Cytotherapy. 2016 Jun;18(6):729-39. doi: 10.1016/j.jcyt.2016.03.291.

Rapid isolation of bone marrow mesenchymal stromal cells using integrated centrifuge-based technology. Meppelink AM1, Wang XH2, Bradica G3, Barron K4, Hiltz K4, Liu XH3, Goldman SM3, Vacanti JP5, Keating A2, Hoganson DM6. Author information - 1Division of Plastic and Reconstructive Surgery, Department of Surgery, Massachusetts General Hospital, Boston, MA, USA. - 2Cell Therapy Program, Princess Margaret Hospital, University Health Network, Toronto, Canada.

- 3DSM Biomedical, Exton, PA, USA. - 4Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO. - 5Center for Regenerative Medicine, Department of Surgery, Massachusetts General Hospital, Boston, MA, USA.

- 6Department of Cardiac Surgery, Boston Children's Hospital, Boston, MA. Electronic address: david.hoganson@cardio.chboston.org.

Abstract BACKGROUND AIMS: The use of bone marrow-derived mesenchymal stromal cells (MSCs) in cell-based therapies is currently being developed for a number of diseases. Thus far, the clinical results have been inconclusive and variable, in part because of the variety of cell isolation procedures and culture conditions used in each study. A new isolation technique that streamlines the method of concentration and demands less time and attention could provide clinical and economic advantages compared with current methodologies. In this study, we evaluated the concentrating capability of an integrated centrifuge-based technology compared with standard Ficoll isolation. METHODS: MSCs were concentrated from bone marrow aspirate using the new device and the Ficoll method. The isolation capabilities of the device and the growth characteristics, secretome production, and differentiation capacity of the derived cells were determined. RESULTS: The new MSC isolation device concentrated the bone marrow in 90 seconds and resulted in a mononuclear cell yield 10-fold higher and with a twofold increase in cell retention compared with Ficoll. The cells isolated using the device were shown to exhibit similar morphology and functional activity as assessed by growth curves and secretome production compared to the Ficoll-isolated cells. The surface marker and trilineage differentiation profile of the device-isolated cells was consistent with the known profile of MSCs. DISCUSSION:

The faster time to isolation and greater cell yield of the integrated centrifuge-based technology may make this an

improved approach for MSC isolation from bone marrow aspirates.