Generation of Powerful Human Tolerogenic Dendritic Cells by Lentiviral-Mediated IL-10 Gene Transfer

Michela Comi, Giada Amodio, Laura Passeri, Marta Fortunato, Francesca Romana Santoni de Sio, Grazia Andolfi, Anna Kajaste-Rudnitski, Fabio Russo, Luca Cesana, Silvia Gregori

Research output: Contribution to journalArticlepeer-review

Abstract

The prominent role of dendritic cells (DC) in promoting tolerance and the development of methods to generate clinical grade products allowed the clinical application of tolerogenic DC (tolDC)-based therapies for controlling unwanted immune responses. We established an efficient method to generate tolerogenic human DC, producing supra-physiological levels of IL-10, by genetically engineering monocyte-derived DC with a bidirectional Lentiviral Vector (bdLV) encoding for IL-10 and a marker gene. DCIL−10 are mature DC, modulate T cell responses, promote T regulatory cells, and are phenotypically and functionally stable upon stimulation. Adoptive transfer of human DCIL−10 in a humanized mouse model dampens allogeneic T cell recall responses, while murine DCIL−10 delays acute graft-vs.-host disease in mice. Our report outlines an efficient method to transduce human myeloid cells with large-size LV and shows that stable over-expression of IL-10 generates an effective cell product for future clinical applications in the contest of allogeneic transplantation.

Original languageEnglish
Article number1260
JournalFrontiers in Immunology
Volume11
DOIs
Publication statusPublished - Jun 30 2020

Keywords

  • allogeneic transplantation
  • cell therapy
  • dendritic cells
  • IL-10
  • immune tolerance

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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