Skewing effect of sulprostone on dendritic cell maturation compared with dinoprostone

Jenny Bulgarelli, Laura Fiammenghi, Serena Cassan, Anna Maria Granato, Massimiliano Petrini, Elena Pancisi, Valentina Soldati, Francesco De Rosa, Laura Ridolfi, Angela Riccobon, Massimo Guidoboni

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Dendritic cells (DCs) are the most efficient antigen-presenting cells and act at the center of the immune system owing to their ability to control both immune tolerance and immunity. In cancer immunotherapy, DCs play a key role in the regulation of the immune response against tumors and can be generated ex vivo with different cytokine cocktails. Methods. We evaluated the feasibility of dinoprostone (PGE2) replacement with the molecular analog sulprostone, in our good manufacturing practice (GMP) protocol for the generation of DC-based cancer vaccine. We characterized the phenotype and the function of DCs matured in the presence of sulprostone as a potential substitute of dinoprostone in the pro-inflammatory maturation cocktail consisting of tumor necrosis factor alpha (TNF-α), interleukin-1 beta (IL-1β) and IL-6. Results. We found that sulprostone invariably reduces the recovery, but does not significantly modify the viability and the purity of DCs. The presence of sulprostone in the maturation cocktail increases the adhesion of single cells and of clusters of DCs to the flask, making them more similar to their immature counterpart in terms of adhesion and spreading proprieties. Moreover, we observed that sulprostone impairs the expression of co-stimulatory molecules and the spontaneous as well as the directed migration capacity of DCs. Discussion: These findings underscore that the synthetic analog sulprostone strongly reduces the functional quality of DCs, thus cannot replace dinoprostone in the maturation cocktail of monocyte-derived DCs.

Original languageEnglish
Pages (from-to)851-860
Number of pages10
JournalCytotherapy
Volume20
Issue number6
DOIs
Publication statusPublished - Jun 1 2018

Keywords

  • cancer immunotherapy
  • dendritic cell vaccine
  • dinoprostone
  • sulprostone

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Oncology
  • Genetics(clinical)
  • Cell Biology
  • Transplantation
  • Cancer Research

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