Jae Seok Yoon

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BACKGROUND & AIMS Pancreatic bicarbonate (HCO3-) secretion is important for a healthy pancreas as well as digestive physiology. However, how human pancreatic duct cells secrete copious amounts of HCO3- has long been a puzzle. Here, we report that a dynamic increase in the cystic fibrosis transmembrane conductance regulator (CFTR) HCO3- permeability by(More)
The formation of a pH gradient, which is characterized by intracellular alkalinization and extracellular acidification, plays a key role in the growth and metastasis of tumor cells. However, the underlying mechanisms of alkalinization-induced cell growth are not known. In this study, we investigated the roles of eukaryotic translation elongation factor 1(More)
During acute pancreatitis, protease-activated receptor 2 (PAR2) can be activated by interstitially released trypsin. In the mild form of pancreatitis, PAR2 activation exerts local protection against intrapancreatic damage, whereas, in the severe form of pancreatitis, PAR2 activation mediates some systemic complications. This study aimed to identify the(More)
Anoctamin 6 (ANO6) is a member of the recently identified TMEM16/anoctamin protein family comprising Ca2+-activated Cl− channels that generate outward-rectifying ionic currents in response to intracellular Ca2+ increase. ANO6 is also essential for Ca2+-dependent phospholipid scrambling required for blood coagulation. Selective serotonin reuptake inhibitors(More)
Na(+)/H(+) exchanger-1 (NHE-1) activity is known to play a critical role in the neuronal injury caused by glutamate. However, the underlying mechanism is not clear. This study shows that NHE-1 activation and its phosphorylation during glutamate exposure were attenuated by the inhibition of protein kinase C (PKC)-βI and -βII, leading to reduced neuronal(More)
SLC26A3 functions as a chloride/bicarbonate anion exchanger expressed in the secretory epithelial cells in the intestine, pancreas, and salivary glands. SLC26A3 has a C-terminal class I PDZ binding motif that assembles regulatory factors or other transporters by anchoring to various PDZ scaffold proteins. NHERF4 is an epithelial-enriched PDZ domain scaffold(More)
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