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Protein-based Therapy for Cancer

by Julia Samuel on December 18, 2014 at 6:11 PM
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 Protein-based Therapy for Cancer

Scientists have produced a novel class of molecules that could be effective in treating cancer without dangerous side effects. Promising treatments known as biologics are on the market and under development for many serious illnesses such as cancer, but some of them come with high risks, even lethal ones. Their work on these compounds, which was tested on prostate cancer cells was reported in ACS' Journal of the American Chemical Society

David A. Spiegel and colleagues explain that biologics are protein-based therapies that have revolutionized cancer treatment over the past decade. These compounds work by latching onto malignant cells and then triggering the immune system to destroy them. The approach is known as immunotherapy. More than 400 kinds are currently being tested. Although they are very effective at clearing out cancer cells, biologics have serious drawbacks, including potentially fatal allergic reactions that are mainly due to their relatively large size. Spiegel's team wanted to develop an alternative that would be just as effective but without the risks.

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The researchers produced a set of molecules that they call synthetic antibody mimics, or SyAMs. These molecules act like biologics by sparking an immune response but are far smaller. In lab tests, a subgroup called SyAM-Ps worked well against prostate cancer cells. Because of their small size, the researchers suggest that SyAMs could avoid many of the pitfalls that have plagued biologics. The compounds could represent an entirely new direction in immunotherapy for treating cancer and other diseases, the researchers conclude.



Source: Medindia
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