Transcriptome profiles of isolated murine Achilles tendon proper‐ and peritenon‐derived progenitor cells

Transcriptome profiles of isolated murine Achilles tendon proper‐ and peritenon‐derived progenitor cells

ABSTRACT Progenitor cells of the tendon proper and peritenon have unique properties that could impact their utilization in tendon repair strategies. While a few markers have been found to aid in distinguishing progenitors cells from each region, there is great value in identifying more markers. In t...

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Bibliographic Details
Published in:Journal of orthopaedic research Vol. 37; no. 6; pp. 1409 - 1418
Main Authors: Mienaltowski, Michael J., Cánovas, Angela, Fates, Valerie A., Hampton, Angela R., Pechanec, Monica Y., Islas‐Trejo, Alma, Medrano, Juan F.
Format: Journal Article
Language:English
Published: United States 01-06-2019
Subjects:
Achilles tendon
Achilles Tendon - cytology
Animals
Male
markers
Mice
mouse
Real-Time Polymerase Chain Reaction
Stem Cells - metabolism
stem/progenitors
Tendons - cytology
Transcriptome
mouse
Achilles tendon
markers
stem/progenitors
transcriptome
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Summary:ABSTRACT Progenitor cells of the tendon proper and peritenon have unique properties that could impact their utilization in tendon repair strategies. While a few markers have been found to aid in distinguishing progenitors cells from each region, there is great value in identifying more markers. In this study, we hypothesized that RNAseq could be used to improve our understanding of those markers that define these cell types. Transcriptome profiles were generated for pools of mouse Achilles tendon progenitor cells from both regions and catalogues of potential markers were generated. Moreover, common (e.g., glycoprotein, signaling, and proteinaceous extracellular matrix) and unique (e.g., cartilage development versus angiogenesis and muscle contraction) biological processes and molecular functions were described for progenitors from each region. Real‐time quantitative PCR of a subset of genes was used to gain insight into the heterogeneity amongst individual progenitor colonies from each region. Markers like Scx, Mkx, Thbs4, and Wnt10a were consistently able to distinguish tendon proper progenitors from peritenon progenitors; expression variability for other genes suggested greater cell type complexity for potential peritenon progenitor markers. This is the first effort to define Achilles tendon progenitor markers by region. Further efforts to investigate the value of these cataloged markers are required by screening more individual colonies of progenitors for more markers. Clinical Significance: Findings from this study advance efforts in the discernment of cell type specific markers for tendon proper and peritenon progenitor cells; insight into marker sets could improve tracking and sorting strategies for these cells for future therapeutic strategies. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 37:1409–1418, 2019.
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ISSN:0736-0266
1554-527X
DOI:10.1002/jor.24076