期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1992
卷号：89
期号：7
页码：2561-2565
DOI：10.1073/pnas.89.7.2561
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：Multiple sulfatase deficiency (MSD) is an inherited lysosomal storage disease characterized by the deficiency of at least seven sulfatases. The basic defect in MSD is thought to be in a post-translational modification common to all sulfatases. In accordance with this concept, RNAs of normal size and amount were detected in MSD fibroblasts for three sulfatases tested. cDNAs encoding arylsulfatase A, arylsulfatase B, or steroid sulfatase were introduced into MSD fibroblasts and fibroblasts with a single sulfatase deficiency by retroviral gene transfer. Infected fibroblasts overexpressed the respective sulfatase polypeptides. While in single-sulfatase-deficiency fibroblasts a concomitant increase of sulfatase activities was observed, MSD fibroblasts expressed sulfatase polypeptides with a severely diminished catalytic activity. From these results we conclude that the mutation in MSD severely decreases the capacity of a co- or post-translational process that renders sulfatases enzymatically active or prevents their premature inactivation.
