Abstract: Provided are methods, expression systems, kits, and vectors for constitutive and/or cumate-inducible expression of a gene of interest in CHO cells. The expression systems and methods described herein employ CHO cells that are stably transfected with a nucleic acid molecule encoding a reverse cumate transactivator (rcTA), the expression of which is regulated by a cymene repressor (CymR). for constitutive and/or cumate-inducible expression of a gene of interest.

Abstract: The present invention is related to a compound that includes a lysosomal enzyme and a targeting moiety, for example, a compound that includes iduronate-2-sulfatase conjugated to Angiopep-2 through a linker formed by specific click chemistry reactions. In certain embodiments, these compounds, owing to the presence of the targeting moiety, can cross the blood-brain barrier or accumulate in the lysosome more effectively than the enzyme alone. The invention also features pharmaceutical compositions containing such compounds and methods for treating lysosomal storage disorders (e.g., mucopolysaccharidosis Type II) using such compounds.

Abstract: The present invention is related to a compound that includes a lysosomal enzyme and a targeting moiety, for example, where compound is a fusion protein including iduronate-2-sulfatase and Angiopep-2. In certain embodiments, these compounds, owning to the presence of the targeting moiety can crossing the blood-brain barrier or accumulate in the lysosome more effectively than the enzyme alone. The invention also features methods for treating lysosomal storage disorders (e.g., mucopolysaccharidosis Type II) using such compounds.

Abstract: The present invention is related to a compound that includes a lysosomal enzyme and a targeting moiety, for example, where compound is a fusion protein including iduronate-2-sulfatase and Angiopep-2. In certain embodiments, these compounds, owning to the presence of the targeting moiety can crossing the blood-brain barrier or accumulate in the lysosome more effectively than the enzyme alone. The invention also features methods for treating lysosomal storage disorders (e.g., mucopolysaccharidosis Type II) using such compounds.