The effects of autologous platelet gel on inflammatory cytokine response in human peripheral blood mononuclear cells.
The potential therapeutic value and versatility of platelet-derived products has recently stimulated the research and interest in the field of regenerative medicine. Platelet gels (PG), generated by thrombin-activated platelets, represent a new biotechnology for stimulation and acceleration of tissue healing and regeneration. However, despite the diffused and successful use of PG in clinical practice, a more detailed knowledge of the cellular and molecular mechanisms involved is required. In the present study, we show that human peripheral blood mononuclear cells (PBMC) co-cultured with PG, in the presence of the inflammatory activator lipopolysaccharide, secreted higher amounts of pro-inflammatory and pro-angiogenic cytokines, such as interleukin (IL)-1beta, IL-6 and IL-8. In contrast, the release of the anti-angiogenic cytokines interferon-gamma and IL-12 was significantly reduced. In addition the production of the anti-inflammatory cytokine IL-10 was not affected by PG. Finally, hypoxia, a common feature of the healing tissue, potentiated the effects exerted by PG on the release of IL-1beta by PBMC. In conclusion, PG treatment reveals a unique capacity of articulating a pro-inflammatory and pro-angiogenic cytokine profile in human PBMC, which may partially explain the clinical success of PG application in a wide range of diseases.
Naldini
Antonella
A
Department of Physiology, University of Siena, Italy. Naldini@Unisi.it
Morena
Emilia
E
Fimiani
Michele
M
Campoccia
Giuseppe
G
Fossombroni
Vittorio
V
Carraro
Fabio
F
D001691:Biological Therapy / Q000379:methods*; D001792:Blood Platelets; D018920:Coculture Techniques; D016207:Cytokines / Q000378:metabolism*; D006801:Humans; D000860:Hypoxia; D007249:Inflammation; D007963:Leukocytes, Mononuclear / Q000276:immunology*; D008070:Lipopolysaccharides / Q000494:pharmacology; D018919:Neovascularization, Physiologic; D012038:Regeneration; D014945:Wound Healing
D016207:Cytokines; D008070:Lipopolysaccharides