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Title: The auxin-inducible degradation (AID) system enables versatile conditional protein depletion in C. elegans

Journal Article · · Development (Cambridge)
DOI:https://doi.org/10.1242/dev.129635· OSTI ID:1627086
 [1];  [2];  [3];  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology; Howard Hughes Medical Inst., Chevy Chase, MD (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Life Sciences Division. Dept. of Genome Dynamics; California Inst. for Quantitative Biosciences, Berkeley, CA (United States)
  2. Univ. of California, San Francisco, CA (United States). Dept. of Cellular and Molecular Pharmacology
  3. Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology

Experimental manipulation of protein abundance in living cells or organisms is an essential strategy for investigation of biological regulatory mechanisms. Whereas powerful techniques for protein expression have been developed in Caenorhabditis elegans, existing tools for conditional disruption of protein function are far more limited. To address this, we have adapted the auxin-inducible degradation (AID) system discovered in plants to enable conditional protein depletion in C. elegans. We report that expression of a modified Arabidopsis TIR1 F-box protein mediates robust auxin-dependent depletion of degron-tagged targets. We document the effectiveness of this system for depletion of nuclear and cytoplasmic proteins in diverse somatic and germline tissues throughout development. Target proteins were depleted in as little as 20-30 min, and their expression could be re-established upon auxin removal. We have engineered strains expressing TIR1 under the control of various promoter and 3' UTR sequences to drive tissue-specific or temporally regulated expression. The degron tag can be efficiently introduced by CRISPR/Cas9-based genome editing. We have harnessed this system to explore the roles of dynamically expressed nuclear hormone receptors in molting, and to analyze meiosis-specific roles for proteins required for germ line proliferation. Together, our results demonstrate that the AID system provides a powerful new tool for spatiotemporal regulation and analysis of protein function in a metazoan model organism.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1627086
Journal Information:
Development (Cambridge), Vol. 142, Issue 24; ISSN 0950-1991
Publisher:
Company of BiologistsCopyright Statement
Country of Publication:
United States
Language:
English

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  • K., Heppert, Jennifer; D., Higgins, Christopher; J., Dickinson, Daniel
  • The University of North Carolina at Chapel Hill University Libraries https://doi.org/10.17615/zb1k-gh34
text January 2015

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