title: Irradiation Response of Adipose-derived Stem Cells under Three-dimensional Culture Condition.
abstract: OBJECTIVE
  Adipose tissue distributes widely in human body. The irradiation response of the adipose cells in vivo remains to be investigated. In this study we investigated irradiation response of adipose-derived stem cells (ASCs) under three-dimensional culture condition.
  
  
  METHODS
  ASCs were isolated and cultured in low attachment dishes to form three-dimensional (3D) spheres in vitro. The neuronal differentiation potential and stem-liked characteristics was monitored by using immunofluoresence staining and flow cytometry in monolayer and 3D culture. To investigate the irradiation sensitivity of 3D sphere culture, the fraction of colony survival and micronucleus were detected in monolayer and 3D culture. Soft agar assays were performed for measuring malignant transformation for the irradiated monolayer and 3D culture.
  
  
  RESULTS
  The 3D cultured ASCs had higher differentiation potential and an higher stem-like cell percentage. The 3D cultures were more radioresistant after either high linear energy transfer (LET) carbon ion beam or low LET X-ray irradiation compared with the monolayer cell. The ASCs' potential of cellular transformation was lower after irradiation by soft agar assay.
  
  
  CONCLUSIONS
  These findings suggest that adipose tissue cell are relatively genomic stable and resistant to genotoxic stress.
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
authors.forename: Ya Rong
authors.initials: YR
authors.lastname: DU
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Pan
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
authors.forename: Ya Xiong
authors.initials: YX
authors.lastname: Chen
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Xue
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
authors.forename: Zhen Xin
authors.initials: ZX
authors.lastname: Ren
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China; University of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Xiao Man
authors.initials: XM
authors.lastname: Li
authors.affiliation: Department of Radiation Oncology, Sichuan Cancer Hospital, Chengdu 610041, Sichuan, China.
authors.forename: Shi Chuan
authors.initials: SC
authors.lastname: Zhang
authors.affiliation: Gansu Key laboratory of Space Radiobiology, Key Laboratory of Heavy Ion Radiation Biology and Medicine of Chinese Academy of Sciences, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, Gansu, China.
authors.forename: Bu Rong
authors.initials: BR
authors.lastname: Hu
mesh_terms: D000273:Adipose Tissue / Q000166:cytology / Q000528:radiation effects*; D018929:Cell Culture Techniques; D002454:Cell Differentiation; D005434:Flow Cytometry; D006801:Humans; D009474:Neurons / Q000166:cytology; D013234:Stem Cells / Q000166:cytology / Q000528:radiation effects*; D014965:X-Rays
keywords: Adipose-derived stem cells; High- and low-LET irradiation; Irradiation response; Three-dimensional cell culture