PMID- 34354753 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210807 IS - 1687-966X (Print) IS - 1687-9678 (Electronic) VI - 2021 DP - 2021 TI - Development of a Human Intestinal Organoid Model for In Vitro Studies on Gut Inflammation and Fibrosis. PG - 9929461 LID - 10.1155/2021/9929461 [doi] LID - 9929461 AB - Inflammatory Bowel Diseases (IBDs) are characterized by chronic intestinal inflammation and fibrosis, the latter being the predominant denominator for long-term complications. Epithelial and mesenchymal 2D cultures are highly utilized in vitro models for the preclinical evaluation of anti-inflammatory and antifibrotic therapies. More recently, human intestinal organoids (HIOs), a new 3D in vitro model derived from pluripotent stem cells, have the advantage to closely resemble the architecture of the intestinal mucosa. However, the appropriate timing for the study of inflammatory and fibrotic responses, during HIO development, has not been adequately investigated. We developed HIOs from the human embryonic stem cell line, H1, and examined the expression of mesenchymal markers during their maturation process. We also investigated the effect of inflammatory stimuli on the expression of fibrotic and immunological mediators. Serial evaluation of the expression of mesenchymal and extracellular matrix (ECM) markers revealed that HIOs have an adequately developed mesenchymal component, which gradually declines through culture passages. Specifically, CD90, collagen type I, collagen type III, and fibronectin were highly expressed in early passages but gradually diminished in late passages. The proinflammatory cytokines IL-1alpha and TNF-alpha induced the mRNA expression of fibronectin, collagen types I and III, tissue factor (TF), and alpha-smooth muscle actin (alpha-SMA) primarily in early passages. Similarly, HIOs elicited strong mRNA and protein mesenchymal (CXCL10) and epithelial (CXCL1, CCL2, CXCL8, and CCL20) chemokine responses in early but not late passages. In contrast, the epithelial tight junction components, CLDN1 and JAMA, responded to inflammatory stimulation independently of the culture passage. Our findings indicate that this HIO model contains a functional mesenchymal component, during early passages, and underline the significance of the mesenchymal cells' fitness in inflammatory and fibrotic responses. Therefore, we propose that this model is suitable for the study of epithelial-mesenchymal interactions in early passages when the mesenchymal component is active. CI - Copyright (c) 2021 Leonidas Kandilogiannakis et al. FAU - Kandilogiannakis, Leonidas AU - Kandilogiannakis L AUID- ORCID: 0000-0002-5982-4210 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Filidou, Eirini AU - Filidou E AUID- ORCID: 0000-0002-7146-4684 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Drygiannakis, Ioannis AU - Drygiannakis I AUID- ORCID: 0000-0001-5845-2040 AD - Gastroenterology and Hepatology Research Laboratory, Medical School, University of Crete, Heraklion, Greece. FAU - Tarapatzi, Gesthimani AU - Tarapatzi G AUID- ORCID: 0000-0002-6877-5991 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Didaskalou, Stylianos AU - Didaskalou S AUID- ORCID: 0000-0001-5932-9626 AD - Laboratory of Molecular Cell Biology, Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Koffa, Maria AU - Koffa M AUID- ORCID: 0000-0003-2255-3426 AD - Laboratory of Molecular Cell Biology, Department of Molecular Biology and Genetics, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Arvanitidis, Konstantinos AU - Arvanitidis K AUID- ORCID: 0000-0003-0639-2474 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. FAU - Bamias, Giorgos AU - Bamias G AUID- ORCID: 0000-0002-5492-5717 AD - GI-Unit, Third Department of Internal Medicine, National & Kapodistrian University of Athens, Sotiria Hospital, Athens, Greece. FAU - Valatas, Vassilis AU - Valatas V AUID- ORCID: 0000-0001-6660-0621 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. AD - Gastroenterology and Hepatology Research Laboratory, Medical School, University of Crete, Heraklion, Greece. FAU - Paspaliaris, Vasilis AU - Paspaliaris V AUID- ORCID: 0000-0003-0274-3046 AD - Tithon Biotech Inc., San Diego, USA. FAU - Kolios, George AU - Kolios G AUID- ORCID: 0000-0002-2066-4782 AD - Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, Alexandroupolis, Greece. LA - eng PT - Journal Article DEP - 20210727 PL - United States TA - Stem Cells Int JT - Stem cells international JID - 101535822 PMC - PMC8331310 COIS- The authors have no conflict to declare. EDAT- 2021/08/07 06:00 MHDA- 2021/08/07 06:01 PMCR- 2021/07/27 CRDT- 2021/08/06 06:50 PHST- 2021/03/04 00:00 [received] PHST- 2021/06/08 00:00 [revised] PHST- 2021/07/01 00:00 [accepted] PHST- 2021/08/06 06:50 [entrez] PHST- 2021/08/07 06:00 [pubmed] PHST- 2021/08/07 06:01 [medline] PHST- 2021/07/27 00:00 [pmc-release] AID - 10.1155/2021/9929461 [doi] PST - epublish SO - Stem Cells Int. 2021 Jul 27;2021:9929461. doi: 10.1155/2021/9929461. eCollection 2021.