1. Culture surface protein coatings affect the barrier properties and calcium signalling of hESC-RPE
- Author
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Boris N. Chichkov, Pyry Grönroos, Juhana Sorvari, Teemu O. Ihalainen, Taina Viheriälä, Tanja Ilmarinen, Anni Mörö, Heli Skottman, Soile Nymark, Sabrina Schlie-Wolter, Tampere University, and BioMediTech
- Subjects
collagen ,Cell ,Diseases ,Retinal Pigment Epithelium ,Stem cells ,Basement Membrane ,Macular Degeneration ,0302 clinical medicine ,Laminin ,Dewey Decimal Classification::500 | Naturwissenschaften ,0303 health sciences ,Multidisciplinary ,318 Medical biotechnology ,Membrane Glycoproteins ,biology ,Molecular medicine ,Chemistry ,Cell Differentiation ,Cell biology ,medicine.anatomical_structure ,Medicine ,ddc:500 ,Collagen Type IV ,Pluripotent Stem Cells ,Science ,Article ,Specimen Handling ,03 medical and health sciences ,Phagocytosis ,medicine ,Humans ,3125 Otorhinolaryngology, ophthalmology ,Calcium Signaling ,030304 developmental biology ,Basement membrane ,Cryopreservation ,Retinal pigment epithelium ,Membrane Proteins ,Embryonic stem cell ,Dewey Decimal Classification::600 | Technik ,Epithelium ,eye diseases ,Transplantation ,Cell culture ,biology.protein ,Calcium ,sense organs ,epithelium ,ddc:600 ,030217 neurology & neurosurgery ,Stem Cell Transplantation ,transplantation - Abstract
Human pluripotent stem cell-derived retinal pigment epithelium (RPE) transplantation is currently under evaluation as treatment for macular degeneration. For therapeutic applications, cryostorage during cell production is typically needed with potential consequences to cell functionality. We have previously shown that the culture substrate affects human embryonic stem cell-derived RPE (hESC-RPE) properties in fresh cultures. Here, we aimed to further identify the role of RPE basement membrane proteins type IV collagen (Col-IV), laminin (LN), and nidogen-1 in the maturation and functionality of hESC-RPE after cryopreservation. In addition to cell attachment and morphology, transepithelial electrical resistance, expression of key RPE proteins, phagocytosis capacity and Ca2+ signalling were analysed. After cryostorage, attachment of hESC-RPE on culture surfaces coated with Col-IV alone was poor. Combining Col-IV and LN with or without nidogen-1 significantly improved cell attachment and barrier properties of the epithelium. Furthermore, functional homogeneity of the hESC-RPE monolayer was enhanced in the presence of nidogen-1. Our results suggest that the choice of coating proteins for the cell culture may have implications to the functional properties of these cells after cryostorage cell banking.
- Published
- 2021