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New antibody could be promising cancer treatment

New antibody could be promising cancer treatment
2024-11-11
(Press-News.org) Researchers at Uppsala University and KTH Royal Institute of Technology have developed a new form of precision medicine, an antibody, with the potential to treat several types of cancer. Researchers have managed to combine three different functions in the antibody, which together strongly amplify the effect of T cells on the cancer tumour. The study has been published in Nature Communications.

Researchers have developed a unique type of antibody that both targets and delivers a drug package via the antibody itself, while simultaneously activating the immune system (“3-in-1 design”) for personalised immunotherapy treatments.

“We have been researching precision medicine for close to 15 years now, as well as how we can use antibodies to influence an important key protein (CD40) in the immune system. We can now show that our new antibody method works as precision medicine for cancer,” explains Sara Mangsbo, professor at the Department of Pharmacy at Uppsala University, who together with Johan Rockberg, professor at KTH Royal Institute of Technology, is the study’s lead author.

The drug redirects the immune system to find and target specific mutations and gene changes that are only found in cancer cells, known as neoantigens. This is achieved by the new antibody both delivering the unique tumour-specific material directly to a particular type of immune cell and by stimulating this cell simultaneously, which then has the capacity to greatly enhance the T-cell response to the tumour.

The results show that the method works in several ways. Not only does it activate the right type of immune cells in human blood samples, but animal models show that mice receiving the treatment had prolonged survival and, at higher doses, also save the mice from cancer, and that the method is safer than previous cancer treatments the researchers have studied.

Customised precision medicines can be both costly and time-consuming to develop.

“The advantage of our drug is that it is easy to produce on a larger scale , yet can be easily tailored to the patient’s disease or specific tumour. The medicine consists of two parts that are combined, a targeting bispecific antibody – which can be produced in large quantities in advance – and a custom peptide part, which is produced rapidly synthetically on a small scale for a desired type of cancer. Both in terms of production cost and the short time it takes to tailor a peptide to a new tumour, this increases availability and should make it quicker for patients to go from diagnosis to treatment,” explains Johan Rockberg, Professor at KTH Royal Institute of Technology.

The aim of the study was to establish a more flexible, faster and safer treatment for cancer than those currently available. The study  has already shown that the method has the potential to be customised for each patient, thereby strengthening the immune system against cancer. The next step is to use the fully optimised production process to manufacture the drug candidate for further safety studies and then start clinical trials in humans.

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[Press-News.org] New antibody could be promising cancer treatment