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dc.contributor.authorMcPhee, Christina K.
dc.contributor.authorLogan, Mary A.
dc.contributor.authorFreeman, Marc R.
dc.contributor.authorBaehrecke, Eric H.
dc.date2022-08-11T08:09:29.000
dc.date.accessioned2022-08-23T16:32:30Z
dc.date.available2022-08-23T16:32:30Z
dc.date.issued2010-06-24
dc.date.submitted2012-05-24
dc.identifier.citationNature. 2010 Jun 24;465(7301):1093-6. <a href="http://dx.doi.org/10.1038/nature09127">Link to article on publisher's site</a>
dc.identifier.issn0028-0836 (Linking)
dc.identifier.doi10.1038/nature09127
dc.identifier.pmid20577216
dc.identifier.urihttp://hdl.handle.net/20.500.14038/37899
dc.description.abstractAutophagy degrades cytoplasmic components that are required for cell survival in response to starvation. Autophagy has also been associated with cell death, but it is unclear how this is distinguished from autophagy during cell survival. Drosophila salivary glands undergo programmed cell death that requires autophagy genes, and engulfment of salivary gland cells by phagocytes does not appear to occur. Here we show that Draper (Drpr), the Drosophila melanogaster orthologue of the Caenorhabditis elegans engulfment receptor CED-1, is required for autophagy during cell death. Null mutations in, and salivary gland-specific knockdown of, drpr inhibit salivary gland degradation. Knockdown of drpr prevents the induction of autophagy in dying salivary glands, and expression of the Atg1 autophagy regulator in drpr mutants suppresses the failure in degradation of salivary glands. Surprisingly, drpr is required in the same dying salivary gland cells in which it regulates autophagy induction, but drpr knockdown does not prevent starvation-induced autophagy in the fat body, which is associated with survival. In addition, components of the conserved engulfment pathway are required for clearance of dying salivary glands. To our knowledge, this is the first example of an engulfment factor that is required for self-clearance of cells. Further, Drpr is the first factor that distinguishes autophagy that is associated with cell death from autophagy associated with cell survival.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=20577216&dopt=Abstract">Link to Article in PubMed</a>
dc.relation.urlhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892814/pdf/nihms-199345.pdf
dc.subjectAnimals
dc.subjectAnimals, Genetically Modified
dc.subjectAutophagy
dc.subjectCaspases
dc.subjectCell Death
dc.subjectCell Survival
dc.subjectDrosophila Proteins
dc.subjectDrosophila melanogaster
dc.subjectFat Body
dc.subjectFood Deprivation
dc.subjectGenes, Insect
dc.subjectMembrane Proteins
dc.subjectOligonucleotide Array Sequence Analysis
dc.subjectProtein-Serine-Threonine Kinases
dc.subjectSalivary Glands
dc.subjectNeuroscience and Neurobiology
dc.titleActivation of autophagy during cell death requires the engulfment receptor Draper
dc.typeJournal Article
dc.source.journaltitleNature
dc.source.volume465
dc.source.issue7301
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/neurobiology_pp/17
dc.identifier.contextkey2911132
html.description.abstract<p>Autophagy degrades cytoplasmic components that are required for cell survival in response to starvation. Autophagy has also been associated with cell death, but it is unclear how this is distinguished from autophagy during cell survival. Drosophila salivary glands undergo programmed cell death that requires autophagy genes, and engulfment of salivary gland cells by phagocytes does not appear to occur. Here we show that Draper (Drpr), the Drosophila melanogaster orthologue of the Caenorhabditis elegans engulfment receptor CED-1, is required for autophagy during cell death. Null mutations in, and salivary gland-specific knockdown of, drpr inhibit salivary gland degradation. Knockdown of drpr prevents the induction of autophagy in dying salivary glands, and expression of the Atg1 autophagy regulator in drpr mutants suppresses the failure in degradation of salivary glands. Surprisingly, drpr is required in the same dying salivary gland cells in which it regulates autophagy induction, but drpr knockdown does not prevent starvation-induced autophagy in the fat body, which is associated with survival. In addition, components of the conserved engulfment pathway are required for clearance of dying salivary glands. To our knowledge, this is the first example of an engulfment factor that is required for self-clearance of cells. Further, Drpr is the first factor that distinguishes autophagy that is associated with cell death from autophagy associated with cell survival.</p>
dc.identifier.submissionpathneurobiology_pp/17
dc.contributor.departmentCancer Biology
dc.contributor.departmentFreeman Lab
dc.contributor.departmentNeurobiology
dc.source.pages1093-6


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