Articles by Robert R. G. Vries in JoVE
Forskolin-induced Swelling in Intestinal Organoids: An In Vitro Assay for Assessing Drug Response in Cystic Fibrosis Patients Sylvia F. Boj1, Annelotte M. Vonk2, Marvin Statia1, Jinyi Su1, Johanna F. Dekkers3, Robert R. G. Vries1, Jeffrey M. Beekman2, Hans Clevers1,4 1Foundation Hubrecht Organoid Technology, 2Department of Pediatric Pulmonology, Regenerative Medicine Centre Utrecht, Wilhelmina Children's Hospital, University Medical Centre Utrecht, 3Department of Stem Cells and Cancer, Walter and Eliza Hall Institute of Medical Research, 4Hubrecht Institute for Developmental Biology and Stem Cell Research, University Medical Centre Utrecht This protocol describes an assay for measuring CFTR function and CFTR modulator responses in cultured tissue from subjects with cystic fibrosis (CF). Biopsy-derived intestinal organoids swell in a cAMP-driven fashion, a response that is defective (or strongly reduced) in CF organoids and can be restored by exposure to CFTR modulators.
Other articles by Robert R. G. Vries on PubMed
Long-term Culture of Genome-stable Bipotent Stem Cells from Adult Human Liver Cell. Jan, 2015 | Pubmed ID: 25533785 Despite the enormous replication potential of the human liver, there are currently no culture systems available that sustain hepatocyte replication and/or function in vitro. We have shown previously that single mouse Lgr5+ liver stem cells can be expanded as epithelial organoids in vitro and can be differentiated into functional hepatocytes in vitro and in vivo. We now describe conditions allowing long-term expansion of adult bile duct-derived bipotent progenitor cells from human liver. The expanded cells are highly stable at the chromosome and structural level, while single base changes occur at very low rates. The cells can readily be converted into functional hepatocytes in vitro and upon transplantation in vivo. Organoids from α1-antitrypsin deficiency and Alagille syndrome patients mirror the in vivo pathology. Clonal long-term expansion of primary adult liver stem cells opens up experimental avenues for disease modeling, toxicology studies, regenerative medicine, and gene therapy.
Disease Modeling and Gene Therapy of Copper Storage Disease in Canine Hepatic Organoids Stem Cell Reports. Oct, 2015 | Pubmed ID: 26455412 The recent development of 3D-liver stem cell cultures (hepatic organoids) opens up new avenues for gene and/or stem cell therapy to treat liver disease. To test safety and efficacy, a relevant large animal model is essential but not yet established. Because of its shared pathologies and disease pathways, the dog is considered the best model for human liver disease. Here we report the establishment of a long-term canine hepatic organoid culture allowing undifferentiated expansion of progenitor cells that can be differentiated toward functional hepatocytes. We show that cultures can be initiated from fresh and frozen liver tissues using Tru-Cut or fine-needle biopsies. The use of Wnt agonists proved important for canine organoid proliferation and inhibition of differentiation. Finally, we demonstrate that successful gene supplementation in hepatic organoids of COMMD1-deficient dogs restores function and can be an effective means to cure copper storage disease.