Bicistronic Construct for Optogenetic Prosthesis of Ganglion Cell Receptive Field of Degenerative Retina

Doklady. Biochemistry and Biophysics
L E PetrovskayaA Yu Malyshev

Abstract

To perform optogenetic prosthetics of the retinal ganglion cell receptive field, a bicistronic genetic construct carrying the genes encoding the excitatory (channelrhodopsin-2) and inhibitory (Guillardia theta anion channelrhodopsin GtACR2) rhodopsins was created. A characteristic feature of this construct was the combination of these two genes with a mutant IRES insertion between them, which ensures the exact ratio of expression levels of the first and second genes in each transfected cell. Illumination of the central part of the neuron with light with a wavelength of 470 nm induced the action potential generation in the cell. Stimulation of the peripheral neuronal region with light induced the inhibition of action potential generation. Thus, using optogenetics methods, we simulated the ON-OFF interaction in the retinal ganglion cell receptive field. Theoretically, this construct can be used for optogenetic prosthetics of degenerative retina in the case of its delivery to the ganglion cells with lentiviral vectors.

Methods Mentioned

BETA
transfect
transfection

Software Mentioned

pCLAMP

Related Concepts

Related Feeds

Cell-Type-Specific Viral Vectors (ASM)

Viral vectors are used in biological research and therapy to deliver genetic material into cells. However, the efficiency of viral vectors varies depending on the cell type. Here is the latest research on cell-type-specific viral vectors.

Cell-Type-Specific Viral Vectors

Viral vectors are used in biological research and therapy to deliver genetic material into cells. However, the efficiency of viral vectors varies depending on the cell type. Here is the latest research on cell-type-specific viral vectors.

Cell-Type Specific Viral Vectors

Viral vectors are used in biological research and therapy to deliver genetic material into cells. However, the efficiency of viral vectors varies depending on the cell type. Here is the latest research on cell-type-specific viral vectors.