PMID- 22159452 OWN - NLM STAT- MEDLINE DCOM- 20130110 LR - 20240426 IS - 1432-0851 (Electronic) IS - 0340-7004 (Print) IS - 0340-7004 (Linking) VI - 61 IP - 7 DP - 2012 Jul TI - Intravenous and intradermal TriMix-dendritic cell therapy results in a broad T-cell response and durable tumor response in a chemorefractory stage IV-M1c melanoma patient. PG - 1033-43 LID - 10.1007/s00262-011-1176-2 [doi] AB - Dendritic cells (DCs) electroporated with mRNA encoding CD70, CD40L and a constitutively active toll-like receptor 4 (TriMix-DC) have an increased T-cell stimulatory capacity. In a prospective phase IB clinical trial, we treated melanoma patients with intradermal and intravenous injections of autologous TriMix-DC co-electroporated with mRNA encoding full-length MAGE-A3, MAGE-C2, tyrosinase and gp100. We report here the immunological and clinical results obtained in one patient with a particularly favorable outcome. This patient had stage IV-M1c melanoma with documented progression during dacarbazine chemotherapy and received 5 TriMix-DC injections. Following DC therapy, a broad CD8(+) T-cell response against multiple epitopes derived from all four treatment antigens was found in the blood and among T cells derived from DTH biopsy. In addition, CD4(+) T cells recognizing different MAGE-A3-derived epitopes were detected in DTH-derived cells. A spontaneous anti-MAGE-C2 CD8(+) T-cell response was present prior to TriMix-DC therapy and increased during treatment. The tumor response was assessed with 18-fluorodeoxyglucose-positron emission/computed tomography. We documented a partial tumor response according to RECIST criteria with a marked reduction in (18)F-FDG-uptake by lung, lymph node and bone metastases. The patient remains free from progression after 12 months of follow-up. This case report indicates that administration of autologous TriMix-DC by the combined intradermal and intravenous route can mediate a durable objective tumor response accompanied by a broad T-cell response in a chemorefractory stage IV-M1c melanoma patient. FAU - Van Nuffel, An M T AU - Van Nuffel AM AD - Laboratory of Molecular and Cellular Therapy, Department of Immunology-Physiology, Vrije Universiteit Brussel, Belgium. FAU - Benteyn, Daphne AU - Benteyn D FAU - Wilgenhof, Sofie AU - Wilgenhof S FAU - Corthals, Jurgen AU - Corthals J FAU - Heirman, Carlo AU - Heirman C FAU - Neyns, Bart AU - Neyns B FAU - Thielemans, Kris AU - Thielemans K FAU - Bonehill, Aude AU - Bonehill A LA - eng PT - Case Reports PT - Clinical Trial, Phase I PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111210 PL - Germany TA - Cancer Immunol Immunother JT - Cancer immunology, immunotherapy : CII JID - 8605732 RN - 0 (CD27 Ligand) RN - 0 (CD70 protein, human) RN - 0 (RNA, Messenger) RN - 0 (TLR4 protein, human) RN - 0 (Toll-Like Receptor 4) RN - 147205-72-9 (CD40 Ligand) RN - 206GF3GB41 (Helium) RN - 89210-11-7 (trimix) RN - N762921K75 (Nitrogen) RN - S88TT14065 (Oxygen) SB - IM MH - Amino Acid Sequence MH - CD27 Ligand/biosynthesis/genetics/immunology MH - CD40 Ligand/biosynthesis/genetics/immunology MH - Dendritic Cells/*immunology/pathology MH - Electroporation/methods MH - Helium/*administration & dosage MH - Humans MH - Hypersensitivity, Delayed/immunology MH - Immunotherapy, Adoptive/*methods MH - Male MH - Melanoma/*immunology/pathology/*therapy MH - Middle Aged MH - Molecular Sequence Data MH - Neoplasm Staging MH - Nitrogen/*administration & dosage MH - Oxygen/*administration & dosage MH - Prospective Studies MH - RNA, Messenger/administration & dosage/genetics MH - T-Lymphocytes/*immunology MH - Toll-Like Receptor 4/biosynthesis/genetics/immunology PMC - PMC11028719 COIS- TriMix-DCs are the topic of a current patent application (WO2009/034172). AB and KT are mentioned as inventors of this application. None of the authors involved in this study receives any form of support or remuneration related to this platform. EDAT- 2011/12/14 06:00 MHDA- 2013/01/11 06:00 PMCR- 2011/12/10 CRDT- 2011/12/14 06:00 PHST- 2011/08/05 00:00 [received] PHST- 2011/11/25 00:00 [accepted] PHST- 2011/12/14 06:00 [entrez] PHST- 2011/12/14 06:00 [pubmed] PHST- 2013/01/11 06:00 [medline] PHST- 2011/12/10 00:00 [pmc-release] AID - 1176 [pii] AID - 10.1007/s00262-011-1176-2 [doi] PST - ppublish SO - Cancer Immunol Immunother. 2012 Jul;61(7):1033-43. doi: 10.1007/s00262-011-1176-2. Epub 2011 Dec 10.