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Involvement of the actin and tubulin networks in the trafficking of V‐ATPase, NBCe1‐A and NBCe1‐B in a submandibular duct cell line

Cytoskeletal components are established players in protein trafficking in epithelial cells. The bicarbonate‐secreting epithelium of salivary ducts is equipped with several acid‐base transporters whose cellular distribution is altered after systemic acid‐base disturbances. Here we investigated the role of actin and tubulin in V‐ATPase and electrogenic NBC1 distribution under physiological and pathological conditions in vitro. Therefore, extracellular acidosis or alkalosis was induced in the presence or absence of cytochalasin D or colchicine.