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Regulatory interaction between the cystic fibrosis transmembrane conductance regulator and HCO3- salvage mechanisms in model systems and the mouse pancreatic duct

DC FieldValueLanguage
dc.contributor.author이민구-
dc.contributor.author김경환-
dc.contributor.author김주영-
dc.date.accessioned2016-02-19T11:17:20Z-
dc.date.available2016-02-19T11:17:20Z-
dc.date.issued2001-
dc.identifier.issn0021-9258-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/142814-
dc.description.abstractThe pancreatic duct expresses cystic fibrosis transmembrane conductance regulator (CFTR) and HCO3- secretory and salvage mechanisms in the luminal membrane. Although CFTR plays a prominent role in HCO3- secretion, the role of CFTR in HCO3- salvage is not known. In the present work, we used molecular, biochemical, and functional approaches to study the regulatory interaction between CFTR and the HCO3- salvage mechanism Na+/H+ exchanger isoform 3 (NHE3) in heterologous expression systems and in the native pancreatic duct. We found that CFTR regulates NHE3 activity by both acute and chronic mechanisms. In the pancreatic duct, CFTR increases expression of NHE3 in the luminal membrane. Thus, luminal expression of NHE3 was reduced by 53% in ducts of homozygote DeltaF508 mice. Accordingly, luminal Na+-dependent and HOE694- sensitive recovery from an acid load was reduced by 60% in ducts of DeltaF508 mice. CFTR and NHE3 were co-immunoprecipitated from PS120 cells expressing both proteins and the pancreatic duct of wild type mice but not from PS120 cells lacking CFTR or the pancreas of DeltaF508 mice. The interaction between CFTR and NHE3 required the COOH-terminal PDZ binding motif of CFTR, and mutant CFTR proteins lacking the C terminus were not co-immunoprecipitated with NHE3. Furthermore, when expressed in PS120 cells, wild type CFTR, but not CFTR mutants lacking the C-terminal PDZ binding motif, augmented cAMP-dependent inhibition of NHE3 activity by 31%. These findings reveal that CFTR controls overall HCO3- homeostasis by regulating both pancreatic ductal HCO3- secretory and salvage mechanisms.-
dc.description.statementOfResponsibilityopen-
dc.format.extent17236~17243-
dc.relation.isPartOfJournal of Biological Chemistry-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.subject.MESHAnimals-
dc.subject.MESHBase Sequence-
dc.subject.MESHBicarbonates/metabolism*-
dc.subject.MESHCarrier Proteins/genetics-
dc.subject.MESHCarrier Proteins/metabolism-
dc.subject.MESHCell Line-
dc.subject.MESHCricetinae-
dc.subject.MESHCricetulus-
dc.subject.MESHCulture Media, Serum-Free-
dc.subject.MESHCystic Fibrosis Transmembrane Conductance Regulator/chemistry-
dc.subject.MESHCystic Fibrosis Transmembrane Conductance Regulator/genetics-
dc.subject.MESHCystic Fibrosis Transmembrane Conductance Regulator/metabolism*-
dc.subject.MESHHomeostasis-
dc.subject.MESHKinetics-
dc.subject.MESHLung/metabolism-
dc.subject.MESHMice-
dc.subject.MESHModels, Biological-
dc.subject.MESHMolecular Sequence Data-
dc.subject.MESHMutagenesis, Site-Directed-
dc.subject.MESHPancreatic Ducts/metabolism*-
dc.subject.MESHPhosphoproteins/genetics-
dc.subject.MESHPhosphoproteins/metabolism-
dc.subject.MESHPhylogeny-
dc.subject.MESHRecombinant Proteins/chemistry-
dc.subject.MESHRecombinant Proteins/metabolism-
dc.subject.MESHReverse Transcriptase Polymerase Chain Reaction-
dc.subject.MESHSequence Deletion-
dc.subject.MESHSodium-Hydrogen Exchanger 3-
dc.subject.MESHSodium-Hydrogen Exchangers/metabolism*-
dc.subject.MESHTransfection-
dc.titleRegulatory interaction between the cystic fibrosis transmembrane conductance regulator and HCO3- salvage mechanisms in model systems and the mouse pancreatic duct-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Pharmacology (약리학)-
dc.contributor.googleauthorWooin Ahn-
dc.contributor.googleauthorKyung Hwan Kim-
dc.contributor.googleauthorJin Ah Lee-
dc.contributor.googleauthorJoo Young Kim-
dc.contributor.googleauthorJoo Young Choi-
dc.contributor.googleauthorOrson W. Moe-
dc.contributor.googleauthorSharon L. Milgram-
dc.contributor.googleauthorShmuel Muallem-
dc.contributor.googleauthorMin Goo Lee-
dc.identifier.doi10.1074/jbc.M011763200-
dc.admin.authorfalse-
dc.admin.mappingfalse-
dc.contributor.localIdA00942-
dc.contributor.localIdA02781-
dc.contributor.localIdA00311-
dc.relation.journalcodeJ01258-
dc.identifier.pmid11278980-
dc.contributor.alternativeNameLee, Min Goo-
dc.contributor.alternativeNameKim, Kyung Hwan-
dc.contributor.alternativeNameKim, Joo Young-
dc.contributor.affiliatedAuthorKim, Joo Young-
dc.contributor.affiliatedAuthorLee, Min Goo-
dc.contributor.affiliatedAuthorKim, Kyung Hwan-
dc.rights.accessRightsfree-
dc.citation.volume276-
dc.citation.number20-
dc.citation.startPage17236-
dc.citation.endPage17243-
dc.identifier.bibliographicCitationJournal of Biological Chemistry, Vol.276(20) : 17236-17243, 2001-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pharmacology (약리학교실) > 1. Journal Papers

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