title: Loss of the Birt-Hogg-Dubé gene product folliculin induces longevity in a hypoxia-inducible factor-dependent manner.
abstract: Signaling through the hypoxia-inducible factor hif-1 controls longevity, metabolism, and stress resistance in Caenorhabditis elegans. Hypoxia-inducible factor (HIF) protein levels are regulated through an evolutionarily conserved ubiquitin ligase complex. Mutations in the VHL gene, encoding a core component of this complex, cause a multitumor syndrome and renal cell carcinoma in humans. In the nematode, deficiency in vhl-1 promotes longevity mediated through HIF-1 stabilization. However, this longevity assurance pathway is not yet understood. Here, we identify folliculin (FLCN) as a novel interactor of the hif-1/vhl-1 longevity pathway. FLCN mutations cause Birt-Hogg-Dubé syndrome in humans, another tumor syndrome with renal tumorigenesis reminiscent of the VHL disease. Loss of the C. elegans ortholog of FLCN F22D3.2 significantly increased lifespan and enhanced stress resistance in a hif-1-dependent manner. F22D3.2, vhl-1, and hif-1 control longevity by a mechanism distinct from insulin-like signaling. Daf-16 deficiency did not abrogate the increase in lifespan mediated by flcn-1. These findings define FLCN as a player in HIF-dependent longevity signaling and connect organismal aging, stress resistance, and regulation of longevity with the formation of renal cell carcinoma.
authors.affiliation: Department 2 of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany.
authors.forename: Hakam
authors.initials: H
authors.lastname: Gharbi
authors.forename: Francesca
authors.initials: F
authors.lastname: Fabretti
authors.forename: Puneet
authors.initials: P
authors.lastname: Bharill
authors.forename: Markus M
authors.initials: MM
authors.lastname: Rinschen
authors.forename: Sibylle
authors.initials: S
authors.lastname: Brinkkötter
authors.forename: Peter
authors.initials: P
authors.lastname: Frommolt
authors.forename: Volker
authors.initials: V
authors.lastname: Burst
authors.forename: Bernhard
authors.initials: B
authors.lastname: Schermer
authors.forename: Thomas
authors.initials: T
authors.lastname: Benzing
authors.forename: Roman-Ulrich
authors.initials: RU
authors.lastname: Müller
mesh_terms: D000818:Animals; D058249:Birt-Hogg-Dube Syndrome / Q000235:genetics*; D017173:Caenorhabditis elegans / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D029742:Caenorhabditis elegans Proteins / Q000235:genetics / Q000378:metabolism*; D044842:Cullin Proteins / Q000235:genetics / Q000378:metabolism*; D051858:Forkhead Transcription Factors; D018507:Gene Expression Regulation, Developmental; D006801:Humans; D008136:Longevity; D009154:Mutation; D055550:Protein Stability; D011518:Proto-Oncogene Proteins / Q000235:genetics / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*; D025521:Tumor Suppressor Proteins / Q000235:genetics / Q000378:metabolism*
chemical_list: D029742:Caenorhabditis elegans Proteins; D044842:Cullin Proteins; C476078:FLCN protein, human; D051858:Forkhead Transcription Factors; C541178:HIF-1 protein, C elegans; D011518:Proto-Oncogene Proteins; D012333:RNA, Messenger; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins; C541177:VHL-1 protein, C elegans; C108831:daf-16 protein, C elegans
keywords: Birt-Hogg-Dubé; C. elegans; Vhl; folliculin; hif; longevity