Biotech Strategy Blog

Commentary on Science, Innovation & New Products with a focus on Oncology, Hematology & Cancer Immunotherapy

Posts tagged ‘glutamine and T cells’

The past year has seen hype and hope over targeting KRAS mutant cancers and many challenges still remain to be addressed. We’ve seen the emergence of selective G12C inhibitors, as well as others targeting SOS1:RAS upstream and even related pathways to address cross-talk such as SHP2 and ULK1, for example. The oncology R&D ecosystem is beginning to motor again as new competitors start entering the niche.

Riding the KRAS wave

To put things into broader perspective, however, despite all the positive news in lung cancer, consider the colorectal carcinoma data was less impressive than lung because of more complex, heterogeneous disease.

Meanwhile, Lilly recently announced the discontinuation of their selective G12C inhibitor, LY3499446, due to adverse toxicity, so clearly it is not all going to be plain sailing in this landscape!

Let’s also not forget the G12C mutation is not the only viable target in this context. People with advanced lung cancer can also present with one or more of several co-occurring mutations such as the serine/threonine kinase 11 gene (STK11) and kelch like ECH associated protein 1 gene (KEAP1), for example.

Unfortunately those presenting with both STK11 and KEAP1 mutations – independent of KRAS status – often have a poorer prognosis and there remains an unmet medical need for effective new treatments.

In this fourth postcard in our summer mini-series on the potential of immunometabolism for cancer immunotherapy, we’re taking a look at a novel way to target KRAS mutant lung cancer and, in particular, those with an STK11 and KEAP1 mutation who tend to do poorly on current therapies.

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What do T cells want?

In the third post in our summer mini-series on immunometabolism, we’re continuing our journey by taking a look at glutamine as a target, and in particular, the potential of glutaminase inhibitors.

Cancer cells compete with immune cells for glucose and glutamine in the tumor microenvironment, and if the cancer cell wins then immuno-surveillance and anti-tumour immune response can be diminished. Of interest, glutamine addiction is commonly seen in cultured cancer cells.

This begs a critical question – can we target glutamine therapeutically in patients, and if so, what happens?

In this article we highlight an expert interview with Dr Jeffrey Rathmell, who is Professor of Pathology, Microbiology and Immunology at Vanderbilt, where he directs the Vanderbilt Center for Immunobiology.

Dr Rathmell is at the forefront of research into T cell fuels such as glutamine and has published preclinical work on early compounds in this niche, including Calithera’s glutaminase inhibitor, CB-839, for example.

He kindly spoke to BSB after the AACR20 virtual annual meeting where he chaired a session on Metabolism and the Tumor Microenvironment.

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This is the second postcard in our mini-series on the emerging field of immunometabolism and the translational potential for cancer new product development.

Over the course of three weeks, we’ll be sharing six postcards from our journey, three of which are based around interviews with scientists at the forefront of research in this niche.

What did we learn about immunometabolism at AACR20?

In this latest post we’re taking a look at some of the signals at this year’s virtual AACR annual meeting, which as usual had a wealth of data on offer, offering as it does a window into the future of cancer drug development.

To learn more from our oncology analysis and get a heads up on insights and commentary on the emerging area of immunometabolism, subscribers can log-in or you can click to gain access to BSB Premium Content.

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