{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T20:21:29Z","timestamp":1789417289986,"version":"build-2803163510"},"reference-count":44,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2017,2,23]],"date-time":"2017-02-23T00:00:00Z","timestamp":1487808000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2017,5,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Regeneration of injured tissues requires effective therapeutic strategies supporting vasculogenesis. The lack of instantly available autologous cell sources and immunogenicity of allogeneic endothelial (progenitor) cells limits clinical progress. Based on the immunosuppressive potency of mesenchymal stem\/progenitor cells (MSCs), we investigated whether crosstalk between endothelial colony-forming progenitor cells (ECFCs) and MSCs during vasculogenesis could lower allogeneic T cell responses against ECFCs allowing long-term engraftment in vivo. Immunodeficient mice received subcutaneous grafts containing human ECFCs alone, or pairs of human ECFCs\/MSCs from the same umbilical cord (UC) to study vasculogenesis in the presence of human leukocyte antigen (HLA)-mismatched human peripheral blood mononuclear cells (PBMCs). In vitro, cell surface marker changes due to interferon gamma (IFN\u03b3) stimulation during ECFC\/MSC coculture were determined and further effects on allostimulated T cell proliferation and cytotoxic lysis were measured. IFN\u03b3-induced HLA-DR expression on ECFCs and MSCs, but both cell types had significantly less HLA-DR in cocultures. ECFC-induced T cell proliferation was abolished after MSC coculture as a result of HLA-DR downregulation and indolamin-2,3-dioxygenase activation. Additionally, allospecific CD8+ T cell-mediated lysis of ECFCs was reduced in cocultures. ECFC\/MSC coapplication in immunodeficient mice not only promoted the generation of improved blood vessel architecture after 6 weeks, but also reduced intragraft immune cell infiltration and endothelial HLA-DR expression following PBMC reconstitution. Crosstalk between UC-derived ECFCs and MSCs after combined transplantation can lower the risk of ECFC rejection, thus enabling their coapplication for therapeutic vasculogenesis.<\/jats:p>","DOI":"10.1002\/stem.2573","type":"journal-article","created":{"date-parts":[[2017,1,18]],"date-time":"2017-01-18T23:33:06Z","timestamp":1484782386000},"page":"1233-1245","source":"Crossref","is-referenced-by-count":25,"title":["Stromal Cells Act as Guardians for Endothelial Progenitors by Reducing Their Immunogenicity After Co-Transplantation"],"prefix":"10.1093","volume":"35","author":[{"given":"Naima","family":"Souidi","sequence":"first","affiliation":[{"name":"a Institute of Medical Immunology, Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"},{"name":"b Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meaghan","family":"Stolk","sequence":"additional","affiliation":[{"name":"b Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juliane","family":"Rudeck","sequence":"additional","affiliation":[{"name":"a Institute of Medical Immunology, Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dirk","family":"Strunk","sequence":"additional","affiliation":[{"name":"c Institute of Experimental and Clinical Cell Therapy, Paracelsus Medical University, Salzburg, Austria"},{"name":"d Spinal Cord & Tissue Regeneration Center, Paracelsus Medical University, Salzburg, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katharina","family":"Schallmoser","sequence":"additional","affiliation":[{"name":"d Spinal Cord & Tissue Regeneration Center, Paracelsus Medical University, Salzburg, Austria"},{"name":"e Department for Blood Group Serology and Transfusion Medicine, Paracelsus Medical University, Salzburg, Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hans-Dieter","family":"Volk","sequence":"additional","affiliation":[{"name":"a Institute of Medical Immunology, Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"},{"name":"b Berlin-Brandenburg Center for Regenerative Therapies (BCRT), Charit\u00e9 Universit\u00e4tsmedizin Berlin, Campus Virchow-Klinikum, Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martina","family":"Seifert","sequence":"additional","affiliation":[{"name":"a Institute of Medical Immunology, Charit\u00e9 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