Reverse engineering the network: Identifying maternal components of gene regulation in early vertebrate development

Project supervisor: Mike Gilchrist (Systems Biology)

The Gilchrist lab is trying to understand the gene regulatory networks that control early vertebrate development, using Xenopus as a model system. We have preliminary data on gene activation before, during and shortly after the mid-blastula transition (MBT), enabling us to construct a catalogue of gene activation events in the early embryo. We understand how to go about finding the downstream targets of the transcription factors activated at this point, but it is not obvious how to find the trans-activating factors for those genes transcriptionally activated at MBT. This will require us to reverse engineer the network.

The project will focus on a small number of developmentally critical genes and proceed in phases: (i) determine a test set of six transcription factors of interest from our gene activation catalogue; (ii) understand the landscape of likely promoter and enhancer regions in the vicinity of these genes from the extensive histone modification ChIP-seq data available from the Veenstra group; experimental determination of active enhancers through (iii) exploration of the possibilities of using customized TAL Effectors proteins as enhancer/promoter blockers, or alternatively (iv) more traditional promoter analysis techniques; (v) use DNA affinity capture assay and mass spec. to determine transcription factors bound to the active enhancer regions, and finally (vi) validate the candidate upstream factors by knockdown and RNA-seq analysis.

Deliverables

  1. Functionally important enhancers for target gene set.
  2. List of verified activating transcription factors for target set.
  3. Protocol for application of method to the larger set of MBT-activated genes.

FUNDING AND NOTES

Informal inquiries should be addressed to Dr Gilchrist, m.gilchrist@nimr.mrc.ac.uk

Eligibility:

Go to http://www.devcom-itn.eu to learn about other project available in the ITN

To apply: Please download and complete the application form from the downloads section on the right-hand side. On receipt of your application your two referees will be contacted. Your application may not be considered until your references are in place.

The deadline for applications is: June 07, 2013

Downloads

Top of page

© MRC National Institute for Medical Research
The Ridgeway, Mill Hill, London NW7 1AA