PMID- 37818458 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231012 IS - 1662-5099 (Print) IS - 1662-5099 (Electronic) IS - 1662-5099 (Linking) VI - 16 DP - 2023 TI - Human BBB-on-a-chip reveals barrier disruption, endothelial inflammation, and T cell migration under neuroinflammatory conditions. PG - 1250123 LID - 10.3389/fnmol.2023.1250123 [doi] LID - 1250123 AB - The blood-brain barrier (BBB) is a highly selective barrier that ensures a homeostatic environment for the central nervous system (CNS). BBB dysfunction, inflammation, and immune cell infiltration are hallmarks of many CNS disorders, including multiple sclerosis and stroke. Physiologically relevant human in vitro models of the BBB are essential to improve our understanding of its function in health and disease, identify novel drug targets, and assess potential new therapies. We present a BBB-on-a-chip model comprising human brain microvascular endothelial cells (HBMECs) cultured in a microfluidic platform that allows parallel culture of 40 chips. In each chip, a perfused HBMEC vessel was grown against an extracellular matrix gel in a membrane-free manner. BBBs-on-chips were exposed to varying concentrations of pro-inflammatory cytokines tumor necrosis factor alpha (TNFalpha) and interleukin-1 beta (IL-1beta) to mimic inflammation. The effect of the inflammatory conditions was studied by assessing the BBBs-on-chips' barrier function, cell morphology, and expression of cell adhesion molecules. Primary human T cells were perfused through the lumen of the BBBs-on-chips to study T cell adhesion, extravasation, and migration. Under inflammatory conditions, the BBBs-on-chips showed decreased trans-endothelial electrical resistance (TEER), increased permeability to sodium fluorescein, and aberrant cell morphology in a concentration-dependent manner. Moreover, we observed increased expression of cell adhesion molecules and concomitant monocyte adhesion. T cells extravasated from the inflamed blood vessels and migrated towards a C-X-C Motif Chemokine Ligand 12 (CXCL12) gradient. T cell adhesion was significantly reduced and a trend towards decreased migration was observed in presence of Natalizumab, an antibody drug that blocks very late antigen-4 (VLA-4) and is used in the treatment of multiple sclerosis. In conclusion, we demonstrate a high-throughput microfluidic model of the human BBB that can be used to model neuroinflammation and assess anti-inflammatory and barrier-restoring interventions to fight neurological disorders. CI - Copyright (c) 2023 Nair, Groenendijk, Overdevest, Fowke, Annida, Mocellin, de Vries and Wevers. FAU - Nair, Arya Lekshmi AU - Nair AL AD - MIMETAS BV, Oegstgeest, Netherlands. AD - Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience - Neuroinfection and Neuroinflammation, Amsterdam, Netherlands. FAU - Groenendijk, Linda AU - Groenendijk L AD - MIMETAS BV, Oegstgeest, Netherlands. FAU - Overdevest, Roos AU - Overdevest R AD - MIMETAS BV, Oegstgeest, Netherlands. FAU - Fowke, Tania M AU - Fowke TM AD - MIMETAS BV, Oegstgeest, Netherlands. FAU - Annida, Rumaisha AU - Annida R AD - MIMETAS BV, Oegstgeest, Netherlands. FAU - Mocellin, Orsola AU - Mocellin O AD - MIMETAS BV, Oegstgeest, Netherlands. FAU - de Vries, Helga E AU - de Vries HE AD - Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience - Neuroinfection and Neuroinflammation, Amsterdam, Netherlands. FAU - Wevers, Nienke R AU - Wevers NR AD - MIMETAS BV, Oegstgeest, Netherlands. LA - eng PT - Journal Article DEP - 20230925 PL - Switzerland TA - Front Mol Neurosci JT - Frontiers in molecular neuroscience JID - 101477914 PMC - PMC10561300 OTO - NOTNLM OT - BBB-on-a-chip OT - blood-brain barrier OT - neuroinflammation OT - organ-on-a-chip OT - transendothelial migration 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. EDAT- 2023/10/11 06:45 MHDA- 2023/10/11 06:46 PMCR- 2023/01/01 CRDT- 2023/10/11 04:01 PHST- 2023/06/29 00:00 [received] PHST- 2023/09/06 00:00 [accepted] PHST- 2023/10/11 06:46 [medline] PHST- 2023/10/11 06:45 [pubmed] PHST- 2023/10/11 04:01 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fnmol.2023.1250123 [doi] PST - epublish SO - Front Mol Neurosci. 2023 Sep 25;16:1250123. doi: 10.3389/fnmol.2023.1250123. eCollection 2023.