{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T07:01:13Z","timestamp":1770274873326,"version":"3.49.0"},"reference-count":41,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"5","license":[{"start":{"date-parts":[[2022,5,19]],"date-time":"2022-05-19T00:00:00Z","timestamp":1652918400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2022,5,19]],"date-time":"2022-05-19T00:00:00Z","timestamp":1652918400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":["Hepatology"],"published-print":{"date-parts":[[2022,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background and Aims<\/jats:title>\n            <jats:p>Chloride (Cl<jats:sup>\u2212<\/jats:sup>) channels in the apical membrane of biliary epithelial cells (BECs), also known as cholangiocytes, provide the driving force for biliary secretion. Although two Cl<jats:sup>\u2212<\/jats:sup> channels have been identified on a molecular basis, the Cystic Fibrosis Transmembrane Conductance Regulator and Transmembrane Member 16A, a third Cl<jats:sup>\u2212<\/jats:sup> channel with unique biophysical properties has been described. Leucine\u2010Rich Repeat\u2010Containing Protein 8, subfamily A (LRRC8A) is a newly identified protein capable of transporting Cl<jats:sup>\u2212<\/jats:sup> in other epithelium in response to cell swelling. The aim of the present study was to determine if LRRC8A represents the volume\u2010regulated anion channel in mouse BECs.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Approach and Results<\/jats:title>\n            <jats:p>Studies were performed in mouse small (MSC) and large (MLC) cholangiocytes. Membrane Cl<jats:sup>\u2212<\/jats:sup> currents were measured by whole\u2010cell patch\u2010clamp techniques and cell volume measurements were performed by calcein\u2010AM fluorescence. Exposure of either MSC or MLC to hypotonicity (190 mOsm) rapidly increased cell volume and activated Cl<jats:sup>\u2212<\/jats:sup> currents. Currents exhibited outward rectification, time\u2010dependent inactivation at positive membrane potentials, and reversal potential at 0 mV (E<jats:sub>Cl<\/jats:sub>). Removal of extracellular Cl<jats:sup>\u2212<\/jats:sup> or specific pharmacological inhibition of LRRC8A abolished currents. LRRC8A was detected in both MSC and MLC by reverse transcription polymerase chain reaction and confirmed by western blot. Transfection with LRRC8A small interfering RNA decreased protein levels by &gt;70% and abolished volume\u2010stimulated Cl<jats:sup>\u2212<\/jats:sup> currents.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>These results demonstrate that LRRC8A is functionally present in mouse BECs, contributes to volume\u2010activated Cl<jats:sup>\u2212<\/jats:sup> secretion, and, therefore, may be a target to modulate bile formation in the treatment of cholestatic liver disorders.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1002\/hep.32536","type":"journal-article","created":{"date-parts":[[2022,4,21]],"date-time":"2022-04-21T07:20:08Z","timestamp":1650525608000},"page":"1248-1258","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":4,"title":["Identification of the chloride channel, leucine\u2010rich repeat\u2010containing protein 8, subfamily a (LRRC8A), in mouse cholangiocytes"],"prefix":"10.1097","volume":"76","author":[{"given":"Nikolay","family":"Shcheynikov","sequence":"first","affiliation":[{"name":"Department of Pediatrics,University of Pittsburgh Medical Center Children\u2019s Hospital of Pittsburgh,Pittsburgh,Pennsylvania,USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1029-0182","authenticated-orcid":false,"given":"Kristy","family":"Boggs","sequence":"additional","affiliation":[{"name":"Department of Pediatrics,University of Pittsburgh Medical Center Children\u2019s Hospital of Pittsburgh,Pittsburgh,Pennsylvania,USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anthony","family":"Green","sequence":"additional","affiliation":[{"name":"Tissue and Research Pathology Core,UPMC Hillman Cancer Center,University of Pittsburgh,Pittsburgh,Pennsylvania,USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew 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