PMID- 34859812 OWN - NLM STAT- MEDLINE DCOM- 20220228 LR - 20220228 IS - 2042-650X (Electronic) IS - 2042-6496 (Linking) VI - 12 IP - 24 DP - 2021 Dec 13 TI - Hop-derived fraction rich in beta acids and prenylflavonoids regulates the inflammatory response in dendritic cells differently from quercetin: unveiling metabolic changes by mass spectrometry-based metabolomics. PG - 12800-12811 LID - 10.1039/d1fo02361f [doi] AB - Dendritic cells (DCs) represent a heterogeneous family of immune cells that link innate and adaptive immunity and their activation is linked to metabolic changes that are essential to support their activity and function. Hence, targeting the metabolism of DCs represents an opportunity to modify the inflammatory and immune response. Among the natural matrices, Humulus lupulus (Hop) compounds have recently been shown to exhibit immunomodulatory and anti-inflammatory activity. This study aimed to evaluate the ability of specific Hop fractions to modulate DCs metabolism after stimulation with lipopolysaccharide (LPS) by an untargeted metabolomics approach and compare their effect with flavonol quercetin. Following liquid chromatography-based fractionation, three fractions (A, B, and C) were obtained and tested. Cytokine and gene expression were evaluated using ELISA and qPCR, respectively, while the untargeted metabolomics analysis was performed using a combined HILIC-HRMS and DI-FT-ICR approach. The HOP C fraction and quercetin could both reduce the production of several inflammatory cytokines such as IL-6, IL-1alpha, IL-1beta, and TNF, but differently from quercetin, the HOP C mechanism is independent of extracellular iron-sequestration and showed significant upregulation of the Nrf2/Nqo1 pathway and Ap-1 compared to quercetin. The untargeted analysis revealed the modulation of several key pathways linked to pro-inflammatory and glycolytic phenotypes. In particular, HOP C treatment could modulate the oxidative step of the pentose phosphate pathway (PPP) and reduce the inflammatory mediator succinate, citrulline, and purine-pyrimidine metabolism, differently from quercetin. These results highlight the potential anti-inflammatory mechanism of specific Hop-derived compounds in restoring the dysregulated metabolism in DCs, which can be used in preventive or adjuvant therapies to suppress the undesirable inflammatory response. FAU - Sommella, Eduardo AU - Sommella E AD - Department of Pharmacy, University of Salerno, Fisciano, SA, Italy. pcampiglia@unisa.it. FAU - Verna, Giulio AU - Verna G AD - Department of Pharmacy, University of Salerno, Fisciano, SA, Italy. pcampiglia@unisa.it. AD - PhD Program in Drug Discovery and Development, University of Salerno, Fisciano, SA, Italy. FAU - Liso, Marina AU - Liso M AD - National Institute of Gastroenterology "S. de Bellis", Research Hospital, Castellana Grotte, BA, Italy. FAU - Salviati, Emanuela AU - Salviati E AD - Department of Pharmacy, University of Salerno, Fisciano, SA, Italy. pcampiglia@unisa.it. FAU - Esposito, Tiziana AU - Esposito T AD - Department of Pharmacy, University of Salerno, Fisciano, SA, Italy. pcampiglia@unisa.it. FAU - Carbone, Daniela AU - Carbone D AD - Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, PA, Italy. FAU - Pecoraro, Camilla AU - Pecoraro C AD - Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, PA, Italy. FAU - Chieppa, Marcello AU - Chieppa M AD - National Institute of Gastroenterology "S. de Bellis", Research Hospital, Castellana Grotte, BA, Italy. FAU - Campiglia, Pietro AU - Campiglia P AUID- ORCID: 0000-0002-1069-2181 AD - Department of Pharmacy, University of Salerno, Fisciano, SA, Italy. pcampiglia@unisa.it. LA - eng PT - Journal Article DEP - 20211213 PL - England TA - Food Funct JT - Food & function JID - 101549033 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Flavonoids) RN - 0 (Plant Extracts) RN - 0 (Purines) RN - 0 (Pyrimidines) RN - 29VT07BGDA (Citrulline) RN - 9IKM0I5T1E (Quercetin) RN - AB6MNQ6J6L (Succinic Acid) RN - K8CXK5Q32L (pyrimidine) SB - IM MH - Animals MH - Anti-Inflammatory Agents/immunology/metabolism MH - Bone Marrow/immunology/metabolism MH - Citrulline/immunology/*metabolism MH - Dendritic Cells/immunology/*metabolism MH - Disease Models, Animal MH - Flavonoids MH - Humulus/immunology/*metabolism MH - Inflammation/immunology/*metabolism MH - Mass Spectrometry/methods MH - Metabolomics/methods MH - Mice MH - Mice, Inbred C57BL MH - Plant Extracts/immunology/metabolism MH - Purines MH - Pyrimidines/immunology/*metabolism MH - Quercetin/immunology/*metabolism MH - Succinic Acid/immunology/*metabolism EDAT- 2021/12/04 06:00 MHDA- 2022/03/01 06:00 CRDT- 2021/12/03 08:46 PHST- 2021/12/04 06:00 [pubmed] PHST- 2022/03/01 06:00 [medline] PHST- 2021/12/03 08:46 [entrez] AID - 10.1039/d1fo02361f [doi] PST - epublish SO - Food Funct. 2021 Dec 13;12(24):12800-12811. doi: 10.1039/d1fo02361f.