Abstract
The adenovirus vector- carrying reduced expression in immortalized cell (REIC) gene (Ad-REIC) increases endoplasmic reticulum stress chaperone GRP78/BiP expression and induces the JNK-mediated apoptotic pathway. We aimed to determine whether Ad-REIC-induced apoptotic cell death can trigger immunogenic cell death (ICD). We examined the emission of damage-associated molecular patterns in vitro and the vaccination effect in vivo. We determined the immunological changes in the tumour microenvironment by putative ICD inducers and the combined effects of immune checkpoint blockade therapies. Ad-REIC induced the release of high-mobility group box 1 and adenosine triphosphate and the translocation of calreticulin in murine mesothelioma AB12 cells. The vaccination effect was elicited by Ad-REIC treatment in vivo. The effect of Ad-REIC was potentiated by anti-cytotoxic T-lymphocyte-associated protein 4 antibody treatment in a murine mesothelioma AB1-HA cell model. Ad-REIC induces ICD in malignant mesothelioma.
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