PMID- 21988324 OWN - NLM STAT- MEDLINE DCOM- 20121002 LR - 20211020 IS - 1557-8534 (Electronic) IS - 1547-3287 (Print) IS - 1547-3287 (Linking) VI - 21 IP - 9 DP - 2012 Jun 10 TI - Oral mucosal progenitor cells are potently immunosuppressive in a dose-independent manner. PG - 1478-87 LID - 10.1089/scd.2011.0434 [doi] AB - Oral mucosal lamina propria progenitor cells (OMLP-PCs) are a novel, clonally derived PC population of neural crest origin with the potential to differentiate down both mesenchymal and neuronal cell lineages. In this study we aimed to determine the immunological properties of OMLP-PCs and to establish whether they would be suitable candidates for allogeneic tissue engineering and in the treatment of immune-related diseases. OMLP-PCs demonstrated no inherent immunogenicity with insignificant expression of costimulatory molecules (CD40, CD80, CD86, CD154, and CD178) or human leukocyte antigen (HLA) class II. OMLP-PCs required 7 days of stimulation with interferon-gamma (IFN-gamma) to induce cell surface expression of HLA II. Mixed lymphocyte cultures and mitogen stimulation demonstrated the potent immunosuppressive capability of OMLP-PCs in a contact-independent manner. Complete inhibition of lymphocyte proliferation was seen at doses as low as 0.001% OMLP-PCs to responder lymphocytes, while annexin V staining confirmed that this immunosuppressive effect was not due to the induction of lymphocyte apoptosis. These data demonstrate, for the first time, that OMLP-PC immunomodulation, unlike that for mesenchymal stem cells, occurs via a dose- and HLA II-independent mechanism by the release of immunosuppressive soluble factors and suggests these cells may have wide ranging potential in future immune-related therapies. FAU - Davies, Lindsay C AU - Davies LC AD - Wound Biology Group, Cardiff Institute of Tissue Engineering and Repair, Tissue Engineering and Reparative Dentistry, School of Dentistry, Cardiff University, Cardiff, United Kingdom. FAU - Lonnies, Helena AU - Lonnies H FAU - Locke, Matthew AU - Locke M FAU - Sundberg, Berit AU - Sundberg B FAU - Rosendahl, Kerstin AU - Rosendahl K FAU - Gotherstrom, Cecilia AU - Gotherstrom C FAU - Le Blanc, Katarina AU - Le Blanc K FAU - Stephens, Phil AU - Stephens P LA - eng GR - G0901562/Medical Research Council/United Kingdom GR - Wellcome Trust/United Kingdom PT - Clinical Trial PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120207 PL - United States TA - Stem Cells Dev JT - Stem cells and development JID - 101197107 RN - 0 (Antigens, CD) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Antigens, CD/immunology MH - Apoptosis/immunology MH - Cell Proliferation MH - Cells, Cultured MH - Coculture Techniques MH - Dose-Response Relationship, Immunologic MH - Female MH - Humans MH - Immune System Diseases/immunology/therapy MH - *Immune Tolerance MH - Interferon-gamma/immunology MH - Lymphocytes/*cytology/*immunology MH - Male MH - Mouth Mucosa/*cytology/*immunology MH - Stem Cells/*cytology/*immunology MH - Tissue Engineering PMC - PMC3359631 EDAT- 2011/10/13 06:00 MHDA- 2012/10/04 06:00 PMCR- 2011/10/11 CRDT- 2011/10/13 06:00 PHST- 2011/10/13 06:00 [entrez] PHST- 2011/10/13 06:00 [pubmed] PHST- 2012/10/04 06:00 [medline] PHST- 2011/10/11 00:00 [pmc-release] AID - 10.1089/scd.2011.0434 [pii] AID - 10.1089/scd.2011.0434 [doi] PST - ppublish SO - Stem Cells Dev. 2012 Jun 10;21(9):1478-87. doi: 10.1089/scd.2011.0434. Epub 2012 Feb 7.