Toray Develops Porous Fiber to Adsorb Pathogenic Substances in Intractable Diseases

Toray Industries has developed a technology to control the pore size of polymethyl methacrylate (PMMA) porous fibers in a range from several nm to approximately 1,000 nm. This advancement allows for the selective adsorption and removal of large-molecule pathogenic substances—such as autoantibodies, lipoproteins, and exosomes—which were previously difficult to eliminate. The technology aims to provide a new blood purification treatment option for intractable diseases like autoimmune disorders, cardiovascular diseases, neurodegenerative conditions, and cancer, where traditional drug or surgical therapies are insufficient.