Site-specific modifications to AAV8 capsid yields enhanced brain transduction in the neonatal MPS IIIB mouse.

Mucopolysaccharidosis type IIIB (MPS IIIB) is an autosomal recessive lysosomal disease caused by defective production of the enzyme α-N-acetylglucosaminidase. It is characterized by severe and complex central nervous system degeneration. Effective therapies will likely target early onset disease and overcome the blood-brain barrier.

Mucopolysaccharidosis III (Sanfilippo Syndrome)- disease presentation and experimental therapies.

Sanfilippo Syndrome or Mucopolysaccharidosis Ill (MPS Ill) is a group of lysosomal storage diseases resulting from a deficiency of one of four lysosomal enzymes: Type A - heparan N-sulfatase (SGSH), Type B - a-N-acetylglucosaminidase (NAGLU), Type C - acetyl CoA a-glucosaminide acetyltransferase (HGSNAT) and Type D - N-acetylglucosamine-6-sulfatase (GNS). Each of these enzymes is necessary for degradation of heparan sulfate. Deficiency of any of these enzymes manifests as a neurodegenerative disorder with accompanying somatic manifestations.