
authors: Q
authors: Lan
authors: Jun
authors: J
authors: Dong
authors: Qiang
authors: Q
authors: Huang
mesh_terms: D063309:2',3'-Cyclic Nucleotide 3'-Phosphodiesterase / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000166:cytology* / Q000378:metabolism; D002450:Cell Communication; D045744:Cell Line, Tumor; D002471:Cell Transformation, Neoplastic; D005910:Glioma / Q000378:metabolism / Q000473:pathology*; D049452:Green Fluorescent Proteins / Q000378:metabolism*; D006801:Humans; D007381:Intermediate Filament Proteins / Q000378:metabolism; D008164:Luminescent Proteins / Q000235:genetics / Q000378:metabolism*; D051379:Mice; D008810:Mice, Inbred C57BL; D008819:Mice, Nude; D009368:Neoplasm Transplantation; D014411:Neoplastic Stem Cells / Q000166:cytology* / Q000378:metabolism; D009419:Nerve Tissue Proteins / Q000378:metabolism; D064231:Nestin; D009457:Neuroglia / Q000166:cytology* / Q000378:metabolism; D014162:Transfection; D059016:Tumor Microenvironment; D000097573:Red Fluorescent Protein
chemical_list: D063309:2',3'-Cyclic Nucleotide 3'-Phosphodiesterase; D049452:Green Fluorescent Proteins; D007381:Intermediate Filament Proteins; D008164:Luminescent Proteins; D009419:Nerve Tissue Proteins; D064231:Nestin; D000097573:Red Fluorescent Protein; C577484:NES protein, human; C577485:Nes protein, mouse