title: Angiostatin gene transfer as an effective treatment strategy in murine collagen-induced arthritis.
abstract: OBJECTIVE
  To determine the efficacy of local therapy with human angiostatin gene in murine collagen-induced arthritis (CIA).
  
  
  METHODS
  DBA/1 mice were immunized with bovine type II collagen. Before the onset of arthritis, NIH3T3 fibroblasts, transduced with angiostatin-expressing retroviral vectors or control vectors, were transplanted into the knee cavity. The incidence of arthritis in the knee joints was evaluated histologically based on pannus formation and cartilage destruction. Paws were evaluated macroscopically for redness, swelling, and deformities and immunologically for levels of interleukin-1 beta. Angiogenesis in paws and knee joints was studied by immunohistochemistry using anti-CD31 antibody and measurement of von Willebrand factor levels.
  
  
  RESULTS
  Pannus formation and cartilage erosion were dramatically reduced in knees transplanted with angiostatin-expressing cells. In addition, the onset of CIA in the ipsilateral paws below the knees injected with the angiostatin gene was significantly prevented. Furthermore, angiostatin gene transfer inhibited arthritis-associated angiogenesis.
  
  
  CONCLUSIONS
  Local production of angiostatin in the knee was able to prevent the onset of CIA not only in the knee injected with genetically engineered cells, but also in the uninjected ipsilateral paw. This suggests that transfer of the angiostatin gene, and potentially also its protein, may provide a new, effective approach to the treatment of rheumatoid arthritis.
authors.affiliation: ViroMed Ltd. and Seoul National University, Kwak-Ak-Gu, Seoul, Korea.
authors.forename: Jong-Mook
authors.initials: JM
authors.lastname: Kim
authors.forename: Seong-Hyun
authors.initials: SH
authors.lastname: Ho
authors.forename: Eun-Jin
authors.initials: EJ
authors.lastname: Park
authors.forename: Woong
authors.initials: W
authors.lastname: Hahn
authors.forename: Hongchan
authors.initials: H
authors.lastname: Cho
authors.forename: Jae-Gyun
authors.initials: JG
authors.lastname: Jeong
authors.forename: Yun-Woo
authors.initials: YW
authors.lastname: Lee
authors.forename: Sunyoung
authors.initials: S
authors.lastname: Kim
mesh_terms: D016475:3T3 Cells / Q000166:cytology / Q000502:physiology / Q000637:transplantation; D043168:Angiostatins; D000818:Animals; D001169:Arthritis, Experimental / Q000150:complications / Q000517:prevention & control / Q000628:therapy*; D001808:Blood Vessels / Q000473:pathology; D002417:Cattle; D002452:Cell Count; D002460:Cell Line; D015870:Gene Expression; D015316:Genetic Therapy; D006614:Hindlimb; D006801:Humans; D007596:Joints / Q000378:metabolism; D051379:Mice; D009389:Neovascularization, Pathologic / Q000209:etiology / Q000473:pathology / Q000628:therapy; D010446:Peptide Fragments / Q000235:genetics*; D010958:Plasminogen / Q000235:genetics*; D013997:Time Factors
chemical_list: D010446:Peptide Fragments; D043168:Angiostatins; D010958:Plasminogen