Nanosized UCMSC-derived extracellular vesicles but not conditioned medium exclusively inhibit the inflammatory response of stimulated T cells: implications for nanomedicine

被引:144
作者
Monguio-Tortajada, Marta [1 ]
Roura, Santiago [2 ,3 ]
Galvez-Monton, Carolina [2 ]
Maria Pujal, Josep [4 ]
Aran, Gemma [5 ]
Sanjurjo, Lucia [5 ]
la Franquesa, Marcel [1 ,6 ]
Sarrias, Maria-Rosa [5 ]
Bayes-Genis, Antoni [2 ,7 ,8 ]
Borras, Francesc E. [6 ]
机构
[1] Hlth Sci Res Inst Germans Trias & Pujol, REMAR IVECAT Grp, Can Ruti Campus, Badalona, Spain
[2] Hlth Sci Res Inst Germans Trias & Pujol, ICREC Res Program, Can Ruti Campus, Badalona, Spain
[3] Ctr Regenerat Med Barcelona, Barcelona, Spain
[4] Parc Cient & Tecnol Univ Girona, Cell Proc Lab, Girona, Spain
[5] Hlth Sci Res Inst Germans Trias & Pujol, Innate Immun Grp, Badalona, Spain
[6] Germans Trias & Pujol Univ Hosp, Serv Nephrol, Badalona, Spain
[7] Germans Trias & Pujol Univ Hosp, Serv Cardiol, Badalona, Spain
[8] UAB, Dept Med, Barcelona, Spain
关键词
nanosized extracellular vesicles; exosomes; inflammation; umbilical cord mesenchymal stem cell; immunomodulation; size exclusion chromatography; MESENCHYMAL STEM-CELLS; STROMAL CELLS; BONE-MARROW; INTERFERON-GAMMA; PROTEOMIC ANALYSIS; CHROMATOGRAPHY; ACTIVATION; EXOSOMES; THERAPY; INDUCE;
D O I
10.7150/thno.16154
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Undesired immune responses have drastically hampered outcomes after allogeneic organ transplantation and cell therapy, and also lead to inflammatory diseases and autoimmunity. Umbilical cord mesenchymal stem cells (UCMSCs) have powerful regenerative and immunomodulatory potential, and their secreted extracellular vesicles (EVs) are envisaged as a promising natural source of nanoparticles to increase outcomes in organ transplantation and control inflammatory diseases. However, poor EV preparations containing highly-abundant soluble proteins may mask genuine vesicular-associated functions and provide misleading data. Here, we used Size-Exclusion Chromatography (SEC) to successfully isolate EVs from UCMSCs-conditioned medium. These vesicles were defined as positive for CD9, CD63, CD73 and CD90, and their size and morphology characterized by NTA and cryo-EM. Their immunomodulatory potential was determined in polyclonal T cell proliferation assays, analysis of cytokine profiles and in the skewing of monocyte polarization. In sharp contrast to the non-EV containing fractions, to the complete conditioned medium and to ultracentrifuged pellet, SEC-purified EVs from UCMSCs inhibited T cell proliferation, resembling the effect of parental UCMSCs. Moreover, while SEC-EVs did not induce cytokine response, the non-EV fractions, conditioned medium and ultracentrifuged pellet promoted the secretion of pro-inflammatory cytokines by polyclonally stimulated T cells and supported Th17 polarization. In contrast, EVs did not induce monocyte polarization, but the non-EV fraction induced CD163 and CD206 expression and TNF-alpha production in monocytes. These findings increase the growing evidence confirming that EVs are an active component of MSC's paracrine immunosuppressive function and affirm their potential for therapeutics in nanomedicine. In addition, our results highlight the importance of well-purified and defined preparations of MSC-derived EVs to achieve the immunosuppressive effect.
引用
收藏
页码:270 / 284
页数:15
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