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Title: A synthetic circuit for selectively arresting daughter cells to create aging populations

Journal Article · · Nucleic Acids Research
DOI: https://doi.org/10.1093/nar/gkq075 · OSTI ID:1625470
 [1];  [2];  [3]
  1. Harvard Medical School, Boston, MA (United States). Dept. of Systems Biology; DOE/OSTI
  2. Harvard Medical School, Boston, MA (United States). Dept. of Systems Biology
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

The ability to engineer genetic programs governing cell fate will permit new safeguards for engineered organisms and will further the biological understanding of differentiation and aging. Here, we have designed, built and implemented a genetic device in the budding yeast Saccharomyces cerevisiae that controls cell-cycle progression selectively in daughter cells. The synthetic device was built in a modular fashion by combining timing elements that are coupled to the cell cycle, i.e. cell-cycle specific promoters and protein degradation domains, and an enzymatic domain which conditionally confers cell arrest. Thus, in the presence of a drug, the device is designed to arrest growth of only newly-divided daughter cells in the population. Indeed, while the engineered cells grow normally in the absence of drug, with the drug the engineered cells display reduced, linear growth on the population level. Fluorescence microscopy of single cells shows that the device induces cell arrest exclusively in daughter cells and radically shifts the age distribution of the resulting population towards older cells. This device, termed the ‘daughter arrester’, provides a blueprint for more advanced devices that mimic developmental processes by having control over cell growth and death.

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:
1625470
Journal Information:
Nucleic Acids Research, Journal Name: Nucleic Acids Research Journal Issue: 8 Vol. 38; ISSN 0305-1048
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English

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NAD(P)HX repair deficiency causes central metabolic perturbations in yeast and human cells posted_content July 2018
Introduction of customized inserts for streamlined assembly and optimization of BioBrick synthetic genetic circuits journal December 2010
Construction of hybrid regulated mother-specific yeast promoters for inducible differential gene expression journal March 2018
Integrative modules for efficient genome engineering in yeast journal June 2017
Microfluidic Platforms for Yeast-Based Aging Studies journal September 2016
The development and characterization of synthetic minimal yeast promoters journal July 2015
Introduction of customized inserts for streamlined assembly and optimization of BioBrick synthetic genetic circuits journal December 2010
Construction of hybrid regulated mother-specific yeast promoters for inducible differential gene expression journal March 2018