title: Fibrin microbeads (FMB) as a 3D platform for kidney gene and cell therapy.
abstract: Cell and gene therapy may alter the outcome of renal diseases, such as hereditary nephropathies, acute and chronic glomerulonephritis and allograft nephropathy. However, owing to blockade of many viral and cellular vehicles by the complex glomerular architecture, the exact nature of gene and cell delivery into specific renal compartments remains currently unknown. To study the interaction of viral vectors with a variety of renal cells and mesenchymal stem cells (MSCs), we employed a novel biological three-dimensional (3D) matrix comprised of fibrin microbeads (FMB) in comparison to monolayer cell culture. Our studies showed that renal cells of both established and primary lines can grow efficiently on FMB and differentiate into epithelial structures, as shown by electron microscopy. Gene delivery into renal cells in 3D was observed for several viral vectors and growth in 3D on FMB conferred resistance to renal cancer cells in the context of oncolytic adenoviruses. Finally, MSCs from various rodent species attached to FMB, grew robustly, survived for several weeks and could efficiently be transduced on FMB. Thus, on the basis of growth, differentiation and transduction of renal cells in 3D, FMB emerge as a novel 3D cellular microenvironment that differs substantially from monolayer cell cultures.
authors.affiliation: Cell and Gene Therapy Program, Department of Medicine, Division of Nephrology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.
authors.forename: N
authors.initials: N
authors.lastname: Shimony
authors.forename: R
authors.initials: R
authors.lastname: Gorodetsky
authors.forename: G
authors.initials: G
authors.lastname: Marx
authors.forename: D
authors.initials: D
authors.lastname: Gal
authors.forename: R
authors.initials: R
authors.lastname: Rivkin
authors.forename: A
authors.initials: A
authors.lastname: Ben-Ari
authors.forename: A
authors.initials: A
authors.lastname: Landsman
authors.forename: Y S
authors.initials: YS
authors.lastname: Haviv
mesh_terms: D002454:Cell Differentiation; D002460:Cell Line; D049109:Cell Proliferation; D002470:Cell Survival; D005337:Fibrin; D015316:Genetic Therapy / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D007668:Kidney / Q000166:cytology / Q000473:pathology / Q000648:ultrastructure; D007674:Kidney Diseases / Q000473:pathology / Q000628:therapy*; D007680:Kidney Neoplasms / Q000473:pathology / Q000628:therapy / Q000648:ultrastructure / Q000821:virology; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000648:ultrastructure; D008854:Microscopy, Electron; D008863:Microspheres; D050504:Oncolytic Viruses / Q000502:physiology
chemical_list: D005337:Fibrin