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  Bioinformatics, Method Development and Exploratory Research Concerning Human Genome Variation


   Department of Genetics and Genome Biology

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  Prof A J Brookes  Applications accepted all year round  Self-Funded PhD Students Only

About the Project

The human genome varies between normal individuals at around 1/200 bases. Some of these differences influence our risk of disease (like cancer, heart disease, mental illness) and others alter drug reactions. Most people also carry rare ‘mutations’ that cause disease. Modern genomics research is rapidly identifying these polymorphisms and mutations. However, available databases, informatics tools, laboratory methods, and research strategies are not yet able to support comprehensive experiments that we would like to do routinely. The Brookes research laboratory is therefore endeavoring to improve on this, via a series of inter-related projects:

1)Having devised a simple and robust DNA analysis procedure called DASH (Dynamic Allele-Specific Hybridization), we are taking this forward towards a miniaturized high-throughput system and/or a hand-held device capable of scoring large numbers of medically relevant nucleotide differences in parallel, using samples such as blood spots, hair roots, or buccal smears. This project operates at the interface between genetics, chemistry, and micro-engineering.

2)Our bioinformatics activities in support of genome variation research concerns tools for automated assay design, automated interpretation of analysis device outputs, genotype data handling, and result analysis. One major component of this is the establishment of a comprehensive public-domain database summarizing what is known about disease phenotypes and their underlying genotype associations.

3)Using tools developed by us and others, we are exploring basic questions about the structure of human DNA variation. One particular interest is the recent discovery we made that large stretches of DNA are non-unique and vary in presence/absence between individuals. These and other types of sequence variation are being investigated for their distribution in various global samples, to help understand the forces of evolution and human population history.

4)Using tools developed by us and others, we are exploring how genome variation impacts disease. Alzheimers Disease, Rheumatoid Arthritis, and Cardiovascular Disease are major areas of interest. We are working towards a situation in which a sufficiently large fraction of the genetic risk of disease is understood, so that predictive and personalized medicine becomes a reality.


We are an equal opportunities employer and particularly welcome applications for Ph.D. places from women, minority ethnic and other under-represented groups.

References

Complex SNP-Related Sequence Variation In Segmental Genome Duplications. D.Fredman, S.J.White, S.Potter, E.E.Eichler, J.T.DenDunnen and A.J.Brookes. Nature Genetics (2004) 36, 861-866.

Quantitative Trait Loci Near the Insulin-Degrading Enzyme (IDE) Gene Contribute to Variation in Plasma Insulin Levels. H.F.Gu, S.Efendic, S.Nordman, C-G.Östenson, K.Brismar, A.J.Brookes and J.A.Prince. Diabetes (2004) 53, 2137-2142.

Linkage Disequilibrium Patterns Vary Substantially Among Populations. S.L.Sawyer, N.Mukherjee, A.J.Pakstis, L.Feuk, J.R.Kidd, K.K.Kidd and A.J.Brookes Eur J Hum Genet (2004) (in press)

DFold: PCR Design that Minimizes Secondary Structure and Optimizes Downstream Genotyping Applications. D.Fredman, M.Jobs, L.Stromqvist and A.J.Brookes. Human Mutation (2004) 24, 1-8.

HGVbase: A Curated Resource Describing Human DNA Variation and Phenotype Relationships. D.Fredman, G.Munns, D.Rios, F.Sjöholm, M.Siegfried, B.Lenhard, H.Lehväslaiho and A.J.Brookes. Nucleic Acids Res. (2004) 32, D516-D519.

Genetic Variation in a Haplotype Block Spanning IDE Influences Alzheimer Disease. J.A.Prince, L.Feuk, H.F.Gu, B.Johansson, M.Gatz, K.Blennow and A.J.Brookes. Human Mutation (2003) 22, 363-371.

Scoring Insertion-Deletion Polymorphisms by Dynamic Allele Specific Hybridization. S.L.Sawyer, W.M.Howell and A.J.Brookes. Biotechniques (2003) 35, 292-298.

DASH-2: Flexible, Low-Cost and High-Throughput SNP Genotyping by Dynamic Allele-Specific Hybridization on Membrane Arrays. M.Jobs, W.M.Howell, L.Strömqvist, T.Mayr and A.J.Brookes. Genome Res. (2003) 13, 916-924.

SNP Association Studies in Alzheimer's Disease Highlight Problems for Complex Disease Analysis. T.Emahazion, L.Feuk, M.Jobs, S.Sawyer, D.Fredman, D.StClair, J.A.Prince and A.J.Brookes. Trends Genetic (2001) 17, 407-413.

Rethinking Genetic Strategies to Study Common Diseases. A.J.Brookes. Trends Mol. Med. (2001) 7, 512-516.

Dynamic Allele-Specific Hybridisation: A New Method for Scoring Single Nucleotide Polymorphisms. W.M.Howell, M.Jobs, U.Gyllensten and A.J.Brookes. Nature Biotech (1999) 17, 87-88.
The Essence of SNPs. A.J.Brookes. Gene (1999) 234, 177-186.

 About the Project