PMID- 34445092 OWN - NLM STAT- MEDLINE DCOM- 20210920 LR - 20220128 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 22 IP - 16 DP - 2021 Aug 4 TI - Dendritic Cells Pulsed with Cytokine-Adjuvanted Tumor Membrane Vesicles Inhibit Tumor Growth in HER2-Positive and Triple Negative Breast Cancer Models. LID - 10.3390/ijms22168377 [doi] LID - 8377 AB - Dendritic cells (DCs) are the most effective antigen presenting cells for the development of T cell responses. The only FDA approved DC-based immunotherapy to date is Sipuleucel-T, which utilizes a fusion protein to stimulate DCs ex vivo with GM-CSF and simultaneously deliver the antigen PAP for prostate cancer. This approach is restricted by the breadth of immunity elicited to a single antigen, and to cancers that have a defined tumor associated antigen. Other multi-antigen approaches have been restricted by poor efficacy of vaccine adjuvants. We have developed a vaccine platform that consists of autologous DCs pulsed with cytokine-adjuvanted tumor membrane vesicles (TMVs) made from tumor tissue, that encapsulate the antigenic landscape of individual tumors. Here we test the efficacy of DCs pulsed with TMVs incorporated with glycolipid-anchored immunostimulatory molecules (GPI-ISMs) in HER2-positive and triple negative breast cancer murine models. Pulsing of DCs with TMVs containing GPI-ISMs results in superior uptake of vesicles, DC activation and cytokine production. Adaptive transfer of TMV-pulsed DCs to tumor bearing mice results in the inhibition of tumor growth, reduction in lung metastasis, and an increase in immune cell infiltration into the tumors. These observations suggest that DCs pulsed with TMVs containing GPI-GM-CSF and GPI-IL-12 can be further developed to be used as a personalized immunotherapy platform for cancer treatment. FAU - Munoz, Luis E AU - Munoz LE AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Monterroza, Lenore AU - Monterroza L AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Bommireddy, Ramireddy AU - Bommireddy R AUID- ORCID: 0000-0001-7367-3159 AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Shafizadeh, Yalda AU - Shafizadeh Y AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. FAU - Pack, Christopher D AU - Pack CD AD - Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA. FAU - Ramachandiran, Sampath AU - Ramachandiran S AD - Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA. FAU - Reddy, Shaker J C AU - Reddy SJC AD - Metaclipse Therapeutics Corporation, Atlanta, GA 30340, USA. FAU - Selvaraj, Periasamy AU - Selvaraj P AD - Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA 30322, USA. AD - Department of Pathology and Laboratory Medicine, Emory University, Woodruff Memorial Building, Room 7309 101 Woodruff Circle, Atlanta, GA 30322, USA. LA - eng GR - R01 CA202763/CA/NCI NIH HHS/United States GR - R01CA202763/NH/NIH HHS/United States GR - R01CA202763-S/NH/NIH HHS/United States PT - Journal Article DEP - 20210804 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - 0 (Antigens, Neoplasm) RN - 0 (Cancer Vaccines) RN - 0 (Cytokines) RN - EC 2.7.10.1 (ERBB2 protein, human) RN - EC 2.7.10.1 (Erbb2 protein, mouse) RN - EC 2.7.10.1 (Receptor, ErbB-2) SB - IM MH - Adoptive Transfer MH - Animals MH - Antigens, Neoplasm/*immunology MH - Cancer Vaccines/immunology/therapeutic use MH - Cell Line, Tumor MH - Cells, Cultured MH - Cytokines/*immunology MH - Dendritic Cells/*immunology MH - Female MH - Humans MH - Mice MH - Mice, Inbred BALB C MH - Receptor, ErbB-2/analysis/*immunology MH - Triple Negative Breast Neoplasms/immunology/pathology/*therapy PMC - PMC8395038 OTO - NOTNLM OT - GPI-GM-CSF OT - GPI-IL-12 OT - HER2 OT - breast cancer OT - dendritic cells OT - immunotherapy OT - vaccine COIS- Periasamy Selvaraj holds shares in Metaclipse Therapeutics Corporation, a company that is planning to use GPI-anchored molecules to develop membrane-based cancer vaccine in the future as suggested in the current manuscript. EDAT- 2021/08/28 06:00 MHDA- 2021/09/21 06:00 PMCR- 2021/08/04 CRDT- 2021/08/27 01:22 PHST- 2021/06/22 00:00 [received] PHST- 2021/07/27 00:00 [revised] PHST- 2021/07/29 00:00 [accepted] PHST- 2021/08/27 01:22 [entrez] PHST- 2021/08/28 06:00 [pubmed] PHST- 2021/09/21 06:00 [medline] PHST- 2021/08/04 00:00 [pmc-release] AID - ijms22168377 [pii] AID - ijms-22-08377 [pii] AID - 10.3390/ijms22168377 [doi] PST - epublish SO - Int J Mol Sci. 2021 Aug 4;22(16):8377. doi: 10.3390/ijms22168377.