2024
Calcium flow at ER-TGN contact sites facilitates secretory cargo export
Ramazanov B, Parchure A, Di Martino R, Kumar A, Chung M, Kim Y, Griesbeck O, Schwartz M, Luini A, von Blume J. Calcium flow at ER-TGN contact sites facilitates secretory cargo export. Molecular Biology Of The Cell 2024, 35: ar50. PMID: 38294859, PMCID: PMC11064664, DOI: 10.1091/mbc.e23-03-0099.Peer-Reviewed Original Research
2022
Quantification of Protein Exit at the Trans-Golgi Network
Tran M, Kim Y, von Blume J. Quantification of Protein Exit at the Trans-Golgi Network. Methods In Molecular Biology 2022, 2557: 583-594. PMID: 36512239, DOI: 10.1007/978-1-0716-2639-9_35.Peer-Reviewed Original ResearchConceptsTrans-Golgi networkProtein exportSecretory pathwaySelective hooks (RUSH) systemCell biological approachesProtein of interestPulse-chase experimentsProtein exitProtein sortingExport kineticsCellular homeostasisProtein transportDifferent cargoesLive cellsBiological approachesRUSH systemProteinPathwayTraffickingHomeostasisExportCargoSortingCompartmentsCells
2021
Calcium levels in the Golgi complex regulate clustering and apical sorting of GPI-APs in polarized epithelial cells
Lebreton S, Paladino S, Liu D, Nitti M, von Blume J, Pinton P, Zurzolo C. Calcium levels in the Golgi complex regulate clustering and apical sorting of GPI-APs in polarized epithelial cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 2021, 118: e2014709118. PMID: 34389665, PMCID: PMC8379914, DOI: 10.1073/pnas.2014709118.Peer-Reviewed Original ResearchConceptsApical sortingGPI-APsCholesterol-dependent clusteringGolgi-resident proteinsPlasma membrane organizationPolarized epithelial cellsEpithelial cellsDiverse vital functionsResident proteinsMolecular machinerySecretory cargoMembrane organizationGolgi eventUnexpected roleGolgi complexSpecific machineryGolgiBasolateral surfaceApical surfaceCab45SPCA1Vital functionsMachinerySortingProteinSending out molecules from the TGN
Ramazanov BR, Tran ML, von Blume J. Sending out molecules from the TGN. Current Opinion In Cell Biology 2021, 71: 55-62. PMID: 33706234, PMCID: PMC8328904, DOI: 10.1016/j.ceb.2021.02.005.Peer-Reviewed Original ResearchConceptsTrans-Golgi networkEndoplasmic reticulum contact sitesCell-cell communicationExtracellular matrix proteinsMembrane traffickingCargo proteinsCargo sortingTGN structureTransmembrane proteinPlasma membraneContact sitesExciting linkSoluble proteinMatrix proteinsSorting mechanismProteinTransport carriersMajor open questionsSortingMembraneNovel typeTraffickingMachineryOrganismsVesiclesRetention Using Selective Hooks (RUSH) Cargo Sorting Assay for Protein Vesicle Tracking in HeLa Cells.
Pacheco-Fernandez N, Pakdel M, Von Blume J. Retention Using Selective Hooks (RUSH) Cargo Sorting Assay for Protein Vesicle Tracking in HeLa Cells. Bio-protocol 2021, 11: e3936. PMID: 33796610, PMCID: PMC8005885, DOI: 10.21769/bioprotoc.3936.Peer-Reviewed Original ResearchSecretory pathwaySelective hooks (RUSH) systemProtein sortingVesicle traffickingSpecific cargoCargo traffickingProtein cargoTrafficking dynamicsProtein dynamicsVesicle trackingBiotin additionHeLa cellsFluorescent vesiclesTraffickingSorting assaysPathwayCargoCellsProteinExcellent toolSuch studiesVesiclesBetter understandingRegulationSorting
2020
Fam20C regulates protein secretion by Cab45 phosphorylation
Hecht TK, Blank B, Steger M, Lopez V, Beck G, Ramazanov B, Mann M, Tagliabracci V, von Blume J. Fam20C regulates protein secretion by Cab45 phosphorylation. Journal Of Cell Biology 2020, 219: e201910089. PMID: 32422653, PMCID: PMC7265331, DOI: 10.1083/jcb.201910089.Peer-Reviewed Original Research
2019
Lipid‐dependent coupling of secretory cargo sorting and trafficking at the trans‐Golgi network
von Blume J, Hausser A. Lipid‐dependent coupling of secretory cargo sorting and trafficking at the trans‐Golgi network. FEBS Letters 2019, 593: 2412-2427. PMID: 31344259, PMCID: PMC8048779, DOI: 10.1002/1873-3468.13552.Peer-Reviewed Original Research
2018
Activity of the SPCA1 Calcium Pump Couples Sphingomyelin Synthesis to Sorting of Secretory Proteins in the Trans-Golgi Network
Deng Y, Pakdel M, Blank B, Sundberg EL, Burd CG, von Blume J. Activity of the SPCA1 Calcium Pump Couples Sphingomyelin Synthesis to Sorting of Secretory Proteins in the Trans-Golgi Network. Developmental Cell 2018, 47: 464-478.e8. PMID: 30393074, PMCID: PMC6261503, DOI: 10.1016/j.devcel.2018.10.012.Peer-Reviewed Original ResearchConceptsTrans-Golgi networkTGN membranesCell surface transportProtein sortingTrafficking pathwaysSecretion pathwaySecretory proteinsSphingomyelin synthesisSorting mechanismLipid synthesisProteinVesicular carriersCab45Sphingomyelin contentNew lipidSortingPrincipal functionMembranePathwayCore componentLipidsGolgiSurface transportExportActivityExploring new routes for secretory protein export from the trans-Golgi network
Pakdel M, von Blume J. Exploring new routes for secretory protein export from the trans-Golgi network. Molecular Biology Of The Cell 2018, 29: 235-240. PMID: 29382805, PMCID: PMC5996961, DOI: 10.1091/mbc.e17-02-0117.Peer-Reviewed Original ResearchConceptsSecretory cargoSecretory proteinsCytoplasmic actin cytoskeletonMajor sorting stationTrans-Golgi networkGolgi residentsProtein exportGolgi networkActin cytoskeletonATPase SPCA1Cellular compartmentsTissue homeostasisSorting stationSoluble proteinTGNLysosomal hydrolasesOverall pathwayLuminal CaRecent discoveryProteinCargoSpecific carrierSortingCellsFinal destination
2017
Cab45—Unraveling key features of a novel secretory cargo sorter at the trans-Golgi network
Blank B, von Blume J. Cab45—Unraveling key features of a novel secretory cargo sorter at the trans-Golgi network. European Journal Of Cell Biology 2017, 96: 383-390. PMID: 28372832, DOI: 10.1016/j.ejcb.2017.03.001.Peer-Reviewed Original ResearchConceptsMolecular functionsCargo moleculesCytoplasmic actin cytoskeletonSpecific cargo moleculesTransmembrane cargo receptorsTrans-Golgi networkMannose-6-phosphate receptorCargo receptorsGolgi networkActin cytoskeletonATPase SPCA1Secreted proteinsPlasma membraneSecretory proteinsExtracellular proteasesCab45Sorting mechanismSurface receptorsProteinExtracellular spaceSpecific carrierPossible roleFinal destinationSortingReceptors
2016
Secretory cargo sorting by Ca2+-dependent Cab45 oligomerization at the trans-Golgi network
Crevenna AH, Blank B, Maiser A, Emin D, Prescher J, Beck G, Kienzle C, Bartnik K, Habermann B, Pakdel M, Leonhardt H, Lamb DC, von Blume J. Secretory cargo sorting by Ca2+-dependent Cab45 oligomerization at the trans-Golgi network. Journal Of Cell Biology 2016, 213: 305-314. PMID: 27138253, PMCID: PMC4862333, DOI: 10.1083/jcb.201601089.Peer-Reviewed Original ResearchConceptsTrans-Golgi networkSecretory cargoSecretory proteinsSpecific cargo moleculesTransmembrane cargoCargo moleculesSuperresolution microscopyIntact cellsCab45Lysosomal hydrolasesExtracellular spaceDependent mannerCargoProteinOligomerizationSortingHydrolasesDependent changesMicrodomainsMutationsOligomersElucidationCellsCa2
2014
Cofilin recruits F-actin to SPCA1 and promotes Ca2+-mediated secretory cargo sorting
Kienzle C, Basnet N, Crevenna AH, Beck G, Habermann B, Mizuno N, von Blume J. Cofilin recruits F-actin to SPCA1 and promotes Ca2+-mediated secretory cargo sorting. Journal Of Cell Biology 2014, 206: 635-654. PMID: 25179631, PMCID: PMC4151145, DOI: 10.1083/jcb.201311052.Peer-Reviewed Original ResearchSecretory cargo sorting at the trans-Golgi network
Kienzle C, von Blume J. Secretory cargo sorting at the trans-Golgi network. Trends In Cell Biology 2014, 24: 584-593. PMID: 24841758, DOI: 10.1016/j.tcb.2014.04.007.Peer-Reviewed Original ResearchConceptsTrans-Golgi networkCytoplasmic actin cytoskeletonPlasma membrane deliverySubset of proteinsNovel sorting mechanismKey cellular eventsSecretory cargoActin cytoskeletonCellular eventsBinding proteinLysosomal hydrolasesSorting mechanismProteinNormal physiologySuccessful sortingRecent discoverySortingCab45CytoskeletonHydrolasesSPCA1ATPaseRegulationPhysiologyCargo
2012
Cab45 is required for Ca2+-dependent secretory cargo sorting at the trans-Golgi network
von Blume J, Alleaume AM, Kienzle C, Carreras-Sureda A, Valverde M, Malhotra V. Cab45 is required for Ca2+-dependent secretory cargo sorting at the trans-Golgi network. Journal Of Cell Biology 2012, 199: 1057-1066. PMID: 23266954, PMCID: PMC3529532, DOI: 10.1083/jcb.201207180.Peer-Reviewed Original ResearchMeSH KeywordsCalciumCalcium SignalingCalcium-Binding ProteinsCartilage Oligomeric Matrix ProteinCathepsin DExtracellular Matrix ProteinsGene Knockdown TechniquesGlycoproteinsHeLa CellsHomeostasisHumansMatrilin ProteinsProtein BindingProtein IsoformsProtein TransportRNA InterferenceSecretory PathwayTrans-Golgi Network
2011
ADF/Cofilin Regulates Secretory Cargo Sorting at the TGN via the Ca2+ ATPase SPCA1
von Blume J, Alleaume AM, Cantero-Recasens G, Curwin A, Carreras-Sureda A, Zimmermann T, van Galen J, Wakana Y, Valverde MA, Malhotra V. ADF/Cofilin Regulates Secretory Cargo Sorting at the TGN via the Ca2+ ATPase SPCA1. Developmental Cell 2011, 20: 652-662. PMID: 21571222, DOI: 10.1016/j.devcel.2011.03.014.Peer-Reviewed Original Research