PMID- 27554322 OWN - NLM STAT- MEDLINE DCOM- 20170911 LR - 20230322 IS - 1557-8534 (Electronic) IS - 1547-3287 (Linking) VI - 25 IP - 21 DP - 2016 Nov 1 TI - Perivascular Mesenchymal Stem Cells in Sheep: Characterization and Autologous Transplantation in a Model of Articular Cartilage Repair. PG - 1659-1669 LID - 10.1089/scd.2016.0165 [doi] AB - Previous research has indicated that purified perivascular stem cells (PSCs) have increased chondrogenic potential compared to conventional mesenchymal stem cells (MSCs) derived in culture. This study aimed to develop an autologous large animal model for PSC transplantation and to specifically determine if implanted cells are retained in articular cartilage defects. Immunohistochemistry and fluorescence-activated cell sorting were used to ascertain the reactivity of anti-human and anti-ovine antibodies, which were combined and used to identify and isolate pericytes (CD34(-)CD45(-)CD146(+)) and adventitial cells (CD34(+)CD45(-)CD146(-)). The purified cells demonstrated osteogenic, adipogenic, and chondrogenic potential in culture. Autologous ovine PSCs (oPSCs) were isolated, cultured, and efficiently transfected using a green fluorescence protein (GFP) encoding lentivirus. The cells were implanted into articular cartilage defects on the medial femoral condyle using hydrogel and collagen membranes. Four weeks following implantation, the condyle was explanted and confocal laser scanning microscopy demonstrated the presence of oPSCs in the defect repaired with the hydrogel. These data suggest the testability in a large animal of native MSC autologous grafting, thus avoiding possible biases associated with xenotransplantation. Such a setting will be used in priority for indications in orthopedics, at first to model articular cartilage repair. FAU - Hindle, Paul AU - Hindle P AD - 1 MRC Centre for Regenerative Medicine, The University of Edinburgh , Edinburgh, United Kingdom . AD - 2 Department of Trauma and Orthopaedic Surgery, The Royal Infirmary of Edinburgh , Edinburgh, United Kingdom . FAU - Baily, James AU - Baily J AD - 1 MRC Centre for Regenerative Medicine, The University of Edinburgh , Edinburgh, United Kingdom . FAU - Khan, Nusrat AU - Khan N AD - 1 MRC Centre for Regenerative Medicine, The University of Edinburgh , Edinburgh, United Kingdom . FAU - Biant, Leela C AU - Biant LC AD - 2 Department of Trauma and Orthopaedic Surgery, The Royal Infirmary of Edinburgh , Edinburgh, United Kingdom . FAU - Simpson, A Hamish R AU - Simpson AH AD - 2 Department of Trauma and Orthopaedic Surgery, The Royal Infirmary of Edinburgh , Edinburgh, United Kingdom . FAU - Peault, Bruno AU - Peault B AD - 1 MRC Centre for Regenerative Medicine, The University of Edinburgh , Edinburgh, United Kingdom . AD - 3 The University of California , Los Angeles, Los Angeles, California. LA - eng GR - G1000816/MRC_/Medical Research Council/United Kingdom GR - MR/K015710/1/MRC_/Medical Research Council/United Kingdom GR - MR/K017047/1/MRC_/Medical Research Council/United Kingdom GR - MR/L012766/1/MRC_/Medical Research Council/United Kingdom PT - Journal Article DEP - 20160823 PL - United States TA - Stem Cells Dev JT - Stem cells and development JID - 101197107 RN - 0 (Antibodies) RN - 147336-22-9 (Green Fluorescent Proteins) RN - 25852-47-5 (Hydrogel, Polyethylene Glycol Dimethacrylate) SB - IM MH - Animals MH - Antibodies/immunology MH - Blood Vessels/*cytology MH - Cartilage, Articular/drug effects/*pathology MH - Cell Differentiation/drug effects MH - Cell Proliferation/drug effects MH - Cells, Cultured MH - Cross Reactions/immunology MH - Disease Models, Animal MH - Flow Cytometry MH - Green Fluorescent Proteins/metabolism MH - Hydrogel, Polyethylene Glycol Dimethacrylate/pharmacology MH - Immunohistochemistry MH - *Mesenchymal Stem Cell Transplantation MH - Mesenchymal Stem Cells/*cytology/drug effects MH - Pericytes/cytology/drug effects MH - Sheep MH - Transfection MH - Transplantation, Autologous MH - *Wound Healing/drug effects OTO - NOTNLM OT - CD34+ OT - autologous stem cell transplantation OT - green fluorescent protein OT - in vivo tracking OT - pericytes OT - sheep model EDAT- 2016/08/25 06:00 MHDA- 2017/09/12 06:00 CRDT- 2016/08/25 06:00 PHST- 2016/08/25 06:00 [pubmed] PHST- 2017/09/12 06:00 [medline] PHST- 2016/08/25 06:00 [entrez] AID - 10.1089/scd.2016.0165 [doi] PST - ppublish SO - Stem Cells Dev. 2016 Nov 1;25(21):1659-1669. doi: 10.1089/scd.2016.0165. Epub 2016 Aug 23.