AI Article Synopsis
- The study focuses on tissue non-specific alkaline phosphatase (TNAP) as a marker for identifying bone marrow stromal cells (BMSCs) with high mineralizing potential in dental pulp.
- Researchers found that human dental pulp stromal cells (hDPSCs) consistently express TNAP and co-express other BMSC markers like CD73 and CD90.
- Results indicated that TNAP expression increases with longer culture durations and higher cell densities, making TNAP a promising marker for selecting hDPSCs in regenerative therapies involving mineralized tissue.
Article Abstract
The cell surface hydrolase tissue non-specific alkaline phosphatase (TNAP) (also known as MSCA-1) is used to identify a sub-population of bone marrow stromal cells (BMSCs) with high mineralising potential and is found on subsets of cells within the dental pulp. We aim to determine whether TNAP is co-expressed by human dental pulp stromal cells (hDPSCs) alongside a range of BMSC markers, whether this is an active form of the enzyme and the effects of culture duration and cell density on its expression. Cells from primary dental pulp and culture expanded hDPSCs expressed TNAP. Subsequent analyses revealed persistent TNAP expression and co-expression with BMSC markers such as CD73 and CD90. Flow cytometry and biochemical assays showed that increased culture durations and cell densities enhanced TNAP expression by hDPSCs. Arresting the hDPSC cell cycle also increased TNAP expression. These data confirm that TNAP is co-expressed by hDPSCs together with other BMSC markers and show that cell density affects TNAP expression levels. We conclude that TNAP is a potentially useful marker for hDPSC selection especially for uses in mineralised tissue regenerative therapies.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4529449 | PMC |
| http://dx.doi.org/10.1007/s00441-014-2106-3 | DOI Listing |
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