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Cytosolic Ca2+ measurements by ratiometric fluorescence microscopy in melanoma cells.

STAR protocols (2021-02-04)
Tiago Rodrigues, Letícia Silva Ferraz
ABSTRACT

Cytosolic Ca2+ levels are maintained at low nanomolar concentrations, and disruption of Ca2+ homeostasis is associated with cell/tissue damage. Thus, methods have been developed to accurately assess cellular Ca2+ levels, each with intrinsic advantages and disadvantages. Here, we present in detail a ratiometric fluorometric method for cytosolic Ca2+ measurement in cultured melanoma cells using Fura 2-AM cell loading and fluorescence microscopy imaging. For complete details on the use and execution of this protocol, please refer to Esteves et al. (2020).

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Dulbecco′s Modified Eagle′s Medium - high glucose, With 4500 mg/L glucose and L-glutamine, without sodium bicarbonate, powder, suitable for cell culture