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  • Protocol to visualize ion channel trafficking in acutely isolated rodent neurons using live-cell immunocytochemistry.

Protocol to visualize ion channel trafficking in acutely isolated rodent neurons using live-cell immunocytochemistry.

STAR protocols (2023-11-24)
Kirk D Haan, Thomas E Fisher
ABSTRACT

Here, we present a protocol for live-cell immunocytochemistry to demonstrate reversible translocation of ion channels to the neuronal cell surface. We describe steps for cell preparation and isolation, experimental treatment, antibody binding prior to fixation, specific pipetting techniques, troubleshooting, and expected outcomes of correct use of the protocol. This protocol will be useful to study regulated translocation of ion channels and other membrane proteins. For complete details on the use and execution of this protocol, please refer to Haan et al.1.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
U-73122 hydrate, powder
Sigma-Aldrich
Nifedipine, ≥98% (HPLC), powder
Sigma-Aldrich
Anti-Rabbit IgG (H+L), highly cross-adsorbed, CF 488A antibody produced in donkey, ~2 mg/mL, affinity isolated antibody
Sigma-Aldrich
Bisindolylmaleimide I, A highly selective, cell-permeable, and reversible protein kinase C (PKC) inhibitor (IC₅₀ = 10 nM) that is structurally similar to staurosporine.
Sigma-Aldrich
Dynasore hydrate