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The study found that two BH3-mimetics and one FGFR inhibitor were able to block lung cancer cell survival so successfully in pre-clinical models that tumours not only stopped growing, they began to shrink away.
The research, led by Dr Clare Weeden, Ms Casey Ah-Cann and Dr Marie-Liesse Asselin-Labat from the Walter and Eliza Hall Institute, was published in Oncogene.
• A new study has revealed how to block the growth of lung cancer in pre-clinical models
• The tumours not only stopped growing, they began to shrink away
• The ability to shrink tumours means patients could live longer, healthier lives, with fewer symptoms from their cancer
Cancer is a disease arising from abnormal cells that have distinguishing traits known to scientists as ‘hallmarks’. Hallmarks can also be understood as different ‘pathways’ that lead to tumours being able to form and thrive.
Dr Weeden said it was an exciting moment when the team realised they had targeted and disrupted two hallmarks of lung cancer survival known as the ‘cell death’ and ‘cell growth’ pathways.
“It was amazing to discover how vital the ‘cell death’ and ‘cell growth’ pathways were for lung cancer cell survival, and on top of that, how these pathways could be blocked to stop the spread of cancer.
“Using three potent compounds – two BH3-mimetics and one FGFR inhibitor – we were able to block key parts of the pathways called FGFR, BCL-XL and MCL-1 so successfully that the tumours not only stopped growing, they began shrinking,” Dr Weeden said.
Ms Ah-Cann said the ability to shrink tumours meant patients could live longer, healthier lives, with fewer symptoms from their cancer.
“Our findings bring researchers closer to being able to develop targeted drugs that give lung cancer patients back their quality of life and hopefully even eliminate their cancer for good.
“The next step in our research is working to develop new drugs that can block these molecules safely and effectively in patients,” she said.
Dr Weeden said studies like these demonstrated how important it was to understand how lung cancer formed. “The more we can disrupt the pathways that cause lung cancer, the closer we will be to developing better, targeted treatments for the leading cause of cancer death in Australia.”
This research was supported by The Lung Foundation Australia, Viertel Foundation, Servier, the Victorian Cancer Agency, Cancer Therapeutics CRC, the Harry Secomb Foundation, the Ian Potter Foundation, the Leukaemia and Lymphoma Society, the Australian Cancer Research Foundation, the Victorian State Government Operational Infrastructure Support and Australian Government NHMRC IRIISS.
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