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Phenotypical and Functional Evaluation of Dendritic Cells After Exosomal Delivery of Mirna-155 Publisher Pubmed



Asadirad A1 ; Hashemi SM1, 4 ; Baghaei K2 ; Ghanbarian H3, 4, 5 ; Mortaz E1, 6 ; Zali MR7 ; Amani D1
Authors
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Authors Affiliations
  1. 1. Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Basic and Molecular Epidemiology of Gastrointestinal Disorder Research Center, Research Institute for Gastroenterology and Liver Disease, Shahid Beheshti University of Medical Science, Tehran, Iran
  3. 3. Cellular and Molecular Biology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  5. 5. Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  6. 6. Clinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran
  7. 7. Gastroenterology and Liver Diseases Research center, Research institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Source: Life Sciences Published:2019


Abstract

Aims: The clinical efficiency of dendritic cell (DC) therapy needs to be improved. Exosomes, as membrane nano-vesicles, carry bio-macromolecules and play essential roles in intercellular crosstalk. Here, it is proposed that tumor cell-derived exosomes could function as vehicles to deliver exogenous miRNA-155 into DCs, for simultaneous miRNA delivery and antigen priming of DCs. Following optimization of the miRNA-155 delivery, the effect of exogenous miRNA-155 overexpression on DCs is evaluated. Main methods: For this purpose, exogenous miRNA-155 was electroporated with various voltages (0.100, 0.200, and 0.300 kV) into tumor cell-derived exosomes with various concentrations, and then DCs were treated with miRNA-155 loaded exosomes. To assess the effect of miRNA-155 loaded exosomes on DCs, the expression levels of IL12p70, IFN-γ and IL10 in culture supernatants were measured by ELISA. Then, the expression profiles of DC surface markers, including CD11C, MHCII (I/A-I/E), CD86, CD40, and CD83 were investigated by flow cytometry. Key findings: Concerning the results, exogenous miRNA-155 can be successfully inserted into tumor cell derived exosomes. Loading conditions for tumor cell-derived exosomes were enhanced for utilization as vehicles to deliver miRNA-155 into DCs. Analysis of the surface molecule revealed that miRNA-155 can increase the expression levels of MHCII (I/A-I/E), CD86, CD40, and CD83. ELISA analysis indicates that miRNA-155 can significantly increase, the levels of IL12p70, IFN-γ and IL10. Significance: Finally, it can be stated that miRNA-155 could be a candidate for dendritic cell maturation. This method can be applied in the modification of target cells in in vitro studies. © 2019
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