Dr Tanya Soboleva
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About
Dr Tatiana (Tanya) Soboleva received her undergraduate training in biochemistry at the Moscow State University. In 1998 she was awarded an International Postgraduate Research Scholarship by the Australian Government. She undertook her PhD study at the JCSMR, ANU, with Dr Rohan Baker and was awarded a PhD in Molecular Medicine for her work investigating nucleocytoplasmic transport of the de-ubiquitilating enzyme, Usp4. In 2003 she undertook post-doctoral studies with Professor Ian Young (JCSMR, ANU), investigating how the cytokines activate their receptor systems. In 2006 she joined Professor David Tremethick’s laboratory (JCSMR, ANU). The research in the laboratory is focused on investigation of how gene expression and chromatin structure is regulated by the epigenetic mechanisms. Specifically, we are interested in how histone variants influence chromatin states and transcription. Dr Soboleva has discovered a novel histone variant in mice, H2A.Lap1. We have found that H2A.Lap1 histone variant that is related to a human variant, H2A.Bbd, is involved in activation of gene expression, as well as pre-mRNA splicing processes. The detailed in-depth study of the function of H2A.Lap1 variant in vivo, showed that this histone protein alters chromatin structure to allow activation and processing of genes during specific stages of male germ cells and in the brain. In addition, we have recently found that H2A.Bbd is overexpressed in some cancers and may play a causative role during carcinogenesis. These results provide new avenues for a number of exciting research projects for PhD students and Honours students.
Areas of expertise
- Epigenetics (Including genome methylation and epigenomics)
- Developmental genetics (Including sex determination)
- Cancer epigenetics
- Neurogenetics
- Cell development, proliferation and death
Affiliations
Research interests
The research in the laboratory is focused on investigation of how gene expression and chromatin structure is regulated by the epigenetic mechanisms. Specifically, we are interested in how histone variants influence chromatin states and transcription. Dr Soboleva has recently discovered a novel histone variant in mice, H2A.Lap1. We have found that mice have a family of four H2A.Lap1-like variants, all related to a human variant, H2A.Bbd. The detailed in-depth study of the function of H2A.Lap1 variant in vivo, showed that this histone protein alters chromatin structure to allow activation of genes during specific stages of spermatogenesis. In addition, we found that in the testis, H2A.Lap1 interacts with the RNA splicing machinery – a very unexpected and novel observation, never previously reported for histone variants. These results provide new avenues for a number of exciting research projects for PhD students and Honours students.
Projects
- A novel mechanism of epigenetic information transfer between different cell types, Supervisor
- Characterisation of the role of H2A.B spermatogenesis during heat stress, Supervisor
- How is H2A.B involved in Hodgkin lymphoma carcinogenesis?, Supervisor
- Investigating a role of C/T antigens in spermatogenesis and cancer, Supervisor
- Investigation of a role of H2A.B3 in piRNA biology, Supervisor
Location
Room 3.068
Publications
- Soboleva TA, Nekrasov M, Ryan DP, Tremethick DJ. Histone variants at the transcription start-site. Trends Genet. 2014 May;30(5):199-209
- Nekrasov, M, Soboleva, T, Jack, C et al 2013, 'Histone variant selectivity at the transcription start site H2A.Z or H2A.Lap1', Nucleus, vol. 4, no. 6, pp. 431-437.
- Nekrasov, M, Amrichova, J, Parker, B et al., 'Histone H2A.Z inheritance during the cell cycle and its impact on promoter organization and dynamics', Nature Structural and Molecular Biology. 2012, vol. 19, no. 11, pp. 1076-1083.
- Soboleva TA, Nekrasov M, Pahwa A, Williams R, Huttley GA, Tremethick DJ. 'A unique H2A histone variant occupies the transcriptional start site of active genes', Nature Structural and Molecular Biology. 2012 Jan; 19(1): 25-30.
- Murphy, J, Soboleva, T, Mirza, S et al 2008, 'Clarification of the role of N-glycans on the common beta-subunit of the human IL-3, IL-5 and GM-CSF receptors and the murine IL-3 beta-receptor in ligand-binding and receptor activation', Cytokine, vol. 42, no. 2, pp. 234-42.
- Soboleva, T, Jans, D, Johnson-Saliba, M et al 2005, 'Nuclear-Cytoplasmic Shuttling of the Oncogenic Mouse UNP/USP4 Deubiquitylating Enzyme', Journal of Biological Chemistry, vol. 280, no. 1, pp. 745-752.
- Baker, R, Catanzariti, A, Karunasekara, Y et al 2005, 'Using Deubiquitylating Enzymes as Research Tools', in Raymond J. Deshaies (ed.), Ubiquitin and Protein Degradation, Elsevier, California, pp. 540-554.
- Catanzariti, A, Soboleva, T, Jans, D et al 2004, 'An efficient system for high-level expression and easy purification of authentic recombinant proteins', Protein Science, vol. 13, pp. 1331-1339.
- Soboleva, T & Baker, R 2004, 'Deubiquitinating Enzymes: Their Functions and Substrate Specificity', Current Protein and Peptide Science, vol. 5, pp. 191-200.