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Home   Researchers   Our researchers
Dr Jodi Saunus

Dr Jodi Saunus

j.saunus@uq.edu.au
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    Dr Jodi Saunus

    Dr Jodi Saunus

    Dr Jodi Saunus is a Senior Research Fellow and Mater Career Track Fellow who specialises in translational research on metastatic breast cancer. Based at Brisbane’s Translational Research Institute, she was recruited by Mater Research in 2022 to help facilitate patient-focused research at the interface of biomedical R&D and clinical practice. Dr Saunus has an honours degree in biochemistry and biomedical science, a PhD in breast cancer molecular genetics, and post-doctoral experience in immunology, molecular cell biology, pathology informatics, and early-phase investigator-initiated clinical trials. Her research portfolio is centred on finding new ways to improve the clinical management of breast cancer, particularly triple-negative breast cancer, and the prevention and treatment of brain metastases.

    This work spans multiple disciplines and capabilities, and broadly involves: 

    • Molecular profiling of patient-donated blood and tumour tissue samples to identify features that could be exploited as specific therapeutic targets, or as biomarkers of treatment response.
    • Using experimental models of metastatic breast cancer to study the molecular mechanisms used by cancer cells to survive and grow in the brain.
    • Developing innovative treatment strategies that work differently to conventional cancer drugs, including engineered biologics, endoradiotherapy and vaccination.

    Dr Saunus is a strong proponent of biobanking, and of clinician and consumer engagement in translational research. With an outstanding network of collaborators from academia and clinical practice, she has secured over $6 million to fund this work and co-authored about 70 original research and review articles that have been featured in impactful biomedical research journals, including Cancer Research, Nature, Science Translational Medicine, Nature Communications and The Journal of Pathology. 

    Research Interests

    Biomarkers of tumour development and the response to chemotherapy in triple-negative breast cancer (TNBC)

    • The bottom line. TNBC is an unpredictable type of breast cancer that is defined by negative diagnostic tests for hormone receptor levels and HER2 gene amplification. These tumours do not respond to classical breast cancer drugs that target hormone dependence (e.g., tamoxifen) or the HER2 protein (e.g., trastuzumab), leaving chemotherapy as the only option for systemic treatment in most cases. Another dilemma for this group is that it is still not possible to predict which patients will be amongst the 60 per cent of ‘responders’, and which patients are unlikely to have a lasting response. So, despite enduring the toxicity and fatigue of chemotherapy, some patients relapse within a few years anyway, with disease spreading to critical organs like the liver, lungs, and/or brain. This advanced stage of disease (stage IV) is very difficult to control, and usually leads to death within months or years.
    • The details. Using tumour tissue donated by Brisbane breast cancer patients, along with published breast tumour genetic data, my work involves correlating simple or complex tumour traits with biological features and treatment outcomes. Previously, I explored the potential clinical significance of single proteins, groups of proteins, and hub genes identified through mathematical modelling of transcriptional networks in TNBC. My work with Mater Research involves trying to elucidate how epigenetic mechanisms confer plasticity and resilience to the TNBC genome, how this knowledge could be exploited to improve the prescription of chemotherapy, and whether certain epigenetic features can be therapeutically targeted to improve chemotherapy response.

    Developing innovative therapeutics to prevent or treat brain metastases 

    • The bottom line. Breast cancer that spreads to the brain is a serious complication that produces neurological side-effects and a significant decline in quality-of-life. Brain metastases are becoming increasingly common in advanced breast cancer because after spreading and establishing new ‘colonies’ within normal brain tissue, breast cancer tends to be quite resistant to existing treatments. In the early stages of cancer spread, the brain provides a sanctuary for microscopic clusters of tumour cells, protecting them from circulating drugs. In larger, symptomatic brain metastases, research indicates that blood flow is particularly sluggish, slowing down the delivery of systemic drug therapies. We need new, innovative ways to treat brain metastases, preferably when they are still small.
    • The details. In collaboration with experts in immuno-oncology, radiotherapy, and engineered biologic therapies, I am exploring ways to reactivate tumour immunity in metastatic patients with brain involvement. This can involve administering a semi-tailored, exogenous vaccine; or engineered nano-carriers that deliver an immunogenic payload directly to the tumour. This is an ambitious approach that aims to achieve sustained intracranial treatment efficacy, with minimal or no side-effects.

    Available PhD projects

    Development of new theranostic agents for metastatic breast cancer surveillance and treatment

    Most of the time, treatments for early breast cancer successfully prevent metastatic spread, but 10% of Australian patients still develop lethal recurrences within 5 years. Rather than waiting to see which patients develop symptoms of a possible relapse (e.g., headaches, respiratory symptoms), we are getting better at detecting metastasis early. Patients deemed to be at ‘high risk’ are offered regular PET or MRI scans, allowing earlier intervention and better quality-of-life. PET imaging of radioactive tracers is more specific than MRI, but the standard tracer used in oncology – [18F]fluorodeoxyglucose (FDG) – is not useful for imaging the brain. We are seeking a student to help us develop agents that seek out tumour cells more specifically than FDG and can also be engineered to function as therapeutics. The project is flexible depending on the successful candidate’s expertise and interest (e.g., in-vivo models of metastatic breast cancer, protein chemistry and/or molecular biology).

    Current research

    • Group Member - Cancer Biology Research
    • Program Member - Cancer

    Mater patients will play a key role in helping discover why some women with breast cancer develop deadly metastases as a new Mater Research study gets underway in Brisbane.

    31

    Oct

    Mater patients to help unlock mystery of deadliest breast cancers

    Dr Jodi Saunus has been awarded this year’s Mater Research Strategic Grant for Outstanding Women to progress her impressive translational research to identify novel molecular biomarkers in breast...

    17

    Jun

    Award helps advance research into common women’s cancer

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