Abstract: The invention described herein provides gene therapy vectors, such as adeno-associated virus (AAV) vectors, that co-express a functional protein (such as a miniaturized human micro-dystrophin gene product) and one or more additional coding sequences for an RNAi sequence (siRNA, shRNA, miRNA), an antisense sequence, a guide sequence for a gene editing enzyme (such as an sgRNA for CRISPR/Cas9, or a crRNA for CRISPR/Casl2a), and/or a micro RNA, and methods of using the vectors to treat subjects suffering from a muscular dystrophy such as DMD/BMD.

Abstract: Disclosed herein are methods of generating proteoglycans with distinct glycan structures in engineered, non-naturally occurring eukaryotic cells. These methods make accessible a dynamic range of protein glycosylation. Compositions of engineered, non-naturally occurring cells capable of generating these proteoglycans are also disclosed herein.