PANCREATIC AND LUNG CANCERS DRIVEN BY MUTATIONS IN THE CANCER GENE KRAS
Dr Mara Zeissig, Group Head, T Cell Immunotherapy Laboratory
Tumour Inflammation and Immunotherapy Program
SAiGENCI – South Australian immunoGENomics Cancer Institute, Australia
RESEARCHER PROFILE
Filmed in Adelaide, Australia | December 2025
Dr Mara Zeissig is a recently appointed Lab Head within the Tumour Inflammation and Immunotherapy Program at the South Australian immunoGENomics Cancer Institute (SAiGENCI).
Her research focuses on studying immune evasion mechanisms in lung and pancreatic cancers to identify novel ways to increase response to immunotherapy. Her expertise is in genetically engineered mouse models of lung cancer, CRISPR-Cas9 screening technologies and T cell based immunotherapies (e.g Checkpoint inhibitors).
Dr Zeissig obtained her PhD at the University of Adelaide in 2020 with Prof Andrew Zannettino, where her research focused on the role of chemokine receptor CCR1 in the dissemination of the hematological malignancy multiple myeloma. She then undertook postdoctoral studies at Monash University with Prof Tony Tiganis, focusing on the role of protein tyrosine phosphotases PTPN2 and PTP1B on anti-tumour immunity in melanoma, breast, colon and liver cancers. In 2022 she joined the lab of Prof Kate Sutherland at WEHI. Here she conducted sophisticated CRISPR-Cas9 in vitro and in vivo screening to identify genetic determinants that influence response to KRAS inhibitors, and to identify novel immunotherapy targets in KRAS-mutant lung cancer. Her research has been published in high-impact journals including Science Advances (2022) and Cancer Discovery (2022). Dr Zeissig has been the recipient of numerous career awards and grants, including a Victorian Cancer Agency ECR Fellowship (2023-2026) and a Cure Cancer Research Grant (2023).
Immunotherapies such as CAR T cell therapy or Immune checkpoint inhibitors all harness the ability of cytotoxic T cells to recognise and kill tumour cells. However, approx. 80% of solid cancer patients do not respond to immunotherapy. This is due to both tumour intrinsic and extrinsic evasion mechanisms, the most crucial of these being 1) the immunosuppressive microenvironment that leads to T cell exhaustion and 2) loss of antigen and/or checkpoint ligand expression on tumour cells rendering the tumour unrecognisable by T cells. Importantly, there may be additional, undiscovered immune evasion mechanisms that could be exploited for immunotherapy.
Dr Zeissig’s lab is focused on understanding how cancers evade the immune system to identify new ways to enhance response to immunotherapy. In particular, her team work on lung and pancreatic cancers driven by mutations in the cancer gene KRAS. They utilise a range of tools including genetically engineered preclinical models of cancer, analysis of immune cell subsets, single-cell profiling and molecular biology techniques. They also harness large-scale genetic screening using CRISPR-Cas9 technology to find previously unknown targets and mechanisms that regulate response to immunotherapy.
Source: Supplied
https://orcid.org/0000-0003-3264-6546
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At the frontier of human cellular neuroscience research
Associate Professor Cedric Bardy is the Director of The Laboratory for Human Neurophysiology, Genetics & Stem Cells, located at SAHMRI. South Australia.
His current research uses preclinical, patient-derived cell models to test innovative therapeutic strategies, with a current focus on Parkinson’s disease, brain cancer and childhood dementia (Sanfilippo syndrome).
His work has established a platform to facilitate the discovery and validation of treatments for brain disorders. Their research is at the frontier of human cellular neuroscience research and translational applications that benefit global public health.
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Lymphoma, Myeloma and Genomics
Professor Dipti Talaulikar is a clinical and laboratory haematologist with expertise in genomics, working at Canberra Health Services, and Professor at ANU. She has a clinical and research interest in lymphoma, myeloma and genomics, and has authored close to 100 peer reviewed papers, including several clinical guidelines that have had a significant impact on clinical practice.
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Genetic disease research imitating function and architecture of organs
Professor Wolvetang was among the first to bring the first human embryonic stem cells to Queensland, with his Wolvetang Group at the AIBN now renowned for its work with organoids: growing them, studying them, and using them to try and understand diseases and human development.
Using cutting edge technology, Professor Wolvetang designs and grows organoids both for their own work and for labs across the country, coaxing pluripotent stem cells or tissue samples into 3D structures that mimic the function and architecture of real brains, livers, kidneys, spinal cords, and intestines.
