Potential contribution of IL-17-Producing Th-1 cells to defective repair activity in joint inflammation: Partial correction with Th-2-promoting conditions

Citation
M. Chabaud et al., Potential contribution of IL-17-Producing Th-1 cells to defective repair activity in joint inflammation: Partial correction with Th-2-promoting conditions, CYTOKINE, 13(2), 2001, pp. 113-118
Citations number
13
Categorie Soggetti
Cell & Developmental Biology
Journal title
CYTOKINE
ISSN journal
10434666 → ACNP
Volume
13
Issue
2
Year of publication
2001
Pages
113 - 118
Database
ISI
SICI code
1043-4666(20010121)13:2<113:PCOITC>2.0.ZU;2-#
Abstract
To assess the contribution of cell interactions to the production of cytoki nes and type I collagen, fixed synovium T cell clones were cocultured on sy noviocytes and levels of IL-6, LIF and PICP, a marker of type I collagen sy nthesis measured. Levels of IL-6 and LIF were higher with Th-1 than with Th -0 and Th-2 clones. Levels of PICP were decreased with Th-1 clones and incr eased with Th-2 clones. IL-17-producing T cells, all Th-1, were among the h ighest inducers of cytokine and inhibitors of collagen synthesis. Preincuba tion of clones in Th-2 conditions (IL-12 plus anti-IL-4) increased IL-6 pro duction, whereas Th-2 conditions (IL-4 plus anti-IL-12) strongly inhibited IL-6 production and restored repair activity. As rheumatoid synovium is inf iltrated by Th-1 cells, local cell interactions result in a pro-inflammator y pattern with defective repair, which can be reversed at least in part, by a Th-2 pattern. (C) 2001 Academic Press.