PMID- 38088451 OWN - NLM STAT- MEDLINE DCOM- 20240318 LR - 20240318 IS - 1521-4141 (Electronic) IS - 0014-2980 (Linking) VI - 54 IP - 3 DP - 2024 Mar TI - PGE2-EP4 signaling steers cDC2 maturation toward the induction of suppressive T-cell responses. PG - e2350770 LID - 10.1002/eji.202350770 [doi] AB - Dendritic cells (DCs) shape adaptive immunity in response to environmental cues such as cytokines or lipid mediators, including prostaglandin E2 (PGE2). In cancer, tumors are known to establish an enriched PGE2 microenvironment. Tumor-derived PGE2 primes regulatory features across immune cells, including DCs, facilitating tumor progression. PGE2 shapes DC function by providing signaling via its two so-called E-prostanoid receptors (EPs) EP2 and EP4. Although studies with monocyte-derived DCs have shown the importance of PGE2 signaling, the role of PGE2-EP2/EP4 on conventional DCs type 2 (cDC2s), is still poorly defined. In this study, we investigated the function of EP2 and EP4 using specific EP antagonists on human cDC2s. Our results show that EP2 and EP4 exhibit different functions in cDC2s, with EP4 modulating the upregulation of activation markers (CD80, CD86, CD83, MHC class II) and the production of IL-10 and IL-23. Furthermore, PGE2-EP4 boosts CCR type 7-based migration as well as a higher T-cell expansion capacity, characterized by the enrichment of suppressive rather than pro-inflammatory T-cell populations. Our findings are relevant to further understanding the role of EP receptors in cDC2s, underscoring the benefit of targeting the PGE2-EP2/4 axis for therapeutic purposes in diseases such as cancer. CI - (c) 2024 The Authors. European Journal of Immunology published by Wiley-VCH GmbH. FAU - Cuenca-Escalona, Jorge AU - Cuenca-Escalona J AUID- ORCID: 0000-0002-4915-1518 AD - Department of Medical BioSciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, Nijmegen, 6525GA, the Netherlands. FAU - Florez-Grau, Georgina AU - Florez-Grau G AD - Department of Medical BioSciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, Nijmegen, 6525GA, the Netherlands. FAU - van den Dries, Koen AU - van den Dries K AD - Department of Medical BioSciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, Nijmegen, 6525GA, the Netherlands. FAU - Cambi, Alessandra AU - Cambi A AD - Department of Medical BioSciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, Nijmegen, 6525GA, the Netherlands. FAU - de Vries, I Jolanda M AU - de Vries IJM AD - Department of Medical BioSciences, Radboud University Medical Center, Geert Grooteplein Zuid 26-28, Nijmegen, 6525GA, the Netherlands. LA - eng GR - LSHM18056-SGF/Health Holland grant DC4Balance/ PT - Journal Article DEP - 20240108 PL - Germany TA - Eur J Immunol JT - European journal of immunology JID - 1273201 RN - K7Q1JQR04M (Dinoprostone) RN - 0 (Receptors, Prostaglandin E, EP2 Subtype) RN - 0 (Receptors, Prostaglandin E, EP4 Subtype) SB - IM MH - Humans MH - *Dinoprostone MH - T-Lymphocytes MH - Receptors, Prostaglandin E, EP2 Subtype MH - Receptors, Prostaglandin E, EP4 Subtype MH - *Neoplasms MH - Tumor Microenvironment OTO - NOTNLM OT - Conventional dendritic cells type 2 OT - Dendritic cells OT - E-prostanoid receptor OT - Immune responses OT - Innate immunity OT - Prostaglandin E2 OT - Signal transduction OT - T cells OT - Tumor microenvironment EDAT- 2023/12/13 12:44 MHDA- 2024/03/18 06:44 CRDT- 2023/12/13 08:59 PHST- 2023/12/11 00:00 [revised] PHST- 2023/09/12 00:00 [received] PHST- 2023/12/12 00:00 [accepted] PHST- 2024/03/18 06:44 [medline] PHST- 2023/12/13 12:44 [pubmed] PHST- 2023/12/13 08:59 [entrez] AID - 10.1002/eji.202350770 [doi] PST - ppublish SO - Eur J Immunol. 2024 Mar;54(3):e2350770. doi: 10.1002/eji.202350770. Epub 2024 Jan 8.