Identification of autophagosome-associated proteins and regulators by quantitative proteomic analysis and genetic screens
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Identification of autophagosome-associated proteins and regulators by quantitative proteomic analysis and genetic screens. / Dengjel, Jörn; Høyer-Hansen, Maria; Nielsen, Maria O; Eisenberg, Tobias; Harder, Lea Mørch; Schandorff, Søren; Farkas, Thomas; Kirkegaard, Thomas; Becker, Andrea C; Schroeder, Sabrina; Vanselow, Katja; Lundberg, Emma; Nielsen, Mogens Møller; Kristensen, Anders Riis; Akimov, Vyacheslav; Bunkenborg, Jakob; Madeo, Frank; Jaattela, Marja; Andersen, Jens S.
I: Molecular & Cellular Proteomics, Bind 11, Nr. 3, 2012, s. M111.014035.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Identification of autophagosome-associated proteins and regulators by quantitative proteomic analysis and genetic screens
AU - Dengjel, Jörn
AU - Høyer-Hansen, Maria
AU - Nielsen, Maria O
AU - Eisenberg, Tobias
AU - Harder, Lea Mørch
AU - Schandorff, Søren
AU - Farkas, Thomas
AU - Kirkegaard, Thomas
AU - Becker, Andrea C
AU - Schroeder, Sabrina
AU - Vanselow, Katja
AU - Lundberg, Emma
AU - Nielsen, Mogens Møller
AU - Kristensen, Anders Riis
AU - Akimov, Vyacheslav
AU - Bunkenborg, Jakob
AU - Madeo, Frank
AU - Jaattela, Marja
AU - Andersen, Jens S
PY - 2012
Y1 - 2012
N2 - Autophagy is one of the major intracellular catabolic pathways, but little is known about the composition of autophagosomes. To study the associated proteins, we isolated autophagosomes from human breast cancer cells using two different biochemical methods and three stimulus types: amino acid deprivation or rapamycin or concanamycin A treatment. The autophagosome-associated proteins were dependent on stimulus, but a core set of proteins was stimulus-independent. Remarkably, proteasomal proteins were abundant among the stimulus-independent common autophagosome-associated proteins, and the activation of autophagy significantly decreased the cellular proteasome level and activity supporting interplay between the two degradation pathways. A screen of yeast strains defective in the orthologs of the human genes encoding for a common set of autophagosome-associated proteins revealed several regulators of autophagy, including subunits of the retromer complex. The combined spatiotemporal proteomic and genetic data sets presented here provide a basis for further characterization of autophagosome biogenesis and cargo selection.
AB - Autophagy is one of the major intracellular catabolic pathways, but little is known about the composition of autophagosomes. To study the associated proteins, we isolated autophagosomes from human breast cancer cells using two different biochemical methods and three stimulus types: amino acid deprivation or rapamycin or concanamycin A treatment. The autophagosome-associated proteins were dependent on stimulus, but a core set of proteins was stimulus-independent. Remarkably, proteasomal proteins were abundant among the stimulus-independent common autophagosome-associated proteins, and the activation of autophagy significantly decreased the cellular proteasome level and activity supporting interplay between the two degradation pathways. A screen of yeast strains defective in the orthologs of the human genes encoding for a common set of autophagosome-associated proteins revealed several regulators of autophagy, including subunits of the retromer complex. The combined spatiotemporal proteomic and genetic data sets presented here provide a basis for further characterization of autophagosome biogenesis and cargo selection.
KW - Amino Acids
KW - Antibodies, Monoclonal
KW - Antiviral Agents
KW - Autophagy
KW - Breast Neoplasms
KW - Electrophoresis, Polyacrylamide Gel
KW - Female
KW - Genetic Testing
KW - Green Fluorescent Proteins
KW - Humans
KW - Immunoprecipitation
KW - Immunosuppressive Agents
KW - Isotope Labeling
KW - Lysosomes
KW - Macrolides
KW - Phagosomes
KW - Proteins
KW - Proteomics
KW - Saccharomyces cerevisiae
KW - Sirolimus
KW - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
KW - Starvation
KW - Tumor Cells, Cultured
U2 - 10.1074/mcp.M111.014035
DO - 10.1074/mcp.M111.014035
M3 - Journal article
C2 - 22311637
VL - 11
SP - M111.014035
JO - Molecular and Cellular Proteomics
JF - Molecular and Cellular Proteomics
SN - 1535-9476
IS - 3
ER -
ID: 38488555