Abstract:
:Mesenchymal stromal cells (MSCs) as a pharmaceutical for ailments characterized by pathogenic autoimmune, alloimmune and inflammatory processes now cover the spectrum of early- to late-phase clinical trials in both industry and academic sponsored studies. There is a broad consensus that despite different tissue sourcing and varied culture expansion protocols, human MSC-like cell products likely share fundamental mechanisms of action mediating their anti-inflammatory and tissue repair functionalities. Identification of functional markers of potency and reduction to practice of standardized, easily deployable methods of measurements of such would benefit the field. This would satisfy both mechanistic research as well as development of release potency assays to meet Regulatory Authority requirements for conduct of advanced clinical studies and their eventual registration. In response to this unmet need, the International Society for Cellular Therapy (ISCT) addressed the issue at an international workshop in May 2015 as part of the 21st ISCT annual meeting in Las Vegas. The scope of the workshop was focused on discussing potency assays germane to immunomodulation by MSC-like products in clinical indications targeting immune disorders. We here provide consensus perspective arising from this forum. We propose that focused analysis of selected MSC markers robustly deployed by in vitro licensing and metricized with a matrix of assays should be responsive to requirements from Regulatory Authorities. Workshop participants identified three preferred analytic methods that could inform a matrix assay approach: quantitative RNA analysis of selected gene products; flow cytometry analysis of functionally relevant surface markers and protein-based assay of secretome. We also advocate that potency assays acceptable to the Regulatory Authorities be rendered publicly accessible in an "open-access" manner, such as through publication or database collection.
journal_name
Cytotherapyjournal_title
Cytotherapyauthors
Galipeau J,Krampera M,Barrett J,Dazzi F,Deans RJ,DeBruijn J,Dominici M,Fibbe WE,Gee AP,Gimble JM,Hematti P,Koh MB,LeBlanc K,Martin I,McNiece IK,Mendicino M,Oh S,Ortiz L,Phinney DG,Planat V,Shi Y,Stroncek DF,Vidoi
10.1016/j.jcyt.2015.11.008subject
Has Abstractpub_date
2016-02-01 00:00:00pages
151-9issue
2eissn
1465-3249issn
1477-2566pii
S1465-3249(15)01122-6journal_volume
18pub_type
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