Abstract:
:The graft-versus-leukemia effect reminds us to observe the allogeneic cell elicited anti-tumor immune responses. Here we immunized recipient B6 mice with different types of allogenic leukocytes and found that vaccination with allogenic dendritic cells (alloDC) elicited the most efficient protection against broad-spectrum tumors. The recipient lymphocytes were analyzed and the data showed that CD8 T cells increased significantly after immunization and expressed effector memory T cell marker KLRG1. Functional evaluation demonstrated that these KLRG1+CD8 T cells could kill tumor cells in vitro and in vivo in Granzyme B- and Fas/FasL-dependent manners with no tumor antigen specificity, and tend to migrate into tumor sites by high expression of heparanase. Adoptive transfer of these cells could provide antitumor protection against tumors. AlloDC could also treat mice with residual tumors and combination of anti-PD1 antibody could enhance this effects. Together, our study showed that alloDC-immunization could induce potent antitumor effect through the expansion of KLRG1+CD8 T cells, which can work as both preventive and therapeutic tumor vaccines.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang C,Li Z,Zhu Z,Chai Y,Wu Y,Yuan Z,Chang Z,Wang Z,Zhang Mdoi
10.1038/s41598-019-52151-3subject
Has Abstractpub_date
2019-10-29 00:00:00pages
15527issue
1issn
2045-2322pii
10.1038/s41598-019-52151-3journal_volume
9pub_type
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