Stem Cell Reviews and Reports

, Volume 8, Issue 4, pp 1275–1281 | Cite as

Telomeres and Tissue Engineering: The Potential Roles of TERT in VEGF-mediated Angiogenesis

  • Fernando P. Hartwig
  • Fernanda Nedel
  • Tiago V. Collares
  • Sandra B. C. Tarquinio
  • Jacques E. Nör
  • Flávio F. Demarco
Article

Abstract

Telomeres are protective structures located at the end of eukaryotic chromosomes which are shortened after each cell division, leading to senescence. Telomerase activity prevents telomere shortening by reverse transcription catalyzed by the subunit called TERT (telomerase reverse transcriptase). TERT expression has shown interesting cellular properties, which may be appealing for tissue engineering, such as the enhancement of cell proliferation and differentiation abilities in vitro. Despite some evidence for playing these roles in VEGF (vascular endothelial growth factor)-mediated angiogenesis, it is still unclear whether TERT can contribute to this essential event to generate functional organs. This review suggests a hypothesis that TERT and VEGF potentially regulates the transcriptional expression of each other, which would give new perspectives in the roles of telomerase in regulating several cellular processes, and also contributing for a better comprehension of the molecular mechanisms underlying VEGF signaling (both paracrine and autocrine). In general, based on the literature revised, it is possible to conclude that TERT is a potential VEGF enhancer; however, it is necessary to elaborate methodological approaches to explore this potential and to assess the potential benefits on tissue engineering approaches.

Keywords

TERT VEGF Endothelial cells Differentiation Proliferation 

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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Fernando P. Hartwig
    • 1
  • Fernanda Nedel
    • 2
  • Tiago V. Collares
    • 1
  • Sandra B. C. Tarquinio
    • 3
  • Jacques E. Nör
    • 4
  • Flávio F. Demarco
    • 5
  1. 1.Biotechnology Unit, Technology Development CenterFederal University of PelotasRio Grande do SulBrazil
  2. 2.Post-Graduate Program in Dentistry and Biotechnology Unit, Technology Development CenterFederal University of PelotasRio Grande do SulBrazil
  3. 3.Post-Graduate Program in DentistryFederal University of PelotasRio Grande do SulBrazil
  4. 4.Department of Cardiology, Restorative Sciences, and EndodonticsUniversity of MichiganAnn ArborUSA
  5. 5.Post-Graduate Program in DentistryFederal University of PelotasRio Grande do SulBrazil

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