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Cell and tissue research2013; 352(3); 509-521; doi: 10.1007/s00441-013-1574-1

Tenogenic differentiation of equine adipose-tissue-derived stem cells under the influence of tensile strain, growth differentiation factors and various oxygen tensions.

Abstract: Mesenchymal stem cells have become extremely interesting for regenerative medicine and tissue engineering in the horse. Stem cell therapy has been proven to be a powerful and successful instrument, in particular for the healing of tendon lesions. We pre-differentiated equine adipose-tissue-derived stem cells (ASCs) in a collagen I gel scaffold by applying tensile strain, growth differentiation factors (GDFs) and various oxygen tensions in order to determine the optimal conditions for in vitro differentiation toward the tenogenic lineage. We compared the influence of 3% versus 21% oxygen tension, the use of GDF 5, GDF 6 and GDF 7 and the application of uniaxial tensile strain versus no mechanical stimulation on differentiation results as evaluated by cell morphology and by the expression of the tendon-relevant genes collagen I, collagen III, cartilage oligomeric matrix protein and scleraxis. The best results were obtained with an oxygen tension of 21%, tensile stimulation and supplementation with GDF 5 or GDF 7. This approach raises the hope that the in vivo application of pre-differentiated stem cells will improve healing and recovery time in comparison with treatment involving undifferentiated stem cells.
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Publication Date: 2013-02-22 PubMed ID: 23430474DOI: 10.1007/s00441-013-1574-1Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This study explores optimal conditions for differentiating stem cells extracted from horse fat tissue suited for treating tendon injuries. It found that best results were achieved by subjecting the cells to 21% oxygen tension, physical stretching, and bolstering with certain growth differentiation factors.

Objective and Scope of the Research

The research investigates a more effective stem cell-based therapy for tendon injuries in horses. Specifically, the researchers attempted to determine the best conditions for differentiating equine adipose-tissue-derived stem cells (ASCs), aiming to develop a tailored treatment protocol for repairing tendon lesions.

Methodology

  • The team extracted mesenchymal stem cells (a type of stem cell that can differentiate into multiple cell types) from horse adipose tissue (fat).
  • These adipose-tissue-derived stem cells (ASCs) were pre-differentiated in a collagen I gel scaffold, a substance that provides support for cell growth and differentiation.
  • Differentiation conditions were altered using varying levels of oxygen tension, specific Growth Differentiation Factors (GDFs), and the application of uniaxial tensile strain (physical stretching).

Variable Testing

  • The effect of oxygen tension was tested with concentrations of 3% and 21%.
  • Growth Differentiation Factors used were GDF 5, 6, and 7, biological substances that regulate cellular activities, including differentiation.
  • Half the stem cells were subjected to uniaxial tensile strain while the other half did not receive any mechanical stimulation.

Evaluating Results

  • The ability of ASCs to differentiate into tenocytes (tendon cells) under different conditions was assessed by evaluating cellular morphology and examining the expression of tendon-relevant genes such as collagen I, collagen III, cartilage oligomeric matrix protein, and scleraxis.
  • The experiment concluded with optimal differentiation achieved with an oxygen tension of 21%, tensile stimulation, and supplementation with GDF 5 or GDF 7.

Significance and Implications

  • This research offers a potentially improved healing method for horses with tendon lesions by utilising pre-differentiated, rather than undifferentiated, stem cells for therapy.
  • Understanding the influence of environmental conditions on stem cell differentiation can direct the further development of more efficient, targeted cell-based therapies in veterinary medicine.

Cite This Article

APA
Raabe O, Shell K, Fietz D, Freitag C, Ohrndorf A, Christ HJ, Wenisch S, Arnhold S. (2013). Tenogenic differentiation of equine adipose-tissue-derived stem cells under the influence of tensile strain, growth differentiation factors and various oxygen tensions. Cell Tissue Res, 352(3), 509-521. https://doi.org/10.1007/s00441-013-1574-1

Publication

Cell and tissue research
ISSN: 1432-0878
NlmUniqueID: 0417625
Country: Germany
Language: English
Volume: 352
Issue: 3
Pages: 509-521

Researcher Affiliations

Raabe, Oksana
  • Institute of Veterinary Anatomy, Histology, and Embryology, Justus-Liebig University of Giessen, Frankfurterstrasse 98, 35392, Giessen, Germany. Oksana.Raabe@vetmed.uni-giessen.de
Shell, K
    Fietz, D
      Freitag, C
        Ohrndorf, A
          Christ, H J
            Wenisch, S
              Arnhold, S

                MeSH Terms

                • Adipose Tissue / cytology
                • Animals
                • Biomarkers / metabolism
                • Bioreactors
                • Cell Communication / drug effects
                • Cell Differentiation / drug effects
                • Cell Lineage / drug effects
                • Cell Shape / drug effects
                • Collagen Type I / pharmacology
                • Gels
                • Gene Expression Regulation / drug effects
                • Growth Differentiation Factors / pharmacology
                • Horses
                • Immunohistochemistry
                • Intercellular Junctions / drug effects
                • Intercellular Junctions / metabolism
                • Oxygen / pharmacology
                • RNA, Messenger / genetics
                • RNA, Messenger / metabolism
                • Rats
                • Stem Cells / cytology
                • Stem Cells / drug effects
                • Stem Cells / ultrastructure
                • Tendons / cytology
                • Tensile Strength / drug effects
                • Tissue Scaffolds

                Citations

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