@article {19305, title = {The effects of platelet lysate patches on the activity of tendon-derived cells}, journal = {Acta Biomaterialia}, year = {2018}, month = {2018-01-16 00:00:00}, abstract = {

Platelet-derived biomaterials are widely explored as cost-effective sources of therapeutic factors, holding a strong potential for endogenous regenerative medicine. Particularly for tendon repair, treatment approaches that shift the injury environment are explored to accelerate tendon regeneration. Herein, genipin-crosslinked platelet lysate (PL) patches are proposed for the delivery of human-derived therapeutic factors in patch augmentation strategies aiming at tendon repair. Developed PL patches exhibited a controlled release profile of PL proteins, including bFGF and PDGF-BB. Additionally, PL patches exhibited an antibacterial effect by preventing the adhesion, proliferation and biofilm formation by\ S. aureus, a common pathogen in orthopaedic surgical site infections. Furthermore, these patches supported the activity of human tendon-derived cells (hTDCs). Cells were able to proliferate over time and an up-regulation of tenogenic genes (SCX,\ COL1A1\ and\ TNC) was observed, suggesting that PL patches may modify the behavior of hTDCs. Accordingly, hTDCs deposited tendon-related extracellular matrix proteins, namely collagen type I and tenascin C.

In summary, PL patches can act as a reservoir of biomolecules derived from PL and support the activity of native tendon cells, being proposed as bioinstructive patches for tendon regeneration.

}, keywords = {Antibacterial efficacy, controlled release, Endogenous regeneration, tendon patch, Tenogenic genes}, issn = {1742-7061}, doi = {10.1016/j.actbio.2018.01.006}, url = {https://www.sciencedirect.com/science/article/pii/S1742706118300175}, author = {Costa-Almeida, R. and Franco, A. R. and Pesqueira, T. and Oliveira, M. B. and Babo, P. S. and Leonor, I. B. and Mano, J. F. and Reis, R. L. and Gomes, M. E.} }