The vascular functional and structural integrity is essential for the maintenance of the whole organism and it has been demonstrated that different types of vascular progenitor cells resident in the vessel wall play an important role in this process. The purpose of the present research was to observe the effect of tributyltin (TBT), a risk factor for vascular disorders, on porcine Aortic Vascular Precursor Cells (pAVPCs) in term of cytotoxicity, gene expression profile, functionality and differentiation potential. We have demonstrated that pAVPCs morphology deeply changed following TBT treatment. After 48h a cytotoxic effect has been detected and Annexin binding assay demonstrated that TBT induced apoptosis. The transcriptional profile of characteristic pericyte markers has been altered: TBT 10nM substantially induced alpha-SMA, while, TBT 500nM determined a significant reduction of all pericyte markers. IL-6 protein was detected in the medium of pAVPCs treated with TBT at both doses studied and with a dose response. TBT has interfered with normal pAVPCs functionality preventing their ability to support a capillary-like network. In addition TBT has determined an increase of pAVPCs adipogenic differentiation. In conclusion in the present paper we have demonstrated that TBT alters the vascular stem cells in term of structure, functionality and differentiating capability, therefore effects of TBT in blood should be deeply explored to understand the potential vascular risk associated with the alteration of vascular stem cells physiology.

Deleterious effects of tributyltin on porcine vascular stem cells physiology

BERNARDINI, CHIARA;ZANNONI, AUGUSTA;BERTOCCHI, MARTINA;BIANCHI, FRANCESCA;SALAROLI, ROBERTA;BACCI, MARIA LAURA;VENTRELLA, VITTORIA;FORNI, MONICA
2016

Abstract

The vascular functional and structural integrity is essential for the maintenance of the whole organism and it has been demonstrated that different types of vascular progenitor cells resident in the vessel wall play an important role in this process. The purpose of the present research was to observe the effect of tributyltin (TBT), a risk factor for vascular disorders, on porcine Aortic Vascular Precursor Cells (pAVPCs) in term of cytotoxicity, gene expression profile, functionality and differentiation potential. We have demonstrated that pAVPCs morphology deeply changed following TBT treatment. After 48h a cytotoxic effect has been detected and Annexin binding assay demonstrated that TBT induced apoptosis. The transcriptional profile of characteristic pericyte markers has been altered: TBT 10nM substantially induced alpha-SMA, while, TBT 500nM determined a significant reduction of all pericyte markers. IL-6 protein was detected in the medium of pAVPCs treated with TBT at both doses studied and with a dose response. TBT has interfered with normal pAVPCs functionality preventing their ability to support a capillary-like network. In addition TBT has determined an increase of pAVPCs adipogenic differentiation. In conclusion in the present paper we have demonstrated that TBT alters the vascular stem cells in term of structure, functionality and differentiating capability, therefore effects of TBT in blood should be deeply explored to understand the potential vascular risk associated with the alteration of vascular stem cells physiology.
Bernardini Chiara; Zannoni Augusta; Bertocchi Martina; Bianchi Francesca; Salaroli Roberta; Botelho Giuliana; Bacci Maria Laura; Ventrella Vittoria; Forni Monica
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/538762
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 4
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 4
social impact