Raimundo, Nuno

[["dc.bibliographiccitation.firstpage","994"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Aging Cell"],["dc.bibliographiccitation.lastpage","1005"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Perić, Matea"],["dc.contributor.author","Lovrić, Anita"],["dc.contributor.author","Šarić, Ana"],["dc.contributor.author","Musa, Marina"],["dc.contributor.author","Bou Dib, Peter"],["dc.contributor.author","Rudan, Marina"],["dc.contributor.author","Nikolić, Andrea"],["dc.contributor.author","Sobočanec, Sandra"],["dc.contributor.author","Mikecin, Ana-Matea"],["dc.contributor.author","Dennerlein, Sven"],["dc.contributor.author","Milošević, Ira"],["dc.contributor.author","Vlahoviček, Kristian"],["dc.contributor.author","Raimundo, Nuno"],["dc.contributor.author","Kriško, Anita"],["dc.date.accessioned","2019-07-09T11:44:59Z"],["dc.date.available","2019-07-09T11:44:59Z"],["dc.date.issued","2017"],["dc.description.abstract","Protein quality control mechanisms, required for normal cellular functioning, encompass multiple functions related to protein production and maintenance. However, the existence of communication between proteostasis and metabolic networks and its underlying mechanisms remain elusive. Here, we report that enhanced chaperone activity and consequent improved proteostasis are sensed by TORC1 via the activity of Hsp82. Chaperone enrichment decreases the level of Hsp82, which deactivates TORC1 and leads to activation of Snf1/AMPK, regardless of glucose availability. This mechanism culminates in the extension of yeast replicative lifespan (RLS) that is fully reliant on both TORC1 deactivation and Snf1/AMPK activation. Specifically, we identify oxygen consumption increase as the downstream effect of Snf1 activation responsible for the entire RLS extension. Our results set a novel paradigm for the role of proteostasis in aging: modulation of the misfolded protein level can affect cellular metabolic features as well as mitochondrial activity and consequently modify lifespan. The described mechanism is expected to open new avenues for research of aging and age-related diseases."],["dc.identifier.doi","10.1111/acel.12623"],["dc.identifier.pmid","28613034"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14988"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59133"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","315997"],["dc.relation","316289"],["dc.relation","337327"],["dc.relation.issn","1474-9726"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","612"],["dc.title","TORC1-mediated sensing of chaperone activity alters glucose metabolism and extends lifespan."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","1266"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.lastpage","18"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Gowrisankaran, Sindhuja"],["dc.contributor.author","Houy, Sébastien"],["dc.contributor.author","del Castillo, Johanna G. Peña"],["dc.contributor.author","Steubler, Vicky"],["dc.contributor.author","Gelker, Monika"],["dc.contributor.author","Kroll, Jana"],["dc.contributor.author","Pinheiro, Paulo S."],["dc.contributor.author","Schwitters, Dirk"],["dc.contributor.author","Halbsgut, Nils"],["dc.contributor.author","Pechstein, Arndt"],["dc.contributor.author","van Weering, Jan R. T."],["dc.contributor.author","Maritzen, Tanja"],["dc.contributor.author","Haucke, Volker"],["dc.contributor.author","Raimundo, Nuno"],["dc.contributor.author","Sørensen, Jakob B."],["dc.contributor.author","Milosevic, Ira"],["dc.date.accessioned","2020-05-22T11:43:11Z"],["dc.date.accessioned","2021-10-27T13:22:12Z"],["dc.date.available","2020-05-22T11:43:11Z"],["dc.date.available","2021-10-27T13:22:12Z"],["dc.date.issued","2020"],["dc.description.abstract","Endophilins-A are conserved endocytic adaptors with membrane curvature-sensing and -inducing properties. We show here that, independently of their role in endocytosis, endophilin-A1 and endophilin-A2 regulate exocytosis of neurosecretory vesicles. The number and distribution of neurosecretory vesicles were not changed in chromaffin cells lacking endophilin-A, yet fast capacitance and amperometry measurements revealed reduced exocytosis, smaller vesicle pools and altered fusion kinetics. The levels and distributions of the main exocytic and endocytic factors were unchanged, and slow compensatory endocytosis was not robustly affected. Endophilin-A’s role in exocytosis is mediated through its SH3-domain, specifically via a direct interaction with intersectin-1, a coordinator of exocytic and endocytic traffic. Endophilin-A not able to bind intersectin-1, and intersectin-1 not able to bind endophilin-A, resulted in similar exocytic defects in chromaffin cells. Altogether, we report that two endocytic proteins, endophilin-A and intersectin-1, are enriched on neurosecretory vesicles and regulate exocytosis by coordinating neurosecretory vesicle priming and fusion."],["dc.identifier.doi","10.1038/s41467-020-14993-8"],["dc.identifier.pmid","30129015"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17335"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/92074"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/37"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | P02: Charakterisierung der ER-Mitochondrien-Kontakte und ihre Rolle in der Signalweiterleitung"],["dc.relation.eissn","2041-1723"],["dc.relation.orgunit","Universitätsmedizin Göttingen"],["dc.relation.workinggroup","RG Milosevic (Synaptic Vesicle Dynamics)"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","612"],["dc.title","Endophilin-A coordinates priming and fusion of neurosecretory vesicles via intersectin"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","overview_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","27"],["dc.bibliographiccitation.journal","Autophagy"],["dc.bibliographiccitation.lastpage","20"],["dc.contributor.author","Fernandez-Mosquera, Lorena"],["dc.contributor.author","Yambire, King Faisal"],["dc.contributor.author","Couto, Renata"],["dc.contributor.author","Pereyra, Leonardo"],["dc.contributor.author","Pabis, Kamil"],["dc.contributor.author","Ponsford, Amy H."],["dc.contributor.author","Diogo, Cátia V."],["dc.contributor.author","Stagi, Massimiliano"],["dc.contributor.author","Milošević, Ira"],["dc.contributor.author","Raimundo, Nuno"],["dc.date.accessioned","2019-07-09T11:51:24Z"],["dc.date.available","2019-07-09T11:51:24Z"],["dc.date.issued","2019"],["dc.description.abstract","Mitochondria are key organelles for cellular metabolism, and regulate several processes including cell death and macroautophagy/autophagy. Here, we show that mitochondrial respiratory chain (RC) deficiency deactivates AMP-activated protein kinase (AMPK, a key regulator of energy homeostasis) signaling in tissue and in cultured cells. The deactivation of AMPK in RC-deficiency is due to increased expression of the AMPK-inhibiting protein FLCN (folliculin). AMPK is found to be necessary for basal lysosomal function, and AMPK deactivation in RC-deficiency inhibits lysosomal function by decreasing the activity of the lysosomal Ca2+ channel MCOLN1 (mucolipin 1). MCOLN1 is regulated by phosphoinositide kinase PIKFYVE and its product PtdIns(3,5)P2, which is also decreased in RC-deficiency. Notably, reactivation of AMPK, in a PIKFYVE-dependent manner, or of MCOLN1 in RC-deficient cells, restores lysosomal hydrolytic capacity. Building on these data and the literature, we propose that downregulation of the AMPK-PIKFYVE-PtdIns(3,5)P2-MCOLN1 pathway causes lysosomal Ca2+ accumulation and impaired lysosomal catabolism. Besides unveiling a novel role of AMPK in lysosomal function, this study points to the mechanism that links mitochondrial malfunction to impaired lysosomal catabolism, underscoring the importance of AMPK and the complexity of organelle cross-talk in the regulation of cellular homeostasis. Abbreviation: ΔΨm: mitochondrial transmembrane potential; AMP: adenosine monophosphate; AMPK: AMP-activated protein kinase; ATG5: autophagy related 5; ATP: adenosine triphosphate; ATP6V0A1: ATPase, H+ transporting, lysosomal, V0 subbunit A1; ATP6V1A: ATPase, H+ transporting, lysosomal, V0 subbunit A; BSA: bovine serum albumin; CCCP: carbonyl cyanide-m-chlorophenylhydrazone; CREB1: cAMP response element binding protein 1; CTSD: cathepsin D; CTSF: cathepsin F; DMEM: Dulbecco's modified Eagle's medium; DMSO: dimethyl sulfoxide; EBSS: Earl's balanced salt solution; ER: endoplasmic reticulum; FBS: fetal bovine serum; FCCP: carbonyl cyanide-p-trifluoromethoxyphenolhydrazone; GFP: green fluorescent protein; GPN: glycyl-L-phenylalanine 2-naphthylamide; LAMP1: lysosomal associated membrane protein 1; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MCOLN1/TRPML1: mucolipin 1; MEF: mouse embryonic fibroblast; MITF: melanocyte inducing transcription factor; ML1N 2-GFP: probe used to detect PtdIns(3,5)P2 based on the transmembrane domain of MCOLN1; MTORC1: mechanistic target of rapamycin kinase complex 1; NDUFS4: NADH:ubiquinone oxidoreductase subunit S4; OCR: oxygen consumption rate; PBS: phosphate-buffered saline; pcDNA: plasmid cytomegalovirus promoter DNA; PCR: polymerase chain reaction; PtdIns3P: phosphatidylinositol-3-phosphate; PtdIns(3,5)P2: phosphatidylinositol-3,5-bisphosphate; PIKFYVE: phosphoinositide kinase, FYVE-type zinc finger containing; P/S: penicillin-streptomycin; PVDF: polyvinylidene fluoride; qPCR: quantitative real time polymerase chain reaction; RFP: red fluorescent protein; RNA: ribonucleic acid; SDS-PAGE: sodium dodecyl sulfate polyacrylamide gel electrophoresis; shRNA: short hairpin RNA; siRNA: small interfering RNA; TFEB: transcription factor EB; TFE3: transcription factor binding to IGHM enhancer 3; TMRM: tetramethylrhodamine, methyl ester, perchlorate; ULK1: unc-51 like autophagy activating kinase 1; ULK2: unc-51 like autophagy activating kinase 2; UQCRC1: ubiquinol-cytochrome c reductase core protein 1; v-ATPase: vacuolar-type H+-translocating ATPase; WT: wild-type."],["dc.identifier.doi","10.1080/15548627.2019.1586256"],["dc.identifier.pmid","30917721"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16120"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59941"],["dc.identifier.url","https://sfb1190.med.uni-goettingen.de/production/literature/publications/63"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/337327/EU//MITOPEXLYSONETWORK"],["dc.relation","SFB 1190: Transportmaschinen und Kontaktstellen zellulärer Kompartimente"],["dc.relation","SFB 1190 | P02: Charakterisierung der ER-Mitochondrien-Kontakte und ihre Rolle in der Signalweiterleitung"],["dc.relation.workinggroup","RG Milosevic (Synaptic Vesicle Dynamics)"],["dc.relation.workinggroup","RG Raimundo"],["dc.rights","CC BY-NC-ND 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc-nd/4.0"],["dc.subject.ddc","612"],["dc.title","Mitochondrial respiratory chain deficiency inhibits lysosomal hydrolysis"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]