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Medical Health Aged Care, Research Development

Potential new treatment for prostate cancer receives $5M funding boost

Monash University 4 mins read

A newly funded Monash University-led research program will investigate the potential of Chimeric Antigen Receptor T (CAR T) cell therapy, previously only effective in blood cancers, for the treatment of prostate cancer.

Prostate cancer* is the most commonly diagnosed cancer in Australia and remains a leading cause of death worldwide. At present, there is no cure for advanced prostate cancer.**

A multi-disciplinary and multi-institutional team of researchers has been awarded a $5 million Synergy Grant from the National Health and Medical Research Council (NHMRC) to develop highly-tailored treatments for prostate cancer, using next-generation CAR T cell therapy. 

NHMRC Synergy Grants support outstanding multidisciplinary teams of investigators to answer major questions that cannot be answered by a single investigator.

CAR T cell therapy uses the body’s own immune system T cells and has transformed treatment for some blood cancers. However, CAR T cell therapy could also be effective in solid cancers including prostate cancer, based on recent evidence published by members of the new Synergy team.

The Synergy Grant program will be led by Professor Gail Risbridger from Monash University’s Biomedicine Discovery Institute (BDI), Professor Phillip Darcy from Peter MacCallum Cancer Centre and Professor Paul Timpson from The Garvan Institute of Medical Research.

Professor Risbridger explained that the best evidence for the usefulness of CAR T cell therapy so far has been in blood cancers. She said that the importance of the team’s approach was the discovery that this therapy could be effective in attacking solid cancers when modulated with chemotherapy.

“This program has been long in the making, with a number of different strands of research only coming together now. For example, my colleague and co-chief investigator Professor Renea Taylor and I are not immunologists, we are cancer biologists with lifetime experience in researching prostate cancer, and working with cancer patients and consumer advocates,” Professor Risbridger said.

“So we are bringing together people with all the expertise we need, to get them closely aligned on this particular problem. We will be working with bioengineers including Monash University’s Associate Professor Daniela Loessner, cancer biologists, immunologists and clinicians including Professor Ian Davis to bring fresh perspectives to the issues, develop a unified approach, and speed up the development of CAR T treatment.”

Monash BDI’s Professor Renea Taylor, one of the chief investigators on the team, said, “We know that CAR T cells currently don't work as well as they might on solid tumours because we've done our own clinical studies that highlighted a number of issues. These include how the tumour creates a microenvironment toxic to the attacking T cells, and how the CAR T cells themselves don't move or stay in the right place as well as they could.”

The project is split into two parts. In the first part, the team will use a range of animal models and human cell samples in the laboratory to describe the changes in cells that happen in the tumour microenvironment (TME) that make it easier for T cells to enter tumours. 

Professor Timpson said, “We will also improve our static snapshot data by using live imaging deep inside the tumour to see the effects of drugs in real time. This means we can follow the entry of T cells into living tissues, showing how cells move, where they move to, where they stay in place, and how long they actually take to move around. It’s the same idea as Google map location history  – you know where you’ve been, how often and for how long.

“This mapping of cell activity in the TME will give us the information we need to customise both the T cell type, and the chemotherapy drug regimen which modulates the T cells, so we will develop an array which will allow tailored treatments.”

In the second part of the project, the team will use cutting-edge engineering and manufacturing methods to improve the production of CAR T cells, which will help T cells move to where they need to be in the body, stay alive, and work effectively to kill prostate cancer cells.

Professor Darcy said, “We want our cells to drive to their intended destinations in the least amount of time and with the fewest accidents.”

The team’s new technologies and extensive biology knowledge will help them understand the basic physiological mechanisms enabling the therapies to kill cancers. They will test their new CAR T cell production technologies on tissues donated by patients, genetically compatible mouse models, and 3D platforms.

Professor Ian Davis, who is based at Monash University’s Eastern Health Clinical School and is the clinical lead for the program, said, “Overall, our team will fill in a lot of the gaps in our knowledge and skills that are needed to get CAR T cells into clinical use. By the end of our program, we will have made next-generation CAR T cells that can be quickly given to patients, knowing the right pre-treatment steps and how best to match the patients to the therapy to ensure success.

“Potentially, this project will enable us to develop highly tailored treatments for a variety of solid cancers, not just prostate. Our hope is that we may finally have a weapon in the solid cancer therapy armoury that can by-pass the barriers and get to the cancers.”

Synergy grant collaborators. L-R, top row: CIA Professor Gail Risbridger (Monash University), CIB Professor Phillip Darcy (Peter MacCallum Cancer Centre), CIC Professor Paul Timpson (The Garvan Institute of Medical Research); L-R bottom row: CID Professor Renea Taylor (Monash University), CIE Associate Professor Daniela Loessner (Monash University), CIF Professor Ian Davis (Monash University)

*Australian Government Cancer Australia, Figure 1, Estimated cancer incidence in Australia 2022
**Our World in Data, based at Oxford University, Causes of death globally in 2019

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About the Monash Biomedicine Discovery Institute

Committed to making the discoveries that will relieve the future burden of disease, the Monash Biomedicine Discovery Institute (BDI) at Monash University brings together more than 120 internationally-renowned research teams. Spanning seven discovery programs across Cancer, Cardiovascular Disease, Development and Stem Cells, Infection, Immunity, Metabolism, Diabetes and Obesity, and Neuroscience, Monash BDI is one of the largest biomedical research institutes in Australia. Our researchers are supported by world-class technology and infrastructure, and partner with industry, clinicians and researchers internationally to enhance lives through discovery.



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