Comparative evaluation of the angiogenic potential of hypoxia preconditioned blood-derived secretomes and platelet-rich plasma: An in vitro analysis

Philipp Moog, Katharina Kirchhoff, Sanjar Bekeran, Anna Theresa Bauer, Sarah von Isenburg, Ulf Dornseifer, Hans Günther Machens, Arndt F. Schilling, Ektoras Hadjipanayi

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Blood-derived factor preparations are being clinically employed as tools for promoting tissue repair and regeneration. Here we set out to characterize the in vitro angiogenic potential of two types of frequently used autologous blood-derived secretomes: platelet-rich plasma (PRP) and hypoxia preconditioned plasma (HPP)/serum (HPS). The concentration of key pro-angiogenic (VEGF) and anti-angiogenic (TSP-1, PF-4) protein factors in these secretomes was analyzed via ELISA, while their ability to induce microvessel formation and sprouting was examined in endothelial cell and aortic ring cultures, respectively. We found higher concentrations of VEGF in PRP and HPP/HPS compared to normal plasma and serum. This correlated with improved induction of microvessel formation by PRP and HPP/HPS. HPP had a significantly lower TSP-1 and PF-4 concentration than PRP and HPS. PRP and HPP/HPS appeared to induce similar levels of microvessel sprouting; however, the length of these sprouts was greater in HPP/HPS than in PRP cultures. A bell-shaped angiogenic response profile was observed with increasing HPP/HPS dilutions, with peak values significantly exceeding the PRP response. Our findings demonstrate that optimization of peripheral blood cell-derived angiogenic factor signalling through hypoxic preconditioning offers an improved alternative to simple platelet concentration and release of growth factors pre-stored in platelets.

Original languageEnglish
Article number16
JournalBiomedicines
Volume8
Issue number1
DOIs
StatePublished - 1 Jan 2020
Externally publishedYes

Keywords

  • Angiogenesis
  • Blood-derived therapy
  • Hypoxia
  • Hypoxia preconditioned plasma
  • Hypoxia preconditioned serum
  • Peripheral blood cells
  • Platelet rich plasma (PRP)

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