Abstract
Human and other primate retinal Müller cells display dominating K + currents as well as other membrane conductances that may change in cases of retinal pathology. Because the use of human and primate tissue is limited by reasons of availability, a method for long-term storage of these cells is desirable. We describe a cryopreservation method in which isolated Müller cells are stored in liquid nitrogen. After thawing, the cells can be used for patch-clamp experiments immediately, without culturing. We show that the main electrophysiological properties are not altered by this method and that voltage- and ligand-gated currents can be recorded from cryopreserved cells even after 2-years storage.
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