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  RNA processing and eukaryotic gene expression


   School of Biosciences

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Dr S Brogna  Applications accepted all year round  Competition Funded PhD Project (Students Worldwide)

About the Project

Pre-mRNA processing and other RNA based mechanisms expand the genome functionality much above that possible with combinatorial regulatory networks based on single-protein genes. The added plasticity associated with alternative pre-mRNA processing and non-protein-coding RNAs is probably what has allowed the evolution of complex structures such as the animal brain. It is envisaged that furthering the understanding of these mechanism will provide additional tools to treat human diseases caused by mutations altering RNA metabolism.

Our research is directed toward further understanding some as yet not well understood aspects of pre-mRNA processing and we are particularly interested in understanding the molecular mechanisms that connect pre-mRNA processing with translation. In this regard we study nonsense mediated mRNA decay (NMD) and the molecular mechanism linking it with pre-mRNA splicing. We are also investigating whether ribosomal subunits have a nuclear function and in particular if they associate with nuclear transcripts.

We are looking to recruit highly motivated PhD students in any of the following projects. All projects will provide training in advance molecular biology techniques, Drosophila or yeast molecular genetics and, depending of the project, cutting edge imaging microscopy.
1) Characterization of the NMD pathway in fission yeast S. pombe
2) Investigation of the link between pre-mRNA processing, mRNP biogenesis and NMD in Drosophila
3) Tagging and tracking of ribosomal subunits in the nucleus.


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Please find additional funding text below. For further funding details, please see the ‘Funding’ section.

The School of Biosciences offers a number of UK Research Council (e.g. BBSRC, NERC) PhD studentships each year. Fully funded research council studentships are normally only available to UK nationals (or EU nationals resident in the UK) but part-funded studentships may be available to EU applicants resident outside of the UK. The deadline for applications for research council studentships is in January each year.

Each year we also have a number of fully funded Darwin Trust Scholarships. These are provided by the Darwin Trust of Edinburgh and are for non-UK students wishing to undertake a PhD in the general area of Molecular Microbiology. The deadline for this scheme is also in January each year.

Please note the only funding available for our PhD is via the Scholarships mentioned. All applicants should indicate in their applications how they intend to fund their studies. Any academically suitable applicant that does not indicate how they intend to fund their studies will be considered for the Darwin and/or the Elite Scholarships if not already indicated. We can only consider applicants who have their own funding or wish to apply for their own funding or are successful in gaining a Scholarship.

Funding Notes

Research Council Studentships are available for UK applicants. EU applicants resident in the UK may also be eligible. Non-UK students interested in molecular microbiology may apply for a Darwin Trust Scholarship. The deadline for applications for Research Council and Darwin Trust studentships is 31st January 2014.

We have a thriving community of International PhD students and encourage applications at any time from students of any nationality either able to fund their own studies or who wish to apply for their own funding (e.g. Commonwealth Scholarship Council, Islamic Development Bank).

For further information on funding see http://www.birmingham.ac.uk/schools/biosciences/courses/postgraduate/phd.aspx

References

Brogna S, Wen J. Nonsense-mediated mRNA decay (NMD) mechanisms. Nat Struct Mol Biol. 2009 16(2):107-13.

Wen J, Brogna S. Splicing-dependent NMD does not require the EJC in Schizosaccharomyces pombe. EMBO J. 2010 29(9):1537-51.

De S, Brogna S. Are ribosomal proteins present at transcription sites on or off ribosomal subunits? Biochem Soc Trans. 2010 38(6):1543-7.

De, S., Varsally, W., Falciani, F., and Brogna, S. (2011). Ribosomal proteins' association with transcription sites peaks at tRNA genes in Schizosaccharomyces pombe. RNA 17, 1713-1726.



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Project supervisors

Career overview

Dr Saverio Brogna was born in Piscopio, Italy, where he completed his undergraduate studies in Biological Sciences at the University of Pavia (Collegio Ghislieri). After graduating, he worked for nearly three years in Iraklion, Crete, Greece, with Professor Babis Savakis. Dr Brogna then pursued his PhD and postdoctoral research in the Department of Genetics at Cambridge University under the supervision of Professor Michael Ashburner. In 2000, he was awarded a Wellcome Trust International Prize Travelling Fellowship to conduct research at Brandeis University in the USA with Professor Michael Rosbash. Dr Brogna joined the School of Biosciences at the University of Birmingham in 2000, initially on an independent Wellcome Trust fellowship, and subsequently received a Royal Society Research Fellowship from 2004 to 2013, which enabled him to establish his independent research group. His research focuses on RNA biology, particularly the mechanisms linking pre-mRNA processing with translation and Nonsense Mediated mRNA Decay (NMD), as well as the functions of ribosomes and ribosomal proteins within the nucleus.


Research interests

Dr Brogna''s research focuses on RNA biology, specifically the mechanisms connecting pre-mRNA processing with translation and Nonsense Mediated mRNA Decay (NMD). The laboratory investigates several aspects of RNA processing, primarily using the yeast *Schizosaccharomyces pombe* and the fruit fly *Drosophila melanogaster* due to their genetic advantages. A key area of interest is the mechanism of NMD, which plays a crucial role in the quality control of gene expression by degrading abnormal mRNAs with premature termination codons (PTCs). Dr Brogna''s work has revealed that PTCs significantly affect spliced mRNAs compared to transcripts from intron-less genes and can influence nuclear polyadenylation. The research aims to elucidate the interconnections between pre-mRNA processing, translation, and mRNA stability. Additionally, Dr Brogna''s group develops techniques to visualise the recruitment of processing factors to nascent transcripts, exploring how the composition of ribonucleoprotein complexes affects mRNA maturation pathways. Another focus is on visualising translation, where the group has tagged ribosomal subunits with fluorescent proteins to study their interactions in *Drosophila* cells, discovering the presence of translating ribosomes in the nucleus and seeking to identify associated RNAs.

View Dr. Saverio Brogna's profile