nPKCε, a P2Y2-R downstream effector in regulated mucin secretion from airway goblet cells

نویسندگان

  • Camille Ehre
  • Yunxiang Zhu
  • Lubna H. Abdullah
  • John Olsen
  • Keiichi I. Nakayama
  • Keiko Nakayama
  • Robert O. Messing
  • C. William Davis
چکیده

Camille Ehre, Yunxiang Zhu, Lubna H. Abdullah, John Olsen, Keiichi I. Nakayama, Keiko Nakayama, Robert O. Messing, and C. William Davis Cystic Fibrosis/Pulmonary Research and Treatment Center, Department of Cell and Molecular Physiology, University of North Carolina, Chapel Hill, North Carolina; Department of Molecular Genetics, Medical Institute of Bioregulation, Kyushu University, Fukuoda, Japan; and Ernest Gallo Clinic & Research Center, University of California-San Franciso, San Francisco, California

منابع مشابه

Mucin secretion and PKC isoforms in SPOC1 goblet cells: differential activation by purinergic agonist and PMA.

SPOC1 cells, which are a mucin-secreting model of rat airway goblet cells, possess a luminal P2Y2 purinoceptor through which UTP, ATP, and ATPgammaS stimulate secretion with EC50 values of approximately 3 microM. PMA elicits mucin secretion with high EC50 (75 nM) and saturation (300 nM) values. For the first time in airway mucin-secreting cells, the PKC isoforms expressed and activated by a sec...

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Barrier role of actin filaments in regulated mucin secretion from airway goblet cells.

Airway goblet cells secrete mucin onto mucosal surfaces under the regulation of an apical, phospholipase C/G(q)-coupled P2Y(2) receptor. We tested whether cortical actin filaments negatively regulate exocytosis in goblet cells by forming a barrier between secretory granules and plasma membrane docking sites as postulated for other secretory cells. Immunostaining of human lung tissues and SPOC1 ...

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Ca21 and protein kinase C activation of mucin granule exocytosis in permeabilized SPOC1 cells

Scott, C. E., Lubna H. Abdullah, and C. William Davis. Ca21 and protein kinase C activation of mucin granule exocytosis in permeabilized SPOC1 cells. Am. J. Physiol. 275 (Cell Physiol. 44): C285–C292, 1998.—Mucin secretion by airway goblet cells is under the control of apical P2Y2, phospholipase C-coupled purinergic receptors. In SPOC1 cells, the mobilization of intracellular Ca21 by ionomycin ...

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Ca2+ and protein kinase C activation of mucin granule exocytosis in permeabilized SPOC1 cells.

Mucin secretion by airway goblet cells is under the control of apical P2Y2, phospholipase C-coupled purinergic receptors. In SPOC1 cells, the mobilization of intracellular Ca2+ by ionomycin or the activation of protein kinase C (PKC) by phorbol 12-myristate 13-acetate (PMA) stimulates mucin secretion in a fully additive fashion [L. H. Abdullah, J. D. Conway, J. A. Cohn, and C. W. Davis. Am. J. ...

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Entamoeba histolytica-Induced Mucin Exocytosis Is Mediated by VAMP8 and Is Critical in Mucosal Innate Host Defense

Intestinal mucus secretion is critical in maintaining mucosal host defense against a myriad of pathogens by preventing direct association with the epithelium. Entamoeba histolytica specifically binds colonic MUC2 mucin and also induces potent hypersecretion from goblet cells; however, characterization of the nature of the mechanisms controlling mucus release remains elusive. In this report, we ...

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تاریخ انتشار 2007