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Stem Cells Transl Med. 2017 Apr;6(4):1202-1206. doi: 10.1002/sctm.16-0356. Epub 2017 Jan 3.

Identification of Potential Plasma microRNA Stratification Biomarkers for Response to Allogeneic Adipose-Derived Mesenchymal Stem Cells in Rheumatoid Arthritis.

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Sistemic Ltd., West of Scotland Science Park, Kelvin Campus, Glasgow, G20 0SP, United Kingdom.
TiGenix SAU, Calle Marconi, Parque Tecnológico de Madrid, Tres Cantos, 28760, Madrid, Spain.
TiGenix NV, RomeinseStraat 12/2, 3001, Leuven, Belgium.


The ability to identify and stratify patients that will respond to specific therapies has been transformational in a number of disease areas, particularly oncology. It is anticipated that this will also be the case for cell-based therapies, particularly in complex and heterogeneous diseases such as rheumatoid arthritis (RA). Recently, clinical results with expanded allogenic adipose-derived mesenchymal stem cells (eASCs) have indicated clinical efficacy in highly refractory RA patients. In this study, we set out to determine if circulating microRNAs (miRNAs) could be identified as potential biomarkers associated with response to eASCs in these RA patients. The miRNA expression profiles of pre-treatment plasma samples from responder and nonresponder patients were determined using microarrays. Ten miRNAs were identified that were differentially expressed in the responder group as compared to the nonresponder group. To confirm the differential expression of these 10 miRNA biomarkers, they were further assayed by quantitative reverse-transcriptase polymerase chain reaction (QRT-PCR). From this analysis, three miRNAs, miR-26b-5p, miR-487b-3p and miR-495-3p, were confirmed as being statistically significantly upregulated in the responder group as compared with the nonresponder group. Receiver operating characteristic analysis confirmed their diagnostic potential. These miRNAs could represent novel candidate stratification biomarkers associated with RA patient response to eASCs and are worthy of further clinical validation. Stem Cells Translational Medicine 2017;6:1202-1206.


Adipose mesenchymal stem cells; Cell-based therapy; MicroRNA; Plasma stratification biomarkers; Rheumatoid arthritis

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