title: Suppressor of cytokine signaling 3 (SOCS3) gene transfer prolongs the survival of the murine cardiac allograft by attenuating interleukin-17-producing alloreactive T-cell responses.
abstract: BACKGROUND
  Suppressor of cytokine signaling 3 (SOCS3) is the main negative feedback regulator of cytokine signals. We investigated the hypothesis that overexpression of SOCS3 in a murine cardiac allograft transplantation model may result in a survival advantage of the allograft by attenuating alloreactive T-cell responses.
  
  
  METHODS
  With the use of BALB/c (H-2(d) ) donor mice and C57Bl/6j (H-2(b) ) recipient mice, the murine cardiac transplantation model was established. Recipient mice received a tail intravenous injection with eukaryotic expression plasmid pEF-FLAG-I/mSOCS3 before and after transplantation. The heart beat of the grafts and immune responses were monitored.
  
  
  RESULTS
  Overexpression of SOCS3 within grafts and spleens can prolong the survival time of cardiac allografts by attenuating infiltration of inflammatory cells such as T cells and macrophages in the grafts, decreasing the number of CD4(+) IL-17(+) cells and CD8(+) IL-17(+) cells in spleens, as well as reducing the expression of STAT3 in grafts and phosphorylation of STAT3 in both grafts and spleens.
  
  
  CONCLUSIONS
  Overexpression of SOCS3 significantly delays cardiac allograft acute rejection, which is associated with reduced allograft proinflammatory leukocyte infiltration and impaired alloreactive IL-17(+) T cell immunity.
authors.affiliation: Department of Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China; Cancer Biology Research Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Xu
authors.forename: Fang
authors.initials: F
authors.lastname: Zheng
authors.forename: Feili
authors.initials: F
authors.lastname: Gong
authors.forename: Min
authors.initials: M
authors.lastname: Fang
mesh_terms: D064591:Allografts / Q000637:transplantation*; D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D004195:Disease Models, Animal; D005260:Female; D006084:Graft Rejection / Q000235:genetics / Q000517:prevention & control*; D006321:Heart / Q000502:physiology*; D016027:Heart Transplantation / Q000379:methods*; D020381:Interleukin-17 / Q000276:immunology / Q000378:metabolism*; D051379:Mice; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D050796:STAT3 Transcription Factor / Q000037:antagonists & inhibitors / Q000235:genetics / Q000378:metabolism; D013154:Spleen / Q000378:metabolism; D000071223:Suppressor of Cytokine Signaling 3 Protein; D050826:Suppressor of Cytokine Signaling Proteins / Q000235:genetics* / Q000378:metabolism; D015854:Up-Regulation
chemical_list: D020381:Interleukin-17; D050796:STAT3 Transcription Factor; C491411:Socs3 protein, mouse; C494087:Stat3 protein, mouse; D000071223:Suppressor of Cytokine Signaling 3 Protein; D050826:Suppressor of Cytokine Signaling Proteins
keywords: IL-17+ T cells; SOCS3; cardiac transplantation; pSTAT3