PMID- 37901221 OWN - NLM STAT- MEDLINE DCOM- 20231031 LR - 20231106 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 14 DP - 2023 TI - An optimized cocktail of small molecule inhibitors promotes the maturation of dendritic cells in GM-CSF mouse bone marrow culture. PG - 1264609 LID - 10.3389/fimmu.2023.1264609 [doi] LID - 1264609 AB - Dendritic cells (DCs) are the most potent antigen-presenting cells, playing an essential role in the pathogen and tumor recognition, and anti-tumor immunity, and linking both the innate and adaptive immunity. The monocyte-derived DCs generated by ex vivo culture, have been used for cancer immunotherapy to eliminate tumor; however, the clinical efficacies are not sufficient, and further improvement is essential. In this study, we established a method to generate DCs using small molecule compounds for cancer immunotherapy. We observed an increase in the percentage of CD11c(+)I-A/I-E(high) cells, representing DCs, by adding four small molecular inhibitors: Y27632, PD0325901, PD173074, and PD98059 (abbreviated as YPPP), in mouse bone marrow (BM) culture with granulocyte-macrophage colony stimulating factor (GM-CSF). BM-derived DCs cultured with YPPP (YPPP-DCs) showed high responsiveness to lipopolysaccharide stimulation, resulting in increased interleukin (IL) -12 production and enhanced proliferation activity when co-cultured with naive T cells compared with the vehicle control. RNA-seq analysis revealed an upregulation of peroxisome proliferator - activated receptor (PPAR) gamma associated genes increased in YPPP-DCs. In tumor models treated with anti-programmed death (PD) -1 therapies, mice injected intratumorally with YPPP-DCs as a DCs vaccine exhibited reduced tumor growth and increased survival. These findings suggested that our method would be useful for the induction of DCs that efficiently activate effector T cells for cancer immunotherapy. CI - Copyright (c) 2023 Matsuba, Ura, Saito, Ogasawara, Shimodaira, Niida and Onai. FAU - Matsuba, Shintaro AU - Matsuba S AD - Department of Immunology, Kanazawa Medical University, Uchinada, Ishikawa, Japan. FAU - Ura, Hiroki AU - Ura H AD - Center for Clinical Genomics, Kanazawa Medical University Hospital, Uchinada, Ishikawa, Japan. AD - Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Uchinada, Ishikawa, Japan. FAU - Saito, Fumiji AU - Saito F AD - Department of Immunology, Kanazawa Medical University, Uchinada, Ishikawa, Japan. FAU - Ogasawara, Chie AU - Ogasawara C AD - Department of Immunology, Kanazawa Medical University, Uchinada, Ishikawa, Japan. FAU - Shimodaira, Shigetaka AU - Shimodaira S AD - Department of Regenerative Medicine, Kanazawa Medical University, Uchinada, Ishikawa, Japan. AD - Center for Regenerative Medicine, Kanazawa Medical University Hospital, Uchinada, Ishikawa, Japan. FAU - Niida, Yo AU - Niida Y AD - Center for Clinical Genomics, Kanazawa Medical University Hospital, Uchinada, Ishikawa, Japan. AD - Division of Genomic Medicine, Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Uchinada, Ishikawa, Japan. FAU - Onai, Nobuyuki AU - Onai N AD - Department of Immunology, Kanazawa Medical University, Uchinada, Ishikawa, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231013 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 83869-56-1 (Granulocyte-Macrophage Colony-Stimulating Factor) SB - IM MH - Animals MH - Mice MH - *Granulocyte-Macrophage Colony-Stimulating Factor/pharmacology MH - Dendritic Cells MH - Bone Marrow MH - T-Lymphocytes MH - *Neoplasms PMC - PMC10611476 OTO - NOTNLM OT - cytokine production OT - dendritic cells OT - immunotherapy OT - mixed lymphoid reaction OT - small molecule inhibitor COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision. EDAT- 2023/10/30 06:47 MHDA- 2023/10/31 06:42 PMCR- 2023/01/01 CRDT- 2023/10/30 04:47 PHST- 2023/07/21 00:00 [received] PHST- 2023/09/21 00:00 [accepted] PHST- 2023/10/31 06:42 [medline] PHST- 2023/10/30 06:47 [pubmed] PHST- 2023/10/30 04:47 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2023.1264609 [doi] PST - epublish SO - Front Immunol. 2023 Oct 13;14:1264609. doi: 10.3389/fimmu.2023.1264609. eCollection 2023.