title: [Inhibitory effect of resveratrol on expression of IL-1β in mesenchymal stem cells exposed to radiation].
abstract: OBJECTIVE
  To investigate the inhibitory effect of resveratrol on interleukin-1β (IL-1β) production in mesenchymal stem cells (MSCs) exposed to radiation and the action mechanism of resveratrol.
  
  
  METHODS
  MSCs were divided into blank control group, radiation group, shRNA interference group, and resveratrol groups. The resveratrol groups were given different doses of resveratrol (50, 100, and 200 µmol/L) before radiation. The secretion and expression of IL-1β was measured by enzyme-linked immunosorbent assay, Western blot, and RT-PCR.
  
  
  RESULTS
  Compared with the radiation group, the resveratrol groups had significantly decreased extracellular secretion of IL-1β (t = 83.34, 24.48, and 12.52, P < 0.05 for all) and significantly decreased intracellular expression of IL-1β protein and mRNA (t = 8.695, 14.77, and 13.9, P < 0.05 for all). Compared with those given 200 µmol/L resveratrol alone before radiation, the MSCs treated by SIRT1 silencing and given 200 µmol/L resveratrol before radiation had significantly increased extracellular secretion of IL-1β (t = 18.57, P < 0.05) and significantly increased intracellular expression of IL-1β protein and mRNA (t = 10.24, P < 0.05).
  
  
  CONCLUSIONS
  Resveratrol can significantly inhibit the production of IL-1β in MSCs exposed to radiation, and SIRT1 may play a key regulatory role in the process of inflammation induced by radiation.
authors.affiliation: Department of Radiation Hazard Evaluation, Institute of Radiation Medicine of Chinese Academy of Medical Science and Peking Union Medical College, Tianjin Key Lab of Radiation and Nuclear Medicine, Tianjin 300192, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Yue
authors.initials: Y
authors.lastname: Fu
authors.forename: Liqing
authors.initials: L
authors.lastname: Du
authors.forename: Chang
authors.initials: C
authors.lastname: Xu
authors.forename: Feiyue
authors.initials: F
authors.lastname: Fan
authors.forename: Saijun
authors.initials: S
authors.lastname: Fan
authors.forename: Xu
authors.initials: X
authors.lastname: Su
authors.affiliation: E-mail: liuqiang@irm-cams.ac.cn.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
mesh_terms: D002478:Cells, Cultured; D006801:Humans; D053583:Interleukin-1beta / Q000378:metabolism*; D059630:Mesenchymal Stem Cells / Q000187:drug effects* / Q000378:metabolism* / Q000528:radiation effects; D011827:Radiation; D011829:Radiation Dosage; D000077185:Resveratrol; D013267:Stilbenes / Q000494:pharmacology*
chemical_list: D053583:Interleukin-1beta; D013267:Stilbenes; D000077185:Resveratrol