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J Oral Maxillofac Surg. 2012 Aug;70(8):e469-76. doi: 10.1016/j.joms.2012.03.021.

Osteogenic potential of human bone marrow-derived mesenchymal stromal cells cultured in autologous serum: a preliminary study.

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  • 1Department of Plastic and Aesthetic Surgery, School of Medicine, Kitasato University, Kanagawa, Japan.

Abstract

PURPOSE:

As part of the authors' research on potential osteogenesis by filling bone defects with human bone marrow-derived mesenchymal stromal cells (hBM-MSCs) in patients with cleft lip and palate, they examined the cytoproliferative potential and cytobiological activity of hBM-MSCs in vitro and their osteogenic potential in vivo without performing osteoinduction.

MATERIALS AND METHODS:

The hBM-MSCs were collected from iliac cancellous bone and then used in primary culture, followed by 2 subcultures using an autologous serum (AS)-containing medium and a fetal bovine serum (FBS)-containing medium. Cytoproliferative potential and cytobiological activity as expressed by bone markers (alkaline phosphatase and osteocalcin) in hBM-MSCs cultured in the AS-containing medium (AS-cultured hBM-MSCs) and the FBS-containing medium (FBS-cultured hBM-MSCs) were examined in vitro, and the osteogenic potential of AS- and FBS-cultured hBM-MSCs was examined in mice.

RESULTS:

On day 6 of the second subculture, the number of hBM-MSCs per milliliter of specimen from 8 pediatric patients was significantly larger (P < .05) in FBS-cultured compared with AS-cultured hBM-MSCs. The alkaline phosphatase activity of hBM-MSCs was significantly greater (P < .05) when cultured in the AS-containing medium compared with the FBS-containing medium. The in vivo study showed the formation of an osteoid-like matrix rather than definite bone tissue.

CONCLUSIONS:

1) FBS is appropriate for the cytoproliferation of hBM-MSCs; 2) the AS-containing medium is likely to have a good possibility of inducing the differentiation of hBM-MSCs; and 3) AS-cultured hBM-MSCs contain a group of cells that spontaneously differentiate into an osteoid-like matrix without performing osteoinduction.

Copyright © 2012 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.

PMID:
22793961
[PubMed - indexed for MEDLINE]
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