title: Dimethyl sulfoxide (DMSO) attenuates the inflammatory response in the in vitro intestinal Caco-2 cell model.
abstract: This study aimed to investigate dose effects of dimethyl sulfoxide (DMSO) (0.05-1%) on the intestinal inflammatory response in confluent- and differentiated-Caco-2 cells stimulated with interleukin (IL)-1β or a pro-inflammatory cocktail for 24 h. Cyclooxygenase-2 (COX-2) activity was assayed by incubating inflamed cells with arachidonic acid and then measuring prostaglandin-E(2) (PGE(2)) produced. Soluble mediators (IL-8, IL-6, macrophage chemoattractant protein-1 (MCP-1), and COX-2-derived PGE(2)) were quantified by enzyme immunoassays and mRNA expression of 33 proteins by high throughput TaqMan Low Density Array. Data showed that DMSO decreased induced IL-6 and MCP-1 secretions in a dose-dependent manner (P<0.05), but not IL-8; these effects were cell development- and stimulus- independent. Moreover, in IL-1β-stimulated confluent-cells, DMSO dose-dependently reduced COX-2-derived PGE(2) (P<0.05). DMSO at 0.5% decreased significantly mRNA levels of 14 proteins involved in the inflammatory response (including IL-6, IL-1α, IL-1β, and COX-2). Thus, DMSO at low concentrations (0.1-0.5%) exhibits anti-inflammatory properties in the in vitro intestinal Caco-2 cell model. This point is important to be taken into account when assessing anti-inflammatory properties of bioactive compounds requiring DMSO as vehicle, such as phenolic compounds, in order to avoid miss-interpretation of the results.
authors: Life Science Institute, Catholic University of Louvain (UCL), B-1348 Louvain-la-Neuve, Belgium.
authors: Sylvie
authors: S
authors: Hollebeeck
authors: Thomas
authors: T
authors: Raas
authors: Neil
authors: N
authors: Piront
authors: Yves-Jacques
authors: YJ
authors: Schneider
authors: Olivier
authors: O
authors: Toussaint
authors: Yvan
authors: Y
authors: Larondelle
authors: Alexandrine
authors: A
authors: During
mesh_terms: D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D018938:Caco-2 Cells; D018932:Chemokine CCL2 / Q000378:metabolism; D004121:Dimethyl Sulfoxide / Q000494:pharmacology*; D015232:Dinoprostone / Q000096:biosynthesis; D004305:Dose-Response Relationship, Drug; D006801:Humans; D053583:Interleukin-1beta / Q000494:pharmacology; D015850:Interleukin-6 / Q000378:metabolism; D016328:NF-kappa B / Q000235:genetics; D012333:RNA, Messenger / Q000032:analysis
chemical_list: D000893:Anti-Inflammatory Agents; C111835:CCL2 protein, human; D018932:Chemokine CCL2; D053583:Interleukin-1beta; D015850:Interleukin-6; D016328:NF-kappa B; D012333:RNA, Messenger; D015232:Dinoprostone; D004121:Dimethyl Sulfoxide