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Gene transcription is coordinated with, but not
dependent on, cell divisions during C. elegans
embryonic fate specification!
Gautham	
  Nair,	
  Travis	
  Walton,	
  John	
  Isaac	
  Murray,	
  and	
  Arjun	
  Raj	
  
University	
  of	
  Pennsylvania	
  Department	
  of	
  Bioengineering	
  
University	
  of	
  Pennsylvania	
  Department	
  of	
  GeneDcs	
  
RNA-FISH!
10µm!
RNA!
Automated
Lineaging!
Gut genes!
Wild type
20C!
Transcription
is slowed
LESS?
Transcription
is slowed
MORE?
Transcription
is slowed
THE SAME?
Transcription
is slowed
THE SAME
Transcription
is slowed
THE SAME
- many other genes
- clk-1 mutant slowdown
Transcription
is slowed
THE SAME
- many other genes
- clk-1 mutant slowdown
Transcription
is slowed
THE SAME
Total Number of Cells in Embryo
Total Number of Cells in Embryo
Total Number of Cells in Embryo
Transcription is
DEPENDENT
on cell divisions?
emb-29(g52)
mutant
Total Number of Cells in Embryo
Transcription is
DEPENDENT
on cell divisions?
NO
Transcription is
DEPENDENT
on cell divisions?
NO
- elt-2 in E lineage
- hlh-1 and
unc-120
in muscle
pathway
Transcription is
DEPENDENT
on cell divisions?
NO
- elt-2 in E lineage
- hlh-1 and
unc-120
in muscle
pathway
Transcription is
DEPENDENT
on cell divisions?
NO
- elt-2 in E lineage
- hlh-1 and
unc-120
in muscle
pathway
Gene transcription is coordinated with, but not
dependent on, cell divisions during C. elegans
embryonic fate specification!
Gene transcription is coordinated with, but not
dependent on, cell divisions during C. elegans
embryonic fate specification!
Funding:	
  
	
  
HHMI	
  Life	
  Sciences	
  Research	
  FoundaDon	
  Fellowship	
  
Burroughs-­‐Wellcome	
  Fund	
  
NIH	
  New	
  Innovator	
  Award	
  
Penn	
  Genome	
  FronDers	
  InsDtute	
  
Pennsylvania	
  Department	
  of	
  Health	
  

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Worm timing paper