PMID- 24928317 OWN - NLM STAT- MEDLINE DCOM- 20150511 LR - 20220311 IS - 1522-9653 (Electronic) IS - 1063-4584 (Linking) VI - 22 IP - 8 DP - 2014 Aug TI - Treatment efficacy of adipose-derived stem cells in experimental osteoarthritis is driven by high synovial activation and reflected by S100A8/A9 serum levels. PG - 1158-66 LID - S1063-4584(14)01101-7 [pii] LID - 10.1016/j.joca.2014.05.022 [doi] AB - OBJECTIVE: Synovitis is evident in a substantial subpopulation of patients with osteoarthritis (OA) and is associated with development of pathophysiology. Recently we have shown that adipose-derived stem cells (ASC) inhibit joint destruction in collagenase-induced experimental OA (CIOA). In the current study we explored the role of synovitis and alarmins S100A8/A9 in the immunomodulatory capacity of ASCs in experimental OA. METHOD: CIOA, characterized by synovitis, and surgical DMM (destabilization of medial meniscus) OA were treated locally with ASCs. Synovial activation, cartilage damage and osteophyte size were measured on histological sections. Cytokines in synovial washouts and serum were determined using Luminex or enzyme-linked immunosorbent assay (S100A8/A9), mRNA levels with reverse-transcriptase (RT)-qPCR. RESULTS: Local administration of ASCs at various time-points (days 7 or 14) after DMM induction had no effect on OA pathology. At day 7 of CIOA, already 6 h after ASC injection mRNA expression of pro-inflammatory mediators S100A8/A9, interleukin-1beta (IL-1beta) and KC was down-regulated in the synovium. IL-1beta protein, although low, was down-regulated by ASC-treatment of CIOA. S100A8/A9 protein levels were very high at 6 and 48 h and were decreased by ASC-treatment. The protective action of ASC treatment in CIOA was only found when high synovial inflammation was present at the time of deposition which was reflected by high serum S100A8/A9 levels. Finally, successful treatment resulted in significantly lower levels of serum S100A8/A9. CONCLUSION: Our study indicates that synovial activation rapidly drives anti-inflammatory and protective effects of intra-articularly deposited ASCs in experimental OA which is reflected by decreased S100A8/A9 levels. CI - Copyright (c) 2014 Osteoarthritis Research Society International. Published by Elsevier Ltd. All rights reserved. FAU - Schelbergen, R F AU - Schelbergen RF AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. Electronic address: Rik.Schelbergen@radboudumc.nl. FAU - van Dalen, S AU - van Dalen S AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - ter Huurne, M AU - ter Huurne M AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - Roth, J AU - Roth J AD - Institute of Immunology, University of Munster, Germany. FAU - Vogl, T AU - Vogl T AD - Institute of Immunology, University of Munster, Germany. FAU - Noel, D AU - Noel D AD - Inserm U844, Hopital Saint-Eloi, Montpellier, France. FAU - Jorgensen, C AU - Jorgensen C AD - Inserm U844, Hopital Saint-Eloi, Montpellier, France. FAU - van den Berg, W B AU - van den Berg WB AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - van de Loo, F A AU - van de Loo FA AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - Blom, A B AU - Blom AB AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. FAU - van Lent, P L E M AU - van Lent PL AD - Experimental Rheumatology, Radboud University Medical Center, Nijmegen, The Netherlands. Electronic address: Peter.vanLent@radboudumc.nl. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140610 PL - England TA - Osteoarthritis Cartilage JT - Osteoarthritis and cartilage JID - 9305697 RN - 0 (Calgranulin A) RN - 0 (Calgranulin B) RN - 0 (IL1B protein, mouse) RN - 0 (Interleukin-1beta) RN - 0 (RNA, Messenger) RN - 0 (S100A9 protein, mouse) RN - 0 (S100a8 protein, mouse) RN - EC 3.4.24.- (Collagenases) SB - IM MH - Adipose Tissue/cytology MH - Animals MH - Arthritis, Experimental/*therapy MH - Calgranulin A/*blood/genetics MH - Calgranulin B/*blood/genetics MH - Cartilage, Articular/metabolism MH - Collagenases/toxicity MH - Disease Models, Animal MH - Interleukin-1beta/genetics/metabolism MH - Menisci, Tibial/*surgery MH - Mice MH - Osteoarthritis, Knee/metabolism/*therapy MH - RNA, Messenger/*genetics MH - Reverse Transcriptase Polymerase Chain Reaction MH - Stem Cell Transplantation/*methods MH - Stem Cells/cytology MH - Synovial Membrane/*metabolism MH - Synovitis/metabolism/therapy OTO - NOTNLM OT - Adipose stem cells OT - Animal models OT - Experimental OA OT - S100 OT - Synovitis EDAT- 2014/06/15 06:00 MHDA- 2015/05/12 06:00 CRDT- 2014/06/15 06:00 PHST- 2014/04/08 00:00 [received] PHST- 2014/05/23 00:00 [revised] PHST- 2014/05/28 00:00 [accepted] PHST- 2014/06/15 06:00 [entrez] PHST- 2014/06/15 06:00 [pubmed] PHST- 2015/05/12 06:00 [medline] AID - S1063-4584(14)01101-7 [pii] AID - 10.1016/j.joca.2014.05.022 [doi] PST - ppublish SO - Osteoarthritis Cartilage. 2014 Aug;22(8):1158-66. doi: 10.1016/j.joca.2014.05.022. Epub 2014 Jun 10.