PMID- 33228747 OWN - NLM STAT- MEDLINE DCOM- 20210803 LR - 20210803 IS - 1756-9966 (Electronic) IS - 0392-9078 (Print) IS - 0392-9078 (Linking) VI - 39 IP - 1 DP - 2020 Nov 23 TI - Dexosomes as a cell-free vaccine for cancer immunotherapy. PG - 258 LID - 10.1186/s13046-020-01781-x [doi] LID - 258 AB - Dendritic cells (DCs) secrete vast quantities of exosomes termed as dexosomes. Dexosomes are symmetric nanoscale heat-stable vesicles that consist of a lipid bilayer displaying a characteristic series of lipid and protein molecules. They include tetraspanins and all established proteins for presenting antigenic material such as the major histocompatibility complex class I/II (MHC I/II) and CD1a, b, c, d proteins and CD86 costimulatory molecule. Dexosomes contribute to antigen-specific cellular immune responses by incorporating the MHC proteins with antigen molecules and transferring the antigen-MHC complexes and other associated molecules to naive DCs. A variety of ex vivo and in vivo studies demonstrated that antigen-loaded dexosomes were able to initiate potent antitumor immunity. Human dexosomes can be easily prepared using monocyte-derived DCs isolated by leukapheresis of peripheral blood and treated ex vivo by cytokines and other factors. The feasibility of implementing dexosomes as therapeutic antitumor vaccines has been verified in two phase I and one phase II clinical trials in malignant melanoma and non small cell lung carcinoma patients. These studies proved the safety of dexosome administration and showed that dexosome vaccines have the capacity to trigger both the adaptive (T lymphocytes) and the innate (natural killer cells) immune cell recalls. In the current review, we will focus on the perspective of utilizing dexosome vaccines in the context of cancer immunotherapy. FAU - Nikfarjam, Sepideh AU - Nikfarjam S AD - Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran. FAU - Rezaie, Jafar AU - Rezaie J AD - Solid Tumor Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, P.O. Box: 1138, Shafa St, Ershad Blvd., 57147, Urmia, Iran. FAU - Kashanchi, Fatah AU - Kashanchi F AD - School of Systems Biology, Laboratory of Molecular Virology, George Mason University, Discovery Hall Room 182, 10900 University Blvd., VA, 20110, Manassas, USA. fkashanc@gmu.edu. FAU - Jafari, Reza AU - Jafari R AUID- ORCID: 0000-0003-2036-9043 AD - Solid Tumor Research Center, Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences, P.O. Box: 1138, Shafa St, Ershad Blvd., 57147, Urmia, Iran. Jafari.reza@umsu.ac.ir. AD - Department of Immunology and Genetics, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran. Jafari.reza@umsu.ac.ir. LA - eng PT - Journal Article PT - Review DEP - 20201123 PL - England TA - J Exp Clin Cancer Res JT - Journal of experimental & clinical cancer research : CR JID - 8308647 RN - 0 (Cancer Vaccines) SB - IM MH - Cancer Vaccines/pharmacology/*therapeutic use MH - Dendritic Cells/*immunology MH - Exosomes/*immunology MH - Humans MH - Immunotherapy/*methods PMC - PMC7686678 OTO - NOTNLM OT - Anti-cancer vaccine OT - Dendritic cell-derived exosome OT - Dexosome OT - Exosome OT - Extracellular vesicle OT - Immunotherapy COIS- The authors declare that they have no competing interests. EDAT- 2020/11/25 06:00 MHDA- 2021/08/04 06:00 PMCR- 2020/11/23 CRDT- 2020/11/24 05:39 PHST- 2020/08/05 00:00 [received] PHST- 2020/11/13 00:00 [accepted] PHST- 2020/11/24 05:39 [entrez] PHST- 2020/11/25 06:00 [pubmed] PHST- 2021/08/04 06:00 [medline] PHST- 2020/11/23 00:00 [pmc-release] AID - 10.1186/s13046-020-01781-x [pii] AID - 1781 [pii] AID - 10.1186/s13046-020-01781-x [doi] PST - epublish SO - J Exp Clin Cancer Res. 2020 Nov 23;39(1):258. doi: 10.1186/s13046-020-01781-x.