Washington: Scientists from the Manchester Collaborative Centre for Inflammation Research (MCCIR) have made a breakthrough that could be used to aid the design of future cancer treatments.They have discovered why a particular cancer drug is so effective at killing cells. Professor Daniel Davis and his team used high quality video imaging to investigate why the drug rituximab is so effective at killing cancerous B cells.It is widely used in the treatment of B cell malignancies, such as lymphoma and leukaemia - as well as in autoimmune diseases like rheumatoid arthritis.Using high-powered laser-based microscopes, researchers made videos of the process by which rituximab binds to a diseased cell and then attracts white blood cells known as natural killer (NK) cells to attack. They discovered that rituximab tended to stick to one side of the cancer cell, forming a cap and drawing a number of proteins over to that side. It effectively created a front and back to the cell - with a cluster of protein molecules massed on one side.
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