Journal
NANO LETTERS
Volume 17, Issue 12, Pages 7387-7393Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b03218
Keywords
Cell engineering immunogenic cell death; nanoparticle; cancer vaccine; cancer immunotherapy
Categories
Funding
- NIH [R01EB022563, R01CA210273, U01CA210152]
- Melanoma Research Alliance [348774]
- MTRAC for Life Sciences Hub
- UM Forbes Institute for Cancer Discovery Pilot Grant
- Emerald Foundation
- DoD/CDMRP Peer Reviewed Cancer Research Program [W81XWH-16-1-0369]
- NSF CAREER Award [1553831]
- UM Rackham Predoctoral Fellowship
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1553831] Funding Source: National Science Foundation
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Despite their potential, conventional whole-cell cancer vaccines prepared by freeze thawing or irradiation have shown limited therapeutic efficacy in clinical trials. Recent studies have indicated that cancer cells treated with certain chemotherapeutics, such as mitoxantrone, can undergo immunogenic cell death (ICD) and initiate antitumor immune responses. However, it remains unclear how to exploit ICD for cancer immunotherapy. Here, we present a new material-based strategy for converting immunogenically dying tumor cells into a powerful platform for cancer vaccination and demonstrate their therapeutic potential in murine models of melanoma and colon carcinoma. We have generated immunogenically dying tumor cells surface-modified with adjuvant-loaded nanoparticles. Dying tumor cells laden with adjuvant nanodepots efficiently promote activation and antigen cross-presentation by dendritic cells in vitro and elicit robust antigen-specific CD8ce T-cells in vivo. Furthermore, whole tumor-cell vaccination combined with immune checkpoint blockade leads to complete tumor regression in similar to 78% of CT26 tumor-bearing mice and establishes long-term immunity against tumor recurrence. Our strategy presented here may open new doors to personalised cancer immunotherapy tailored to individual patient's tumor cells.
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