The cyclin-dependent kinase PITSLRE/CDK11 is required for successful autophagy

Simon Wilkinson, Daniel Croft, Jim O'Prey, Arenda Meedendorp, Margaret O’Prey, Christine Dufès, Kevin Ryan

Research output: Contribution to journalArticle

21 Citations (Scopus)
159 Downloads (Pure)

Abstract

(Macro)autophagy is a membrane-trafficking process that serves to sequester cellular constituents in organelles termed autophagosomes, which target their degradation in the lysosome. Autophagy operates at basal levels in all cells where it serves as a homeostatic mechanism to maintain cellular integrity. The levels and cargoes of autophagy can, however, change in response to a variety of stimuli, and perturbations in autophagy are known to be involved in the aetiology of various human diseases. Autophagy must therefore be tightly controlled. We report here that the Drosophila cyclin-dependent kinase PITSLRE is a modulator of autophagy. Loss of the human PITSLRE orthologue, CDK11, initially appears to induce autophagy, but at later time points CDK11 is critically required for autophagic flux and cargo digestion. Since PITSLRE/CDK11 regulates autophagy in both Drosophila and human cells, this kinase represents a novel phylogenetically conserved component of the autophagy machinery.
Original languageEnglish
Pages (from-to)1295-1301
Number of pages7
JournalAutophagy
Volume7
Issue number11
DOIs
Publication statusPublished - Nov 2011

Keywords

  • cyclin-dependent kinase
  • enzymes
  • pharmacology
  • (macro)autophagy

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    Wilkinson, S., Croft, D., O'Prey, J., Meedendorp, A., O’Prey, M., Dufès, C., & Ryan, K. (2011). The cyclin-dependent kinase PITSLRE/CDK11 is required for successful autophagy. Autophagy, 7(11), 1295-1301. https://doi.org/10.4161/auto.7.11.16646