Electrophysiological characterization of photoreceptor ‐like cells in human inducible pluripotent stem cell‐derived retinal organoids during in vitro maturation

This study provides a comprehensive dataset describing the electrophysiological maturation of photoreceptor‐like cells in human inducible pluripotent stem cell‐derived ROs for precise and sensitive quality control during RO differentiation. AbstractRetinal organoids (ROs) derived from human inducible pluripotent stem cells (hiPSCs) exhibit considerable therapeutic potential. However, current quality control of ROs during in vitro differentiation is largely limited to the detection of molecular markers, often by immunostaining, polymerase chain reaction (PCR) assays and sequencing, often without proper functional assessments. As such, in the current study, we systemically characterized the physiological maturation of photoreceptor ‐like cells in hiPSC‐derived ROs. By performing patch‐clamp recordings from photoreceptor‐like cells in ROs at distinct differentiation stages (ie, Differentiation Day [D]90, D150, and D200), we determined the electrophysiological properties of the plasma membrane and several characteristic ion channels closely associated with the physiological functions of the photoreceptors. Ionic hallmarks, such as hyperpolarization‐activated cyclic nucleotide‐gated (HCN) channels and cyclic nucleotide‐gated (CNG) channels, matured progressively during differentiation. After D200 in culture, t hese characteristic currents closely resembled those in macaque or human native photoreceptors. Furthermore, we demonstrated that the hyperpolarization‐a...
Source: Stem Cells - Category: Stem Cells Authors: Tags: Tissue ‐Specific Stem Cells Source Type: research