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  The design and synthesis of new anticancer agents targeting DNA (SEARCEYM_U21SCIPVC)


   School of Pharmacy

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  Prof M Searcey, Dr A Beekman  No more applications being accepted  Funded PhD Project (Students Worldwide)

About the Project

Double stranded DNA is the classical structure that is well known and is the target for many antitumour agents that are currently used in the clinic. Over the last 20 years, higher order DNA has come to the fore as a potential target for the design of new, more selective anticancer agents and a plethora of molecules have been shown to bind to G-quadruplex and i-motif structures. A less well studied but simpler motif is that of the four-way junction, in which, for example, loops in the duplex structure form opposite one another. Several years ago, we showed that ligands could bind to four way junctions (1) and that it was possible to identify molecules that could promote the formation of such structures (2). Work by Segall and coworkers has shown that peptides can also bind to four way junctions and have both antibacterial and antitumour activity (3). We have also recently shown that it is possible to move from peptide structures to more drug like small molecules (4). In this project, we will investigate and design small molecules to target four way junction structures that are more drug like that our previous compounds. We will then test those compounds for antitumour and antibacterial activity. Ultimately our aim is to develop new molecules for a new target that will have potential as therapeutic agents.  

For more information on the supervisor for this project, please go here.

This is a PhD programme. The start date is 1st October 2021. The mode of study is full time. The studentship length is 3 years.

Entry requirements: 2:1 in Chemistry, pharmacology and drug discovery, pharmacy or related. 



Funding Notes

This PhD studentship is funded by UEA and covers stipend (£15,285 pa, 2020-21), tuition fees (Home only) and research costs for 3 years. International applicants (EU/non-EU) are eligible for UEA funded studentships but they are required to fund the difference between Home and International tuition fees (which for 2021-22 are detailed on the University’s fees pages at https://www.uea.ac.uk/about/university-information/finance-and-procurement/finance-information-for-students/tuition-fees)

References

1. Brogden, A; Hopcroft, N.; Searcey, M.; Cardin, C. J. Crystal structure of a small molecule-Holliday junction complex. Angew. Chem. 2007, 46, 3850-3854.
2. Howell, L. A.; Waller, Z. A. E.; Bowater, R.; O’Connell, M. A.; Searcey, M. A Small Molecule that Induces Assembly of a Four Way DNA Junction at Low Temperature. Chem. Commun. 2011, 47, 8262-8264
3. Dey, M.; Patra, S.; Su, L. Y.; Segall, A. M. Tumor cell death mediated by peptides that recognize branched intermediates of DNA replication and repair. PLoS One 2013, 8, e78751.
4. Beekman, A. M.; Cominetti, M. D.; Walpole, S. J.; Prabhu, S.; O’Connell, M. A.; Angulo, J.; Searcey, M. Identification of selective protein-protein interaction inhibitors using efficient in silico peptide-directed ligand design. Chem. Sci 2019, 10, 4502-4508

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